---
_id: '61350'
author:
- first_name: Orlando
  full_name: Massopo, Orlando
  id: '98419'
  last_name: Massopo
- first_name: Hans-Joachim
  full_name: Schmid, Hans-Joachim
  id: '464'
  last_name: Schmid
  orcid: 000-0001-8590-1921
- first_name: Manuel
  full_name: Reddemann, Manuel
  last_name: Reddemann
- first_name: Reinhold
  full_name: Kneer, Reinhold
  last_name: Kneer
- first_name: Malte
  full_name: Bieber, Malte
  last_name: Bieber
citation:
  ama: 'Massopo O, Schmid H-J, Reddemann M, Kneer R, Bieber M. Influence of Dispersion
    Gas and Resulting Reaction Zone on the Particle Formation in Spray Flame Synthesis
    (Presentation). In: 6th International Symposium Gas-Phase Synthesis of Functional
    Nanomaterials: Fundamental Understanding, Modeling and Simulation, Scale-up and
    Application.'
  apa: Massopo, O., Schmid, H.-J., Reddemann, M., Kneer, R., & Bieber, M. (n.d.).
    <i>Influence of Dispersion Gas and Resulting Reaction Zone on the Particle Formation
    in Spray Flame Synthesis (Presentation)</i>.
  bibtex: '@inproceedings{Massopo_Schmid_Reddemann_Kneer_Bieber, place={Duisburg},
    title={Influence of Dispersion Gas and Resulting Reaction Zone on the Particle
    Formation in Spray Flame Synthesis (Presentation)}, publisher={6th International
    Symposium Gas-Phase Synthesis of Functional Nanomaterials: Fundamental Understanding,
    Modeling and Simulation, Scale-up and Application}, author={Massopo, Orlando and
    Schmid, Hans-Joachim and Reddemann, Manuel and Kneer, Reinhold and Bieber, Malte}
    }'
  chicago: 'Massopo, Orlando, Hans-Joachim Schmid, Manuel Reddemann, Reinhold Kneer,
    and Malte Bieber. “Influence of Dispersion Gas and Resulting Reaction Zone on
    the Particle Formation in Spray Flame Synthesis (Presentation).” Duisburg: 6th
    International Symposium Gas-Phase Synthesis of Functional Nanomaterials: Fundamental
    Understanding, Modeling and Simulation, Scale-up and Application, n.d.'
  ieee: O. Massopo, H.-J. Schmid, M. Reddemann, R. Kneer, and M. Bieber, “Influence
    of Dispersion Gas and Resulting Reaction Zone on the Particle Formation in Spray
    Flame Synthesis (Presentation).”
  mla: 'Massopo, Orlando, et al. <i>Influence of Dispersion Gas and Resulting Reaction
    Zone on the Particle Formation in Spray Flame Synthesis (Presentation)</i>. 6th
    International Symposium Gas-Phase Synthesis of Functional Nanomaterials: Fundamental
    Understanding, Modeling and Simulation, Scale-up and Application.'
  short: 'O. Massopo, H.-J. Schmid, M. Reddemann, R. Kneer, M. Bieber, in: 6th International
    Symposium Gas-Phase Synthesis of Functional Nanomaterials: Fundamental Understanding,
    Modeling and Simulation, Scale-up and Application, Duisburg, n.d.'
date_created: 2025-09-18T10:40:58Z
date_updated: 2025-09-18T11:17:13Z
department:
- _id: '150'
language:
- iso: eng
place: Duisburg
publication_status: unpublished
publisher: '6th International Symposium Gas-Phase Synthesis of Functional Nanomaterials:
  Fundamental Understanding, Modeling and Simulation, Scale-up and Application'
status: public
title: Influence of Dispersion Gas and Resulting Reaction Zone on the Particle Formation
  in Spray Flame Synthesis (Presentation)
type: conference_abstract
user_id: '98419'
year: '2024'
...
---
_id: '61345'
author:
- first_name: Timm Florian
  full_name: Zink, Timm Florian
  last_name: Zink
- first_name: Orlando
  full_name: Massopo, Orlando
  id: '98419'
  last_name: Massopo
- first_name: Steffen
  full_name: Jesinghausen, Steffen
  id: '3959'
  last_name: Jesinghausen
  orcid: https://orcid.org/0000-0003-2611-5298
- first_name: Hans-Joachim
  full_name: Schmid, Hans-Joachim
  id: '464'
  last_name: Schmid
  orcid: 000-0001-8590-1921
citation:
  ama: Zink TF, Massopo O, Jesinghausen S, Schmid H-J. <i>Untersuchung des Lösungsmitteleinflusses
    auf die Synthese von Manganoxid-Nanopartikeln in der Flammenspraypyrolyse</i>.;
    2024.
  apa: Zink, T. F., Massopo, O., Jesinghausen, S., &#38; Schmid, H.-J. (2024). <i>Untersuchung
    des Lösungsmitteleinflusses auf die Synthese von Manganoxid-Nanopartikeln in der
    Flammenspraypyrolyse</i>.
  bibtex: '@book{Zink_Massopo_Jesinghausen_Schmid_2024, title={Untersuchung des Lösungsmitteleinflusses
    auf die Synthese von Manganoxid-Nanopartikeln in der Flammenspraypyrolyse}, author={Zink,
    Timm Florian and Massopo, Orlando and Jesinghausen, Steffen and Schmid, Hans-Joachim},
    year={2024} }'
  chicago: Zink, Timm Florian, Orlando Massopo, Steffen Jesinghausen, and Hans-Joachim
    Schmid. <i>Untersuchung des Lösungsmitteleinflusses auf die Synthese von Manganoxid-Nanopartikeln
    in der Flammenspraypyrolyse</i>, 2024.
  ieee: T. F. Zink, O. Massopo, S. Jesinghausen, and H.-J. Schmid, <i>Untersuchung
    des Lösungsmitteleinflusses auf die Synthese von Manganoxid-Nanopartikeln in der
    Flammenspraypyrolyse</i>. 2024.
  mla: Zink, Timm Florian, et al. <i>Untersuchung des Lösungsmitteleinflusses auf
    die Synthese von Manganoxid-Nanopartikeln in der Flammenspraypyrolyse</i>. 2024.
  short: T.F. Zink, O. Massopo, S. Jesinghausen, H.-J. Schmid, Untersuchung des Lösungsmitteleinflusses
    auf die Synthese von Manganoxid-Nanopartikeln in der Flammenspraypyrolyse, 2024.
date_created: 2025-09-18T10:25:50Z
date_updated: 2025-09-18T11:17:34Z
department:
- _id: '150'
language:
- iso: ger
status: public
supervisor:
- first_name: Orlando
  full_name: Massopo, Orlando
  id: '98419'
  last_name: Massopo
title: Untersuchung des Lösungsmitteleinflusses auf die Synthese von Manganoxid-Nanopartikeln
  in der Flammenspraypyrolyse
type: bachelorsthesis
user_id: '98419'
year: '2024'
...
---
_id: '61413'
abstract:
- lang: eng
  text: Climate change has led to a large number of countries deciding to reduce carbon
    dioxide (CO<jats:sub>2</jats:sub>) emissions significantly. As the mobility sector
    is a major contributor to CO<jats:sub>2</jats:sub>, various strategies are being
    pursued to achieve the climate targets set. An increasingly applied lightweight
    design method is the use of multi-material constructions. To join these structures,
    mechanical joining technologies such as self-pierce riveting are being used. As
    a result of the currently rigid tool systems, which cannot react to changing boundary
    conditions, a large number of rivet–die combinations is required to join the rising
    number of materials as well as material thickness combinations. Thus, new, versatile
    joining technologies are needed that can react to the described changes. The versatile
    self-piercing riveting (V-SPR) process is one possible approach. In this process,
    different material thicknesses can be joined by using a multi-range capable rivet
    which is set by a joining system with extended actuator technology. In this study,
    the V-SPR joining process is analysed numerically according to the influence of
    the geometrical rivet parameters on the joints characteristics as well as the
    resulting material flow. The investigations showed that the shank geometry has
    a decisive influence on the expansion of the rivet. Furthermore, the rivet length
    could be proven to be an influencing factor. By changing the head radii and the
    protrusion height, the forming behaviour of the rivet head onto the punch-sided
    joining part could be improved and thus the formation of air pockets was prevented.
    Based on the numerical investigations, a novel rivet geometry was developed and
    produced by machining. Subsequently, experimentally produced joints were analysed
    according to their joint formation and load-bearing capacity.
article_number: '09544089241263141'
author:
- first_name: Fabian
  full_name: Kappe, Fabian
  id: '66459'
  last_name: Kappe
- first_name: Mathias
  full_name: Bobbert, Mathias
  id: '7850'
  last_name: Bobbert
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Kappe F, Bobbert M, Meschut G. Investigation of the influence of the rivet
    geometry on joint formation for a versatile self-piercing riveting process. <i>Proceedings
    of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
    Engineering</i>. Published online 2024. doi:<a href="https://doi.org/10.1177/09544089241263141">10.1177/09544089241263141</a>'
  apa: 'Kappe, F., Bobbert, M., &#38; Meschut, G. (2024). Investigation of the influence
    of the rivet geometry on joint formation for a versatile self-piercing riveting
    process. <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal
    of Process Mechanical Engineering</i>, Article 09544089241263141. <a href="https://doi.org/10.1177/09544089241263141">https://doi.org/10.1177/09544089241263141</a>'
  bibtex: '@article{Kappe_Bobbert_Meschut_2024, title={Investigation of the influence
    of the rivet geometry on joint formation for a versatile self-piercing riveting
    process}, DOI={<a href="https://doi.org/10.1177/09544089241263141">10.1177/09544089241263141</a>},
    number={09544089241263141}, journal={Proceedings of the Institution of Mechanical
    Engineers, Part E: Journal of Process Mechanical Engineering}, publisher={SAGE
    Publications}, author={Kappe, Fabian and Bobbert, Mathias and Meschut, Gerson},
    year={2024} }'
  chicago: 'Kappe, Fabian, Mathias Bobbert, and Gerson Meschut. “Investigation of
    the Influence of the Rivet Geometry on Joint Formation for a Versatile Self-Piercing
    Riveting Process.” <i>Proceedings of the Institution of Mechanical Engineers,
    Part E: Journal of Process Mechanical Engineering</i>, 2024. <a href="https://doi.org/10.1177/09544089241263141">https://doi.org/10.1177/09544089241263141</a>.'
  ieee: 'F. Kappe, M. Bobbert, and G. Meschut, “Investigation of the influence of
    the rivet geometry on joint formation for a versatile self-piercing riveting process,”
    <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal of
    Process Mechanical Engineering</i>, Art. no. 09544089241263141, 2024, doi: <a
    href="https://doi.org/10.1177/09544089241263141">10.1177/09544089241263141</a>.'
  mla: 'Kappe, Fabian, et al. “Investigation of the Influence of the Rivet Geometry
    on Joint Formation for a Versatile Self-Piercing Riveting Process.” <i>Proceedings
    of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
    Engineering</i>, 09544089241263141, SAGE Publications, 2024, doi:<a href="https://doi.org/10.1177/09544089241263141">10.1177/09544089241263141</a>.'
  short: 'F. Kappe, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical
    Engineers, Part E: Journal of Process Mechanical Engineering (2024).'
date_created: 2025-09-23T13:06:35Z
date_updated: 2025-09-23T13:15:51Z
department:
- _id: '43'
- _id: '157'
doi: 10.1177/09544089241263141
language:
- iso: eng
project:
- _id: '130'
  name: 'TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
    Prozessketten'
- _id: '133'
  name: TRR 285 - Project Area C
- _id: '146'
  name: TRR 285 - Subproject C02
publication: 'Proceedings of the Institution of Mechanical Engineers, Part E: Journal
  of Process Mechanical Engineering'
publication_identifier:
  issn:
  - 0954-4089
  - 2041-3009
publication_status: published
publisher: SAGE Publications
quality_controlled: '1'
status: public
title: Investigation of the influence of the rivet geometry on joint formation for
  a versatile self-piercing riveting process
type: journal_article
user_id: '44935'
year: '2024'
...
---
_id: '57898'
author:
- first_name: Simon
  full_name: Kruse, Simon
  id: '65653'
  last_name: Kruse
- first_name: Andreas
  full_name: Elsner, Andreas
  id: '16124'
  last_name: Elsner
- first_name: Andreas
  full_name: Paul, Andreas
  id: '7828'
  last_name: Paul
- first_name: Tina
  full_name: Kasper, Tina
  id: '94562'
  last_name: Kasper
  orcid: '0000-0003-3993-5316 '
citation:
  ama: 'Kruse S, Elsner A, Paul A, Kasper T. Anstieg der Energieaufnahme von Haushaltskältegeräten.
    In: ; 2024.'
  apa: Kruse, S., Elsner, A., Paul, A., &#38; Kasper, T. (2024). <i>Anstieg der Energieaufnahme
    von Haushaltskältegeräten</i>. DKV-Tagung2024, Dresden.
  bibtex: '@inproceedings{Kruse_Elsner_Paul_Kasper_2024, title={Anstieg der Energieaufnahme
    von Haushaltskältegeräten}, author={Kruse, Simon and Elsner, Andreas and Paul,
    Andreas and Kasper, Tina}, year={2024} }'
  chicago: Kruse, Simon, Andreas Elsner, Andreas Paul, and Tina Kasper. “Anstieg der
    Energieaufnahme von Haushaltskältegeräten,” 2024.
  ieee: S. Kruse, A. Elsner, A. Paul, and T. Kasper, “Anstieg der Energieaufnahme
    von Haushaltskältegeräten,” presented at the DKV-Tagung2024, Dresden, 2024.
  mla: Kruse, Simon, et al. <i>Anstieg der Energieaufnahme von Haushaltskältegeräten</i>.
    2024.
  short: 'S. Kruse, A. Elsner, A. Paul, T. Kasper, in: 2024.'
conference:
  end_date: 2024-11-222
  location: Dresden
  name: DKV-Tagung2024
  start_date: 2024-11-20
date_created: 2025-01-02T11:42:01Z
date_updated: 2025-09-24T13:42:03Z
department:
- _id: '728'
- _id: '155'
keyword:
- Haushaltskältegeräte
- Energieaufnahme
- Alterung
language:
- iso: ger
status: public
title: Anstieg der Energieaufnahme von Haushaltskältegeräten
type: conference_abstract
user_id: '7828'
year: '2024'
...
---
_id: '58342'
author:
- first_name: Christoph
  full_name: Bode, Christoph
  last_name: Bode
- first_name: Stefan
  full_name: Goetz, Stefan
  last_name: Goetz
- first_name: Sandro
  full_name: Wartzack, Sandro
  last_name: Wartzack
citation:
  ama: Bode C, Goetz S, Wartzack S. On the transferability of nominal surrogate models
    to uncertainty consideration of clinch joint characteristics. <i>Procedia CIRP</i>.
    2024;129:151-156. doi:<a href="https://doi.org/10.1016/j.procir.2024.10.027">10.1016/j.procir.2024.10.027</a>
  apa: Bode, C., Goetz, S., &#38; Wartzack, S. (2024). On the transferability of nominal
    surrogate models to uncertainty consideration of clinch joint characteristics.
    <i>Procedia CIRP</i>, <i>129</i>, 151–156. <a href="https://doi.org/10.1016/j.procir.2024.10.027">https://doi.org/10.1016/j.procir.2024.10.027</a>
  bibtex: '@article{Bode_Goetz_Wartzack_2024, title={On the transferability of nominal
    surrogate models to uncertainty consideration of clinch joint characteristics},
    volume={129}, DOI={<a href="https://doi.org/10.1016/j.procir.2024.10.027">10.1016/j.procir.2024.10.027</a>},
    journal={Procedia CIRP}, publisher={Elsevier BV}, author={Bode, Christoph and
    Goetz, Stefan and Wartzack, Sandro}, year={2024}, pages={151–156} }'
  chicago: 'Bode, Christoph, Stefan Goetz, and Sandro Wartzack. “On the Transferability
    of Nominal Surrogate Models to Uncertainty Consideration of Clinch Joint Characteristics.”
    <i>Procedia CIRP</i> 129 (2024): 151–56. <a href="https://doi.org/10.1016/j.procir.2024.10.027">https://doi.org/10.1016/j.procir.2024.10.027</a>.'
  ieee: 'C. Bode, S. Goetz, and S. Wartzack, “On the transferability of nominal surrogate
    models to uncertainty consideration of clinch joint characteristics,” <i>Procedia
    CIRP</i>, vol. 129, pp. 151–156, 2024, doi: <a href="https://doi.org/10.1016/j.procir.2024.10.027">10.1016/j.procir.2024.10.027</a>.'
  mla: Bode, Christoph, et al. “On the Transferability of Nominal Surrogate Models
    to Uncertainty Consideration of Clinch Joint Characteristics.” <i>Procedia CIRP</i>,
    vol. 129, Elsevier BV, 2024, pp. 151–56, doi:<a href="https://doi.org/10.1016/j.procir.2024.10.027">10.1016/j.procir.2024.10.027</a>.
  short: C. Bode, S. Goetz, S. Wartzack, Procedia CIRP 129 (2024) 151–156.
date_created: 2025-01-23T13:53:59Z
date_updated: 2025-10-01T14:32:26Z
department:
- _id: '157'
doi: 10.1016/j.procir.2024.10.027
intvolume: '       129'
language:
- iso: eng
page: 151-156
project:
- _id: '132'
  name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '130'
  name: 'TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
    Prozessketten'
- _id: '144'
  name: TRR 285 - Subproject B05
publication: Procedia CIRP
publication_identifier:
  issn:
  - 2212-8271
publication_status: published
publisher: Elsevier BV
status: public
title: On the transferability of nominal surrogate models to uncertainty consideration
  of clinch joint characteristics
type: journal_article
user_id: '107109'
volume: 129
year: '2024'
...
---
_id: '62025'
abstract:
- lang: eng
  text: <jats:title>ABSTRACT</jats:title><jats:p>This paper deals with micromagnetic
    measurements for online detection of strain‐induced α′‐martensite during plastic
    deformation of metastable austenitic steel AISI 304L. The operating principles
    of the sensors are magnetic Barkhausen noise (MBN) and eddy currents (EC), which
    are suitable for detection of microstructure evolution due to formation of ferromagnetic
    phases. The focus of this study was put on the qualification of different micromagnetic
    techniques and different measurement systems under conditions similar to the real
    ones during production, which is crucial for implementation of a property‐controlled
    flow forming process. The investigation was carried out on tubular specimens produced
    by flow forming, which have different content of α′‐martensite. To characterize
    the sensitivity of the sensors, different contact conditions between sensors and
    workpieces were reproduced. MBN sensors are suitable for detecting amount of α′‐martensite,
    but the measurements are affected by the surface roughness. This entails that
    the calibration models for MBN sensors must take account of these effects. EC
    sensors show a closer match with the amount of α′‐martensite without having major
    affectation by other effects.</jats:p>
article_number: e13070
author:
- first_name: Julian
  full_name: Rozo Vasquez, Julian
  last_name: Rozo Vasquez
- first_name: Hanigah
  full_name: Kanagarajah, Hanigah
  last_name: Kanagarajah
- first_name: Bahman
  full_name: Arian, Bahman
  id: '36287'
  last_name: Arian
- first_name: Lukas
  full_name: Kersting, Lukas
  last_name: Kersting
- first_name: Werner
  full_name: Homberg, Werner
  id: '233'
  last_name: Homberg
- first_name: Ansgar
  full_name: Trächtler, Ansgar
  id: '552'
  last_name: Trächtler
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
citation:
  ama: Rozo Vasquez J, Kanagarajah H, Arian B, et al. Barkhausen Noise‐ and Eddy Current‐Based
    Measurements for Online Detection of Deformation‐Induced Martensite During Flow
    Forming of Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/scp&#62;. <i>Engineering
    Reports</i>. 2024;7(1). doi:<a href="https://doi.org/10.1002/eng2.13070">10.1002/eng2.13070</a>
  apa: Rozo Vasquez, J., Kanagarajah, H., Arian, B., Kersting, L., Homberg, W., Trächtler,
    A., &#38; Walther, F. (2024). Barkhausen Noise‐ and Eddy Current‐Based Measurements
    for Online Detection of Deformation‐Induced Martensite During Flow Forming of
    Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/scp&#62;. <i>Engineering
    Reports</i>, <i>7</i>(1), Article e13070. <a href="https://doi.org/10.1002/eng2.13070">https://doi.org/10.1002/eng2.13070</a>
  bibtex: '@article{Rozo Vasquez_Kanagarajah_Arian_Kersting_Homberg_Trächtler_Walther_2024,
    title={Barkhausen Noise‐ and Eddy Current‐Based Measurements for Online Detection
    of Deformation‐Induced Martensite During Flow Forming of Metastable Austenitic
    Steel &#60;scp&#62;AISI 304L&#60;/scp&#62;}, volume={7}, DOI={<a href="https://doi.org/10.1002/eng2.13070">10.1002/eng2.13070</a>},
    number={1e13070}, journal={Engineering Reports}, publisher={Wiley}, author={Rozo
    Vasquez, Julian and Kanagarajah, Hanigah and Arian, Bahman and Kersting, Lukas
    and Homberg, Werner and Trächtler, Ansgar and Walther, Frank}, year={2024} }'
  chicago: Rozo Vasquez, Julian, Hanigah Kanagarajah, Bahman Arian, Lukas Kersting,
    Werner Homberg, Ansgar Trächtler, and Frank Walther. “Barkhausen Noise‐ and Eddy
    Current‐Based Measurements for Online Detection of Deformation‐Induced Martensite
    During Flow Forming of Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/Scp&#62;.”
    <i>Engineering Reports</i> 7, no. 1 (2024). <a href="https://doi.org/10.1002/eng2.13070">https://doi.org/10.1002/eng2.13070</a>.
  ieee: 'J. Rozo Vasquez <i>et al.</i>, “Barkhausen Noise‐ and Eddy Current‐Based
    Measurements for Online Detection of Deformation‐Induced Martensite During Flow
    Forming of Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/scp&#62;,”
    <i>Engineering Reports</i>, vol. 7, no. 1, Art. no. e13070, 2024, doi: <a href="https://doi.org/10.1002/eng2.13070">10.1002/eng2.13070</a>.'
  mla: Rozo Vasquez, Julian, et al. “Barkhausen Noise‐ and Eddy Current‐Based Measurements
    for Online Detection of Deformation‐Induced Martensite During Flow Forming of
    Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/Scp&#62;.” <i>Engineering
    Reports</i>, vol. 7, no. 1, e13070, Wiley, 2024, doi:<a href="https://doi.org/10.1002/eng2.13070">10.1002/eng2.13070</a>.
  short: J. Rozo Vasquez, H. Kanagarajah, B. Arian, L. Kersting, W. Homberg, A. Trächtler,
    F. Walther, Engineering Reports 7 (2024).
date_created: 2025-10-30T12:25:57Z
date_updated: 2025-10-30T12:54:40Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
doi: 10.1002/eng2.13070
intvolume: '         7'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1002/eng2.13070
oa: '1'
publication: Engineering Reports
publication_identifier:
  issn:
  - 2577-8196
  - 2577-8196
publication_status: published
publisher: Wiley
status: public
title: Barkhausen Noise‐ and Eddy Current‐Based Measurements for Online Detection
  of Deformation‐Induced Martensite During Flow Forming of Metastable Austenitic Steel
  <scp>AISI 304L</scp>
type: journal_article
user_id: '82875'
volume: 7
year: '2024'
...
---
_id: '62053'
abstract:
- lang: eng
  text: <jats:title>ABSTRACT</jats:title><jats:p>This paper deals with micromagnetic
    measurements for online detection of strain‐induced α′‐martensite during plastic
    deformation of metastable austenitic steel AISI 304L. The operating principles
    of the sensors are magnetic Barkhausen noise (MBN) and eddy currents (EC), which
    are suitable for detection of microstructure evolution due to formation of ferromagnetic
    phases. The focus of this study was put on the qualification of different micromagnetic
    techniques and different measurement systems under conditions similar to the real
    ones during production, which is crucial for implementation of a property‐controlled
    flow forming process. The investigation was carried out on tubular specimens produced
    by flow forming, which have different content of α′‐martensite. To characterize
    the sensitivity of the sensors, different contact conditions between sensors and
    workpieces were reproduced. MBN sensors are suitable for detecting amount of α′‐martensite,
    but the measurements are affected by the surface roughness. This entails that
    the calibration models for MBN sensors must take account of these effects. EC
    sensors show a closer match with the amount of α′‐martensite without having major
    affectation by other effects.</jats:p>
article_number: e13070
author:
- first_name: Julian
  full_name: Rozo Vasquez, Julian
  last_name: Rozo Vasquez
- first_name: Hanigah
  full_name: Kanagarajah, Hanigah
  last_name: Kanagarajah
- first_name: Bahman
  full_name: Arian, Bahman
  id: '36287'
  last_name: Arian
- first_name: Lukas
  full_name: Kersting, Lukas
  last_name: Kersting
- first_name: Werner
  full_name: Homberg, Werner
  id: '233'
  last_name: Homberg
- first_name: Ansgar
  full_name: Trächtler, Ansgar
  id: '552'
  last_name: Trächtler
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
citation:
  ama: Rozo Vasquez J, Kanagarajah H, Arian B, et al. Barkhausen Noise‐ and Eddy Current‐Based
    Measurements for Online Detection of Deformation‐Induced Martensite During Flow
    Forming of Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/scp&#62;. <i>Engineering
    Reports</i>. 2024;7(1). doi:<a href="https://doi.org/10.1002/eng2.13070">10.1002/eng2.13070</a>
  apa: Rozo Vasquez, J., Kanagarajah, H., Arian, B., Kersting, L., Homberg, W., Trächtler,
    A., &#38; Walther, F. (2024). Barkhausen Noise‐ and Eddy Current‐Based Measurements
    for Online Detection of Deformation‐Induced Martensite During Flow Forming of
    Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/scp&#62;. <i>Engineering
    Reports</i>, <i>7</i>(1), Article e13070. <a href="https://doi.org/10.1002/eng2.13070">https://doi.org/10.1002/eng2.13070</a>
  bibtex: '@article{Rozo Vasquez_Kanagarajah_Arian_Kersting_Homberg_Trächtler_Walther_2024,
    title={Barkhausen Noise‐ and Eddy Current‐Based Measurements for Online Detection
    of Deformation‐Induced Martensite During Flow Forming of Metastable Austenitic
    Steel &#60;scp&#62;AISI 304L&#60;/scp&#62;}, volume={7}, DOI={<a href="https://doi.org/10.1002/eng2.13070">10.1002/eng2.13070</a>},
    number={1e13070}, journal={Engineering Reports}, publisher={Wiley}, author={Rozo
    Vasquez, Julian and Kanagarajah, Hanigah and Arian, Bahman and Kersting, Lukas
    and Homberg, Werner and Trächtler, Ansgar and Walther, Frank}, year={2024} }'
  chicago: Rozo Vasquez, Julian, Hanigah Kanagarajah, Bahman Arian, Lukas Kersting,
    Werner Homberg, Ansgar Trächtler, and Frank Walther. “Barkhausen Noise‐ and Eddy
    Current‐Based Measurements for Online Detection of Deformation‐Induced Martensite
    During Flow Forming of Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/Scp&#62;.”
    <i>Engineering Reports</i> 7, no. 1 (2024). <a href="https://doi.org/10.1002/eng2.13070">https://doi.org/10.1002/eng2.13070</a>.
  ieee: 'J. Rozo Vasquez <i>et al.</i>, “Barkhausen Noise‐ and Eddy Current‐Based
    Measurements for Online Detection of Deformation‐Induced Martensite During Flow
    Forming of Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/scp&#62;,”
    <i>Engineering Reports</i>, vol. 7, no. 1, Art. no. e13070, 2024, doi: <a href="https://doi.org/10.1002/eng2.13070">10.1002/eng2.13070</a>.'
  mla: Rozo Vasquez, Julian, et al. “Barkhausen Noise‐ and Eddy Current‐Based Measurements
    for Online Detection of Deformation‐Induced Martensite During Flow Forming of
    Metastable Austenitic Steel &#60;scp&#62;AISI 304L&#60;/Scp&#62;.” <i>Engineering
    Reports</i>, vol. 7, no. 1, e13070, Wiley, 2024, doi:<a href="https://doi.org/10.1002/eng2.13070">10.1002/eng2.13070</a>.
  short: J. Rozo Vasquez, H. Kanagarajah, B. Arian, L. Kersting, W. Homberg, A. Trächtler,
    F. Walther, Engineering Reports 7 (2024).
date_created: 2025-11-03T10:28:12Z
date_updated: 2025-11-03T10:29:18Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
doi: 10.1002/eng2.13070
intvolume: '         7'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1002/eng2.13070
oa: '1'
publication: Engineering Reports
publication_identifier:
  issn:
  - 2577-8196
  - 2577-8196
publication_status: published
publisher: Wiley
status: public
title: Barkhausen Noise‐ and Eddy Current‐Based Measurements for Online Detection
  of Deformation‐Induced Martensite During Flow Forming of Metastable Austenitic Steel
  <scp>AISI 304L</scp>
type: journal_article
user_id: '82875'
volume: 7
year: '2024'
...
---
_id: '56604'
abstract:
- lang: eng
  text: This manuscript makes the claim of having computed the 9th Dedekind number,
    D(9). This was done by accelerating the core operation of the process with an
    efficient FPGA design that outperforms an optimized 64-core CPU reference by 95x.
    The FPGA execution was parallelized on the Noctua 2 supercomputer at Paderborn
    University. The resulting value for D(9) is 286386577668298411128469151667598498812366.
    This value can be verified in two steps. We have made the data file containing
    the 490 M results available, each of which can be verified separately on CPU,
    and the whole file sums to our proposed value. The paper explains the mathematical
    approach in the first part, before putting the focus on a deep dive into the FPGA
    accelerator implementation followed by a performance analysis. The FPGA implementation
    was done in Register-Transfer Level using a dual-clock architecture and shows
    how we achieved an impressive FMax of 450 MHz on the targeted Stratix 10 GX 2,800
    FPGAs. The total compute time used was 47,000 FPGA hours.
author:
- first_name: Lennart
  full_name: Van Hirtum, Lennart
  id: '100210'
  last_name: Van Hirtum
- first_name: Patrick
  full_name: De Causmaecker, Patrick
  last_name: De Causmaecker
- first_name: Jens
  full_name: Goemaere, Jens
  last_name: Goemaere
- first_name: Tobias
  full_name: Kenter, Tobias
  id: '3145'
  last_name: Kenter
- first_name: Heinrich
  full_name: Riebler, Heinrich
  id: '8961'
  last_name: Riebler
- first_name: Michael
  full_name: Lass, Michael
  id: '24135'
  last_name: Lass
  orcid: 0000-0002-5708-7632
- first_name: Christian
  full_name: Plessl, Christian
  id: '16153'
  last_name: Plessl
  orcid: 0000-0001-5728-9982
citation:
  ama: Van Hirtum L, De Causmaecker P, Goemaere J, et al. A Computation of the Ninth
    Dedekind Number Using FPGA Supercomputing. <i>ACM Transactions on Reconfigurable
    Technology and Systems</i>. 2024;17(3):1-28. doi:<a href="https://doi.org/10.1145/3674147">10.1145/3674147</a>
  apa: Van Hirtum, L., De Causmaecker, P., Goemaere, J., Kenter, T., Riebler, H.,
    Lass, M., &#38; Plessl, C. (2024). A Computation of the Ninth Dedekind Number
    Using FPGA Supercomputing. <i>ACM Transactions on Reconfigurable Technology and
    Systems</i>, <i>17</i>(3), 1–28. <a href="https://doi.org/10.1145/3674147">https://doi.org/10.1145/3674147</a>
  bibtex: '@article{Van Hirtum_De Causmaecker_Goemaere_Kenter_Riebler_Lass_Plessl_2024,
    title={A Computation of the Ninth Dedekind Number Using FPGA Supercomputing},
    volume={17}, DOI={<a href="https://doi.org/10.1145/3674147">10.1145/3674147</a>},
    number={3}, journal={ACM Transactions on Reconfigurable Technology and Systems},
    publisher={Association for Computing Machinery (ACM)}, author={Van Hirtum, Lennart
    and De Causmaecker, Patrick and Goemaere, Jens and Kenter, Tobias and Riebler,
    Heinrich and Lass, Michael and Plessl, Christian}, year={2024}, pages={1–28} }'
  chicago: 'Van Hirtum, Lennart, Patrick De Causmaecker, Jens Goemaere, Tobias Kenter,
    Heinrich Riebler, Michael Lass, and Christian Plessl. “A Computation of the Ninth
    Dedekind Number Using FPGA Supercomputing.” <i>ACM Transactions on Reconfigurable
    Technology and Systems</i> 17, no. 3 (2024): 1–28. <a href="https://doi.org/10.1145/3674147">https://doi.org/10.1145/3674147</a>.'
  ieee: 'L. Van Hirtum <i>et al.</i>, “A Computation of the Ninth Dedekind Number
    Using FPGA Supercomputing,” <i>ACM Transactions on Reconfigurable Technology and
    Systems</i>, vol. 17, no. 3, pp. 1–28, 2024, doi: <a href="https://doi.org/10.1145/3674147">10.1145/3674147</a>.'
  mla: Van Hirtum, Lennart, et al. “A Computation of the Ninth Dedekind Number Using
    FPGA Supercomputing.” <i>ACM Transactions on Reconfigurable Technology and Systems</i>,
    vol. 17, no. 3, Association for Computing Machinery (ACM), 2024, pp. 1–28, doi:<a
    href="https://doi.org/10.1145/3674147">10.1145/3674147</a>.
  short: L. Van Hirtum, P. De Causmaecker, J. Goemaere, T. Kenter, H. Riebler, M.
    Lass, C. Plessl, ACM Transactions on Reconfigurable Technology and Systems 17
    (2024) 1–28.
date_created: 2024-10-14T07:38:29Z
date_updated: 2025-11-04T09:53:26Z
department:
- _id: '27'
- _id: '518'
doi: 10.1145/3674147
intvolume: '        17'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: 1-28
project:
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: ACM Transactions on Reconfigurable Technology and Systems
publication_identifier:
  issn:
  - 1936-7406
  - 1936-7414
publication_status: published
publisher: Association for Computing Machinery (ACM)
quality_controlled: '1'
status: public
title: A Computation of the Ninth Dedekind Number Using FPGA Supercomputing
type: journal_article
user_id: '3145'
volume: 17
year: '2024'
...
---
_id: '57311'
article_type: original
author:
- first_name: Keke
  full_name: Yang, Keke
  id: '65085'
  last_name: Yang
  orcid: 0000-0001-9201-9304
- first_name: Matthias
  full_name: Sowada, Matthias
  id: '44475'
  last_name: Sowada
- first_name: Viktoria
  full_name: Olfert, Viktoria
  id: '5974'
  last_name: Olfert
- first_name: Georg
  full_name: Seitz, Georg
  last_name: Seitz
- first_name: Vincent
  full_name: Schreiber, Vincent
  last_name: Schreiber
- first_name: Marcel
  full_name: Heitmann, Marcel
  id: '38072'
  last_name: Heitmann
  orcid: 0009-0002-4181-8928
- first_name: David
  full_name: Hein, David
  id: '7728'
  last_name: Hein
- first_name: Max
  full_name: Biegler, Max
  last_name: Biegler
- first_name: Sven
  full_name: Jüttner, Sven
  last_name: Jüttner
- first_name: Michael
  full_name: Rethmeier, Michael
  last_name: Rethmeier
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Yang K, Sowada M, Olfert V, et al. Influence of liquid metal embrittlement
    on the failure behavior of dissimilar spot welds with advanced high-strength steel:
    A component study. <i>Journal of Materials Research and Technology</i>. Published
    online 2024. doi:<a href="https://doi.org/10.1016/j.jmrt.2024.11.166">10.1016/j.jmrt.2024.11.166</a>'
  apa: 'Yang, K., Sowada, M., Olfert, V., Seitz, G., Schreiber, V., Heitmann, M.,
    Hein, D., Biegler, M., Jüttner, S., Rethmeier, M., &#38; Meschut, G. (2024). Influence
    of liquid metal embrittlement on the failure behavior of dissimilar spot welds
    with advanced high-strength steel: A component study. <i>Journal of Materials
    Research and Technology</i>. <a href="https://doi.org/10.1016/j.jmrt.2024.11.166">https://doi.org/10.1016/j.jmrt.2024.11.166</a>'
  bibtex: '@article{Yang_Sowada_Olfert_Seitz_Schreiber_Heitmann_Hein_Biegler_Jüttner_Rethmeier_et
    al._2024, title={Influence of liquid metal embrittlement on the failure behavior
    of dissimilar spot welds with advanced high-strength steel: A component study},
    DOI={<a href="https://doi.org/10.1016/j.jmrt.2024.11.166">10.1016/j.jmrt.2024.11.166</a>},
    journal={Journal of Materials Research and Technology}, publisher={Elsevier BV},
    author={Yang, Keke and Sowada, Matthias and Olfert, Viktoria and Seitz, Georg
    and Schreiber, Vincent and Heitmann, Marcel and Hein, David and Biegler, Max and
    Jüttner, Sven and Rethmeier, Michael and et al.}, year={2024} }'
  chicago: 'Yang, Keke, Matthias Sowada, Viktoria Olfert, Georg Seitz, Vincent Schreiber,
    Marcel Heitmann, David Hein, et al. “Influence of Liquid Metal Embrittlement on
    the Failure Behavior of Dissimilar Spot Welds with Advanced High-Strength Steel:
    A Component Study.” <i>Journal of Materials Research and Technology</i>, 2024.
    <a href="https://doi.org/10.1016/j.jmrt.2024.11.166">https://doi.org/10.1016/j.jmrt.2024.11.166</a>.'
  ieee: 'K. Yang <i>et al.</i>, “Influence of liquid metal embrittlement on the failure
    behavior of dissimilar spot welds with advanced high-strength steel: A component
    study,” <i>Journal of Materials Research and Technology</i>, 2024, doi: <a href="https://doi.org/10.1016/j.jmrt.2024.11.166">10.1016/j.jmrt.2024.11.166</a>.'
  mla: 'Yang, Keke, et al. “Influence of Liquid Metal Embrittlement on the Failure
    Behavior of Dissimilar Spot Welds with Advanced High-Strength Steel: A Component
    Study.” <i>Journal of Materials Research and Technology</i>, Elsevier BV, 2024,
    doi:<a href="https://doi.org/10.1016/j.jmrt.2024.11.166">10.1016/j.jmrt.2024.11.166</a>.'
  short: K. Yang, M. Sowada, V. Olfert, G. Seitz, V. Schreiber, M. Heitmann, D. Hein,
    M. Biegler, S. Jüttner, M. Rethmeier, G. Meschut, Journal of Materials Research
    and Technology (2024).
date_created: 2024-11-21T14:25:40Z
date_updated: 2025-11-10T14:20:05Z
ddc:
- '620'
department:
- _id: '157'
doi: 10.1016/j.jmrt.2024.11.166
file:
- access_level: closed
  content_type: application/pdf
  creator: kekeyang
  date_created: 2025-02-07T10:06:14Z
  date_updated: 2025-02-07T10:06:14Z
  file_id: '58533'
  file_name: KYA_VÖ5.pdf
  file_size: 10799297
  relation: main_file
  success: 1
file_date_updated: 2025-02-07T10:06:14Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: Journal of Materials Research and Technology
publication_identifier:
  issn:
  - 2238-7854
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: 'Influence of liquid metal embrittlement on the failure behavior of dissimilar
  spot welds with advanced high-strength steel: A component study'
type: journal_article
user_id: '65085'
year: '2024'
...
---
_id: '56670'
abstract:
- lang: eng
  text: <jats:p>Systems Engineering is becoming increasingly important in the engineering
    of complex technical systems. Its introduction is forcing companies to undertake
    major transformation initiatives. As established change management approaches
    show, the corporate culture is an important key criterion for success of transformation.
    Therefore, when introducing Systems Engineering into an organization, transformation
    initiatives must be tailored to an existing corporate culture or the corporate
    culture itself must be changed in order to enable Systems Engineering. In literature
    and in industrial practice, different approaches for assessment of corporate culture
    exist. Within this research, a systematic literature review on methods and models
    for corporate culture assessment is conducted. Core elements are collected and
    combined with the fundamentals and success factors of Systems Engineering to develop
    a model for corporate culture assessment. The developed model is applied to the
    industrial practice of an ongoing Systems Engineering transformation of a large
    car manufacturer. The results of the assessment are compared with the emerging
    project challenges. Based on this model and its supporting tool and templates,
    organizations and transformation leaders are enabled to rapidly obtain an orientation
    of hindering or supporting currently established cultural aspects with regard
    to Systems Engineering transformation and to provide a decision basis for further
    measures.</jats:p>
author:
- first_name: Iris
  full_name: Graessler, Iris
  last_name: Graessler
- first_name: Benedikt
  full_name: Grewe, Benedikt
  last_name: Grewe
citation:
  ama: 'Graessler I, Grewe B. Importance of cultural change in Systems Engineering
    Transformation: A model for cultural assessment. In: <i>AHFE International</i>.
    Vol 158. AHFE International; 2024. doi:<a href="https://doi.org/10.54941/ahfe1005551">10.54941/ahfe1005551</a>'
  apa: 'Graessler, I., &#38; Grewe, B. (2024). Importance of cultural change in Systems
    Engineering Transformation: A model for cultural assessment. <i>AHFE International</i>,
    <i>158</i>. <a href="https://doi.org/10.54941/ahfe1005551">https://doi.org/10.54941/ahfe1005551</a>'
  bibtex: '@inproceedings{Graessler_Grewe_2024, title={Importance of cultural change
    in Systems Engineering Transformation: A model for cultural assessment}, volume={158},
    DOI={<a href="https://doi.org/10.54941/ahfe1005551">10.54941/ahfe1005551</a>},
    booktitle={AHFE International}, publisher={AHFE International}, author={Graessler,
    Iris and Grewe, Benedikt}, year={2024} }'
  chicago: 'Graessler, Iris, and Benedikt Grewe. “Importance of Cultural Change in
    Systems Engineering Transformation: A Model for Cultural Assessment.” In <i>AHFE
    International</i>, Vol. 158. AHFE International, 2024. <a href="https://doi.org/10.54941/ahfe1005551">https://doi.org/10.54941/ahfe1005551</a>.'
  ieee: 'I. Graessler and B. Grewe, “Importance of cultural change in Systems Engineering
    Transformation: A model for cultural assessment,” in <i>AHFE International</i>,
    2024, vol. 158, doi: <a href="https://doi.org/10.54941/ahfe1005551">10.54941/ahfe1005551</a>.'
  mla: 'Graessler, Iris, and Benedikt Grewe. “Importance of Cultural Change in Systems
    Engineering Transformation: A Model for Cultural Assessment.” <i>AHFE International</i>,
    vol. 158, AHFE International, 2024, doi:<a href="https://doi.org/10.54941/ahfe1005551">10.54941/ahfe1005551</a>.'
  short: 'I. Graessler, B. Grewe, in: AHFE International, AHFE International, 2024.'
date_created: 2024-10-17T15:13:46Z
date_updated: 2025-11-11T06:11:50Z
department:
- _id: '152'
doi: 10.54941/ahfe1005551
intvolume: '       158'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://openaccess.cms-conferences.org/publications/book/978-1-964867-34-2/article/978-1-964867-34-2_28
oa: '1'
publication: AHFE International
publication_identifier:
  issn:
  - 2771-0718
publication_status: published
publisher: AHFE International
quality_controlled: '1'
status: public
title: 'Importance of cultural change in Systems Engineering Transformation: A model
  for cultural assessment'
type: conference
user_id: '52359'
volume: 158
year: '2024'
...
---
_id: '56346'
author:
- first_name: Iris
  full_name: Gräßler, Iris
  id: '47565'
  last_name: Gräßler
  orcid: 0000-0001-5765-971X
- first_name: Deniz
  full_name: Özcan, Deniz
  id: '58595'
  last_name: Özcan
citation:
  ama: 'Gräßler I, Özcan D. Quality Key Figures for Developing Future Scenarios. In:
    <i>AHFE International</i>. Vol 158. AHFE International; 2024. doi:<a href="https://doi.org/10.54941/ahfe1005553">10.54941/ahfe1005553</a>'
  apa: Gräßler, I., &#38; Özcan, D. (2024). Quality Key Figures for Developing Future
    Scenarios. <i>AHFE International</i>, <i>158</i>. <a href="https://doi.org/10.54941/ahfe1005553">https://doi.org/10.54941/ahfe1005553</a>
  bibtex: '@inproceedings{Gräßler_Özcan_2024, title={Quality Key Figures for Developing
    Future Scenarios}, volume={158}, DOI={<a href="https://doi.org/10.54941/ahfe1005553">10.54941/ahfe1005553</a>},
    booktitle={AHFE International}, publisher={AHFE International}, author={Gräßler,
    Iris and Özcan, Deniz}, year={2024} }'
  chicago: Gräßler, Iris, and Deniz Özcan. “Quality Key Figures for Developing Future
    Scenarios.” In <i>AHFE International</i>, Vol. 158. AHFE International, 2024.
    <a href="https://doi.org/10.54941/ahfe1005553">https://doi.org/10.54941/ahfe1005553</a>.
  ieee: 'I. Gräßler and D. Özcan, “Quality Key Figures for Developing Future Scenarios,”
    in <i>AHFE International</i>, Split, 2024, vol. 158, doi: <a href="https://doi.org/10.54941/ahfe1005553">10.54941/ahfe1005553</a>.'
  mla: Gräßler, Iris, and Deniz Özcan. “Quality Key Figures for Developing Future
    Scenarios.” <i>AHFE International</i>, vol. 158, AHFE International, 2024, doi:<a
    href="https://doi.org/10.54941/ahfe1005553">10.54941/ahfe1005553</a>.
  short: 'I. Gräßler, D. Özcan, in: AHFE International, AHFE International, 2024.'
conference:
  end_date: 2024-09-26
  location: Split
  name: '6th International Conference on Human Systems Engineering and Design (IHSED2024):
    Future Trends and Applications'
  start_date: 2024-09-24
date_created: 2024-10-07T07:33:08Z
date_updated: 2025-11-13T16:42:28Z
department:
- _id: '43'
- _id: '9'
- _id: '26'
- _id: '152'
doi: 10.54941/ahfe1005553
intvolume: '       158'
language:
- iso: eng
publication: AHFE International
publication_identifier:
  unknown:
  - 2771-0718
publication_status: published
publisher: AHFE International
quality_controlled: '1'
status: public
title: Quality Key Figures for Developing Future Scenarios
type: conference
user_id: '58595'
volume: 158
year: '2024'
...
---
_id: '62767'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n          <jats:p>In this study, we
    develop a novel multi-fidelity deep learning approach that transforms low-fidelity
    solution maps into high-fidelity ones by incorporating parametric space information
    into an autoencoder architecture. This method’s integration of parametric space
    information significantly reduces the amount of training data needed to effectively
    predict high-fidelity solutions from low-fidelity ones. In this study, we examine
    a two-dimensional steady-state heat transfer analysis within a heterogeneous materials
    microstructure. The heat conductivity coefficients for two different materials
    are condensed from a 101 <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$$\\times $$</jats:tex-math>\r\n                <mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mo>×</mml:mo>\r\n
    \               </mml:math>\r\n              </jats:alternatives>\r\n            </jats:inline-formula> 101
    grid to smaller grids. We then solve the boundary value problem on the coarsest
    grid using a pre-trained physics-informed neural operator network known as Finite
    Operator Learning (FOL). The resulting low-fidelity solution is subsequently upscaled
    back to a 101 <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$$\\times
    $$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mo>×</mml:mo>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula> 101 grid using a newly designed enhanced autoencoder.
    The novelty of the developed enhanced autoencoder lies in the concatenation of
    heat conductivity maps of different resolutions to the decoder segment in distinct
    steps. Hence the developed algorithm is named microstructure-embedded autoencoder
    (MEA). We compare the MEA outcomes with those from finite element methods, the
    standard U-Net, and an interpolation approach as an upscaling technique. Our analysis
    shows that MEA outperforms these methods in terms of computational efficiency
    and error on representative test cases. As a result, the MEA serves as a potential
    supplement to neural operator networks, effectively upscaling low-fidelity solutions
    to high-fidelity while preserving critical details often lost in traditional upscaling
    methods, such as sharp interfaces features lost in the context of interpolation
    approaches.</jats:p>"
author:
- first_name: Rasoul
  full_name: Najafi Koopas, Rasoul
  last_name: Najafi Koopas
- first_name: Shahed
  full_name: Rezaei, Shahed
  last_name: Rezaei
- first_name: Natalie
  full_name: Rauter, Natalie
  last_name: Rauter
- first_name: Richard
  full_name: Ostwald, Richard
  id: '106876'
  last_name: Ostwald
  orcid: 0000-0003-2147-8444
- first_name: Rolf
  full_name: Lammering, Rolf
  last_name: Lammering
citation:
  ama: Najafi Koopas R, Rezaei S, Rauter N, Ostwald R, Lammering R. Introducing a
    microstructure-embedded autoencoder approach for reconstructing high-resolution
    solution field data from a reduced parametric space. <i>Computational Mechanics</i>.
    2024;75(4):1377-1406. doi:<a href="https://doi.org/10.1007/s00466-024-02568-z">10.1007/s00466-024-02568-z</a>
  apa: Najafi Koopas, R., Rezaei, S., Rauter, N., Ostwald, R., &#38; Lammering, R.
    (2024). Introducing a microstructure-embedded autoencoder approach for reconstructing
    high-resolution solution field data from a reduced parametric space. <i>Computational
    Mechanics</i>, <i>75</i>(4), 1377–1406. <a href="https://doi.org/10.1007/s00466-024-02568-z">https://doi.org/10.1007/s00466-024-02568-z</a>
  bibtex: '@article{Najafi Koopas_Rezaei_Rauter_Ostwald_Lammering_2024, title={Introducing
    a microstructure-embedded autoencoder approach for reconstructing high-resolution
    solution field data from a reduced parametric space}, volume={75}, DOI={<a href="https://doi.org/10.1007/s00466-024-02568-z">10.1007/s00466-024-02568-z</a>},
    number={4}, journal={Computational Mechanics}, publisher={Springer Science and
    Business Media LLC}, author={Najafi Koopas, Rasoul and Rezaei, Shahed and Rauter,
    Natalie and Ostwald, Richard and Lammering, Rolf}, year={2024}, pages={1377–1406}
    }'
  chicago: 'Najafi Koopas, Rasoul, Shahed Rezaei, Natalie Rauter, Richard Ostwald,
    and Rolf Lammering. “Introducing a Microstructure-Embedded Autoencoder Approach
    for Reconstructing High-Resolution Solution Field Data from a Reduced Parametric
    Space.” <i>Computational Mechanics</i> 75, no. 4 (2024): 1377–1406. <a href="https://doi.org/10.1007/s00466-024-02568-z">https://doi.org/10.1007/s00466-024-02568-z</a>.'
  ieee: 'R. Najafi Koopas, S. Rezaei, N. Rauter, R. Ostwald, and R. Lammering, “Introducing
    a microstructure-embedded autoencoder approach for reconstructing high-resolution
    solution field data from a reduced parametric space,” <i>Computational Mechanics</i>,
    vol. 75, no. 4, pp. 1377–1406, 2024, doi: <a href="https://doi.org/10.1007/s00466-024-02568-z">10.1007/s00466-024-02568-z</a>.'
  mla: Najafi Koopas, Rasoul, et al. “Introducing a Microstructure-Embedded Autoencoder
    Approach for Reconstructing High-Resolution Solution Field Data from a Reduced
    Parametric Space.” <i>Computational Mechanics</i>, vol. 75, no. 4, Springer Science
    and Business Media LLC, 2024, pp. 1377–406, doi:<a href="https://doi.org/10.1007/s00466-024-02568-z">10.1007/s00466-024-02568-z</a>.
  short: R. Najafi Koopas, S. Rezaei, N. Rauter, R. Ostwald, R. Lammering, Computational
    Mechanics 75 (2024) 1377–1406.
date_created: 2025-12-03T12:37:08Z
date_updated: 2025-12-03T12:51:26Z
department:
- _id: '952'
- _id: '321'
doi: 10.1007/s00466-024-02568-z
intvolume: '        75'
issue: '4'
language:
- iso: eng
page: 1377-1406
publication: Computational Mechanics
publication_identifier:
  issn:
  - 0178-7675
  - 1432-0924
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Introducing a microstructure-embedded autoencoder approach for reconstructing
  high-resolution solution field data from a reduced parametric space
type: journal_article
user_id: '85414'
volume: 75
year: '2024'
...
---
_id: '62770'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>The open-source parameter identification
    tool ADAPT (A diversely applicable parameter identification Tool) is integrated
    with a machine learning-based approach for start value prediction in order to
    calibrate a Gurson–Tvergaard–Needleman (GTN) and a Lemaitre damage model. As representative
    example case-hardened steel 16MnCrS5 is elaborated. An artificial neural network
    (ANN) is initially trained by using load–displacement curves derived from simulations
    of a boundary value problem—instead of using data generated for homogeneous states
    of deformation at material point or one-element level—with varying material parameter
    combinations. The ANN is then employed so as to predict sets of material parameters
    that already provide close solutions to the experiment. These predicted parameter
    sets serve as starting values for a subsequent multi-objective parameter identification
    by using ADAPT. ADAPT allows for the consideration of input data from multiple
    scales, including integral data such as load–displacement curves, full-field data
    such as displacement and strain fields, and high-resolution experimental void
    data at the micro-scale. The influence of each data set on prediction quality
    is analyzed. Using various types of input data introduces additional information,
    enhancing prediction accuracy. The validation is carried out with respect to experimental
    void measurements of forward rod extruded parts. The results demonstrate, by incorporating
    void measurements in the optimization process, that it is possible to improve
    the quantitative prediction of ductile damage in the sense of void area fractions
    by factor 28 in forward rod extrusion.</jats:p>
author:
- first_name: Jan
  full_name: Gerlach, Jan
  last_name: Gerlach
- first_name: Robin
  full_name: Schulte, Robin
  last_name: Schulte
- first_name: Alexander
  full_name: Schowtjak, Alexander
  last_name: Schowtjak
- first_name: Till
  full_name: Clausmeyer, Till
  last_name: Clausmeyer
- first_name: Richard
  full_name: Ostwald, Richard
  id: '106876'
  last_name: Ostwald
  orcid: 0000-0003-2147-8444
- first_name: A. Erman
  full_name: Tekkaya, A. Erman
  last_name: Tekkaya
- first_name: Andreas
  full_name: Menzel, Andreas
  last_name: Menzel
citation:
  ama: Gerlach J, Schulte R, Schowtjak A, et al. Enhancing damage prediction in bulk
    metal forming through machine learning-assisted parameter identification. <i>Archive
    of Applied Mechanics</i>. 2024;94(8):2217-2242. doi:<a href="https://doi.org/10.1007/s00419-024-02634-1">10.1007/s00419-024-02634-1</a>
  apa: Gerlach, J., Schulte, R., Schowtjak, A., Clausmeyer, T., Ostwald, R., Tekkaya,
    A. E., &#38; Menzel, A. (2024). Enhancing damage prediction in bulk metal forming
    through machine learning-assisted parameter identification. <i>Archive of Applied
    Mechanics</i>, <i>94</i>(8), 2217–2242. <a href="https://doi.org/10.1007/s00419-024-02634-1">https://doi.org/10.1007/s00419-024-02634-1</a>
  bibtex: '@article{Gerlach_Schulte_Schowtjak_Clausmeyer_Ostwald_Tekkaya_Menzel_2024,
    title={Enhancing damage prediction in bulk metal forming through machine learning-assisted
    parameter identification}, volume={94}, DOI={<a href="https://doi.org/10.1007/s00419-024-02634-1">10.1007/s00419-024-02634-1</a>},
    number={8}, journal={Archive of Applied Mechanics}, publisher={Springer Science
    and Business Media LLC}, author={Gerlach, Jan and Schulte, Robin and Schowtjak,
    Alexander and Clausmeyer, Till and Ostwald, Richard and Tekkaya, A. Erman and
    Menzel, Andreas}, year={2024}, pages={2217–2242} }'
  chicago: 'Gerlach, Jan, Robin Schulte, Alexander Schowtjak, Till Clausmeyer, Richard
    Ostwald, A. Erman Tekkaya, and Andreas Menzel. “Enhancing Damage Prediction in
    Bulk Metal Forming through Machine Learning-Assisted Parameter Identification.”
    <i>Archive of Applied Mechanics</i> 94, no. 8 (2024): 2217–42. <a href="https://doi.org/10.1007/s00419-024-02634-1">https://doi.org/10.1007/s00419-024-02634-1</a>.'
  ieee: 'J. Gerlach <i>et al.</i>, “Enhancing damage prediction in bulk metal forming
    through machine learning-assisted parameter identification,” <i>Archive of Applied
    Mechanics</i>, vol. 94, no. 8, pp. 2217–2242, 2024, doi: <a href="https://doi.org/10.1007/s00419-024-02634-1">10.1007/s00419-024-02634-1</a>.'
  mla: Gerlach, Jan, et al. “Enhancing Damage Prediction in Bulk Metal Forming through
    Machine Learning-Assisted Parameter Identification.” <i>Archive of Applied Mechanics</i>,
    vol. 94, no. 8, Springer Science and Business Media LLC, 2024, pp. 2217–42, doi:<a
    href="https://doi.org/10.1007/s00419-024-02634-1">10.1007/s00419-024-02634-1</a>.
  short: J. Gerlach, R. Schulte, A. Schowtjak, T. Clausmeyer, R. Ostwald, A.E. Tekkaya,
    A. Menzel, Archive of Applied Mechanics 94 (2024) 2217–2242.
date_created: 2025-12-03T12:46:31Z
date_updated: 2025-12-03T12:50:41Z
department:
- _id: '952'
- _id: '321'
doi: 10.1007/s00419-024-02634-1
intvolume: '        94'
issue: '8'
language:
- iso: eng
page: 2217-2242
publication: Archive of Applied Mechanics
publication_identifier:
  issn:
  - 0939-1533
  - 1432-0681
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Enhancing damage prediction in bulk metal forming through machine learning-assisted
  parameter identification
type: journal_article
user_id: '85414'
volume: 94
year: '2024'
...
---
_id: '62768'
article_number: '110675'
author:
- first_name: Rasoul
  full_name: Najafi Koopas, Rasoul
  last_name: Najafi Koopas
- first_name: Shahed
  full_name: Rezaei, Shahed
  last_name: Rezaei
- first_name: Natalie
  full_name: Rauter, Natalie
  last_name: Rauter
- first_name: Richard
  full_name: Ostwald, Richard
  id: '106876'
  last_name: Ostwald
  orcid: 0000-0003-2147-8444
- first_name: Rolf
  full_name: Lammering, Rolf
  last_name: Lammering
citation:
  ama: 'Najafi Koopas R, Rezaei S, Rauter N, Ostwald R, Lammering R. A spatiotemporal
    deep learning framework for prediction of crack dynamics in heterogeneous solids:
    Efficient mapping of concrete microstructures to its fracture properties. <i>Engineering
    Fracture Mechanics</i>. 2024;314. doi:<a href="https://doi.org/10.1016/j.engfracmech.2024.110675">10.1016/j.engfracmech.2024.110675</a>'
  apa: 'Najafi Koopas, R., Rezaei, S., Rauter, N., Ostwald, R., &#38; Lammering, R.
    (2024). A spatiotemporal deep learning framework for prediction of crack dynamics
    in heterogeneous solids: Efficient mapping of concrete microstructures to its
    fracture properties. <i>Engineering Fracture Mechanics</i>, <i>314</i>, Article
    110675. <a href="https://doi.org/10.1016/j.engfracmech.2024.110675">https://doi.org/10.1016/j.engfracmech.2024.110675</a>'
  bibtex: '@article{Najafi Koopas_Rezaei_Rauter_Ostwald_Lammering_2024, title={A spatiotemporal
    deep learning framework for prediction of crack dynamics in heterogeneous solids:
    Efficient mapping of concrete microstructures to its fracture properties}, volume={314},
    DOI={<a href="https://doi.org/10.1016/j.engfracmech.2024.110675">10.1016/j.engfracmech.2024.110675</a>},
    number={110675}, journal={Engineering Fracture Mechanics}, publisher={Elsevier
    BV}, author={Najafi Koopas, Rasoul and Rezaei, Shahed and Rauter, Natalie and
    Ostwald, Richard and Lammering, Rolf}, year={2024} }'
  chicago: 'Najafi Koopas, Rasoul, Shahed Rezaei, Natalie Rauter, Richard Ostwald,
    and Rolf Lammering. “A Spatiotemporal Deep Learning Framework for Prediction of
    Crack Dynamics in Heterogeneous Solids: Efficient Mapping of Concrete Microstructures
    to Its Fracture Properties.” <i>Engineering Fracture Mechanics</i> 314 (2024).
    <a href="https://doi.org/10.1016/j.engfracmech.2024.110675">https://doi.org/10.1016/j.engfracmech.2024.110675</a>.'
  ieee: 'R. Najafi Koopas, S. Rezaei, N. Rauter, R. Ostwald, and R. Lammering, “A
    spatiotemporal deep learning framework for prediction of crack dynamics in heterogeneous
    solids: Efficient mapping of concrete microstructures to its fracture properties,”
    <i>Engineering Fracture Mechanics</i>, vol. 314, Art. no. 110675, 2024, doi: <a
    href="https://doi.org/10.1016/j.engfracmech.2024.110675">10.1016/j.engfracmech.2024.110675</a>.'
  mla: 'Najafi Koopas, Rasoul, et al. “A Spatiotemporal Deep Learning Framework for
    Prediction of Crack Dynamics in Heterogeneous Solids: Efficient Mapping of Concrete
    Microstructures to Its Fracture Properties.” <i>Engineering Fracture Mechanics</i>,
    vol. 314, 110675, Elsevier BV, 2024, doi:<a href="https://doi.org/10.1016/j.engfracmech.2024.110675">10.1016/j.engfracmech.2024.110675</a>.'
  short: R. Najafi Koopas, S. Rezaei, N. Rauter, R. Ostwald, R. Lammering, Engineering
    Fracture Mechanics 314 (2024).
date_created: 2025-12-03T12:40:42Z
date_updated: 2025-12-03T12:51:12Z
department:
- _id: '952'
- _id: '321'
doi: 10.1016/j.engfracmech.2024.110675
intvolume: '       314'
language:
- iso: eng
publication: Engineering Fracture Mechanics
publication_identifier:
  issn:
  - 0013-7944
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: 'A spatiotemporal deep learning framework for prediction of crack dynamics
  in heterogeneous solids: Efficient mapping of concrete microstructures to its fracture
  properties'
type: journal_article
user_id: '85414'
volume: 314
year: '2024'
...
---
_id: '62999'
abstract:
- lang: eng
  text: <jats:sec><jats:title content-type="abstract-subheading">Purpose</jats:title><jats:p>Academic
    research has intensively analyzed the relationship between market concentration
    or market power and banking stability but provides ambiguous results, which are
    summarized under the concentration-stability/fragility view. We provide empirical
    evidence that the mixed results are due to the difficulty of identifying reliable
    variables to measure concentration and market power.</jats:p></jats:sec><jats:sec><jats:title
    content-type="abstract-subheading">Design/methodology/approach</jats:title><jats:p>Using
    data from 3,943 banks operating in the European Union (EU)-15 between 2013 and
    2020, we employ linear regression models on panel data. Banking market concentration
    is measured by the Herfindahl–Hirschman Index (HHI), and market power is estimated
    by the product-specific Lerner Indices for the loan and deposit market, respectively.</jats:p></jats:sec><jats:sec><jats:title
    content-type="abstract-subheading">Findings</jats:title><jats:p>Our analysis reveals
    a significantly stability-decreasing impact of market concentration (HHI) and
    a significantly stability-increasing effect of market power (Lerner Indices).
    In addition, we provide evidence for a weak (or even absent) empirical relationship
    between the (non)structural measures, challenging the validity of the structure-conduct-performance
    (SCP) paradigm. Our baseline findings remain robust, especially when controlling
    for a likely reverse causality.</jats:p></jats:sec><jats:sec><jats:title content-type="abstract-subheading">Originality/value</jats:title><jats:p>Our
    results suggest that the HHI may reflect other factors beyond market power that
    influence banking stability. Thus, banking supervisors and competition authorities
    should investigate market concentration and market power simultaneously while
    considering their joint impact on banking stability.</jats:p></jats:sec>
author:
- first_name: Sarah
  full_name: Herwald, Sarah
  id: '51867'
  last_name: Herwald
- first_name: Simone
  full_name: Voigt, Simone
  id: '50109'
  last_name: Voigt
- first_name: André
  full_name: Uhde, André
  id: '36049'
  last_name: Uhde
citation:
  ama: Herwald S, Voigt S, Uhde A. The impact of market concentration and market power
    on banking stability – evidence from Europe. <i>The Journal of Risk Finance</i>.
    2024;25(3):510-536. doi:<a href="https://doi.org/10.1108/jrf-03-2023-0075">10.1108/jrf-03-2023-0075</a>
  apa: Herwald, S., Voigt, S., &#38; Uhde, A. (2024). The impact of market concentration
    and market power on banking stability – evidence from Europe. <i>The Journal of
    Risk Finance</i>, <i>25</i>(3), 510–536. <a href="https://doi.org/10.1108/jrf-03-2023-0075">https://doi.org/10.1108/jrf-03-2023-0075</a>
  bibtex: '@article{Herwald_Voigt_Uhde_2024, title={The impact of market concentration
    and market power on banking stability – evidence from Europe}, volume={25}, DOI={<a
    href="https://doi.org/10.1108/jrf-03-2023-0075">10.1108/jrf-03-2023-0075</a>},
    number={3}, journal={The Journal of Risk Finance}, publisher={Emerald}, author={Herwald,
    Sarah and Voigt, Simone and Uhde, André}, year={2024}, pages={510–536} }'
  chicago: 'Herwald, Sarah, Simone Voigt, and André Uhde. “The Impact of Market Concentration
    and Market Power on Banking Stability – Evidence from Europe.” <i>The Journal
    of Risk Finance</i> 25, no. 3 (2024): 510–36. <a href="https://doi.org/10.1108/jrf-03-2023-0075">https://doi.org/10.1108/jrf-03-2023-0075</a>.'
  ieee: 'S. Herwald, S. Voigt, and A. Uhde, “The impact of market concentration and
    market power on banking stability – evidence from Europe,” <i>The Journal of Risk
    Finance</i>, vol. 25, no. 3, pp. 510–536, 2024, doi: <a href="https://doi.org/10.1108/jrf-03-2023-0075">10.1108/jrf-03-2023-0075</a>.'
  mla: Herwald, Sarah, et al. “The Impact of Market Concentration and Market Power
    on Banking Stability – Evidence from Europe.” <i>The Journal of Risk Finance</i>,
    vol. 25, no. 3, Emerald, 2024, pp. 510–36, doi:<a href="https://doi.org/10.1108/jrf-03-2023-0075">10.1108/jrf-03-2023-0075</a>.
  short: S. Herwald, S. Voigt, A. Uhde, The Journal of Risk Finance 25 (2024) 510–536.
date_created: 2025-12-09T14:42:44Z
date_updated: 2025-12-09T14:48:50Z
department:
- _id: '19'
doi: 10.1108/jrf-03-2023-0075
intvolume: '        25'
issue: '3'
language:
- iso: eng
page: 510-536
publication: The Journal of Risk Finance
publication_identifier:
  issn:
  - 1526-5943
publication_status: published
publisher: Emerald
status: public
title: The impact of market concentration and market power on banking stability –
  evidence from Europe
type: journal_article
user_id: '50109'
volume: 25
year: '2024'
...
---
_id: '63262'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title><jats:p>Radially symmetric global unbounded
    solutions of the chemotaxis system <jats:disp-formula><jats:alternatives><jats:tex-math>$$\\left\\{
    {\\matrix{{{u_t} = \\nabla \\cdot (D(u)\\nabla u) - \\nabla \\cdot (uS(u)\\nabla
    v),} \\hfill &amp; {} \\hfill \\cr {0 = \\Delta v - \\mu + u,} \\hfill &amp; {\\mu
    = {1 \\over {|\\Omega |}}\\int_\\Omega {u,} } \\hfill \\cr } } \\right.$$</jats:tex-math><mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mrow>\r\n
    \                   <mml:mrow>\r\n                      <mml:mo>{</mml:mo>\r\n
    \                     <mml:mrow>\r\n                        <mml:mtable>\r\n                          <mml:mtr>\r\n
    \                           <mml:mtd>\r\n                              <mml:mrow>\r\n
    \                               <mml:msub>\r\n                                  <mml:mi>u</mml:mi>\r\n
    \                                 <mml:mi>t</mml:mi>\r\n                                </mml:msub>\r\n
    \                               <mml:mo>=</mml:mo>\r\n                                <mml:mo>∇</mml:mo>\r\n
    \                               <mml:mo>⋅</mml:mo>\r\n                                <mml:mo>(</mml:mo>\r\n
    \                               <mml:mi>D</mml:mi>\r\n                                <mml:mo>(</mml:mo>\r\n
    \                               <mml:mi>u</mml:mi>\r\n                                <mml:mo>)</mml:mo>\r\n
    \                               <mml:mo>∇</mml:mo>\r\n                                <mml:mi>u</mml:mi>\r\n
    \                               <mml:mo>)</mml:mo>\r\n                                <mml:mo>−</mml:mo>\r\n
    \                               <mml:mo>∇</mml:mo>\r\n                                <mml:mo>⋅</mml:mo>\r\n
    \                               <mml:mo>(</mml:mo>\r\n                                <mml:mi>u</mml:mi>\r\n
    \                               <mml:mi>S</mml:mi>\r\n                                <mml:mo>(</mml:mo>\r\n
    \                               <mml:mi>u</mml:mi>\r\n                                <mml:mo>)</mml:mo>\r\n
    \                               <mml:mo>∇</mml:mo>\r\n                                <mml:mi>v</mml:mi>\r\n
    \                               <mml:mo>)</mml:mo>\r\n                                <mml:mo>,</mml:mo>\r\n
    \                             </mml:mrow>\r\n                            </mml:mtd>\r\n
    \                           <mml:mtd>\r\n                              <mml:mrow/>\r\n
    \                           </mml:mtd>\r\n                          </mml:mtr>\r\n
    \                         <mml:mtr>\r\n                            <mml:mtd>\r\n
    \                             <mml:mrow>\r\n                                <mml:mn>0</mml:mn>\r\n
    \                               <mml:mo>=</mml:mo>\r\n                                <mml:mi>Δ</mml:mi>\r\n
    \                               <mml:mi>v</mml:mi>\r\n                                <mml:mo>−</mml:mo>\r\n
    \                               <mml:mi>μ</mml:mi>\r\n                                <mml:mo>+</mml:mo>\r\n
    \                               <mml:mi>u</mml:mi>\r\n                                <mml:mo>,</mml:mo>\r\n
    \                             </mml:mrow>\r\n                            </mml:mtd>\r\n
    \                           <mml:mtd>\r\n                              <mml:mrow>\r\n
    \                               <mml:mi>μ</mml:mi>\r\n                                <mml:mo>=</mml:mo>\r\n
    \                               <mml:mfrac>\r\n                                  <mml:mn>1</mml:mn>\r\n
    \                                 <mml:mrow>\r\n                                    <mml:mo>|</mml:mo>\r\n
    \                                   <mml:mi>Ω</mml:mi>\r\n                                    <mml:mo>|</mml:mo>\r\n
    \                                 </mml:mrow>\r\n                                </mml:mfrac>\r\n
    \                               <mml:mstyle>\r\n                                  <mml:mrow>\r\n
    \                                   <mml:msub>\r\n                                      <mml:mo>∫</mml:mo>\r\n
    \                                     <mml:mi>Ω</mml:mi>\r\n                                    </mml:msub>\r\n
    \                                   <mml:mrow>\r\n                                      <mml:mi>u</mml:mi>\r\n
    \                                     <mml:mo>,</mml:mo>\r\n                                    </mml:mrow>\r\n
    \                                 </mml:mrow>\r\n                                </mml:mstyle>\r\n
    \                             </mml:mrow>\r\n                            </mml:mtd>\r\n
    \                         </mml:mtr>\r\n                        </mml:mtable>\r\n
    \                     </mml:mrow>\r\n                    </mml:mrow>\r\n                  </mml:mrow>\r\n
    \               </mml:math></jats:alternatives></jats:disp-formula> are considered
    in a ball Ω = <jats:italic>B</jats:italic><jats:sub><jats:italic>R</jats:italic></jats:sub>(0)
    ⊂ ℝ<jats:sup><jats:italic>n</jats:italic></jats:sup>, where <jats:italic>n</jats:italic>
    ≥ 3 and <jats:italic>R</jats:italic> &gt; 0.</jats:p><jats:p>Under the assumption
    that <jats:italic>D</jats:italic> and <jats:italic>S</jats:italic> suitably generalize
    the prototypes given by <jats:italic>D</jats:italic>(<jats:italic>ξ</jats:italic>)
    = (<jats:italic>ξ</jats:italic> + <jats:italic>ι</jats:italic>)<jats:sup>m−1</jats:sup>
    and <jats:italic>S</jats:italic>(<jats:italic>ξ</jats:italic>) = (<jats:italic>ξ</jats:italic>
    + 1)<jats:sup>−λ−1</jats:sup> for all <jats:italic>ξ</jats:italic> &gt; 0 and
    some <jats:italic>m</jats:italic> ∈ ℝ, λ &gt;0 and <jats:italic>ι</jats:italic>
    ≥ 0 fulfilling <jats:inline-formula><jats:alternatives><jats:tex-math>$$m + \\lambda
    &lt; 1 - {2 \\over n}$$</jats:tex-math><mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mi>m</mml:mi>\r\n                  <mml:mo>+</mml:mo>\r\n
    \                 <mml:mi>λ</mml:mi>\r\n                  <mml:mo>&lt;</mml:mo>\r\n
    \                 <mml:mn>1</mml:mn>\r\n                  <mml:mo>−</mml:mo>\r\n
    \                 <mml:mfrac>\r\n                    <mml:mn>2</mml:mn>\r\n                    <mml:mi>n</mml:mi>\r\n
    \                 </mml:mfrac>\r\n                </mml:math></jats:alternatives></jats:inline-formula>,
    a considerably large set of initial data <jats:italic>u</jats:italic><jats:sub>0</jats:sub>
    is found to enforce a complete mass aggregation in infinite time in the sense
    that for any such <jats:italic>u</jats:italic><jats:sub>0</jats:sub>, an associated
    Neumann type initial-boundary value problem admits a global classical solution
    (<jats:italic>u, v</jats:italic>) satisfying <jats:disp-formula><jats:alternatives><jats:tex-math>$${1
    \\over C} \\cdot {(t + 1)^{{1 \\over \\lambda }}} \\le ||u( \\cdot ,t)|{|_{{L^\\infty
    }(\\Omega )}} \\le C \\cdot {(t + 1)^{{1 \\over \\lambda }}}\\,\\,\\,{\\rm{for}}\\,\\,{\\rm{all}}\\,\\,t
    &gt; 0$$</jats:tex-math><mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:mfrac>\r\n                      <mml:mn>1</mml:mn>\r\n
    \                     <mml:mi>C</mml:mi>\r\n                    </mml:mfrac>\r\n
    \                 </mml:mrow>\r\n                  <mml:mo>⋅</mml:mo>\r\n                  <mml:mrow>\r\n
    \                   <mml:mo>(</mml:mo>\r\n                    <mml:mi>t</mml:mi>\r\n
    \                   <mml:mo>+</mml:mo>\r\n                    <mml:mn>1</mml:mn>\r\n
    \                   <mml:msup>\r\n                      <mml:mo>)</mml:mo>\r\n
    \                     <mml:mrow>\r\n                        <mml:mrow>\r\n                          <mml:mfrac>\r\n
    \                           <mml:mn>1</mml:mn>\r\n                            <mml:mi>λ</mml:mi>\r\n
    \                         </mml:mfrac>\r\n                        </mml:mrow>\r\n
    \                     </mml:mrow>\r\n                    </mml:msup>\r\n                  </mml:mrow>\r\n
    \                 <mml:mo>≤</mml:mo>\r\n                  <mml:mrow>\r\n                    <mml:mo>|</mml:mo>\r\n
    \                 </mml:mrow>\r\n                  <mml:mrow>\r\n                    <mml:mo>|</mml:mo>\r\n
    \                 </mml:mrow>\r\n                  <mml:mi>u</mml:mi>\r\n                  <mml:mo>(</mml:mo>\r\n
    \                 <mml:mo>⋅</mml:mo>\r\n                  <mml:mo>,</mml:mo>\r\n
    \                 <mml:mi>t</mml:mi>\r\n                  <mml:mo>)</mml:mo>\r\n
    \                 <mml:mrow>\r\n                    <mml:mo>|</mml:mo>\r\n                  </mml:mrow>\r\n
    \                 <mml:mrow>\r\n                    <mml:msub>\r\n                      <mml:mrow>\r\n
    \                       <mml:mo>|</mml:mo>\r\n                      </mml:mrow>\r\n
    \                     <mml:mrow>\r\n                        <mml:mrow>\r\n                          <mml:msup>\r\n
    \                           <mml:mi>L</mml:mi>\r\n                            <mml:mi>∞</mml:mi>\r\n
    \                         </mml:msup>\r\n                        </mml:mrow>\r\n
    \                       <mml:mo>(</mml:mo>\r\n                        <mml:mi>Ω</mml:mi>\r\n
    \                       <mml:mo>)</mml:mo>\r\n                      </mml:mrow>\r\n
    \                   </mml:msub>\r\n                  </mml:mrow>\r\n                  <mml:mo>≤</mml:mo>\r\n
    \                 <mml:mi>C</mml:mi>\r\n                  <mml:mo>⋅</mml:mo>\r\n
    \                 <mml:mrow>\r\n                    <mml:mo>(</mml:mo>\r\n                    <mml:mi>t</mml:mi>\r\n
    \                   <mml:mo>+</mml:mo>\r\n                    <mml:mn>1</mml:mn>\r\n
    \                   <mml:msup>\r\n                      <mml:mo>)</mml:mo>\r\n
    \                     <mml:mrow>\r\n                        <mml:mrow>\r\n                          <mml:mfrac>\r\n
    \                           <mml:mn>1</mml:mn>\r\n                            <mml:mi>λ</mml:mi>\r\n
    \                         </mml:mfrac>\r\n                        </mml:mrow>\r\n
    \                     </mml:mrow>\r\n                    </mml:msup>\r\n                  </mml:mrow>\r\n
    \                 <mml:mspace/>\r\n                  <mml:mspace/>\r\n                  <mml:mspace/>\r\n
    \                 <mml:mrow>\r\n                    <mml:mrow>\r\n                      <mml:mi>f</mml:mi>\r\n
    \                     <mml:mi>o</mml:mi>\r\n                      <mml:mi>r</mml:mi>\r\n
    \                   </mml:mrow>\r\n                  </mml:mrow>\r\n                  <mml:mspace/>\r\n
    \                 <mml:mspace/>\r\n                  <mml:mrow>\r\n                    <mml:mrow>\r\n
    \                     <mml:mi>a</mml:mi>\r\n                      <mml:mi>l</mml:mi>\r\n
    \                     <mml:mi>l</mml:mi>\r\n                    </mml:mrow>\r\n
    \                 </mml:mrow>\r\n                  <mml:mspace/>\r\n                  <mml:mspace/>\r\n
    \                 <mml:mi>t</mml:mi>\r\n                  <mml:mo>&gt;</mml:mo>\r\n
    \                 <mml:mn>0</mml:mn>\r\n                </mml:math></jats:alternatives></jats:disp-formula>
    as well as <jats:disp-formula><jats:alternatives><jats:tex-math>$$||u( \\cdot
    \\,,t)|{|_{{L^1}(\\Omega \\backslash {B_{{r_0}}}(0))}} \\to 0\\,\\,\\,{\\rm{as}}\\,\\,t
    \\to \\infty \\,\\,\\,{\\rm{for}}\\,\\,{\\rm{all}}\\,\\,{r_0} \\in (0,R)$$</jats:tex-math><mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mo>|</mml:mo>\r\n
    \                 <mml:mo>|</mml:mo>\r\n                  <mml:mi>u</mml:mi>\r\n
    \                 <mml:mo>(</mml:mo>\r\n                  <mml:mo>⋅</mml:mo>\r\n
    \                 <mml:mo>,</mml:mo>\r\n                  <mml:mi>t</mml:mi>\r\n
    \                 <mml:mo>)</mml:mo>\r\n                  <mml:mo>|</mml:mo>\r\n
    \                 <mml:msub>\r\n                    <mml:mo>|</mml:mo>\r\n                    <mml:mrow>\r\n
    \                     <mml:msup>\r\n                        <mml:mi>L</mml:mi>\r\n
    \                       <mml:mn>1</mml:mn>\r\n                      </mml:msup>\r\n
    \                     <mml:mo>(</mml:mo>\r\n                      <mml:mi>Ω</mml:mi>\r\n
    \                     <mml:mo>\\</mml:mo>\r\n                      <mml:msub>\r\n
    \                       <mml:mi>B</mml:mi>\r\n                        <mml:mrow>\r\n
    \                         <mml:msub>\r\n                            <mml:mi>r</mml:mi>\r\n
    \                           <mml:mn>0</mml:mn>\r\n                          </mml:msub>\r\n
    \                       </mml:mrow>\r\n                      </mml:msub>\r\n                      <mml:mo>(</mml:mo>\r\n
    \                     <mml:mn>0</mml:mn>\r\n                      <mml:mo>)</mml:mo>\r\n
    \                     <mml:mo>)</mml:mo>\r\n                    </mml:mrow>\r\n
    \                 </mml:msub>\r\n                  <mml:mo>→</mml:mo>\r\n                  <mml:mn>0</mml:mn>\r\n
    \                 <mml:mtext>as</mml:mtext>\r\n                  <mml:mi>t</mml:mi>\r\n
    \                 <mml:mo>→</mml:mo>\r\n                  <mml:mi>∞</mml:mi>\r\n
    \                 <mml:mtext>for all</mml:mtext>\r\n                  <mml:msub>\r\n
    \                   <mml:mi>r</mml:mi>\r\n                    <mml:mn>0</mml:mn>\r\n
    \                 </mml:msub>\r\n                  <mml:mo>∈</mml:mo>\r\n                  <mml:mo>(</mml:mo>\r\n
    \                 <mml:mn>0</mml:mn>\r\n                  <mml:mo>,</mml:mo>\r\n
    \                 <mml:mi>R</mml:mi>\r\n                  <mml:mo>)</mml:mo>\r\n
    \               </mml:math></jats:alternatives></jats:disp-formula> with some
    <jats:italic>C</jats:italic> &gt; 0.</jats:p>"
author:
- first_name: Michael
  full_name: Winkler, Michael
  id: '31496'
  last_name: Winkler
citation:
  ama: Winkler M. Complete infinite-time mass aggregation in a quasilinear Keller–Segel
    system. <i>Israel Journal of Mathematics</i>. 2024;263(1):93-127. doi:<a href="https://doi.org/10.1007/s11856-024-2618-9">10.1007/s11856-024-2618-9</a>
  apa: Winkler, M. (2024). Complete infinite-time mass aggregation in a quasilinear
    Keller–Segel system. <i>Israel Journal of Mathematics</i>, <i>263</i>(1), 93–127.
    <a href="https://doi.org/10.1007/s11856-024-2618-9">https://doi.org/10.1007/s11856-024-2618-9</a>
  bibtex: '@article{Winkler_2024, title={Complete infinite-time mass aggregation in
    a quasilinear Keller–Segel system}, volume={263}, DOI={<a href="https://doi.org/10.1007/s11856-024-2618-9">10.1007/s11856-024-2618-9</a>},
    number={1}, journal={Israel Journal of Mathematics}, publisher={Springer Science
    and Business Media LLC}, author={Winkler, Michael}, year={2024}, pages={93–127}
    }'
  chicago: 'Winkler, Michael. “Complete Infinite-Time Mass Aggregation in a Quasilinear
    Keller–Segel System.” <i>Israel Journal of Mathematics</i> 263, no. 1 (2024):
    93–127. <a href="https://doi.org/10.1007/s11856-024-2618-9">https://doi.org/10.1007/s11856-024-2618-9</a>.'
  ieee: 'M. Winkler, “Complete infinite-time mass aggregation in a quasilinear Keller–Segel
    system,” <i>Israel Journal of Mathematics</i>, vol. 263, no. 1, pp. 93–127, 2024,
    doi: <a href="https://doi.org/10.1007/s11856-024-2618-9">10.1007/s11856-024-2618-9</a>.'
  mla: Winkler, Michael. “Complete Infinite-Time Mass Aggregation in a Quasilinear
    Keller–Segel System.” <i>Israel Journal of Mathematics</i>, vol. 263, no. 1, Springer
    Science and Business Media LLC, 2024, pp. 93–127, doi:<a href="https://doi.org/10.1007/s11856-024-2618-9">10.1007/s11856-024-2618-9</a>.
  short: M. Winkler, Israel Journal of Mathematics 263 (2024) 93–127.
date_created: 2025-12-18T19:08:34Z
date_updated: 2025-12-18T20:14:59Z
doi: 10.1007/s11856-024-2618-9
intvolume: '       263'
issue: '1'
language:
- iso: eng
page: 93-127
publication: Israel Journal of Mathematics
publication_identifier:
  issn:
  - 0021-2172
  - 1565-8511
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Complete infinite-time mass aggregation in a quasilinear Keller–Segel system
type: journal_article
user_id: '31496'
volume: 263
year: '2024'
...
---
_id: '63346'
abstract:
- lang: eng
  text: <jats:p> Lightweight design by using low-density and load-adapted materials
    can reduce the weight of vehicles and the emissions generated during operation.
    However, the usage of different materials requires innovative joining technologies
    with increased versatility. In this investigation, the focus is on describing
    and characterising the failure behaviour of connections manufactured by an innovative
    thermomechanical joining process with adaptable auxiliary joining elements in
    single-lap tensile-shear tests. In order to analyse the failure development in
    detail, the specimens are investigated using in-situ computed tomography (in-situ
    CT). Here, the tensile-shear test is interrupted at points of interest and CT
    scans are conducted under load. In addition, the interrupted in-situ testing procedure
    is validated by comparing the loading behaviour with conventional continuous tensile-shear
    tests. The results of the in-situ investigations of joints with varying material
    combinations clearly describe the cause of failure, allowing conclusions towards
    an improved joint design. </jats:p>
author:
- first_name: Thomas
  full_name: Borgert, Thomas
  id: '83141'
  last_name: Borgert
- first_name: D
  full_name: Köhler, D
  last_name: Köhler
- first_name: Eugen
  full_name: Wiens, Eugen
  id: '7888'
  last_name: Wiens
- first_name: R
  full_name: Kupfer, R
  last_name: Kupfer
- first_name: J
  full_name: Troschitz, J
  last_name: Troschitz
- first_name: Werner
  full_name: Homberg, Werner
  id: '233'
  last_name: Homberg
- first_name: M
  full_name: Gude, M
  last_name: Gude
citation:
  ama: 'Borgert T, Köhler D, Wiens E, et al. In-situ computed tomography analysis
    of the failure mechanisms of thermomechanically manufactured joints with auxiliary
    joining element. <i>Proceedings of the Institution of Mechanical Engineers, Part
    L: Journal of Materials: Design and Applications</i>. 2024;238(12):2299-2306.
    doi:<a href="https://doi.org/10.1177/14644207241232233">10.1177/14644207241232233</a>'
  apa: 'Borgert, T., Köhler, D., Wiens, E., Kupfer, R., Troschitz, J., Homberg, W.,
    &#38; Gude, M. (2024). In-situ computed tomography analysis of the failure mechanisms
    of thermomechanically manufactured joints with auxiliary joining element. <i>Proceedings
    of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
    and Applications</i>, <i>238</i>(12), 2299–2306. <a href="https://doi.org/10.1177/14644207241232233">https://doi.org/10.1177/14644207241232233</a>'
  bibtex: '@article{Borgert_Köhler_Wiens_Kupfer_Troschitz_Homberg_Gude_2024, title={In-situ
    computed tomography analysis of the failure mechanisms of thermomechanically manufactured
    joints with auxiliary joining element}, volume={238}, DOI={<a href="https://doi.org/10.1177/14644207241232233">10.1177/14644207241232233</a>},
    number={12}, journal={Proceedings of the Institution of Mechanical Engineers,
    Part L: Journal of Materials: Design and Applications}, publisher={SAGE Publications},
    author={Borgert, Thomas and Köhler, D and Wiens, Eugen and Kupfer, R and Troschitz,
    J and Homberg, Werner and Gude, M}, year={2024}, pages={2299–2306} }'
  chicago: 'Borgert, Thomas, D Köhler, Eugen Wiens, R Kupfer, J Troschitz, Werner
    Homberg, and M Gude. “In-Situ Computed Tomography Analysis of the Failure Mechanisms
    of Thermomechanically Manufactured Joints with Auxiliary Joining Element.” <i>Proceedings
    of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
    and Applications</i> 238, no. 12 (2024): 2299–2306. <a href="https://doi.org/10.1177/14644207241232233">https://doi.org/10.1177/14644207241232233</a>.'
  ieee: 'T. Borgert <i>et al.</i>, “In-situ computed tomography analysis of the failure
    mechanisms of thermomechanically manufactured joints with auxiliary joining element,”
    <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of
    Materials: Design and Applications</i>, vol. 238, no. 12, pp. 2299–2306, 2024,
    doi: <a href="https://doi.org/10.1177/14644207241232233">10.1177/14644207241232233</a>.'
  mla: 'Borgert, Thomas, et al. “In-Situ Computed Tomography Analysis of the Failure
    Mechanisms of Thermomechanically Manufactured Joints with Auxiliary Joining Element.”
    <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of
    Materials: Design and Applications</i>, vol. 238, no. 12, SAGE Publications, 2024,
    pp. 2299–306, doi:<a href="https://doi.org/10.1177/14644207241232233">10.1177/14644207241232233</a>.'
  short: 'T. Borgert, D. Köhler, E. Wiens, R. Kupfer, J. Troschitz, W. Homberg, M.
    Gude, Proceedings of the Institution of Mechanical Engineers, Part L: Journal
    of Materials: Design and Applications 238 (2024) 2299–2306.'
date_created: 2025-12-19T09:13:30Z
date_updated: 2025-12-22T10:40:28Z
department:
- _id: '156'
doi: 10.1177/14644207241232233
intvolume: '       238'
issue: '12'
language:
- iso: eng
page: 2299-2306
publication: 'Proceedings of the Institution of Mechanical Engineers, Part L: Journal
  of Materials: Design and Applications'
publication_identifier:
  issn:
  - 1464-4207
  - 2041-3076
publication_status: published
publisher: SAGE Publications
quality_controlled: '1'
status: public
title: In-situ computed tomography analysis of the failure mechanisms of thermomechanically
  manufactured joints with auxiliary joining element
type: journal_article
user_id: '7888'
volume: 238
year: '2024'
...
---
_id: '56289'
author:
- first_name: Karl
  full_name: Seeger, Karl
  last_name: Seeger
- first_name: Matteo
  full_name: Genovese, Matteo
  last_name: Genovese
- first_name: Alexander
  full_name: Schlüter, Alexander
  id: '103302'
  last_name: Schlüter
  orcid: 0000-0002-2569-1624
- first_name: Christina
  full_name: Kockel, Christina
  last_name: Kockel
- first_name: Orlando
  full_name: Corigliano, Orlando
  last_name: Corigliano
- first_name: Edith Benjamina
  full_name: Díaz Canales, Edith Benjamina
  id: '105704'
  last_name: Díaz Canales
  orcid: 0009-0007-2748-0074
- first_name: Petronilla
  full_name: Fragiacomo, Petronilla
  last_name: Fragiacomo
- first_name: Aaron
  full_name: Praktiknjo, Aaron
  last_name: Praktiknjo
citation:
  ama: Seeger K, Genovese M, Schlüter A, et al. Evaluating Supply Scenarios for Hydrogen
    and Green Fuels from Canada, Chile, and Algeria to Germany via a Techno-Economic
    Assessment. <i>United States Association for Energy Economics (USAEE) &#38; International
    Association for Energy Economics (IAEE) Research Paper Series</i>. Published online
    2024.
  apa: Seeger, K., Genovese, M., Schlüter, A., Kockel, C., Corigliano, O., Díaz Canales,
    E. B., Fragiacomo, P., &#38; Praktiknjo, A. (2024). Evaluating Supply Scenarios
    for Hydrogen and Green Fuels from Canada, Chile, and Algeria to Germany via a
    Techno-Economic Assessment. In <i>United States Association for Energy Economics
    (USAEE) &#38; International Association for Energy Economics (IAEE) Research Paper
    Series</i>. Elsevier BV.
  bibtex: '@article{Seeger_Genovese_Schlüter_Kockel_Corigliano_Díaz Canales_Fragiacomo_Praktiknjo_2024,
    title={Evaluating Supply Scenarios for Hydrogen and Green Fuels from Canada, Chile,
    and Algeria to Germany via a Techno-Economic Assessment}, journal={United States
    Association for Energy Economics (USAEE) &#38; International Association for Energy
    Economics (IAEE) Research Paper Series}, publisher={Elsevier BV}, author={Seeger,
    Karl and Genovese, Matteo and Schlüter, Alexander and Kockel, Christina and Corigliano,
    Orlando and Díaz Canales, Edith Benjamina and Fragiacomo, Petronilla and Praktiknjo,
    Aaron}, year={2024} }'
  chicago: Seeger, Karl, Matteo Genovese, Alexander Schlüter, Christina Kockel, Orlando
    Corigliano, Edith Benjamina Díaz Canales, Petronilla Fragiacomo, and Aaron Praktiknjo.
    “Evaluating Supply Scenarios for Hydrogen and Green Fuels from Canada, Chile,
    and Algeria to Germany via a Techno-Economic Assessment.” <i>United States Association
    for Energy Economics (USAEE) &#38; International Association for Energy Economics
    (IAEE) Research Paper Series</i>. Elsevier BV, 2024.
  ieee: K. Seeger <i>et al.</i>, “Evaluating Supply Scenarios for Hydrogen and Green
    Fuels from Canada, Chile, and Algeria to Germany via a Techno-Economic Assessment,”
    <i>United States Association for Energy Economics (USAEE) &#38; International
    Association for Energy Economics (IAEE) Research Paper Series</i>. Elsevier BV,
    2024.
  mla: Seeger, Karl, et al. “Evaluating Supply Scenarios for Hydrogen and Green Fuels
    from Canada, Chile, and Algeria to Germany via a Techno-Economic Assessment.”
    <i>United States Association for Energy Economics (USAEE) &#38; International
    Association for Energy Economics (IAEE) Research Paper Series</i>, Elsevier BV,
    2024.
  short: K. Seeger, M. Genovese, A. Schlüter, C. Kockel, O. Corigliano, E.B. Díaz
    Canales, P. Fragiacomo, A. Praktiknjo, United States Association for Energy Economics
    (USAEE) &#38; International Association for Energy Economics (IAEE) Research Paper
    Series (2024).
date_created: 2024-10-01T09:34:06Z
date_updated: 2026-01-06T08:00:25Z
department:
- _id: '876'
- _id: '9'
- _id: '393'
- _id: '321'
external_id:
  unknown:
  - https://dx.doi.org/10.2139/ssrn.4966589
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://dx.doi.org/10.2139/ssrn.4966589
oa: '1'
publication: United States Association for Energy Economics (USAEE) & International
  Association for Energy Economics (IAEE) Research Paper Series
publication_status: published
publisher: Elsevier BV
status: public
title: Evaluating Supply Scenarios for Hydrogen and Green Fuels from Canada, Chile,
  and Algeria to Germany via a Techno-Economic Assessment
type: preprint
user_id: '103302'
year: '2024'
...
---
_id: '56357'
alternative_title:
- SDEWES2024.1202
author:
- first_name: Edith Benjamina
  full_name: Díaz Canales, Edith Benjamina
  id: '105704'
  last_name: Díaz Canales
  orcid: 0009-0007-2748-0074
- first_name: Alfredo
  full_name: Avila , Alfredo
  last_name: 'Avila '
- first_name: 'Sabine '
  full_name: 'Schlüter, Sabine '
  last_name: Schlüter
- first_name: Erick
  full_name: Lacayo, Erick
  last_name: Lacayo
- first_name: Alexander
  full_name: Schlüter, Alexander
  id: '103302'
  last_name: Schlüter
  orcid: 0000-0002-2569-1624
citation:
  ama: 'Díaz Canales EB, Avila  A, Schlüter S, Lacayo E, Schlüter A. Implementing
    Strategic Environmental Assessment (SEA) in the Global South, a challenge: Nicaragua
    as a case study. In: <i>19th Conference on Sustainable Development of Energy,
    Water and Environment Systems</i>. Digital Proceedings (Conference on Sustainable
    Development of Energy, Water and Environment Systems).  Faculty of Mechanical
    Engineering and Naval Architecture, Zagreb; 2024.'
  apa: 'Díaz Canales, E. B., Avila , A., Schlüter, S., Lacayo, E., &#38; Schlüter,
    A. (2024). Implementing Strategic Environmental Assessment (SEA) in the Global
    South, a challenge: Nicaragua as a case study. <i>19th Conference on Sustainable
    Development of Energy, Water and Environment Systems</i>. 19th Conference on Sustainable
    Development of Energy, Water and Environment Systems (SDEWES), Rome.'
  bibtex: '@inproceedings{Díaz Canales_Avila _Schlüter_Lacayo_Schlüter_2024, series={Digital
    Proceedings (Conference on Sustainable Development of Energy, Water and Environment
    Systems)}, title={Implementing Strategic Environmental Assessment (SEA) in the
    Global South, a challenge: Nicaragua as a case study.}, booktitle={19th Conference
    on Sustainable Development of Energy, Water and Environment Systems}, publisher={
    Faculty of Mechanical Engineering and Naval Architecture, Zagreb}, author={Díaz
    Canales, Edith Benjamina and Avila , Alfredo and Schlüter, Sabine  and Lacayo,
    Erick and Schlüter, Alexander}, year={2024}, collection={Digital Proceedings (Conference
    on Sustainable Development of Energy, Water and Environment Systems)} }'
  chicago: 'Díaz Canales, Edith Benjamina, Alfredo Avila , Sabine  Schlüter, Erick
    Lacayo, and Alexander Schlüter. “Implementing Strategic Environmental Assessment
    (SEA) in the Global South, a Challenge: Nicaragua as a Case Study.” In <i>19th
    Conference on Sustainable Development of Energy, Water and Environment Systems</i>.
    Digital Proceedings (Conference on Sustainable Development of Energy, Water and
    Environment Systems).  Faculty of Mechanical Engineering and Naval Architecture,
    Zagreb, 2024.'
  ieee: 'E. B. Díaz Canales, A. Avila , S. Schlüter, E. Lacayo, and A. Schlüter, “Implementing
    Strategic Environmental Assessment (SEA) in the Global South, a challenge: Nicaragua
    as a case study.,” presented at the 19th Conference on Sustainable Development
    of Energy, Water and Environment Systems (SDEWES), Rome, 2024.'
  mla: 'Díaz Canales, Edith Benjamina, et al. “Implementing Strategic Environmental
    Assessment (SEA) in the Global South, a Challenge: Nicaragua as a Case Study.”
    <i>19th Conference on Sustainable Development of Energy, Water and Environment
    Systems</i>,  Faculty of Mechanical Engineering and Naval Architecture, Zagreb,
    2024.'
  short: 'E.B. Díaz Canales, A. Avila , S. Schlüter, E. Lacayo, A. Schlüter, in: 19th
    Conference on Sustainable Development of Energy, Water and Environment Systems,  Faculty
    of Mechanical Engineering and Naval Architecture, Zagreb, 2024.'
conference:
  end_date: 2024-09-12
  location: Rome
  name: 19th Conference on Sustainable Development of Energy, Water and Environment
    Systems (SDEWES)
  start_date: 2024-09-08
date_created: 2024-10-07T10:15:05Z
date_updated: 2026-01-06T08:14:34Z
department:
- _id: '876'
- _id: '321'
- _id: '9'
- _id: '393'
language:
- iso: eng
publication: 19th Conference on Sustainable Development of Energy, Water and Environment
  Systems
publication_identifier:
  unknown:
  - 2706-3690
publisher: ' Faculty of Mechanical Engineering and Naval Architecture, Zagreb'
series_title: Digital Proceedings (Conference on Sustainable Development of Energy,
  Water and Environment Systems)
status: public
title: 'Implementing Strategic Environmental Assessment (SEA) in the Global South,
  a challenge: Nicaragua as a case study.'
type: conference
user_id: '103302'
year: '2024'
...
---
_id: '57190'
abstract:
- lang: eng
  text: This paper deals with the modeling of a soft sensor for detecting α’-martensite
    evolution from the micromagnetic signals that are measured during the reverse
    flow forming of metastable AISI 304L austenitic steel. This model can be prospectively
    used inside a closed-loop property-controlled flow forming process. To achieve
    this, optimization by means of a non-linear regression of experimental data was
    carried out. To collect the experimental data, specimens were produced by flow
    forming seamless tubes at room temperature. Using a combination of production
    parameters (like the infeed depth and feed rate), specimens with different α’-martensite
    contents and wall-thickness reductions were produced. An equation to compute α’-martensite
    from both specific production-process parameters and micromagnetic Barkhausen
    noise (MBN) measurements was obtained using numerical methods. In this process,
    the behavior of the quantity of interest (namely, the α’-martensite content) was
    mathematically evaluated with respect to non-destructive MBN data and the feed
    rate that was used to produce the components. A combination of exponential and
    potential functions was defined as the ansatz functions of the model. The obtained
    model was validated online and offline during the real flow forming of workpieces,
    obtaining average deviations of up to 7% α’-martensite with respect to the model.
    The implementation of the soft sensor model for property-controlled production
    represents an important milestone for producing high-added-value components on
    the basis of a well-understood process-microstructure-property relationship.
author:
- first_name: 'Julian '
  full_name: 'Rozo Vasquez, Julian '
  last_name: Rozo Vasquez
- first_name: Lukas
  full_name: Kersting, Lukas
  last_name: Kersting
- first_name: Bahman
  full_name: Arian, Bahman
  id: '36287'
  last_name: Arian
- first_name: Werner
  full_name: Homberg, Werner
  id: '233'
  last_name: Homberg
- first_name: Ansgar
  full_name: Trächtler, Ansgar
  id: '552'
  last_name: Trächtler
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
citation:
  ama: 'Rozo Vasquez J, Kersting L, Arian B, Homberg W, Trächtler A, Walther F. Soft
    Sensor Model of Phase Transformation During Flow Forming of Metastable Austenitic
    Steel AISI 304L. In: <i>Lecture Notes in Mechanical Engineering</i>. Springer
    International Publishing; 2024. doi:<a href="https://doi.org/10.1007/978-3-031-58006-2_10">10.1007/978-3-031-58006-2_10</a>'
  apa: Rozo Vasquez, J., Kersting, L., Arian, B., Homberg, W., Trächtler, A., &#38;
    Walther, F. (2024). Soft Sensor Model of Phase Transformation During Flow Forming
    of Metastable Austenitic Steel AISI 304L. In <i>Lecture Notes in Mechanical Engineering</i>.
    Springer International Publishing. <a href="https://doi.org/10.1007/978-3-031-58006-2_10">https://doi.org/10.1007/978-3-031-58006-2_10</a>
  bibtex: '@inbook{Rozo Vasquez_Kersting_Arian_Homberg_Trächtler_Walther_2024, place={Cham},
    title={Soft Sensor Model of Phase Transformation During Flow Forming of Metastable
    Austenitic Steel AISI 304L}, DOI={<a href="https://doi.org/10.1007/978-3-031-58006-2_10">10.1007/978-3-031-58006-2_10</a>},
    booktitle={Lecture Notes in Mechanical Engineering}, publisher={Springer International
    Publishing}, author={Rozo Vasquez, Julian  and Kersting, Lukas and Arian, Bahman
    and Homberg, Werner and Trächtler, Ansgar and Walther, Frank}, year={2024} }'
  chicago: 'Rozo Vasquez, Julian , Lukas Kersting, Bahman Arian, Werner Homberg, Ansgar
    Trächtler, and Frank Walther. “Soft Sensor Model of Phase Transformation During
    Flow Forming of Metastable Austenitic Steel AISI 304L.” In <i>Lecture Notes in
    Mechanical Engineering</i>. Cham: Springer International Publishing, 2024. <a
    href="https://doi.org/10.1007/978-3-031-58006-2_10">https://doi.org/10.1007/978-3-031-58006-2_10</a>.'
  ieee: 'J. Rozo Vasquez, L. Kersting, B. Arian, W. Homberg, A. Trächtler, and F.
    Walther, “Soft Sensor Model of Phase Transformation During Flow Forming of Metastable
    Austenitic Steel AISI 304L,” in <i>Lecture Notes in Mechanical Engineering</i>,
    Cham: Springer International Publishing, 2024.'
  mla: Rozo Vasquez, Julian, et al. “Soft Sensor Model of Phase Transformation During
    Flow Forming of Metastable Austenitic Steel AISI 304L.” <i>Lecture Notes in Mechanical
    Engineering</i>, Springer International Publishing, 2024, doi:<a href="https://doi.org/10.1007/978-3-031-58006-2_10">10.1007/978-3-031-58006-2_10</a>.
  short: 'J. Rozo Vasquez, L. Kersting, B. Arian, W. Homberg, A. Trächtler, F. Walther,
    in: Lecture Notes in Mechanical Engineering, Springer International Publishing,
    Cham, 2024.'
date_created: 2024-11-18T10:24:06Z
date_updated: 2024-11-18T10:39:03Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
doi: 10.1007/978-3-031-58006-2_10
language:
- iso: eng
place: Cham
publication: Lecture Notes in Mechanical Engineering
publication_identifier:
  isbn:
  - '9783031580055'
  - '9783031580062'
  issn:
  - 2195-4356
  - 2195-4364
publication_status: published
publisher: Springer International Publishing
quality_controlled: '1'
status: public
title: Soft Sensor Model of Phase Transformation During Flow Forming of Metastable
  Austenitic Steel AISI 304L
type: book_chapter
user_id: '41470'
year: '2024'
...