---
_id: '57467'
abstract:
- lang: eng
text: Additive manufacturing of metallic components often results in the
formation of columnar grain structures aligned along the build direction. These
elongated grains can introduce anisotropy, negatively impacting the mechanical
properties of the components. This study aimed to achieve controlled solidification
with a fine-grained microstructure to enhance the mechanical performance of printed
parts. Stainless steel 316L was used as the test material. High-intensity ultrasound
was applied during the direct energy deposition (DED) process to inhibit the formation
of columnar grains. The investigation emphasized the importance of amplitude changes
of the ultrasound wave as the system’s geometry continuously evolves with the
addition of multiple layers and assessed how these changes influence the grain
size and distribution. Initial tests revealed significant amplitude fluctuations
during layer deposition, highlighting the impact of layer deposition on process
uniformity. The mechanical results demonstrated that the application of ultrasound
effectively refined the grain structure, leading to a 15% increase in tensile
strength compared to conventionally additively manufactured samples.
article_number: '1001'
author:
- first_name: Dennis
full_name: Lehnert, Dennis
id: '90491'
last_name: Lehnert
- first_name: Christian
full_name: Bödger, Christian
id: '93904'
last_name: Bödger
- first_name: Philipp
full_name: Pabel, Philipp
id: '67374'
last_name: Pabel
- first_name: Claus
full_name: Scheidemann, Claus
id: '38259'
last_name: Scheidemann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Stefan
full_name: Gnaase, Stefan
id: '25730'
last_name: Gnaase
- first_name: David
full_name: Kostka, David
last_name: Kostka
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: Lehnert D, Bödger C, Pabel P, et al. The Influence of Ultrasonic Irradiation
of a 316L Weld Pool Produced by DED on the Mechanical Properties of the Produced
Component. Crystals. 2024;14(11). doi:10.3390/cryst14111001
apa: Lehnert, D., Bödger, C., Pabel, P., Scheidemann, C., Hemsel, T., Gnaase, S.,
Kostka, D., & Tröster, T. (2024). The Influence of Ultrasonic Irradiation
of a 316L Weld Pool Produced by DED on the Mechanical Properties of the Produced
Component. Crystals, 14(11), Article 1001. https://doi.org/10.3390/cryst14111001
bibtex: '@article{Lehnert_Bödger_Pabel_Scheidemann_Hemsel_Gnaase_Kostka_Tröster_2024,
title={The Influence of Ultrasonic Irradiation of a 316L Weld Pool Produced by
DED on the Mechanical Properties of the Produced Component}, volume={14}, DOI={10.3390/cryst14111001}, number={111001},
journal={Crystals}, publisher={MDPI AG}, author={Lehnert, Dennis and Bödger, Christian
and Pabel, Philipp and Scheidemann, Claus and Hemsel, Tobias and Gnaase, Stefan
and Kostka, David and Tröster, Thomas}, year={2024} }'
chicago: Lehnert, Dennis, Christian Bödger, Philipp Pabel, Claus Scheidemann, Tobias
Hemsel, Stefan Gnaase, David Kostka, and Thomas Tröster. “The Influence of Ultrasonic
Irradiation of a 316L Weld Pool Produced by DED on the Mechanical Properties of
the Produced Component.” Crystals 14, no. 11 (2024). https://doi.org/10.3390/cryst14111001.
ieee: 'D. Lehnert et al., “The Influence of Ultrasonic Irradiation of a 316L
Weld Pool Produced by DED on the Mechanical Properties of the Produced Component,”
Crystals, vol. 14, no. 11, Art. no. 1001, 2024, doi: 10.3390/cryst14111001.'
mla: Lehnert, Dennis, et al. “The Influence of Ultrasonic Irradiation of a 316L
Weld Pool Produced by DED on the Mechanical Properties of the Produced Component.”
Crystals, vol. 14, no. 11, 1001, MDPI AG, 2024, doi:10.3390/cryst14111001.
short: D. Lehnert, C. Bödger, P. Pabel, C. Scheidemann, T. Hemsel, S. Gnaase, D.
Kostka, T. Tröster, Crystals 14 (2024).
date_created: 2024-11-28T08:45:06Z
date_updated: 2026-02-23T08:07:37Z
ddc:
- '670'
department:
- _id: '149'
- _id: '321'
- _id: '9'
doi: 10.3390/cryst14111001
file:
- access_level: closed
content_type: application/pdf
creator: dlehnert
date_created: 2024-11-28T08:52:48Z
date_updated: 2024-11-28T08:52:48Z
file_id: '57470'
file_name: crystals-14-01001-v2 (4).pdf
file_size: 5779744
relation: main_file
success: 1
file_date_updated: 2024-11-28T08:52:48Z
has_accepted_license: '1'
intvolume: ' 14'
issue: '11'
language:
- iso: eng
publication: Crystals
publication_identifier:
issn:
- 2073-4352
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: The Influence of Ultrasonic Irradiation of a 316L Weld Pool Produced by DED
on the Mechanical Properties of the Produced Component
type: journal_article
user_id: '93904'
volume: 14
year: '2024'
...
---
_id: '52211'
author:
- first_name: Felix
full_name: Beule, Felix
id: '66192'
last_name: Beule
- first_name: Dominik
full_name: Teutenberg, Dominik
id: '537'
last_name: Teutenberg
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Beule F, Teutenberg D, Meschut G. Klebstoffmodell - Parameteridentifikation,
Verifikation und Validierung für den Lastfall Crash. In: DECHEMA, ed. DECHEMA-Workshop
Für Klebstoffanwender: Simulation von Klebverbindungen. ; 2024.'
apa: 'Beule, F., Teutenberg, D., & Meschut, G. (2024). Klebstoffmodell - Parameteridentifikation,
Verifikation und Validierung für den Lastfall Crash. In DECHEMA (Ed.), DECHEMA-Workshop
für Klebstoffanwender: Simulation von Klebverbindungen.'
bibtex: '@inproceedings{Beule_Teutenberg_Meschut_2024, title={Klebstoffmodell -
Parameteridentifikation, Verifikation und Validierung für den Lastfall Crash},
booktitle={DECHEMA-Workshop für Klebstoffanwender: Simulation von Klebverbindungen},
author={Beule, Felix and Teutenberg, Dominik and Meschut, Gerson}, editor={DECHEMA},
year={2024} }'
chicago: 'Beule, Felix, Dominik Teutenberg, and Gerson Meschut. “Klebstoffmodell
- Parameteridentifikation, Verifikation Und Validierung Für Den Lastfall Crash.”
In DECHEMA-Workshop Für Klebstoffanwender: Simulation von Klebverbindungen,
edited by DECHEMA, 2024.'
ieee: 'F. Beule, D. Teutenberg, and G. Meschut, “Klebstoffmodell - Parameteridentifikation,
Verifikation und Validierung für den Lastfall Crash,” in DECHEMA-Workshop für
Klebstoffanwender: Simulation von Klebverbindungen, Köln, 2024.'
mla: 'Beule, Felix, et al. “Klebstoffmodell - Parameteridentifikation, Verifikation
Und Validierung Für Den Lastfall Crash.” DECHEMA-Workshop Für Klebstoffanwender:
Simulation von Klebverbindungen, edited by DECHEMA, 2024.'
short: 'F. Beule, D. Teutenberg, G. Meschut, in: DECHEMA (Ed.), DECHEMA-Workshop
Für Klebstoffanwender: Simulation von Klebverbindungen, 2024.'
conference:
end_date: 2024-02-26
location: Köln
name: 'DECHEMA-Workshop für Klebstoffanwender: Simulation von Klebverbindungen'
start_date: 2024-02-26
corporate_editor:
- DECHEMA
date_created: 2024-02-29T12:19:57Z
date_updated: 2026-02-23T08:26:01Z
department:
- _id: '157'
language:
- iso: eng
publication: 'DECHEMA-Workshop für Klebstoffanwender: Simulation von Klebverbindungen'
quality_controlled: '1'
status: public
title: Klebstoffmodell - Parameteridentifikation, Verifikation und Validierung für
den Lastfall Crash
type: conference
user_id: '537'
year: '2024'
...
---
_id: '52214'
author:
- first_name: Felix
full_name: Beule, Felix
id: '66192'
last_name: Beule
- first_name: Dominik
full_name: Teutenberg, Dominik
id: '537'
last_name: Teutenberg
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Lars
full_name: Schmelzle, Lars
last_name: Schmelzle
- first_name: Gunnar
full_name: Possart, Gunnar
last_name: Possart
- first_name: Julia
full_name: Mergheim, Julia
last_name: Mergheim
- first_name: Paul
full_name: Steinmann, Paul
last_name: Steinmann
citation:
ama: 'Beule F, Teutenberg D, Meschut G, et al. Methodenentwicklung zur Simulation
von hyperelastischen Klebverbindungen unter Crashbelastung. In: DECHEMA, ed. ;
2024.'
apa: Beule, F., Teutenberg, D., Meschut, G., Schmelzle, L., Possart, G., Mergheim,
J., & Steinmann, P. (2024). Methodenentwicklung zur Simulation von hyperelastischen
Klebverbindungen unter Crashbelastung (DECHEMA, Ed.).
bibtex: '@inproceedings{Beule_Teutenberg_Meschut_Schmelzle_Possart_Mergheim_Steinmann_2024,
title={Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen
unter Crashbelastung}, author={Beule, Felix and Teutenberg, Dominik and Meschut,
Gerson and Schmelzle, Lars and Possart, Gunnar and Mergheim, Julia and Steinmann,
Paul}, editor={DECHEMA}, year={2024} }'
chicago: Beule, Felix, Dominik Teutenberg, Gerson Meschut, Lars Schmelzle, Gunnar
Possart, Julia Mergheim, and Paul Steinmann. “Methodenentwicklung Zur Simulation
von Hyperelastischen Klebverbindungen Unter Crashbelastung.” edited by DECHEMA,
2024.
ieee: F. Beule et al., “Methodenentwicklung zur Simulation von hyperelastischen
Klebverbindungen unter Crashbelastung,” Köln, 2024.
mla: Beule, Felix, et al. Methodenentwicklung Zur Simulation von Hyperelastischen
Klebverbindungen Unter Crashbelastung. Edited by DECHEMA, 2024.
short: 'F. Beule, D. Teutenberg, G. Meschut, L. Schmelzle, G. Possart, J. Mergheim,
P. Steinmann, in: DECHEMA (Ed.), 2024.'
conference:
end_date: 2024-02-28
location: Köln
name: '24. Kolloquium: Gemeinsame Forschung in der Klebtechnik'
start_date: 2024-02-27
corporate_editor:
- DECHEMA
date_created: 2024-02-29T12:24:51Z
date_updated: 2026-02-23T08:26:30Z
department:
- _id: '157'
language:
- iso: eng
quality_controlled: '1'
status: public
title: Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter
Crashbelastung
type: conference
user_id: '537'
year: '2024'
...
---
_id: '58800'
author:
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Georg
full_name: Seitz, Georg
last_name: Seitz
- first_name: Vincent
full_name: Schreiber, Vincent
last_name: Schreiber
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- 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
citation:
ama: Yang K, Seitz G, Schreiber V, et al. Validierung von Methoden zur Vermeidung
von Liquid Metal Embrittlement an realitätsnahen Prinzipbauteilen.; 2024.
apa: Yang, K., Seitz, G., Schreiber, V., Meschut, G., Biegler, M., Jüttner, S.,
& Rethmeier, M. (2024). Validierung von Methoden zur Vermeidung von Liquid
Metal Embrittlement an realitätsnahen Prinzipbauteilen.
bibtex: '@book{Yang_Seitz_Schreiber_Meschut_Biegler_Jüttner_Rethmeier_2024, title={Validierung
von Methoden zur Vermeidung von Liquid Metal Embrittlement an realitätsnahen Prinzipbauteilen},
author={Yang, Keke and Seitz, Georg and Schreiber, Vincent and Meschut, Gerson
and Biegler, Max and Jüttner, Sven and Rethmeier, Michael }, year={2024} }'
chicago: Yang, Keke, Georg Seitz, Vincent Schreiber, Gerson Meschut, Max Biegler,
Sven Jüttner, and Michael Rethmeier. Validierung von Methoden zur Vermeidung
von Liquid Metal Embrittlement an realitätsnahen Prinzipbauteilen, 2024.
ieee: K. Yang et al., Validierung von Methoden zur Vermeidung von Liquid
Metal Embrittlement an realitätsnahen Prinzipbauteilen. 2024.
mla: Yang, Keke, et al. Validierung von Methoden zur Vermeidung von Liquid Metal
Embrittlement an realitätsnahen Prinzipbauteilen. 2024.
short: K. Yang, G. Seitz, V. Schreiber, G. Meschut, M. Biegler, S. Jüttner, M. Rethmeier,
Validierung von Methoden zur Vermeidung von Liquid Metal Embrittlement an realitätsnahen
Prinzipbauteilen, 2024.
date_created: 2025-02-24T07:28:45Z
date_updated: 2026-02-23T10:27:07Z
department:
- _id: '157'
language:
- iso: ger
publication_identifier:
isbn:
- 978-3-96780-190-3
publication_status: published
quality_controlled: '1'
status: public
title: Validierung von Methoden zur Vermeidung von Liquid Metal Embrittlement an realitätsnahen
Prinzipbauteilen
type: book
user_id: '65085'
year: '2024'
...
---
_id: '62052'
author:
- first_name: Eileen
full_name: Reckmann, Eileen
id: '101166'
last_name: Reckmann
- first_name: Tobias
full_name: Blomberg, Tobias
id: '78354'
last_name: Blomberg
- first_name: Katrin
full_name: Temmen, Katrin
id: '30086'
last_name: Temmen
citation:
ama: 'Reckmann E, Blomberg T, Temmen K. „Das ist genau das richtige Setting“ ‒ Zusammen
lehren und lernen im MINT-Cluster MINT4.OWL. In: ; 2024.'
apa: Reckmann, E., Blomberg, T., & Temmen, K. (2024). „Das ist genau das
richtige Setting“ ‒ Zusammen lehren und lernen im MINT-Cluster MINT4.OWL.
9. JOTED Technikdidaktik-Symposium, München.
bibtex: '@inproceedings{Reckmann_Blomberg_Temmen_2024, title={„Das ist genau das
richtige Setting“ ‒ Zusammen lehren und lernen im MINT-Cluster MINT4.OWL}, author={Reckmann,
Eileen and Blomberg, Tobias and Temmen, Katrin}, year={2024} }'
chicago: Reckmann, Eileen, Tobias Blomberg, and Katrin Temmen. “„Das ist genau das
richtige Setting“ ‒ Zusammen lehren und lernen im MINT-Cluster MINT4.OWL,” 2024.
ieee: E. Reckmann, T. Blomberg, and K. Temmen, “„Das ist genau das richtige Setting“
‒ Zusammen lehren und lernen im MINT-Cluster MINT4.OWL,” presented at the 9. JOTED
Technikdidaktik-Symposium, München, 2024.
mla: Reckmann, Eileen, et al. „Das ist genau das richtige Setting“ ‒ Zusammen
lehren und lernen im MINT-Cluster MINT4.OWL. 2024.
short: 'E. Reckmann, T. Blomberg, K. Temmen, in: 2024.'
conference:
end_date: 2024-10-11
location: München
name: 9. JOTED Technikdidaktik-Symposium
start_date: 2024-10-10
date_created: 2025-11-03T10:28:07Z
date_updated: 2026-02-26T10:08:10Z
department:
- _id: '300'
language:
- iso: ger
status: public
title: „Das ist genau das richtige Setting“ ‒ Zusammen lehren und lernen im MINT-Cluster
MINT4.OWL
type: conference_abstract
user_id: '101166'
year: '2024'
...
---
_id: '62078'
abstract:
- lang: eng
text: 'Fiber reinforced plastics (FRP) exhibit strongly non-linear deformation behavior.
To capture this in simulations, intricate models with a variety of parameters
are typically used. The identification of values for such parameters is highly
challenging and requires in depth understanding of the model itself. Machine learning
(ML) is a promising approach for alleviating this challenge by directly predicting
parameters based on experimental results. So far, this works mostly for purely
artificial data. In this work, two approaches to generalize to experimental data
are investigated: a sequential approach, leveraging understanding of the constitutive
model and a direct, purely data driven approach. This is exemplary carried out
for a highly non-linear strain rate dependent constitutive model for the shear
behavior of FRP.The sequential model is found to work better on both artificial
and experimental data. It is capable of extracting well suited parameters from
the artificial data under realistic conditions. For the experimental data, the
model performance depends on the composition of the experimental curves, varying
between excellently suiting and reasonable predictions. Taking the expert knowledge
into account for ML-model training led to far better results than the purely data
driven approach. Robustifying the model predictions on experimental data promises
further improvement. '
author:
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Andreas
full_name: Hornig, Andreas
last_name: Hornig
- first_name: Peter
full_name: Winkler, Peter
last_name: Winkler
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: 'Gerritzen J, Hornig A, Winkler P, Gude M. Direct parameter identification
for highly nonlinear strain rate dependent constitutive models using machine learning.
In: ECCM21 - Proceedings of the 21st European Conference on Composite Materials.
Vol 3. European Society for Composite Materials (ESCM); 2024:1252–1259. doi:10.60691/yj56-np80'
apa: Gerritzen, J., Hornig, A., Winkler, P., & Gude, M. (2024). Direct parameter
identification for highly nonlinear strain rate dependent constitutive models
using machine learning. ECCM21 - Proceedings of the 21st European Conference
on Composite Materials, 3, 1252–1259. https://doi.org/10.60691/yj56-np80
bibtex: '@inproceedings{Gerritzen_Hornig_Winkler_Gude_2024, title={Direct parameter
identification for highly nonlinear strain rate dependent constitutive models
using machine learning}, volume={3}, DOI={10.60691/yj56-np80},
booktitle={ECCM21 - Proceedings of the 21st European Conference on Composite Materials},
publisher={European Society for Composite Materials (ESCM)}, author={Gerritzen,
Johannes and Hornig, Andreas and Winkler, Peter and Gude, Maik}, year={2024},
pages={1252–1259} }'
chicago: Gerritzen, Johannes, Andreas Hornig, Peter Winkler, and Maik Gude. “Direct
Parameter Identification for Highly Nonlinear Strain Rate Dependent Constitutive
Models Using Machine Learning.” In ECCM21 - Proceedings of the 21st European
Conference on Composite Materials, 3:1252–1259. European Society for Composite
Materials (ESCM), 2024. https://doi.org/10.60691/yj56-np80.
ieee: 'J. Gerritzen, A. Hornig, P. Winkler, and M. Gude, “Direct parameter identification
for highly nonlinear strain rate dependent constitutive models using machine learning,”
in ECCM21 - Proceedings of the 21st European Conference on Composite Materials,
2024, vol. 3, pp. 1252–1259, doi: 10.60691/yj56-np80.'
mla: Gerritzen, Johannes, et al. “Direct Parameter Identification for Highly Nonlinear
Strain Rate Dependent Constitutive Models Using Machine Learning.” ECCM21 -
Proceedings of the 21st European Conference on Composite Materials, vol. 3,
European Society for Composite Materials (ESCM), 2024, pp. 1252–1259, doi:10.60691/yj56-np80.
short: 'J. Gerritzen, A. Hornig, P. Winkler, M. Gude, in: ECCM21 - Proceedings of
the 21st European Conference on Composite Materials, European Society for Composite
Materials (ESCM), 2024, pp. 1252–1259.'
date_created: 2025-11-04T12:47:06Z
date_updated: 2026-02-27T06:46:21Z
doi: 10.60691/yj56-np80
intvolume: ' 3'
keyword:
- Direct parameter identification
- Machine learning
- Convolutional neural networks
- Strain rate dependency
- Fiber reinforced plastics
- woven composites
- segmentation
- synthetic training data
- x-ray computed tomography
language:
- iso: eng
page: 1252–1259
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '131'
name: TRR 285 - Project Area A
publication: ECCM21 - Proceedings of the 21st European Conference on Composite Materials
publication_identifier:
isbn:
- 978-2-912985-01-9
publisher: European Society for Composite Materials (ESCM)
status: public
title: Direct parameter identification for highly nonlinear strain rate dependent
constitutive models using machine learning
type: conference
user_id: '105344'
volume: 3
year: '2024'
...
---
_id: '51116'
abstract:
- lang: eng
text: 'Self-piercing riveting is an established joining technique for lightweight
materials. To increase the sustainability of the rivet manufacturing process,
the authors of the present paper have developed an approach for shortening the
process chain by omitting the heat treatment and rivet coating. To do this, use
is made of high nitrogen steel as the rivet material. Successful joining with
these rivets has already been proven, and it has also been shown that a competitive
joint strength can be achieved with these rivets. Up until now, no studies have
been conducted of the corrosion behaviour of uncoated rivets in high nitrogen
steel compared to conventional rivets made of heat-treatable steel with a coating
of Almac® or zinc-nickel with topcoat, and the corrosion behaviour of joints manufactured
with these rivets has also not been investigated. Furthermore, the suitability
of rivets in high nitrogen steel for structures undergoing cathodic dip painting
has not been evaluated to date. These are therefore the aims of the research work
presented in this paper. Corrosion behaviour is tested by exposing rivets and
joints to a salt spray atmosphere. Cross-cut tests are conducted in order to classify
the adhesion of cathodic dip paint to the different rivet surfaces and materials.
The results of the experimental test show that the cathodic dip paint has sufficient
adhesion to the uncoated rivets in high nitrogen steel and that these rivets can
therefore be used in the manufacture of car bodies. Due to the stainless properties
of the high nitrogen steel, better corrosion resistance is seen by comparison
to the commonly used coatings of Almac® and zinc-nickel with topcoat. A study
of the corrosion behaviour of the joints shows that the rivet head diameter and
rivet head position, in particular, are decisive for preventing crevice corrosion
under the rivet head and contact corrosion within the joint. '
author:
- first_name: Benedikt
full_name: Uhe, Benedikt
id: '38131'
last_name: Uhe
- first_name: Clara-Maria
full_name: Kuball, Clara-Maria
last_name: Kuball
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Uhe B, Kuball C-M, Merklein M, Meschut G. Corrosion behaviour of self-piercing
riveted joints with uncoated rivets in high nitrogen steel. Production Engineering.
Published online 2024. doi:10.1007/s11740-024-01262-6
apa: Uhe, B., Kuball, C.-M., Merklein, M., & Meschut, G. (2024). Corrosion behaviour
of self-piercing riveted joints with uncoated rivets in high nitrogen steel. Production
Engineering. https://doi.org/10.1007/s11740-024-01262-6
bibtex: '@article{Uhe_Kuball_Merklein_Meschut_2024, title={Corrosion behaviour of
self-piercing riveted joints with uncoated rivets in high nitrogen steel}, DOI={10.1007/s11740-024-01262-6},
journal={Production Engineering}, author={Uhe, Benedikt and Kuball, Clara-Maria
and Merklein, Marion and Meschut, Gerson}, year={2024} }'
chicago: Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut.
“Corrosion Behaviour of Self-Piercing Riveted Joints with Uncoated Rivets in High
Nitrogen Steel.” Production Engineering, 2024. https://doi.org/10.1007/s11740-024-01262-6.
ieee: 'B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Corrosion behaviour of
self-piercing riveted joints with uncoated rivets in high nitrogen steel,” Production
Engineering, 2024, doi: 10.1007/s11740-024-01262-6.'
mla: Uhe, Benedikt, et al. “Corrosion Behaviour of Self-Piercing Riveted Joints
with Uncoated Rivets in High Nitrogen Steel.” Production Engineering, 2024,
doi:10.1007/s11740-024-01262-6.
short: B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, Production Engineering (2024).
date_created: 2024-02-01T15:51:01Z
date_updated: 2026-02-27T10:06:00Z
department:
- _id: '157'
doi: 10.1007/s11740-024-01262-6
language:
- iso: eng
publication: Production Engineering
quality_controlled: '1'
status: public
title: Corrosion behaviour of self-piercing riveted joints with uncoated rivets in
high nitrogen steel
type: journal_article
user_id: '53912'
year: '2024'
...
---
_id: '55638'
abstract:
- lang: eng
text: Abstract. Traditionally, joints are cylindrical and rotationally symmetric.
In the present study, non-rotationally symmetric joints are used for joining steel
and Glass mat-reinforced thermoplastic sheets (GMT). In addition, the study also
analyzes the impact of non-rotational symmetric joint rotation on the load-bearing
capacity. Single lap joint specimens were fabricated using the In-Mold assembly
technique for joining steel sheets with GMT. Tensile shear tests were performed
on different orientations of the joint geometry, and it was observed that changing
the joint orientation influences the load-bearing capacity. The joints are constitutively
modeled using beam elements and the influence of joint rotation on load distribution
is examined through a static simulation study.
author:
- first_name: Deekshith Reddy
full_name: Devulapally, Deekshith Reddy
id: '76837'
last_name: Devulapally
- first_name: Sven
full_name: Martin, Sven
id: '38177'
last_name: Martin
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: 'Devulapally DR, Martin S, Tröster T. Non-rotationally symmetric joints – Mechanisms
and load bearing capacity. In: Materials Research Proceedings. Materials
Research Forum LLC; 2024. doi:10.21741/9781644903131-183'
apa: Devulapally, D. R., Martin, S., & Tröster, T. (2024). Non-rotationally
symmetric joints – Mechanisms and load bearing capacity. Materials Research
Proceedings. https://doi.org/10.21741/9781644903131-183
bibtex: '@inproceedings{Devulapally_Martin_Tröster_2024, title={Non-rotationally
symmetric joints – Mechanisms and load bearing capacity}, DOI={10.21741/9781644903131-183},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Devulapally, Deekshith Reddy and Martin, Sven and Tröster, Thomas},
year={2024} }'
chicago: Devulapally, Deekshith Reddy, Sven Martin, and Thomas Tröster. “Non-Rotationally
Symmetric Joints – Mechanisms and Load Bearing Capacity.” In Materials Research
Proceedings. Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903131-183.
ieee: 'D. R. Devulapally, S. Martin, and T. Tröster, “Non-rotationally symmetric
joints – Mechanisms and load bearing capacity,” 2024, doi: 10.21741/9781644903131-183.'
mla: Devulapally, Deekshith Reddy, et al. “Non-Rotationally Symmetric Joints – Mechanisms
and Load Bearing Capacity.” Materials Research Proceedings, Materials Research
Forum LLC, 2024, doi:10.21741/9781644903131-183.
short: 'D.R. Devulapally, S. Martin, T. Tröster, in: Materials Research Proceedings,
Materials Research Forum LLC, 2024.'
date_created: 2024-08-19T08:29:22Z
date_updated: 2026-02-27T10:50:30Z
department:
- _id: '149'
- _id: '321'
- _id: '9'
doi: 10.21741/9781644903131-183
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Non-rotationally symmetric joints – Mechanisms and load bearing capacity
type: conference
user_id: '76837'
year: '2024'
...
---
_id: '61756'
author:
- first_name: Claus
full_name: Scheidemann, Claus
id: '38259'
last_name: Scheidemann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Scheidemann C, Hemsel T, Sextro W. Characteristic behavior of lead-free and
lead-containing piezo ring ceramics in ultrasonic transducers. In: ; 2024.'
apa: Scheidemann, C., Hemsel, T., & Sextro, W. (2024). Characteristic behavior
of lead-free and lead-containing piezo ring ceramics in ultrasonic transducers.
21nd International Workshop on Piezoelectric Materials and Applications in Actuators
(IWPMA), Hannover, Germany.
bibtex: '@inproceedings{Scheidemann_Hemsel_Sextro_2024, title={Characteristic behavior
of lead-free and lead-containing piezo ring ceramics in ultrasonic transducers},
author={Scheidemann, Claus and Hemsel, Tobias and Sextro, Walter}, year={2024}
}'
chicago: Scheidemann, Claus, Tobias Hemsel, and Walter Sextro. “Characteristic Behavior
of Lead-Free and Lead-Containing Piezo Ring Ceramics in Ultrasonic Transducers,”
2024.
ieee: C. Scheidemann, T. Hemsel, and W. Sextro, “Characteristic behavior of lead-free
and lead-containing piezo ring ceramics in ultrasonic transducers,” presented
at the 21nd International Workshop on Piezoelectric Materials and Applications
in Actuators (IWPMA), Hannover, Germany, 2024.
mla: Scheidemann, Claus, et al. Characteristic Behavior of Lead-Free and Lead-Containing
Piezo Ring Ceramics in Ultrasonic Transducers. 2024.
short: 'C. Scheidemann, T. Hemsel, W. Sextro, in: 2024.'
conference:
end_date: 2024-07-26
location: Hannover, Germany
name: 21nd International Workshop on Piezoelectric Materials and Applications in
Actuators (IWPMA)
start_date: 2024-07-22
date_created: 2025-10-08T14:28:33Z
date_updated: 2026-03-02T11:00:14Z
ddc:
- '620'
department:
- _id: '151'
file:
- access_level: open_access
content_type: application/pdf
creator: hemsel
date_created: 2026-01-30T14:50:06Z
date_updated: 2026-03-02T11:00:13Z
file_id: '63820'
file_name: IWPMA_2024_Scheidemann.pdf
file_size: 1984385
relation: main_file
file_date_updated: 2026-03-02T11:00:13Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
status: public
title: Characteristic behavior of lead-free and lead-containing piezo ring ceramics
in ultrasonic transducers
type: conference
user_id: '210'
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: Lecture Notes in Mechanical Engineering. Springer
International Publishing; 2024. doi:10.1007/978-3-031-58006-2_10'
apa: Rozo Vasquez, J., Kersting, L., Arian, B., Homberg, W., Trächtler, A., &
Walther, F. (2024). Soft Sensor Model of Phase Transformation During Flow Forming
of Metastable Austenitic Steel AISI 304L. In Lecture Notes in Mechanical Engineering.
Springer International Publishing. https://doi.org/10.1007/978-3-031-58006-2_10
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={10.1007/978-3-031-58006-2_10},
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 Lecture Notes in
Mechanical Engineering. Cham: Springer International Publishing, 2024. https://doi.org/10.1007/978-3-031-58006-2_10.'
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 Lecture Notes in Mechanical Engineering,
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.” Lecture Notes in Mechanical
Engineering, Springer International Publishing, 2024, doi:10.1007/978-3-031-58006-2_10.
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'
...
---
_id: '57189'
abstract:
- lang: eng
text: "This paper deals with micromagnetic measurements for online detection of\r\nstrain-induced
α’-martensite during plastic deformation of metastable\r\naustenitic steel AISI
304L. The operating principles of the sensors are\r\nBarkhausen noise (MBN) and
eddy currents (EC), which are suitable for\r\ndetection of microstructure evolution
due to formation of ferromagnetic\r\nphases. Nevertheless, the description of
the calibration and\r\ntransformation models of the micromagnetic measurements
into\r\nquantitative α’-martensite fractions is beyond the scope of this paper.\r\nThe
focus will be put on the qualification of different micromagnetic\r\nmethods as
well as of different measurement systems under conditions\r\nsimilar to the real
ones during production, which is crucial for\r\nimplementation of a property-controlled
flow forming process. The\r\ninvestigation was carried out on tubular specimens
produced by flow\r\nforming, which have different content of α’-martensite. To
characterize\r\nthe sensitivity of the sensors, different contact conditions between\r\nsensors
and workpieces were reproduced. MBN sensors are suitable for\r\ndetecting amount
of α’-martensite, but the measurements are affected by\r\nthe surface roughness.
This entails that the calibration models for MBN\r\nsensors must take account
of these effects. EC sensors show a closer\r\nmatch with the amount of α’-martensite
without having major affectation\r\nby other effects."
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 AISI 304L. In: Authorea, Inc.;
2024.'
apa: Rozo Vasquez, J., Kanagarajah, H., Arian, B., Kersting, L., Homberg, W., Trächtler,
A., & Walther, F. (2024). Barkhausen noise- and eddy current-based measurements
for online detection of deformation-induced martensite during flow forming of
metastable austenitic steel AISI 304L.
bibtex: '@inproceedings{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 AISI 304L}, publisher={Authorea, Inc.}, 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 AISI 304L.” Authorea, Inc.,
2024.
ieee: J. Rozo Vasquez et al., “Barkhausen noise- and eddy current-based measurements
for online detection of deformation-induced martensite during flow forming of
metastable austenitic steel AISI 304L,” 2024.
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 AISI 304L. Authorea, Inc., 2024.
short: 'J. Rozo Vasquez, H. Kanagarajah, B. Arian, L. Kersting, W. Homberg, A. Trächtler,
F. Walther, in: Authorea, Inc., 2024.'
date_created: 2024-11-18T10:22:34Z
date_updated: 2024-11-18T10:39:19Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
language:
- iso: eng
publication_status: published
publisher: Authorea, Inc.
quality_controlled: '1'
status: public
title: Barkhausen noise- and eddy current-based measurements for online detection
of deformation-induced martensite during flow forming of metastable austenitic steel
AISI 304L
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57175'
author:
- first_name: Lukas
full_name: Bathelt, Lukas
last_name: Bathelt
- first_name: Eugen
full_name: Djakow, Eugen
id: '7904'
last_name: Djakow
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: Bathelt L, Djakow E, Henke C, Trächtler A. Innovative measurement system for
saber curvature observation in straightening processes. Procedia Computer Science.
2024;232:2018-2027. doi:10.1016/j.procs.2024.02.024
apa: Bathelt, L., Djakow, E., Henke, C., & Trächtler, A. (2024). Innovative
measurement system for saber curvature observation in straightening processes.
Procedia Computer Science, 232, 2018–2027. https://doi.org/10.1016/j.procs.2024.02.024
bibtex: '@article{Bathelt_Djakow_Henke_Trächtler_2024, title={Innovative measurement
system for saber curvature observation in straightening processes}, volume={232},
DOI={10.1016/j.procs.2024.02.024},
journal={Procedia Computer Science}, publisher={Elsevier BV}, author={Bathelt,
Lukas and Djakow, Eugen and Henke, Christian and Trächtler, Ansgar}, year={2024},
pages={2018–2027} }'
chicago: 'Bathelt, Lukas, Eugen Djakow, Christian Henke, and Ansgar Trächtler. “Innovative
Measurement System for Saber Curvature Observation in Straightening Processes.”
Procedia Computer Science 232 (2024): 2018–27. https://doi.org/10.1016/j.procs.2024.02.024.'
ieee: 'L. Bathelt, E. Djakow, C. Henke, and A. Trächtler, “Innovative measurement
system for saber curvature observation in straightening processes,” Procedia
Computer Science, vol. 232, pp. 2018–2027, 2024, doi: 10.1016/j.procs.2024.02.024.'
mla: Bathelt, Lukas, et al. “Innovative Measurement System for Saber Curvature Observation
in Straightening Processes.” Procedia Computer Science, vol. 232, Elsevier
BV, 2024, pp. 2018–27, doi:10.1016/j.procs.2024.02.024.
short: L. Bathelt, E. Djakow, C. Henke, A. Trächtler, Procedia Computer Science
232 (2024) 2018–2027.
date_created: 2024-11-18T10:09:22Z
date_updated: 2024-11-18T10:38:39Z
department:
- _id: '153'
- _id: '241'
doi: 10.1016/j.procs.2024.02.024
intvolume: ' 232'
language:
- iso: eng
page: 2018-2027
publication: Procedia Computer Science
publication_identifier:
issn:
- 1877-0509
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Innovative measurement system for saber curvature observation in straightening
processes
type: journal_article
user_id: '41470'
volume: 232
year: '2024'
...
---
_id: '57185'
author:
- first_name: Fabian
full_name: Reiling, Fabian
last_name: Reiling
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Stefan
full_name: Gröger, Stefan
last_name: Gröger
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Reiling F, Henke C, Hunstig M, Gröger S, Trächtler A. Batch constrained multi-objective
Bayesian optimization using the example of ultrasonic wire bonding. In: 2024
IEEE International Conference on Advanced Intelligent Mechatronics (AIM).
IEEE; 2024. doi:10.1109/aim55361.2024.10637123'
apa: Reiling, F., Henke, C., Hunstig, M., Gröger, S., & Trächtler, A. (2024).
Batch constrained multi-objective Bayesian optimization using the example of ultrasonic
wire bonding. 2024 IEEE International Conference on Advanced Intelligent Mechatronics
(AIM). https://doi.org/10.1109/aim55361.2024.10637123
bibtex: '@inproceedings{Reiling_Henke_Hunstig_Gröger_Trächtler_2024, title={Batch
constrained multi-objective Bayesian optimization using the example of ultrasonic
wire bonding}, DOI={10.1109/aim55361.2024.10637123},
booktitle={2024 IEEE International Conference on Advanced Intelligent Mechatronics
(AIM)}, publisher={IEEE}, author={Reiling, Fabian and Henke, Christian and Hunstig,
Matthias and Gröger, Stefan and Trächtler, Ansgar}, year={2024} }'
chicago: Reiling, Fabian, Christian Henke, Matthias Hunstig, Stefan Gröger, and
Ansgar Trächtler. “Batch Constrained Multi-Objective Bayesian Optimization Using
the Example of Ultrasonic Wire Bonding.” In 2024 IEEE International Conference
on Advanced Intelligent Mechatronics (AIM). IEEE, 2024. https://doi.org/10.1109/aim55361.2024.10637123.
ieee: 'F. Reiling, C. Henke, M. Hunstig, S. Gröger, and A. Trächtler, “Batch constrained
multi-objective Bayesian optimization using the example of ultrasonic wire bonding,”
2024, doi: 10.1109/aim55361.2024.10637123.'
mla: Reiling, Fabian, et al. “Batch Constrained Multi-Objective Bayesian Optimization
Using the Example of Ultrasonic Wire Bonding.” 2024 IEEE International Conference
on Advanced Intelligent Mechatronics (AIM), IEEE, 2024, doi:10.1109/aim55361.2024.10637123.
short: 'F. Reiling, C. Henke, M. Hunstig, S. Gröger, A. Trächtler, in: 2024 IEEE
International Conference on Advanced Intelligent Mechatronics (AIM), IEEE, 2024.'
date_created: 2024-11-18T10:18:18Z
date_updated: 2024-11-18T10:40:23Z
department:
- _id: '153'
- _id: '241'
doi: 10.1109/aim55361.2024.10637123
language:
- iso: eng
publication: 2024 IEEE International Conference on Advanced Intelligent Mechatronics
(AIM)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Batch constrained multi-objective Bayesian optimization using the example of
ultrasonic wire bonding
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57188'
author:
- first_name: Stephan
full_name: Stieren, Stephan
last_name: Stieren
- first_name: Achim
full_name: Werner, Achim
last_name: Werner
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Stieren S, Werner A, Henke C, Trächtler A. A comprehensive test infrastructure
for the evaluation of energy management systems of the household and grid level.
In: 2024 IEEE Conference on Technologies for Sustainability (SusTech).
IEEE; 2024. doi:10.1109/sustech60925.2024.10553455'
apa: Stieren, S., Werner, A., Henke, C., & Trächtler, A. (2024). A comprehensive
test infrastructure for the evaluation of energy management systems of the household
and grid level. 2024 IEEE Conference on Technologies for Sustainability (SusTech).
https://doi.org/10.1109/sustech60925.2024.10553455
bibtex: '@inproceedings{Stieren_Werner_Henke_Trächtler_2024, title={A comprehensive
test infrastructure for the evaluation of energy management systems of the household
and grid level}, DOI={10.1109/sustech60925.2024.10553455},
booktitle={2024 IEEE Conference on Technologies for Sustainability (SusTech)},
publisher={IEEE}, author={Stieren, Stephan and Werner, Achim and Henke, Christian
and Trächtler, Ansgar}, year={2024} }'
chicago: Stieren, Stephan, Achim Werner, Christian Henke, and Ansgar Trächtler.
“A Comprehensive Test Infrastructure for the Evaluation of Energy Management Systems
of the Household and Grid Level.” In 2024 IEEE Conference on Technologies for
Sustainability (SusTech). IEEE, 2024. https://doi.org/10.1109/sustech60925.2024.10553455.
ieee: 'S. Stieren, A. Werner, C. Henke, and A. Trächtler, “A comprehensive test
infrastructure for the evaluation of energy management systems of the household
and grid level,” 2024, doi: 10.1109/sustech60925.2024.10553455.'
mla: Stieren, Stephan, et al. “A Comprehensive Test Infrastructure for the Evaluation
of Energy Management Systems of the Household and Grid Level.” 2024 IEEE Conference
on Technologies for Sustainability (SusTech), IEEE, 2024, doi:10.1109/sustech60925.2024.10553455.
short: 'S. Stieren, A. Werner, C. Henke, A. Trächtler, in: 2024 IEEE Conference
on Technologies for Sustainability (SusTech), IEEE, 2024.'
date_created: 2024-11-18T10:21:54Z
date_updated: 2024-11-18T10:39:28Z
department:
- _id: '153'
- _id: '241'
doi: 10.1109/sustech60925.2024.10553455
language:
- iso: eng
publication: 2024 IEEE Conference on Technologies for Sustainability (SusTech)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: A comprehensive test infrastructure for the evaluation of energy management
systems of the household and grid level
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57187'
author:
- first_name: Stephan
full_name: Stieren, Stephan
last_name: Stieren
- first_name: Luca
full_name: Lenger, Luca
last_name: Lenger
- first_name: Moritz
full_name: Kliem, Moritz
last_name: Kliem
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Stieren S, Lenger L, Kliem M, Henke C, Trächtler A. Development of digital
business models for holistic energy management on device, home and grid level.
In: 2024 IEEE International Systems Conference (SysCon). IEEE; 2024. doi:10.1109/syscon61195.2024.10553440'
apa: Stieren, S., Lenger, L., Kliem, M., Henke, C., & Trächtler, A. (2024).
Development of digital business models for holistic energy management on device,
home and grid level. 2024 IEEE International Systems Conference (SysCon).
https://doi.org/10.1109/syscon61195.2024.10553440
bibtex: '@inproceedings{Stieren_Lenger_Kliem_Henke_Trächtler_2024, title={Development
of digital business models for holistic energy management on device, home and
grid level}, DOI={10.1109/syscon61195.2024.10553440},
booktitle={2024 IEEE International Systems Conference (SysCon)}, publisher={IEEE},
author={Stieren, Stephan and Lenger, Luca and Kliem, Moritz and Henke, Christian
and Trächtler, Ansgar}, year={2024} }'
chicago: Stieren, Stephan, Luca Lenger, Moritz Kliem, Christian Henke, and Ansgar
Trächtler. “Development of Digital Business Models for Holistic Energy Management
on Device, Home and Grid Level.” In 2024 IEEE International Systems Conference
(SysCon). IEEE, 2024. https://doi.org/10.1109/syscon61195.2024.10553440.
ieee: 'S. Stieren, L. Lenger, M. Kliem, C. Henke, and A. Trächtler, “Development
of digital business models for holistic energy management on device, home and
grid level,” 2024, doi: 10.1109/syscon61195.2024.10553440.'
mla: Stieren, Stephan, et al. “Development of Digital Business Models for Holistic
Energy Management on Device, Home and Grid Level.” 2024 IEEE International
Systems Conference (SysCon), IEEE, 2024, doi:10.1109/syscon61195.2024.10553440.
short: 'S. Stieren, L. Lenger, M. Kliem, C. Henke, A. Trächtler, in: 2024 IEEE International
Systems Conference (SysCon), IEEE, 2024.'
date_created: 2024-11-18T10:21:17Z
date_updated: 2024-11-18T10:39:56Z
department:
- _id: '153'
- _id: '241'
doi: 10.1109/syscon61195.2024.10553440
language:
- iso: eng
publication: 2024 IEEE International Systems Conference (SysCon)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Development of digital business models for holistic energy management on device,
home and grid level
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57184'
author:
- first_name: Yi Han
full_name: Poy, Yi Han
last_name: Poy
- first_name: Martin
full_name: Zarnack, Martin
last_name: Zarnack
- first_name: Mark
full_name: Henkenjohann, Mark
last_name: Henkenjohann
- first_name: Udo
full_name: Nolte, Udo
last_name: Nolte
citation:
ama: 'Poy YH, Zarnack M, Henkenjohann M, Nolte U. Aerodynamic Derivatives Identification
of a Fixed-Wing UAV using Flight Data. In: AIAA SCITECH 2024 Forum. American
Institute of Aeronautics and Astronautics; 2024. doi:10.2514/6.2024-0248'
apa: Poy, Y. H., Zarnack, M., Henkenjohann, M., & Nolte, U. (2024). Aerodynamic
Derivatives Identification of a Fixed-Wing UAV using Flight Data. AIAA SCITECH
2024 Forum. https://doi.org/10.2514/6.2024-0248
bibtex: '@inproceedings{Poy_Zarnack_Henkenjohann_Nolte_2024, title={Aerodynamic
Derivatives Identification of a Fixed-Wing UAV using Flight Data}, DOI={10.2514/6.2024-0248},
booktitle={AIAA SCITECH 2024 Forum}, publisher={American Institute of Aeronautics
and Astronautics}, author={Poy, Yi Han and Zarnack, Martin and Henkenjohann, Mark
and Nolte, Udo}, year={2024} }'
chicago: Poy, Yi Han, Martin Zarnack, Mark Henkenjohann, and Udo Nolte. “Aerodynamic
Derivatives Identification of a Fixed-Wing UAV Using Flight Data.” In AIAA
SCITECH 2024 Forum. American Institute of Aeronautics and Astronautics, 2024.
https://doi.org/10.2514/6.2024-0248.
ieee: 'Y. H. Poy, M. Zarnack, M. Henkenjohann, and U. Nolte, “Aerodynamic Derivatives
Identification of a Fixed-Wing UAV using Flight Data,” 2024, doi: 10.2514/6.2024-0248.'
mla: Poy, Yi Han, et al. “Aerodynamic Derivatives Identification of a Fixed-Wing
UAV Using Flight Data.” AIAA SCITECH 2024 Forum, American Institute of
Aeronautics and Astronautics, 2024, doi:10.2514/6.2024-0248.
short: 'Y.H. Poy, M. Zarnack, M. Henkenjohann, U. Nolte, in: AIAA SCITECH 2024 Forum,
American Institute of Aeronautics and Astronautics, 2024.'
date_created: 2024-11-18T10:17:33Z
date_updated: 2024-11-18T10:40:33Z
department:
- _id: '153'
- _id: '241'
doi: 10.2514/6.2024-0248
language:
- iso: eng
publication: AIAA SCITECH 2024 Forum
publication_status: published
publisher: American Institute of Aeronautics and Astronautics
quality_controlled: '1'
status: public
title: Aerodynamic Derivatives Identification of a Fixed-Wing UAV using Flight Data
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57186'
author:
- first_name: Robin
full_name: Schmidt, Robin
last_name: Schmidt
- first_name: Stefan
full_name: Schütz, Stefan
last_name: Schütz
- first_name: Sebastian
full_name: Prinz, Sebastian
last_name: Prinz
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Schmidt R, Schütz S, Prinz S, Henke C, Trächtler A. Optimizing Welding Efficiency:
A First Approach for an Automated Mobile Welding Robot. In: Proceedings of
the 4th IFSA Winter Conference on Automation, Robotics and Communications for
Industry 4.0/5.0 (ARCI 2024). ; 2024.'
apa: 'Schmidt, R., Schütz, S., Prinz, S., Henke, C., & Trächtler, A. (2024).
Optimizing Welding Efficiency: A First Approach for an Automated Mobile Welding
Robot. Proceedings of the 4th IFSA Winter Conference on Automation, Robotics
and Communications for Industry 4.0/5.0 (ARCI 2024).'
bibtex: '@inproceedings{Schmidt_Schütz_Prinz_Henke_Trächtler_2024, title={Optimizing
Welding Efficiency: A First Approach for an Automated Mobile Welding Robot}, booktitle={Proceedings
of the 4th IFSA Winter Conference on Automation, Robotics and Communications for
Industry 4.0/5.0 (ARCI 2024)}, author={Schmidt, Robin and Schütz, Stefan and Prinz,
Sebastian and Henke, Christian and Trächtler, Ansgar}, year={2024} }'
chicago: 'Schmidt, Robin, Stefan Schütz, Sebastian Prinz, Christian Henke, and Ansgar
Trächtler. “Optimizing Welding Efficiency: A First Approach for an Automated Mobile
Welding Robot.” In Proceedings of the 4th IFSA Winter Conference on Automation,
Robotics and Communications for Industry 4.0/5.0 (ARCI 2024), 2024.'
ieee: 'R. Schmidt, S. Schütz, S. Prinz, C. Henke, and A. Trächtler, “Optimizing
Welding Efficiency: A First Approach for an Automated Mobile Welding Robot,” 2024.'
mla: 'Schmidt, Robin, et al. “Optimizing Welding Efficiency: A First Approach for
an Automated Mobile Welding Robot.” Proceedings of the 4th IFSA Winter Conference
on Automation, Robotics and Communications for Industry 4.0/5.0 (ARCI 2024),
2024.'
short: 'R. Schmidt, S. Schütz, S. Prinz, C. Henke, A. Trächtler, in: Proceedings
of the 4th IFSA Winter Conference on Automation, Robotics and Communications for
Industry 4.0/5.0 (ARCI 2024), 2024.'
date_created: 2024-11-18T10:20:58Z
date_updated: 2024-11-18T10:40:13Z
department:
- _id: '153'
- _id: '241'
language:
- iso: eng
publication: Proceedings of the 4th IFSA Winter Conference on Automation, Robotics
and Communications for Industry 4.0/5.0 (ARCI 2024)
quality_controlled: '1'
status: public
title: 'Optimizing Welding Efficiency: A First Approach for an Automated Mobile Welding
Robot'
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57176'
abstract:
- lang: eng
text: Incremental nonlinear dynamic inversion (INDI) is a widely used approach to
controlling UAVs with highly nonlinear dynamics. One key element of INDI-based
controllers is the control allocation realizing pseudo controls using available
actuators. However, the tracking of commanded pseudo controls is not the only
objective considered during control allocation. Since the approach only works
locally due to linearization and the solution is often ambiguous, additional aspects
like control efforts or penalizing the deviation of certain states must be considered.
Conducting the control allocation by solving a quadratic program this results
in a considerable number of weighting parameters, which must be tuned during control
design. Currently, this is conducted manually and is therefore time consuming.
An automated approach for tuning these parameters is therefore highly beneficial.
Thus, this paper presents and evaluates a model-based approach automatically tuning
the control allocation parameters of a tiltrotor VTOL using an optimization algorithm.
This optimization algorithm searches for optimal parameters minimizing a cost
functional that reflects the design target. This cost functional is calculated
based on a test mission for the VTOL which is conducted within a simulation environment.
The test mission represents the common operating range of the VTOL. The simulation
environment consists of an aircraft model as well as a model of the INDI-based
controller which is dependent on the control allocation parameters. On this basis,
model-based optimization is conducted and the optimal parameters are identified.
Finally, successful real-world tests on a 4-degrees-of-freedom testbench using
the identified parameters are presented. Since the control allocation parameters
can significantly influence the aircraft’s stability, the 4-DOF testbench for
the aircraft is required for rapid validation of the parameters at a minimum amount
of risk.
article_number: '187'
author:
- first_name: Mark
full_name: Henkenjohann, Mark
last_name: Henkenjohann
- first_name: Udo
full_name: Nolte, Udo
last_name: Nolte
- first_name: Fabian
full_name: Sion, Fabian
last_name: Sion
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: Henkenjohann M, Nolte U, Sion F, Henke C, Trächtler A. Parameter Tuning Approach
for Incremental Nonlinear Dynamic Inversion-Based Flight Controllers. Actuators.
2024;13(5). doi:10.3390/act13050187
apa: Henkenjohann, M., Nolte, U., Sion, F., Henke, C., & Trächtler, A. (2024).
Parameter Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based Flight
Controllers. Actuators, 13(5), Article 187. https://doi.org/10.3390/act13050187
bibtex: '@article{Henkenjohann_Nolte_Sion_Henke_Trächtler_2024, title={Parameter
Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based Flight Controllers},
volume={13}, DOI={10.3390/act13050187},
number={5187}, journal={Actuators}, publisher={MDPI AG}, author={Henkenjohann,
Mark and Nolte, Udo and Sion, Fabian and Henke, Christian and Trächtler, Ansgar},
year={2024} }'
chicago: Henkenjohann, Mark, Udo Nolte, Fabian Sion, Christian Henke, and Ansgar
Trächtler. “Parameter Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based
Flight Controllers.” Actuators 13, no. 5 (2024). https://doi.org/10.3390/act13050187.
ieee: 'M. Henkenjohann, U. Nolte, F. Sion, C. Henke, and A. Trächtler, “Parameter
Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based Flight Controllers,”
Actuators, vol. 13, no. 5, Art. no. 187, 2024, doi: 10.3390/act13050187.'
mla: Henkenjohann, Mark, et al. “Parameter Tuning Approach for Incremental Nonlinear
Dynamic Inversion-Based Flight Controllers.” Actuators, vol. 13, no. 5,
187, MDPI AG, 2024, doi:10.3390/act13050187.
short: M. Henkenjohann, U. Nolte, F. Sion, C. Henke, A. Trächtler, Actuators 13
(2024).
date_created: 2024-11-18T10:09:58Z
date_updated: 2024-11-18T10:42:19Z
department:
- _id: '153'
- _id: '241'
doi: 10.3390/act13050187
intvolume: ' 13'
issue: '5'
language:
- iso: eng
publication: Actuators
publication_identifier:
issn:
- 2076-0825
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Parameter Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based
Flight Controllers
type: journal_article
user_id: '41470'
volume: 13
year: '2024'
...
---
_id: '57173'
abstract:
- lang: eng
text: Manufacturing processes benefit from property control enabling reproducibility,
application oriented outcomes, and efficient part production. In reverse flow
forming, state of the art practices focus primarily on geometry control, neglecting
property control. Given the intricacies of the process involving the interaction
of tool and machine behavior, process parameters, properties of semi finished
products and temperatures, incorporating process control becomes an imperative
for producing components with predefined properties. The property controlled within
this reverse flow forming process is the local α’ martensite content. Therefore,
process strategies to actively influence the α’ martensite content must be implemented.
In this study seamless AISI 304L steel tubes are used, where α’ martensite formation
is strain and/or temperature induced through phase transformation within the
process. This paper presents innovative process strategies, methods, and specially
developed mechanical and thermal actuator systems to locally increase or suppress
the α’ martensite content. The use and implementation of these approaches and
tools allows the creation of unique optically invisible microstructure profiles
containing 3D gradings, implying a radial grading of α’ martensite. The locally
implemented α’ martensite, forming these 3D gradings, offers potential applications
for functional or sensory purposes. This paper extends beyond theoretical concepts,
providing tangible component outcomes.
author:
- 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: Lukas
full_name: Kersting, Lukas
last_name: Kersting
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
- first_name: Julian
full_name: Rozo Vasquez, Julian
last_name: Rozo Vasquez
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
citation:
ama: 'Arian B, Homberg W, Kersting L, Trächtler A, Rozo Vasquez J, Walther F. α’-martensite
grading techniques in reverse flow forming of AISI 304L. In: Materials Research
Proceedings. Vol 44. Materials Research Forum LLC; 2024. doi:10.21741/9781644903254-76'
apa: Arian, B., Homberg, W., Kersting, L., Trächtler, A., Rozo Vasquez, J., &
Walther, F. (2024). α’-martensite grading techniques in reverse flow forming of
AISI 304L. Materials Research Proceedings, 44. https://doi.org/10.21741/9781644903254-76
bibtex: '@inproceedings{Arian_Homberg_Kersting_Trächtler_Rozo Vasquez_Walther_2024,
title={α’-martensite grading techniques in reverse flow forming of AISI 304L},
volume={44}, DOI={10.21741/9781644903254-76},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Arian, Bahman and Homberg, Werner and Kersting, Lukas and Trächtler,
Ansgar and Rozo Vasquez, Julian and Walther, Frank}, year={2024} }'
chicago: Arian, Bahman, Werner Homberg, Lukas Kersting, Ansgar Trächtler, Julian
Rozo Vasquez, and Frank Walther. “α’-Martensite Grading Techniques in Reverse
Flow Forming of AISI 304L.” In Materials Research Proceedings, Vol. 44.
Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903254-76.
ieee: 'B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, and F.
Walther, “α’-martensite grading techniques in reverse flow forming of AISI 304L,”
in Materials Research Proceedings, 2024, vol. 44, doi: 10.21741/9781644903254-76.'
mla: Arian, Bahman, et al. “α’-Martensite Grading Techniques in Reverse Flow Forming
of AISI 304L.” Materials Research Proceedings, vol. 44, Materials Research
Forum LLC, 2024, doi:10.21741/9781644903254-76.
short: 'B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, F. Walther,
in: Materials Research Proceedings, Materials Research Forum LLC, 2024.'
date_created: 2024-11-18T10:06:17Z
date_updated: 2024-11-18T10:42:55Z
department:
- _id: '241'
- _id: '153'
- _id: '156'
doi: 10.21741/9781644903254-76
intvolume: ' 44'
language:
- iso: eng
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: α’-martensite grading techniques in reverse flow forming of AISI 304L
type: conference
user_id: '41470'
volume: 44
year: '2024'
...
---
_id: '57174'
abstract:
- lang: eng
text: Increasing the sustainability and resource efficiency of forming processes
is one of today's major goals. High-strength wire materials are usually available
as strip material and are subjected to a downstream forming process such as punch-bending
to produce parts for the electronics industry, for example. During the manufacturing
process of the semi-finished product, residual stresses and plastic deformations
are introduced into the wire by rolling and drawing processes. Straightening machines
are used in the production lines to compensate for these. To increase the sustainability
of these production lines, the straightening process is an essential step. Before
the continuous manufacturing process starts, the straightening process must be
set up and the optimal roller positions must be found. Once the process is set
up, the roller position settings are usually not changed. Due to missing measurement
systems for the straightening quality, it is not possible to dynamically adjust
the positions of the straightening rollers to variations in the material properties.
This leads to deviations in the dimensional accuracy of the components to be produced
and thus to an increase in the rejection rate in the manufacturing processes.
To reduce the rejection rate, a novel control system for a continuous feedback
control of a straightening process is presented in this paper. This leads to a
reduction of the rejection rate and unnecessary preforming operations in wire
straightening process. The result is an increasing sustainability and efficiency
of these production process.
author:
- first_name: Lukas
full_name: Bathelt, Lukas
last_name: Bathelt
- first_name: Eugen
full_name: Djakow, Eugen
id: '7904'
last_name: Djakow
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Bathelt L, Djakow E, Henke C, Trächtler A. Innovative control system for straightening
machines using sensor information from downstream processes. In: Materials
Research Proceedings. Vol 41. Materials Research Forum LLC; 2024. doi:10.21741/9781644903131-308'
apa: Bathelt, L., Djakow, E., Henke, C., & Trächtler, A. (2024). Innovative
control system for straightening machines using sensor information from downstream
processes. Materials Research Proceedings, 41. https://doi.org/10.21741/9781644903131-308
bibtex: '@inproceedings{Bathelt_Djakow_Henke_Trächtler_2024, title={Innovative control
system for straightening machines using sensor information from downstream processes},
volume={41}, DOI={10.21741/9781644903131-308},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Bathelt, Lukas and Djakow, Eugen and Henke, Christian and Trächtler,
Ansgar}, year={2024} }'
chicago: Bathelt, Lukas, Eugen Djakow, Christian Henke, and Ansgar Trächtler. “Innovative
Control System for Straightening Machines Using Sensor Information from Downstream
Processes.” In Materials Research Proceedings, Vol. 41. Materials Research
Forum LLC, 2024. https://doi.org/10.21741/9781644903131-308.
ieee: 'L. Bathelt, E. Djakow, C. Henke, and A. Trächtler, “Innovative control system
for straightening machines using sensor information from downstream processes,”
in Materials Research Proceedings, 2024, vol. 41, doi: 10.21741/9781644903131-308.'
mla: Bathelt, Lukas, et al. “Innovative Control System for Straightening Machines
Using Sensor Information from Downstream Processes.” Materials Research Proceedings,
vol. 41, Materials Research Forum LLC, 2024, doi:10.21741/9781644903131-308.
short: 'L. Bathelt, E. Djakow, C. Henke, A. Trächtler, in: Materials Research Proceedings,
Materials Research Forum LLC, 2024.'
date_created: 2024-11-18T10:08:22Z
date_updated: 2024-11-18T10:42:37Z
department:
- _id: '241'
- _id: '153'
doi: 10.21741/9781644903131-308
intvolume: ' 41'
language:
- iso: eng
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Innovative control system for straightening machines using sensor information
from downstream processes
type: conference
user_id: '41470'
volume: 41
year: '2024'
...