---
_id: '64916'
abstract:
- lang: eng
text: The joining of dissimilar materials, such as steel and aluminum, entails significant
challenges during thermal curing processes due to differing coefficients of thermal
expansion. This study addresses the formation of “viscous fingering” instabilities
in structural adhesive joints, which are induced by thermally driven relative
displacements during the liquid phase of the adhesive. Using a component-like
specimen “bridge specimen,” the dependency of this phenomenon on process temperature
and structural stiffness (rivet distance) was characterized. Experimental results
reveal that while the relative displacement scales cubically with the free buckling
length, the resulting adhesive area reduction follows an exponential trend, leading
to a loss of effective bond area of up to 79%, which significantly compromises
the joint strength in automotive applications. To predict these process-induced
defects, a thermo-chemo-viscoelastic-viscoplastic adhesive model implemented in
LS-DYNA was applied. The model combines curing kinetics, viscoelastic relaxation,
and pressure-dependent plasticity and features a geometric damage parameter (D)
that captures the adhesive area reduction caused by viscous fingering as an exponential
function of the accumulated normal strain in the liquid phase. This damage parameter,
calibrated on base-specimen level, was transferred to the component geometry.
The simulation demonstrated high predictive accuracy with a maximum deviation
of the adhesive area reduction of 3.1% compared to experimental data. This validates
the model’s capability to predict manufacturing-induced damage in complex hybrid
structures solely based on thermal boundary conditions.
article_type: original
author:
- first_name: Mohamad
full_name: Al Trjman, Mohamad
id: '65415'
last_name: Al Trjman
- 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: Julia
full_name: Riese, Julia
id: '101499'
last_name: Riese
orcid: 0000-0002-3053-0534
citation:
ama: Al Trjman M, Beule F, Teutenberg D, Meschut G, Riese J. Experimental characterization
and numerical analysis of the influence of the CED coating process on viscous
fingering formation in hybrid-jointed mixed structures. The Journal of Adhesion.
Published online 2026:1-24. doi:10.1080/00218464.2026.2644394
apa: Al Trjman, M., Beule, F., Teutenberg, D., Meschut, G., & Riese, J. (2026).
Experimental characterization and numerical analysis of the influence of the CED
coating process on viscous fingering formation in hybrid-jointed mixed structures.
The Journal of Adhesion, 1–24. https://doi.org/10.1080/00218464.2026.2644394
bibtex: '@article{Al Trjman_Beule_Teutenberg_Meschut_Riese_2026, title={Experimental
characterization and numerical analysis of the influence of the CED coating process
on viscous fingering formation in hybrid-jointed mixed structures}, DOI={10.1080/00218464.2026.2644394},
journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Al
Trjman, Mohamad and Beule, Felix and Teutenberg, Dominik and Meschut, Gerson and
Riese, Julia}, year={2026}, pages={1–24} }'
chicago: Al Trjman, Mohamad, Felix Beule, Dominik Teutenberg, Gerson Meschut, and
Julia Riese. “Experimental Characterization and Numerical Analysis of the Influence
of the CED Coating Process on Viscous Fingering Formation in Hybrid-Jointed Mixed
Structures.” The Journal of Adhesion, 2026, 1–24. https://doi.org/10.1080/00218464.2026.2644394.
ieee: 'M. Al Trjman, F. Beule, D. Teutenberg, G. Meschut, and J. Riese, “Experimental
characterization and numerical analysis of the influence of the CED coating process
on viscous fingering formation in hybrid-jointed mixed structures,” The Journal
of Adhesion, pp. 1–24, 2026, doi: 10.1080/00218464.2026.2644394.'
mla: Al Trjman, Mohamad, et al. “Experimental Characterization and Numerical Analysis
of the Influence of the CED Coating Process on Viscous Fingering Formation in
Hybrid-Jointed Mixed Structures.” The Journal of Adhesion, Informa UK Limited,
2026, pp. 1–24, doi:10.1080/00218464.2026.2644394.
short: M. Al Trjman, F. Beule, D. Teutenberg, G. Meschut, J. Riese, The Journal
of Adhesion (2026) 1–24.
date_created: 2026-03-14T18:43:41Z
date_updated: 2026-03-14T19:04:46Z
ddc:
- '620'
- '670'
- '660'
department:
- _id: '9'
doi: 10.1080/00218464.2026.2644394
file:
- access_level: closed
content_type: application/pdf
creator: mohamada
date_created: 2026-03-14T18:50:31Z
date_updated: 2026-03-14T18:50:31Z
file_id: '64917'
file_name: Experimental characterization and numerical analysis of the influence
of the CED coating process on viscous fingering formation in hybrid-jointed mixe.pdf
file_size: 14668789
relation: main_file
success: 1
file_date_updated: 2026-03-14T18:50:31Z
has_accepted_license: '1'
keyword:
- Adhesive area reduction
- CED coating process
- delta alpha problem
- epoxy structural adhesive
- influence of manufacture
- multi-material design
- numerical simulation (FEM)
- relative displacements
- viscous fingering (saffman-taylor-instability).
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: 1-24
publication: The Journal of Adhesion
publication_identifier:
issn:
- 0021-8464
- 1545-5823
publication_status: published
publisher: Informa UK Limited
status: public
title: Experimental characterization and numerical analysis of the influence of the
CED coating process on viscous fingering formation in hybrid-jointed mixed structures
type: journal_article
user_id: '65415'
year: '2026'
...
---
_id: '58163'
abstract:
- lang: eng
text: Fibre-reinforced polymers are increasingly used due to their high specific
strength, making them suitable for local sheet metal reinforcement. This allows
improved overall mechanical properties with reduced wall thickness of the sheet
metal part and, thus, lower weight of the components. One of the main focuses
of research into such hybrid structures is on the adhesive properties and the
respective failure behaviour of the interfaces. Generally, the failure behaviour
under the influence of mechanical loads can be divided into adhesive, cohesive
and mixed-mode failure. The correlation between observed failure behaviour and
adhesion properties of the hybrid composite materials is analysed in detail in
this work. The hybrid composite consists of an aluminium sheet of the alloy EN
AW‑6082 T6 and thermoset carbon fibre-reinforced plastic (CFRP) prepreg. The aluminium
sheet was laser pretreated before hybrid production to improve the adhesion properties.
The specimens studied were produced by the prepreg pressing process, in which
the components are cured and joined simultaneously. The influences of the thickness
of the CFRP part, the layup, the fibre orientation at the boundary layer, and
the laser pretreatment parameters on the properties of the hybrid joints were
investigated.
article_type: original
author:
- first_name: Shuang
full_name: Wu, Shuang
id: '48039'
last_name: Wu
orcid: 0000-0001-8645-9952
- first_name: Alexander
full_name: Delp, Alexander
last_name: Delp
- first_name: Jonathan
full_name: Freund, Jonathan
last_name: Freund
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
- first_name: Jan
full_name: Haubrich, Jan
last_name: Haubrich
- first_name: Miriam
full_name: Löbbecke, Miriam
last_name: Löbbecke
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: Wu S, Delp A, Freund J, et al. Correlation between interlaminar shear strength
of CFRP and joint strength of aluminium-CFRP hybrid joints. The Journal of
Adhesion. Published online 2025:1-26. doi:10.1080/00218464.2024.2439956
apa: Wu, S., Delp, A., Freund, J., Walther, F., Haubrich, J., Löbbecke, M., &
Tröster, T. (2025). Correlation between interlaminar shear strength of CFRP and
joint strength of aluminium-CFRP hybrid joints. The Journal of Adhesion,
1–26. https://doi.org/10.1080/00218464.2024.2439956
bibtex: '@article{Wu_Delp_Freund_Walther_Haubrich_Löbbecke_Tröster_2025, title={Correlation
between interlaminar shear strength of CFRP and joint strength of aluminium-CFRP
hybrid joints}, DOI={10.1080/00218464.2024.2439956},
journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Wu,
Shuang and Delp, Alexander and Freund, Jonathan and Walther, Frank and Haubrich,
Jan and Löbbecke, Miriam and Tröster, Thomas}, year={2025}, pages={1–26} }'
chicago: Wu, Shuang, Alexander Delp, Jonathan Freund, Frank Walther, Jan Haubrich,
Miriam Löbbecke, and Thomas Tröster. “Correlation between Interlaminar Shear Strength
of CFRP and Joint Strength of Aluminium-CFRP Hybrid Joints.” The Journal of
Adhesion, 2025, 1–26. https://doi.org/10.1080/00218464.2024.2439956.
ieee: 'S. Wu et al., “Correlation between interlaminar shear strength of
CFRP and joint strength of aluminium-CFRP hybrid joints,” The Journal of Adhesion,
pp. 1–26, 2025, doi: 10.1080/00218464.2024.2439956.'
mla: Wu, Shuang, et al. “Correlation between Interlaminar Shear Strength of CFRP
and Joint Strength of Aluminium-CFRP Hybrid Joints.” The Journal of Adhesion,
Informa UK Limited, 2025, pp. 1–26, doi:10.1080/00218464.2024.2439956.
short: S. Wu, A. Delp, J. Freund, F. Walther, J. Haubrich, M. Löbbecke, T. Tröster,
The Journal of Adhesion (2025) 1–26.
date_created: 2025-01-13T08:16:46Z
date_updated: 2026-02-20T12:49:17Z
department:
- _id: '321'
- _id: '149'
- _id: '9'
doi: 10.1080/00218464.2024.2439956
keyword:
- Prepreg pressing process
- hybrid joints
- laser surface pretreatment
- intrinsic manufacturing
- CFRP
- aluminium
- materials engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.tandfonline.com/doi/full/10.1080/00218464.2024.2439956?src=
oa: '1'
page: 1-26
publication: The Journal of Adhesion
publication_identifier:
issn:
- 0021-8464
- 1545-5823
publication_status: published
publisher: Informa UK Limited
quality_controlled: '1'
status: public
title: Correlation between interlaminar shear strength of CFRP and joint strength
of aluminium-CFRP hybrid joints
type: journal_article
user_id: '48039'
year: '2025'
...
---
_id: '62079'
abstract:
- lang: eng
text: This paper investigates two modeling approaches for the simulation of the
deformation and decomposition behavior of preconsolidated rovings above the thermoplastic
matrix{\textquoteright} melting temperature. This is crucial for capturing the
local material structure after processes introducing highly localized deformation
such as mechanical joining processes between metal and fiber reinforced thermoplastics
(FRTP). A generic finite element (FE) model is developed, incorporating interfaces
discretized through either cohesive zone (CZ) elements or Coulomb friction-based
contacts. The material parameters for the FE elements are derived from the initial
stiffness of a statistical volume element (SVE) at micro scale modelled with an
Arbitrary-Lagrange-Eulerian method for three load cases. The CZ properties calculated
are based on the shear viscosity of the composite. The CZ and contact modelling
approaches are evaluated using three load cases of the SVE, comparing force-displacement
curves. Under simple loading conditions, such as normal pressure tension and bending,
both methods produce similar results; however, in complex load cases, the CZ approach
shows clear advantages in handling interface interactions and shows robust simulations.
The CZ approach thus presents a promising method for simulating roving decomposition
in FRTP-metal joining applications above the matrix{\textquoteright} melting temperature.
author:
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- 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: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: 'Gröger B, Gerritzen J, Hornig A, Gude M. Modeling approaches for the decomposition
behavior of preconsolidated rovings throughout local deformation processes. In:
Meschut G, Bobbert M, Duflou J, et al., eds. Sheet Metal 2025. Materials
Research Proceedings. Materials Research Forum LLC, Materials Research Foundations;
2025:268–275. doi:10.21741/9781644903551-33'
apa: Gröger, B., Gerritzen, J., Hornig, A., & Gude, M. (2025). Modeling approaches
for the decomposition behavior of preconsolidated rovings throughout local deformation
processes. In G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. Martins,
M. Merklein, & F. Micari (Eds.), Sheet Metal 2025 (pp. 268–275). Materials
Research Forum LLC, Materials Research Foundations. https://doi.org/10.21741/9781644903551-33
bibtex: '@inproceedings{Gröger_Gerritzen_Hornig_Gude_2025, series={Materials Research
Proceedings}, title={Modeling approaches for the decomposition behavior of preconsolidated
rovings throughout local deformation processes}, DOI={10.21741/9781644903551-33},
booktitle={Sheet Metal 2025}, publisher={Materials Research Forum LLC, Materials
Research Foundations}, author={Gröger, Benjamin and Gerritzen, Johannes and Hornig,
Andreas and Gude, Maik}, editor={Meschut, G. and Bobbert, M. and Duflou, J. and
Fratini, L. and Hagenah, H. and Martins, P. and Merklein, M. and Micari, F.},
year={2025}, pages={268–275}, collection={Materials Research Proceedings} }'
chicago: Gröger, Benjamin, Johannes Gerritzen, Andreas Hornig, and Maik Gude. “Modeling
Approaches for the Decomposition Behavior of Preconsolidated Rovings throughout
Local Deformation Processes.” In Sheet Metal 2025, edited by G. Meschut,
M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. Martins, M. Merklein, and F.
Micari, 268–275. Materials Research Proceedings. Materials Research Forum LLC,
Materials Research Foundations, 2025. https://doi.org/10.21741/9781644903551-33.
ieee: 'B. Gröger, J. Gerritzen, A. Hornig, and M. Gude, “Modeling approaches for
the decomposition behavior of preconsolidated rovings throughout local deformation
processes,” in Sheet Metal 2025, 2025, pp. 268–275, doi: 10.21741/9781644903551-33.'
mla: Gröger, Benjamin, et al. “Modeling Approaches for the Decomposition Behavior
of Preconsolidated Rovings throughout Local Deformation Processes.” Sheet Metal
2025, edited by G. Meschut et al., Materials Research Forum LLC, Materials
Research Foundations, 2025, pp. 268–275, doi:10.21741/9781644903551-33.
short: 'B. Gröger, J. Gerritzen, A. Hornig, M. Gude, in: G. Meschut, M. Bobbert,
J. Duflou, L. Fratini, H. Hagenah, P. Martins, M. Merklein, F. Micari (Eds.),
Sheet Metal 2025, Materials Research Forum LLC, Materials Research Foundations,
2025, pp. 268–275.'
date_created: 2025-11-04T12:48:21Z
date_updated: 2026-02-27T06:43:19Z
doi: 10.21741/9781644903551-33
editor:
- first_name: G.
full_name: Meschut, G.
last_name: Meschut
- first_name: M.
full_name: Bobbert, M.
last_name: Bobbert
- first_name: J.
full_name: Duflou, J.
last_name: Duflou
- first_name: L.
full_name: Fratini, L.
last_name: Fratini
- first_name: H.
full_name: Hagenah, H.
last_name: Hagenah
- first_name: P.
full_name: Martins, P.
last_name: Martins
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
- first_name: F.
full_name: Micari, F.
last_name: Micari
keyword:
- Finite Element Method (FEM)
- Process
- Thermoplastic Fiber Reinforced Plastic
language:
- iso: eng
page: 268–275
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: Sheet Metal 2025
publication_identifier:
isbn:
- 978-1-64490-354-4
publisher: Materials Research Forum LLC, Materials Research Foundations
series_title: Materials Research Proceedings
status: public
title: Modeling approaches for the decomposition behavior of preconsolidated rovings
throughout local deformation processes
type: conference
user_id: '105344'
year: '2025'
...
---
_id: '61149'
abstract:
- lang: eng
text: The use of continuous fiber-reinforced thermoplastics (FRTP) in automotive
industry increases due to their excellent material properties and possibility
of rapid processing. The scale spanning heterogeneity of their material structure
and its influence on the material behavior, however, presents significant challenges
for most joining technologies, such as self-piercing riveting (SPR). During mechanical
joining, the material structure is significantly altered within and around the
joining zone, heavily influencing the material behavior. A comprehensive understanding
of the underlying phenomena of material alteration during the SPR process is essential
as basis for validating numerical simulations. This study examines the material
structure at ten stages of a step-setting test of SPR with two FRTP sheets with
glass-fiber reinforcement. Utilizing X-ray computed tomography (CT), the damage
phenomena within different areas of the setting test are analyzed three-dimensionally
and key parameters are quantified. Dominating phenomena during the penetration
of the rivet into the laminate are fiber failure (FF), interfiber failure (IFF)
and fiber bending, while delamination, fiber kinking and roving splitting are
also observed. At the final stages, the bottom layers of the second sheet collapse
and form a bulge into the cavity of the die.
author:
- first_name: Alrik
full_name: Dargel, Alrik
id: '114764'
last_name: Dargel
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: Malte Christian
full_name: Schlichter, Malte Christian
id: '61977'
last_name: Schlichter
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Daniel
full_name: Köhler, Daniel
id: '83408'
last_name: Köhler
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
- first_name: Robert
full_name: Kupfer, Robert
last_name: Kupfer
citation:
ama: 'Dargel A, Gröger B, Schlichter MC, et al. LOCAL DEFORMATION AND FAILURE OF
COMPOSITES DURING SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION.
In: Gomes JFS, Meguid SA, eds. Proceedings of the 8th International Conference
on Integrity-Reliability-Failure (IRF2025). FEUP; 2025. doi:10.24840/978-972-752-323-8'
apa: 'Dargel, A., Gröger, B., Schlichter, M. C., Gerritzen, J., Köhler, D., Meschut,
G., Gude, M., & Kupfer, R. (2025). LOCAL DEFORMATION AND FAILURE OF COMPOSITES
DURING SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION. In J.
F. S. Gomes & S. A. Meguid (Eds.), Proceedings of the 8th International
Conference on Integrity-Reliability-Failure (IRF2025). FEUP. https://doi.org/10.24840/978-972-752-323-8'
bibtex: '@inproceedings{Dargel_Gröger_Schlichter_Gerritzen_Köhler_Meschut_Gude_Kupfer_2025,
place={Porto}, title={LOCAL DEFORMATION AND FAILURE OF COMPOSITES DURING SELF-PIERCING
RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION}, DOI={10.24840/978-972-752-323-8},
booktitle={Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025)}, publisher={FEUP}, author={Dargel, Alrik and Gröger, Benjamin and Schlichter,
Malte Christian and Gerritzen, Johannes and Köhler, Daniel and Meschut, Gerson
and Gude, Maik and Kupfer, Robert}, editor={Gomes, J.F. Silva and Meguid, Shaker
A.}, year={2025} }'
chicago: 'Dargel, Alrik, Benjamin Gröger, Malte Christian Schlichter, Johannes Gerritzen,
Daniel Köhler, Gerson Meschut, Maik Gude, and Robert Kupfer. “LOCAL DEFORMATION
AND FAILURE OF COMPOSITES DURING SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE
INVESTIGATION.” In Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025), edited by J.F. Silva Gomes and Shaker A. Meguid. Porto: FEUP, 2025.
https://doi.org/10.24840/978-972-752-323-8.'
ieee: 'A. Dargel et al., “LOCAL DEFORMATION AND FAILURE OF COMPOSITES DURING
SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION,” in Proceedings
of the 8th International Conference on Integrity-Reliability-Failure (IRF2025),
Porto, 2025, doi: 10.24840/978-972-752-323-8.'
mla: 'Dargel, Alrik, et al. “LOCAL DEFORMATION AND FAILURE OF COMPOSITES DURING
SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION.” Proceedings
of the 8th International Conference on Integrity-Reliability-Failure (IRF2025),
edited by J.F. Silva Gomes and Shaker A. Meguid, FEUP, 2025, doi:10.24840/978-972-752-323-8.'
short: 'A. Dargel, B. Gröger, M.C. Schlichter, J. Gerritzen, D. Köhler, G. Meschut,
M. Gude, R. Kupfer, in: J.F.S. Gomes, S.A. Meguid (Eds.), Proceedings of the 8th
International Conference on Integrity-Reliability-Failure (IRF2025), FEUP, Porto,
2025.'
conference:
end_date: 2025-07-18
location: Porto
name: 8th International Conference on Integrity-Reliability-Failure (IRF2025)
start_date: 2025-07-15
date_created: 2025-09-08T11:52:45Z
date_updated: 2026-02-27T06:45:17Z
doi: 10.24840/978-972-752-323-8
editor:
- first_name: J.F. Silva
full_name: Gomes, J.F. Silva
last_name: Gomes
- first_name: Shaker A.
full_name: Meguid, Shaker A.
last_name: Meguid
keyword:
- self-piercing riveting
- computed tomography
- thermoplastic composites
- process-structure-interaction
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.researchgate.net/publication/395593556_LOCAL_DEFORMATION_AND_FAILURE_OF_COMPOSITES_DURING_SELF-PIERCING_RIVETING_A_CT_BASED_MICROSTRUCTURE_INVESTIGATION
oa: '1'
place: Porto
project:
- _id: '133'
name: TRR 285 - Project Area C
- _id: '148'
name: TRR 285 - Subproject C04
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '131'
name: TRR 285 - Project Area A
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '135'
name: TRR 285 - Subproject A01
publication: Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025)
publication_identifier:
isbn:
- '9789727523238'
publication_status: published
publisher: FEUP
status: public
title: 'LOCAL DEFORMATION AND FAILURE OF COMPOSITES DURING SELF-PIERCING RIVETING:
A CT BASED MICROSTRUCTURE INVESTIGATION'
type: conference
user_id: '105344'
year: '2025'
...
---
_id: '60958'
abstract:
- lang: eng
text: Large Language Models (LLMs) excel in understanding, generating, and processing
human language, with growing adoption in process mining. Process mining relies
on event logs that capture explicit process knowledge; however, knowledge-intensive
processes (KIPs) in domains such as healthcare and product development depend
on tacit knowledge, which is often absent from event logs. To bridge this gap,
this study proposes a LLM-based framework for mobilizing tacit process knowledge
and enriching event logs. A proof-of-concept is demonstrated using a KIP-specific
LLM-driven conversational agent built on GPT-4o. The results indicate that LLMs
can capture tacit process knowledge through targeted queries and systematically
integrate it into event logs. This study presents a novel approach combining LLMs,
knowledge management, and process mining, advancing the understanding and management
of KIPs by enhancing knowledge accessibility and documentation.
author:
- first_name: Katharina
full_name: Brennig, Katharina
last_name: Brennig
citation:
ama: 'Brennig K. Revealing the Unspoken: Using LLMs to Mobilize and Enrich Tacit
Knowledge in Event Logs of Knowledge-Intensive Processes. In: AMCIS 2025 Proceedings.
11. ; 2025.'
apa: 'Brennig, K. (2025). Revealing the Unspoken: Using LLMs to Mobilize and Enrich
Tacit Knowledge in Event Logs of Knowledge-Intensive Processes. AMCIS 2025
Proceedings. 11. Americas Conference on Information Systems, Montréal.'
bibtex: '@inproceedings{Brennig_2025, title={Revealing the Unspoken: Using LLMs
to Mobilize and Enrich Tacit Knowledge in Event Logs of Knowledge-Intensive Processes},
booktitle={AMCIS 2025 Proceedings. 11.}, author={Brennig, Katharina}, year={2025}
}'
chicago: 'Brennig, Katharina. “Revealing the Unspoken: Using LLMs to Mobilize and
Enrich Tacit Knowledge in Event Logs of Knowledge-Intensive Processes.” In AMCIS
2025 Proceedings. 11., 2025.'
ieee: 'K. Brennig, “Revealing the Unspoken: Using LLMs to Mobilize and Enrich Tacit
Knowledge in Event Logs of Knowledge-Intensive Processes,” presented at the Americas
Conference on Information Systems, Montréal, 2025.'
mla: 'Brennig, Katharina. “Revealing the Unspoken: Using LLMs to Mobilize and Enrich
Tacit Knowledge in Event Logs of Knowledge-Intensive Processes.” AMCIS 2025
Proceedings. 11., 2025.'
short: 'K. Brennig, in: AMCIS 2025 Proceedings. 11., 2025.'
conference:
end_date: 2025-08-16
location: Montréal
name: Americas Conference on Information Systems
start_date: 2025-08-14
date_created: 2025-08-20T07:03:37Z
date_updated: 2025-08-20T07:06:16Z
department:
- _id: '196'
keyword:
- Process Mining
- Large Language Model
- Knowledge Management
- Knowledge-Intensive Process
- Tacit Knowledge
language:
- iso: eng
main_file_link:
- url: https://aisel.aisnet.org/amcis2025/sig_svc/sig_svc/11/
publication: AMCIS 2025 Proceedings. 11.
related_material:
link:
- relation: confirmation
url: https://aisel.aisnet.org/amcis2025/sig_svc/sig_svc/11/
status: public
title: 'Revealing the Unspoken: Using LLMs to Mobilize and Enrich Tacit Knowledge
in Event Logs of Knowledge-Intensive Processes'
type: conference
user_id: '51905'
year: '2025'
...
---
_id: '61339'
author:
- first_name: Marius
full_name: Protte, Marius
id: '44549'
last_name: Protte
- first_name: Behnud Mir
full_name: Djawadi, Behnud Mir
last_name: Djawadi
citation:
ama: 'Protte M, Djawadi BM. Human vs. Algorithmic Auditors: The Impact of Entity
Type and Ambiguity on Human Dishonesty. Frontiers in Behavioral Economics.
2025;4:1645749. doi:10.3389/frbhe.2025.1645749'
apa: 'Protte, M., & Djawadi, B. M. (2025). Human vs. Algorithmic Auditors: The
Impact of Entity Type and Ambiguity on Human Dishonesty. Frontiers in Behavioral
Economics, 4, 1645749. https://doi.org/10.3389/frbhe.2025.1645749'
bibtex: '@article{Protte_Djawadi_2025, title={Human vs. Algorithmic Auditors: The
Impact of Entity Type and Ambiguity on Human Dishonesty}, volume={4}, DOI={10.3389/frbhe.2025.1645749},
journal={Frontiers in Behavioral Economics}, author={Protte, Marius and Djawadi,
Behnud Mir}, year={2025}, pages={1645749} }'
chicago: 'Protte, Marius, and Behnud Mir Djawadi. “Human vs. Algorithmic Auditors:
The Impact of Entity Type and Ambiguity on Human Dishonesty.” Frontiers in
Behavioral Economics 4 (2025): 1645749. https://doi.org/10.3389/frbhe.2025.1645749.'
ieee: 'M. Protte and B. M. Djawadi, “Human vs. Algorithmic Auditors: The Impact
of Entity Type and Ambiguity on Human Dishonesty,” Frontiers in Behavioral
Economics, vol. 4, p. 1645749, 2025, doi: 10.3389/frbhe.2025.1645749.'
mla: 'Protte, Marius, and Behnud Mir Djawadi. “Human vs. Algorithmic Auditors: The
Impact of Entity Type and Ambiguity on Human Dishonesty.” Frontiers in Behavioral
Economics, vol. 4, 2025, p. 1645749, doi:10.3389/frbhe.2025.1645749.'
short: M. Protte, B.M. Djawadi, Frontiers in Behavioral Economics 4 (2025) 1645749.
date_created: 2025-09-18T07:52:40Z
date_updated: 2025-09-29T09:31:38Z
doi: 10.3389/frbhe.2025.1645749
intvolume: ' 4'
keyword:
- cheating
- human-machine interaction
- ambiguity
- verification process
- algorithm aversion
- algorithm appreciation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.frontiersin.org/journals/behavioral-economics/articles/10.3389/frbhe.2025.1645749/full
oa: '1'
page: '1645749'
publication: Frontiers in Behavioral Economics
status: public
title: 'Human vs. Algorithmic Auditors: The Impact of Entity Type and Ambiguity on
Human Dishonesty'
type: journal_article
user_id: '44549'
volume: 4
year: '2025'
...
---
_id: '60837'
abstract:
- lang: eng
text: "In light of growing demands for resource efficiency and sustainability in
vehicle engineering, the environmentally compatible separation of structural adhesive
joints is gaining increasing relevance. This study presents a comparative analysis
of two physically based debonding methods: the established hot-air process and
a cryogenic cold process based on liquid nitrogen (LN2). The primary objective
is to assess the ecological impact and process-related sustainability of both
approaches.\r\nExperimental investigations were conducted on a component-representative
triple-sheet structure that simulates common automotive flange joints. Thermal
input was applied either by convective heating using a hot air gun or by direct
cooling through a contact-based LN2 tool. The resulting temperature profiles were
recorded using spatially distributed thermocouples. Subsequently, the outer panel
was selectively debonded to replicate a repair scenario, and the mechanical integrity
of the remaining adhesive joint was evaluated through Mode I testing of L-shaped
specimens. Process data served as input for an Life Cycle Assessment (LCA) according
to DIN EN ISO 14040.\r\nThe cryogenic method achieved a 40% reduction in carbon
footprint compared to the hot-air process (0.337 kg vs. 0.559 kg CO2-equivalents),
primarily due to its shorter process time and more efficient heat transfer. While
the hot-air method’s impact is mainly driven by electrical energy use, that of
the cold method stems from cryogenic media consumption. Notwithstanding certain
disadvantages in specific impact categories, the LN2-based process exhibits a
superior overall ecological performance and signifies a promising solution for
repair- and recycling-oriented adhesive separation in structural vehicle applications."
article_number: '100332'
article_type: original
author:
- first_name: Alex
full_name: Jordan, Alex
id: '62451'
last_name: Jordan
orcid: 0009-0007-9546-6071
- first_name: Lucas
full_name: Hermelingmeier, Lucas
id: '58649'
last_name: Hermelingmeier
- first_name: Julian
full_name: Gilich, Julian
id: '44391'
last_name: Gilich
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Marco Sebastian
full_name: De Santis, Marco Sebastian
id: '52239'
last_name: De Santis
- first_name: Alexander
full_name: Schlüter, Alexander
id: '103302'
last_name: Schlüter
orcid: 0000-0002-2569-1624
citation:
ama: Jordan A, Hermelingmeier L, Gilich J, Meschut G, De Santis MS, Schlüter A.
Comparison of the economic efficiency and sustainability of two debonding processes
for structurally bonded sills. Journal of Advanced Joining Processes. 2025;12.
doi:10.1016/j.jajp.2025.100332
apa: Jordan, A., Hermelingmeier, L., Gilich, J., Meschut, G., De Santis, M. S.,
& Schlüter, A. (2025). Comparison of the economic efficiency and sustainability
of two debonding processes for structurally bonded sills. Journal of Advanced
Joining Processes, 12, Article 100332. https://doi.org/10.1016/j.jajp.2025.100332
bibtex: '@article{Jordan_Hermelingmeier_Gilich_Meschut_De Santis_Schlüter_2025,
title={Comparison of the economic efficiency and sustainability of two debonding
processes for structurally bonded sills}, volume={12}, DOI={10.1016/j.jajp.2025.100332},
number={100332}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier},
author={Jordan, Alex and Hermelingmeier, Lucas and Gilich, Julian and Meschut,
Gerson and De Santis, Marco Sebastian and Schlüter, Alexander}, year={2025} }'
chicago: Jordan, Alex, Lucas Hermelingmeier, Julian Gilich, Gerson Meschut, Marco
Sebastian De Santis, and Alexander Schlüter. “Comparison of the Economic Efficiency
and Sustainability of Two Debonding Processes for Structurally Bonded Sills.”
Journal of Advanced Joining Processes 12 (2025). https://doi.org/10.1016/j.jajp.2025.100332.
ieee: 'A. Jordan, L. Hermelingmeier, J. Gilich, G. Meschut, M. S. De Santis, and
A. Schlüter, “Comparison of the economic efficiency and sustainability of two
debonding processes for structurally bonded sills,” Journal of Advanced Joining
Processes, vol. 12, Art. no. 100332, 2025, doi: 10.1016/j.jajp.2025.100332.'
mla: Jordan, Alex, et al. “Comparison of the Economic Efficiency and Sustainability
of Two Debonding Processes for Structurally Bonded Sills.” Journal of Advanced
Joining Processes, vol. 12, 100332, Elsevier, 2025, doi:10.1016/j.jajp.2025.100332.
short: A. Jordan, L. Hermelingmeier, J. Gilich, G. Meschut, M.S. De Santis, A. Schlüter,
Journal of Advanced Joining Processes 12 (2025).
date_created: 2025-07-30T11:04:28Z
date_updated: 2026-01-06T08:22:54Z
department:
- _id: '157'
- _id: '876'
- _id: '321'
- _id: '9'
doi: 10.1016/j.jajp.2025.100332
intvolume: ' 12'
keyword:
- Sustainable debonding
- Structural adhesives
- Sustainable joining technologies
- Life Cycle Assessment (LCA)
- Automotive repair process
- Economically efficient debonding
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S2666330925000536?via%3Dihub
oa: '1'
publication: Journal of Advanced Joining Processes
publication_identifier:
issn:
- 2666-3309
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Comparison of the economic efficiency and sustainability of two debonding processes
for structurally bonded sills
type: journal_article
user_id: '103302'
volume: 12
year: '2025'
...
---
_id: '65007'
author:
- first_name: Felix
full_name: Knaup, Felix
id: '45124'
last_name: Knaup
- first_name: Volker
full_name: Schöppner, Volker
id: '20530'
last_name: Schöppner
citation:
ama: Knaup F, Schöppner V. Improvement of a numerical two-phase simulation model
for single-screw plasticizing extruders based on experimental investigations.
International Polymer Processing. Published online 2025. doi:10.1515/ipp-2025-0072
apa: Knaup, F., & Schöppner, V. (2025). Improvement of a numerical two-phase
simulation model for single-screw plasticizing extruders based on experimental
investigations. International Polymer Processing. https://doi.org/10.1515/ipp-2025-0072
bibtex: '@article{Knaup_Schöppner_2025, title={Improvement of a numerical two-phase
simulation model for single-screw plasticizing extruders based on experimental
investigations}, DOI={10.1515/ipp-2025-0072},
journal={International Polymer Processing}, author={Knaup, Felix and Schöppner,
Volker}, year={2025} }'
chicago: Knaup, Felix, and Volker Schöppner. “Improvement of a Numerical Two-Phase
Simulation Model for Single-Screw Plasticizing Extruders Based on Experimental
Investigations.” International Polymer Processing, 2025. https://doi.org/10.1515/ipp-2025-0072.
ieee: 'F. Knaup and V. Schöppner, “Improvement of a numerical two-phase simulation
model for single-screw plasticizing extruders based on experimental investigations,”
International Polymer Processing, 2025, doi: 10.1515/ipp-2025-0072.'
mla: Knaup, Felix, and Volker Schöppner. “Improvement of a Numerical Two-Phase Simulation
Model for Single-Screw Plasticizing Extruders Based on Experimental Investigations.”
International Polymer Processing, 2025, doi:10.1515/ipp-2025-0072.
short: F. Knaup, V. Schöppner, International Polymer Processing (2025).
date_created: 2026-03-16T14:23:34Z
date_updated: 2026-03-18T09:17:45Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
doi: 10.1515/ipp-2025-0072
keyword:
- CFD simulation
- melting modeling
- melting process
- polymer extrusion
- single-screw extruder
language:
- iso: eng
publication: International Polymer Processing
quality_controlled: '1'
status: public
title: Improvement of a numerical two-phase simulation model for single-screw plasticizing
extruders based on experimental investigations
type: journal_article
user_id: '59363'
year: '2025'
...
---
_id: '55159'
abstract:
- lang: eng
text: "We introduce a method based on Gaussian process regression to identify discrete
variational principles from observed solutions of a field theory. The method is
based on the data-based identification of a discrete Lagrangian density. It is
a geometric machine learning technique in the sense that the variational structure
of the true field theory is reflected in the data-driven model by design. We provide
a rigorous convergence statement of the method. The proof circumvents challenges
posed by the ambiguity of discrete Lagrangian densities in the inverse problem
of variational calculus.\r\nMoreover, our method can be used to quantify model
uncertainty in the equations of motions and any linear observable of the discrete
field theory. This is illustrated on the example of the discrete wave equation
and Schrödinger equation.\r\nThe article constitutes an extension of our previous
article arXiv:2404.19626 for the data-driven identification of (discrete) Lagrangians
for variational dynamics from an ode setting to the setting of discrete pdes."
author:
- first_name: Christian
full_name: Offen, Christian
id: '85279'
last_name: Offen
orcid: 0000-0002-5940-8057
citation:
ama: Offen C. Machine learning of discrete field theories with guaranteed convergence
and uncertainty quantification.
apa: Offen, C. (n.d.). Machine learning of discrete field theories with guaranteed
convergence and uncertainty quantification.
bibtex: '@article{Offen, title={Machine learning of discrete field theories with
guaranteed convergence and uncertainty quantification}, author={Offen, Christian}
}'
chicago: Offen, Christian. “Machine Learning of Discrete Field Theories with Guaranteed
Convergence and Uncertainty Quantification,” n.d.
ieee: C. Offen, “Machine learning of discrete field theories with guaranteed convergence
and uncertainty quantification.” .
mla: Offen, Christian. Machine Learning of Discrete Field Theories with Guaranteed
Convergence and Uncertainty Quantification.
short: C. Offen, (n.d.).
date_created: 2024-07-10T13:43:50Z
date_updated: 2024-08-12T13:43:32Z
ddc:
- '510'
department:
- _id: '636'
external_id:
arxiv:
- '2407.07642'
file:
- access_level: open_access
content_type: application/pdf
creator: coffen
date_created: 2024-07-10T13:39:32Z
date_updated: 2024-07-10T13:39:32Z
description: |-
We introduce a method based on Gaussian process regression to identify discrete
variational principles from observed solutions of a field theory. The method is based on the data-based identification of a discrete Lagrangian density. It is a geometric machine learning technique in the sense that the variational structure of the true field theory is reflected in the data-driven model by design.
We provide a rigorous convergence statement of the method.
The proof circumvents challenges posed by the ambiguity of discrete Lagrangian densities in the inverse problem of variational calculus.
Moreover, our method can be used to quantify model uncertainty in the equations of motions and any linear observable of the discrete field theory.
This is illustrated on the example of the discrete wave equation and Schrödinger equation.
The article constitutes an extension of our previous article for the data-driven identification of (discrete) Lagrangians for variational dynamics from an ode setting to the setting of discrete pdes.
file_id: '55160'
file_name: L_Collocation.pdf
file_size: 4569314
relation: main_file
title: Machine learning of discrete field theories with guaranteed convergence and
uncertainty quantification
file_date_updated: 2024-07-10T13:39:32Z
has_accepted_license: '1'
keyword:
- System identification
- inverse problem of variational calculus
- Gaussian process
- Lagrangian learning
- physics informed machine learning
- geometry aware learning
language:
- iso: eng
oa: '1'
page: '28'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication_status: submitted
related_material:
link:
- description: GitHub
relation: software
url: https://github.com/Christian-Offen/Lagrangian_GP_PDE
status: public
title: Machine learning of discrete field theories with guaranteed convergence and
uncertainty quantification
type: preprint
user_id: '85279'
year: '2024'
...
---
_id: '49430'
abstract:
- lang: eng
text: Within the current energy and environmental crisis, new material- and energy-saving
processes are needed. For this reason, this study focuses on the development of
a new forming technology for Ti-6Al-4V sheet metal. It is based on combination
of solution treatment by resistive heating with rapid tool-based quenching and
subsequent annealing. This new “TISTRAQ” process is comparable with press-hardening
already known for steels and hot die quenching known for aluminium alloys. One
of the main influencing factors for this process is the heat transfer coefficient
(HTC). It is an important driver for adjustment of basic parameters, as selection
of tool material or the forming speed but also plays an important role while elaborating
temperature distribution in the numerical model. Therefore, a new and unique test
rig was developed to determine the HTC and to perform tool-based heat treatment
at specimen level under laboratory conditions. The test rig was used to investigate
the influence of the titanium-tool-lubricant system on HTC and cooling rate. Further
the effect of heat treatment in the test rig and tool-based quenching on microstructure
and mechanical properties was studied. To improve the prediction of the temperature
distribution of the titanium during cooling, the HTC was integrated into the numerical
process simulation
author:
- first_name: Maximilian Alexander
full_name: Kaiser, Maximilian Alexander
id: '72351'
last_name: Kaiser
orcid: 0009-0008-1333-3396
- first_name: Fabian
full_name: Höschen, Fabian
last_name: Höschen
- first_name: Nina
full_name: Pfeffer, Nina
last_name: Pfeffer
- first_name: Mathias
full_name: Merten, Mathias
last_name: Merten
- first_name: Thomas
full_name: Meyer, Thomas
last_name: Meyer
- first_name: Thorsten
full_name: Marten, Thorsten
id: '338'
last_name: Marten
orcid: 0009-0001-6433-7839
- first_name: Pawel
full_name: Rockicki, Pawel
last_name: Rockicki
- first_name: Heinz Werner
full_name: Höppel, Heinz Werner
last_name: Höppel
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: 'Kaiser MA, Höschen F, Pfeffer N, et al. The new TISTRAQ process: Solution
treatment with rapid quenching and annealing for Ti-6Al-4V sheet metal part forming
- investigation on heat transfer coefficient and influence on cooling rates. In:
IOM3. Chapter 14: Forming, Machining & Joining [Version 1; Not Peer Reviewed].
; 2024. doi:doi.org/10.7490/f1000research.1119929.1'
apa: 'Kaiser, M. A., Höschen, F., Pfeffer, N., Merten, M., Meyer, T., Marten, T.,
Rockicki, P., Höppel, H. W., & Tröster, T. (2024). The new TISTRAQ process:
Solution treatment with rapid quenching and annealing for Ti-6Al-4V sheet metal
part forming - investigation on heat transfer coefficient and influence on cooling
rates. IOM3. Chapter 14: Forming, Machining & Joining [Version 1; Not Peer
Reviewed]. 15th World Conference on Titanium, Edinburgh. https://doi.org/doi.org/10.7490/f1000research.1119929.1'
bibtex: '@inproceedings{Kaiser_Höschen_Pfeffer_Merten_Meyer_Marten_Rockicki_Höppel_Tröster_2024,
title={The new TISTRAQ process: Solution treatment with rapid quenching and annealing
for Ti-6Al-4V sheet metal part forming - investigation on heat transfer coefficient
and influence on cooling rates}, DOI={doi.org/10.7490/f1000research.1119929.1},
booktitle={IOM3. Chapter 14: Forming, Machining & Joining [version 1; not
peer reviewed]}, author={Kaiser, Maximilian Alexander and Höschen, Fabian and
Pfeffer, Nina and Merten, Mathias and Meyer, Thomas and Marten, Thorsten and Rockicki,
Pawel and Höppel, Heinz Werner and Tröster, Thomas}, year={2024} }'
chicago: 'Kaiser, Maximilian Alexander, Fabian Höschen, Nina Pfeffer, Mathias Merten,
Thomas Meyer, Thorsten Marten, Pawel Rockicki, Heinz Werner Höppel, and Thomas
Tröster. “The New TISTRAQ Process: Solution Treatment with Rapid Quenching and
Annealing for Ti-6Al-4V Sheet Metal Part Forming - Investigation on Heat Transfer
Coefficient and Influence on Cooling Rates.” In IOM3. Chapter 14: Forming,
Machining & Joining [Version 1; Not Peer Reviewed], 2024. https://doi.org/doi.org/10.7490/f1000research.1119929.1.'
ieee: 'M. A. Kaiser et al., “The new TISTRAQ process: Solution treatment
with rapid quenching and annealing for Ti-6Al-4V sheet metal part forming - investigation
on heat transfer coefficient and influence on cooling rates,” presented at the
15th World Conference on Titanium, Edinburgh, 2024, doi: doi.org/10.7490/f1000research.1119929.1.'
mla: 'Kaiser, Maximilian Alexander, et al. “The New TISTRAQ Process: Solution Treatment
with Rapid Quenching and Annealing for Ti-6Al-4V Sheet Metal Part Forming - Investigation
on Heat Transfer Coefficient and Influence on Cooling Rates.” IOM3. Chapter
14: Forming, Machining & Joining [Version 1; Not Peer Reviewed], 2024,
doi:doi.org/10.7490/f1000research.1119929.1.'
short: 'M.A. Kaiser, F. Höschen, N. Pfeffer, M. Merten, T. Meyer, T. Marten, P.
Rockicki, H.W. Höppel, T. Tröster, in: IOM3. Chapter 14: Forming, Machining &
Joining [Version 1; Not Peer Reviewed], 2024.'
conference:
end_date: 2023-06-16
location: Edinburgh
name: 15th World Conference on Titanium
start_date: 2023-06-12
date_created: 2023-12-04T10:00:21Z
date_updated: 2025-05-19T11:46:47Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: doi.org/10.7490/f1000research.1119929.1
keyword:
- Interfacial heat transfer coefficient
- Ti-6Al-4V
- nonisothermal forming
- thermomechanical processing
- TISTRAQ process
language:
- iso: eng
publication: 'IOM3. Chapter 14: Forming, Machining & Joining [version 1; not peer
reviewed]'
publication_status: published
quality_controlled: '1'
status: public
title: 'The new TISTRAQ process: Solution treatment with rapid quenching and annealing
for Ti-6Al-4V sheet metal part forming - investigation on heat transfer coefficient
and influence on cooling rates'
type: conference
user_id: '72351'
year: '2024'
...
---
_id: '49437'
abstract:
- lang: eng
text: "The phase and TTT diagrams of the Ti-6Al-4V system allow the development
of a new forming process for a more energy- and materialefficient production of
sheet metal parts. This new “TISTRAQ” process is composed of two steps. In terms
of process technology, the first step is comparable to a direct press-hardening
process already well known for steels. In this step, the Ti-6Al-4V sheet material
is resistively heated to a temperature below β-transus Tβ and, after a very short
holding time, simultaneously formed and quenched by use of water cooled tools.
Thereby, the β phase undergoes a martensitic transformation. The second step is
a subsequent short-time annealing, which leads to a hardening of the material.
In this work, a new test rig using resistive heating technique was used in order
to produce\r\ndifferent solution treated and tool quenched (STQ) and subsequently
annealed (STA) states. In this paper, the effects of heating rate, solution treatment
temperature and holding time on microstructure and mechanical properties are addressed.
For the characterisation, tensile testing and scanning electron microscopy were
used. By the systematic variation of applied processing parameters, dominating
effects on microstructure and mechanical properties were evaluated. For example,
the solution treatment temperature was found to have a significant effect on microstructural
features and characteristic strength and strain values. The obtained results reveal
a high potential for future technical applications."
author:
- first_name: Nina
full_name: Pfeffer, Nina
last_name: Pfeffer
- first_name: Maximilian Alexander
full_name: Kaiser, Maximilian Alexander
id: '72351'
last_name: Kaiser
orcid: 0009-0008-1333-3396
- first_name: Thomas
full_name: Meyer, Thomas
last_name: Meyer
- first_name: Mathias
full_name: Göken, Mathias
last_name: Göken
- first_name: Heinz Werner
full_name: Höppel, Heinz Werner
last_name: Höppel
citation:
ama: 'Pfeffer N, Kaiser MA, Meyer T, Göken M, Höppel HW. The new TISTRAQ process:
Solution treatment with rapid quenching and annealing for Ti-6Al-4V sheet metal
part forming - the effect of processing parameters on microstructure and mechanical
properties. In: IOM3. Chapter 14: Forming, Machining & Joining [Version
1; Not Peer Reviewed]. doi:https://doi.org/10.7490/f1000research.1119929.1'
apa: 'Pfeffer, N., Kaiser, M. A., Meyer, T., Göken, M., & Höppel, H. W. (n.d.).
The new TISTRAQ process: Solution treatment with rapid quenching and annealing
for Ti-6Al-4V sheet metal part forming - the effect of processing parameters on
microstructure and mechanical properties. IOM3. Chapter 14: Forming, Machining
& Joining [Version 1; Not Peer Reviewed]. 15th World Conference on Titanium,
Edinburgh. https://doi.org/10.7490/f1000research.1119929.1'
bibtex: '@inproceedings{Pfeffer_Kaiser_Meyer_Göken_Höppel, title={The new TISTRAQ
process: Solution treatment with rapid quenching and annealing for Ti-6Al-4V sheet
metal part forming - the effect of processing parameters on microstructure and
mechanical properties}, DOI={https://doi.org/10.7490/f1000research.1119929.1},
booktitle={IOM3. Chapter 14: Forming, Machining & Joining [version 1; not
peer reviewed]}, author={Pfeffer, Nina and Kaiser, Maximilian Alexander and Meyer,
Thomas and Göken, Mathias and Höppel, Heinz Werner} }'
chicago: 'Pfeffer, Nina, Maximilian Alexander Kaiser, Thomas Meyer, Mathias Göken,
and Heinz Werner Höppel. “The New TISTRAQ Process: Solution Treatment with Rapid
Quenching and Annealing for Ti-6Al-4V Sheet Metal Part Forming - the Effect of
Processing Parameters on Microstructure and Mechanical Properties.” In IOM3.
Chapter 14: Forming, Machining & Joining [Version 1; Not Peer Reviewed],
n.d. https://doi.org/10.7490/f1000research.1119929.1.'
ieee: 'N. Pfeffer, M. A. Kaiser, T. Meyer, M. Göken, and H. W. Höppel, “The new
TISTRAQ process: Solution treatment with rapid quenching and annealing for Ti-6Al-4V
sheet metal part forming - the effect of processing parameters on microstructure
and mechanical properties,” presented at the 15th World Conference on Titanium,
Edinburgh, doi: https://doi.org/10.7490/f1000research.1119929.1.'
mla: 'Pfeffer, Nina, et al. “The New TISTRAQ Process: Solution Treatment with Rapid
Quenching and Annealing for Ti-6Al-4V Sheet Metal Part Forming - the Effect of
Processing Parameters on Microstructure and Mechanical Properties.” IOM3. Chapter
14: Forming, Machining & Joining [Version 1; Not Peer Reviewed], doi:https://doi.org/10.7490/f1000research.1119929.1.'
short: 'N. Pfeffer, M.A. Kaiser, T. Meyer, M. Göken, H.W. Höppel, in: IOM3. Chapter
14: Forming, Machining & Joining [Version 1; Not Peer Reviewed], n.d.'
conference:
end_date: 2023-06-16
location: Edinburgh
name: 15th World Conference on Titanium
start_date: 2023-06-12
date_created: 2023-12-04T11:08:49Z
date_updated: 2025-05-19T11:46:28Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: https://doi.org/10.7490/f1000research.1119929.1
keyword:
- Ti-6Al-4V
- thermomechanical processing
- resistive heating
- quench-forming
- process parameter-microstructure-properties relationship
language:
- iso: eng
publication: 'IOM3. Chapter 14: Forming, Machining & Joining [version 1; not peer
reviewed]'
publication_status: submitted
status: public
title: 'The new TISTRAQ process: Solution treatment with rapid quenching and annealing
for Ti-6Al-4V sheet metal part forming - the effect of processing parameters on
microstructure and mechanical properties'
type: conference
user_id: '72351'
year: '2024'
...
---
_id: '55429'
abstract:
- lang: eng
text: A detailed understanding of the cognitive process underlying diagnostic reasoning
in medical experts is currently lacking. While high-level theories like hypothetico-deductive
reasoning were proposed long ago, the inner workings of the step-by-step dynamics
within the mind remain unknown. We present a fully automated approach to elicit,
monitor, and record diagnostic reasoning processes at a fine-grained level. A
web-based user interface enables physicians to carry out a full diagnosis process
on a simulated patient, given as a pre-defined clinical vignette. By collecting
the physician’s information queries and hypothesis revisions, highly detailed
diagnostic reasoning trajectories are captured leading to a diagnosis and its
justification. Four expert epileptologists with a mean experience of 19 years
were recruited to evaluate the system and share their impressions in semi-structured
interviews. We find that the recorded trajectories validate proposed theories
on broader diagnostic reasoning, while also providing valuable additional details
extending previous findings.
author:
- first_name: Dominik
full_name: Battefeld, Dominik
id: '91864'
last_name: Battefeld
orcid: 0000-0002-5480-0594
- first_name: Sigrid
full_name: Mues, Sigrid
last_name: Mues
- first_name: Tim
full_name: Wehner, Tim
last_name: Wehner
- first_name: Patrick
full_name: House, Patrick
last_name: House
- first_name: Christoph
full_name: Kellinghaus, Christoph
last_name: Kellinghaus
- first_name: Jörg
full_name: Wellmer, Jörg
last_name: Wellmer
- first_name: Stefan
full_name: Kopp, Stefan
last_name: Kopp
citation:
ama: 'Battefeld D, Mues S, Wehner T, et al. Revealing the Dynamics of Medical Diagnostic
Reasoning as Step-by-Step Cognitive Process Trajectories. In: Proceedings of
the 46th Annual Conference of the Cognitive Science Society. ; 2024.'
apa: Battefeld, D., Mues, S., Wehner, T., House, P., Kellinghaus, C., Wellmer, J.,
& Kopp, S. (2024). Revealing the Dynamics of Medical Diagnostic Reasoning
as Step-by-Step Cognitive Process Trajectories. Proceedings of the 46th Annual
Conference of the Cognitive Science Society. The Annual Meeting of the Cognitive
Science Society, Rotterdam, NL.
bibtex: '@inproceedings{Battefeld_Mues_Wehner_House_Kellinghaus_Wellmer_Kopp_2024,
title={Revealing the Dynamics of Medical Diagnostic Reasoning as Step-by-Step
Cognitive Process Trajectories}, booktitle={Proceedings of the 46th Annual Conference
of the Cognitive Science Society}, author={Battefeld, Dominik and Mues, Sigrid
and Wehner, Tim and House, Patrick and Kellinghaus, Christoph and Wellmer, Jörg
and Kopp, Stefan}, year={2024} }'
chicago: Battefeld, Dominik, Sigrid Mues, Tim Wehner, Patrick House, Christoph Kellinghaus,
Jörg Wellmer, and Stefan Kopp. “Revealing the Dynamics of Medical Diagnostic Reasoning
as Step-by-Step Cognitive Process Trajectories.” In Proceedings of the 46th
Annual Conference of the Cognitive Science Society, 2024.
ieee: D. Battefeld et al., “Revealing the Dynamics of Medical Diagnostic
Reasoning as Step-by-Step Cognitive Process Trajectories,” presented at the The
Annual Meeting of the Cognitive Science Society, Rotterdam, NL, 2024.
mla: Battefeld, Dominik, et al. “Revealing the Dynamics of Medical Diagnostic Reasoning
as Step-by-Step Cognitive Process Trajectories.” Proceedings of the 46th Annual
Conference of the Cognitive Science Society, 2024.
short: 'D. Battefeld, S. Mues, T. Wehner, P. House, C. Kellinghaus, J. Wellmer,
S. Kopp, in: Proceedings of the 46th Annual Conference of the Cognitive Science
Society, 2024.'
conference:
end_date: 2024-07-27
location: Rotterdam, NL
name: The Annual Meeting of the Cognitive Science Society
start_date: 2024-07-24
date_created: 2024-07-30T08:17:35Z
date_updated: 2025-09-23T15:11:19Z
ddc:
- '000'
department:
- _id: '660'
file:
- access_level: closed
content_type: application/pdf
creator: doba2
date_created: 2024-07-30T08:21:13Z
date_updated: 2024-07-30T08:21:13Z
file_id: '55430'
file_name: Battefeld_2024_Revealing-the-dynamics.pdf
file_size: 486513
relation: main_file
success: 1
file_date_updated: 2024-07-30T08:21:13Z
has_accepted_license: '1'
keyword:
- Differential Diagnosis
- Diagnostic Reasoning
- Reasoning Process Analysis
- Seizure
- Epilepsy
language:
- iso: eng
project:
- _id: '128'
name: 'TRR 318 - C5: TRR 318 - Subproject C5'
publication: Proceedings of the 46th Annual Conference of the Cognitive Science Society
publication_status: published
quality_controlled: '1'
status: public
title: Revealing the Dynamics of Medical Diagnostic Reasoning as Step-by-Step Cognitive
Process Trajectories
type: conference
user_id: '91864'
year: '2024'
...
---
_id: '56089'
abstract:
- lang: eng
text: Additive manufacturing (AM) technologies enable near-net-shape designs
and demand-oriented material usage, which significantly minimizes waste. This
points to a substantial opportunity for further optimization in material savings
and process design. The current study delves into the advancement of sustainable
manufacturing practices in the automotive industry, emphasizing the crucial role
of lightweight construction concepts and AM technologies in enhancing resource
efficiency and reducing greenhouse gas emissions. By exploring the integration
of novel AM techniques such as selective laser melting (SLM) and laser metal deposition
(LMD), the study aims to overcome existing limitations like slow build-up rates
and limited component resolution. The study’s core objective revolves around the
development and validation of a continuous process chain that synergizes different
AM routes. In the current study, the continuous process chain for DMG MORI Lasertec
65 3D’s LMD system and the DMG MORI Lasertec 30 3D’s was demonstrated using 316L
and 1.2709 steel materials. This integrated approach is designed to significantly
curtail process times and minimize component costs, thus suggesting an industry-oriented
process chain for future manufacturing paradigms. Additionally, the research investigates
the production and material behavior of components under varying manufacturing
processes, material combinations, and boundary layer materials. The culmination
of this study is the validation of the proposed process route through a technology
demonstrator, assessing its scalability and setting a benchmark for resource-efficient
manufacturing in the automotive sector.
article_number: '772'
article_type: original
author:
- first_name: Deviprasad
full_name: Chalicheemalapalli Jayasankar, Deviprasad
id: '49504'
last_name: Chalicheemalapalli Jayasankar
orcid: https://orcid.org/ 0000-0002-3446-2444
- first_name: Stefan
full_name: Gnaase, Stefan
id: '25730'
last_name: Gnaase
- first_name: Maximilian Alexander
full_name: Kaiser, Maximilian Alexander
id: '72351'
last_name: Kaiser
orcid: 0009-0008-1333-3396
- first_name: Dennis
full_name: Lehnert, Dennis
id: '90491'
last_name: Lehnert
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: 'Chalicheemalapalli Jayasankar D, Gnaase S, Kaiser MA, Lehnert D, Tröster T.
Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance
Applications. Metals. 2024;14(7). doi:10.3390/met14070772'
apa: 'Chalicheemalapalli Jayasankar, D., Gnaase, S., Kaiser, M. A., Lehnert, D.,
& Tröster, T. (2024). Advancements in Hybrid Additive Manufacturing: Integrating
SLM and LMD for High-Performance Applications. Metals, 14(7), Article
772. https://doi.org/10.3390/met14070772'
bibtex: '@article{Chalicheemalapalli Jayasankar_Gnaase_Kaiser_Lehnert_Tröster_2024,
title={Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD
for High-Performance Applications}, volume={14}, DOI={10.3390/met14070772},
number={7772}, journal={Metals}, publisher={MDPI AG}, author={Chalicheemalapalli
Jayasankar, Deviprasad and Gnaase, Stefan and Kaiser, Maximilian Alexander and
Lehnert, Dennis and Tröster, Thomas}, year={2024} }'
chicago: 'Chalicheemalapalli Jayasankar, Deviprasad, Stefan Gnaase, Maximilian Alexander
Kaiser, Dennis Lehnert, and Thomas Tröster. “Advancements in Hybrid Additive Manufacturing:
Integrating SLM and LMD for High-Performance Applications.” Metals 14,
no. 7 (2024). https://doi.org/10.3390/met14070772.'
ieee: 'D. Chalicheemalapalli Jayasankar, S. Gnaase, M. A. Kaiser, D. Lehnert, and
T. Tröster, “Advancements in Hybrid Additive Manufacturing: Integrating SLM and
LMD for High-Performance Applications,” Metals, vol. 14, no. 7, Art. no.
772, 2024, doi: 10.3390/met14070772.'
mla: 'Chalicheemalapalli Jayasankar, Deviprasad, et al. “Advancements in Hybrid
Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications.”
Metals, vol. 14, no. 7, 772, MDPI AG, 2024, doi:10.3390/met14070772.'
short: D. Chalicheemalapalli Jayasankar, S. Gnaase, M.A. Kaiser, D. Lehnert, T.
Tröster, Metals 14 (2024).
date_created: 2024-09-10T10:19:32Z
date_updated: 2026-03-20T08:44:23Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.3390/met14070772
intvolume: ' 14'
issue: '7'
keyword:
- additive manufacturing (AM)
- selective laser melting (SLM)
- laser metal deposition (LMD)
- hybrid manufacturing
- process optimization
- 316L
- '1.2709'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2075-4701/14/7/772
oa: '1'
publication: Metals
publication_identifier:
issn:
- 2075-4701
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: 'Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for
High-Performance Applications'
type: journal_article
user_id: '49504'
volume: 14
year: '2024'
...
---
_id: '37058'
abstract:
- lang: eng
text: "Digital technologies have made the line of visibility more transparent, enabling
customers to get deeper insights into an organization’s core operations than ever
before. This creates new challenges for organizations trying to consistently deliver
high-quality customer experiences. In this paper we conduct an empirical analysis
of customers’ preferences and their willingness-to-pay for different degrees of
process transparency, using the example of digitally-enabled business-to-customer
delivery services. Applying conjoint analysis, we quantify customers’ preferences
and willingness-to-pay for different service attributes and levels. Our contributions
are two-fold: For research, we provide empirical measurements of customers’ preferences
and their willingness-to-pay for process transparency, suggesting that more is
not always better. Additionally, we provide a blueprint of how conjoint analysis
can be applied to study design decisions regarding changing an organization’s
digital line of visibility. For practice, our findings enable service managers
to make decisions about process transparency and establishing different levels
of service quality.\r\n"
author:
- first_name: Katharina
full_name: Brennig, Katharina
id: '51905'
last_name: Brennig
- first_name: Oliver
full_name: Müller, Oliver
id: '72849'
last_name: Müller
citation:
ama: 'Brennig K, Müller O. More Isn’t Always Better – Measuring Customers’ Preferences
for Digital Process Transparency. In: Hawaii International Conference on System
Sciences. ; 2023.'
apa: Brennig, K., & Müller, O. (2023). More Isn’t Always Better – Measuring
Customers’ Preferences for Digital Process Transparency. Hawaii International
Conference on System Sciences. 56th Hawaii International Conference on System
Sciences, Lāhainā.
bibtex: '@inproceedings{Brennig_Müller_2023, title={More Isn’t Always Better – Measuring
Customers’ Preferences for Digital Process Transparency}, booktitle={Hawaii International
Conference on System Sciences}, author={Brennig, Katharina and Müller, Oliver},
year={2023} }'
chicago: Brennig, Katharina, and Oliver Müller. “More Isn’t Always Better – Measuring
Customers’ Preferences for Digital Process Transparency.” In Hawaii International
Conference on System Sciences, 2023.
ieee: K. Brennig and O. Müller, “More Isn’t Always Better – Measuring Customers’
Preferences for Digital Process Transparency,” presented at the 56th Hawaii International
Conference on System Sciences, Lāhainā, 2023.
mla: Brennig, Katharina, and Oliver Müller. “More Isn’t Always Better – Measuring
Customers’ Preferences for Digital Process Transparency.” Hawaii International
Conference on System Sciences, 2023.
short: 'K. Brennig, O. Müller, in: Hawaii International Conference on System Sciences,
2023.'
conference:
end_date: '20230106'
location: Lāhainā
name: ' 56th Hawaii International Conference on System Sciences'
start_date: '20230103'
date_created: 2023-01-17T11:34:56Z
date_updated: 2024-01-11T11:21:28Z
department:
- _id: '196'
has_accepted_license: '1'
keyword:
- Digital Services
- Line of Visibility
- Process Transparency
- Customer Preferences
- Conjoint Analysis
language:
- iso: eng
publication: Hawaii International Conference on System Sciences
publication_identifier:
unknown:
- 978-0-9981331-6-4
publication_status: published
status: public
title: More Isn’t Always Better – Measuring Customers’ Preferences for Digital Process
Transparency
type: conference
user_id: '51905'
year: '2023'
...
---
_id: '42953'
author:
- first_name: Eleonora
full_name: Cara, Eleonora
last_name: Cara
- first_name: Philipp
full_name: Hönicke, Philipp
last_name: Hönicke
- first_name: Yves
full_name: Kayser, Yves
last_name: Kayser
- first_name: Jörg K. N.
full_name: Lindner, Jörg K. N.
id: '20797'
last_name: Lindner
- first_name: Micaela
full_name: Castellino, Micaela
last_name: Castellino
- first_name: Irdi
full_name: Murataj, Irdi
last_name: Murataj
- first_name: Samuele
full_name: Porro, Samuele
last_name: Porro
- first_name: Angelo
full_name: Angelini, Angelo
last_name: Angelini
- first_name: Natascia
full_name: De Leo, Natascia
last_name: De Leo
- first_name: Candido Fabrizio
full_name: Pirri, Candido Fabrizio
last_name: Pirri
- first_name: Burkhard
full_name: Beckhoff, Burkhard
last_name: Beckhoff
- first_name: Luca
full_name: Boarino, Luca
last_name: Boarino
- first_name: Federico
full_name: Ferrarese Lupi, Federico
last_name: Ferrarese Lupi
citation:
ama: 'Cara E, Hönicke P, Kayser Y, et al. Developing Quantitative Nondestructive
Characterization of Nanomaterials: A Case Study on Sequential Infiltration Synthesis
of Block Copolymers. ACS Applied Polymer Materials. 2023;5(3):2079-2087.
doi:10.1021/acsapm.2c02094'
apa: 'Cara, E., Hönicke, P., Kayser, Y., Lindner, J. K. N., Castellino, M., Murataj,
I., Porro, S., Angelini, A., De Leo, N., Pirri, C. F., Beckhoff, B., Boarino,
L., & Ferrarese Lupi, F. (2023). Developing Quantitative Nondestructive Characterization
of Nanomaterials: A Case Study on Sequential Infiltration Synthesis of Block Copolymers.
ACS Applied Polymer Materials, 5(3), 2079–2087. https://doi.org/10.1021/acsapm.2c02094'
bibtex: '@article{Cara_Hönicke_Kayser_Lindner_Castellino_Murataj_Porro_Angelini_De
Leo_Pirri_et al._2023, title={Developing Quantitative Nondestructive Characterization
of Nanomaterials: A Case Study on Sequential Infiltration Synthesis of Block Copolymers},
volume={5}, DOI={10.1021/acsapm.2c02094},
number={3}, journal={ACS Applied Polymer Materials}, publisher={American Chemical
Society (ACS)}, author={Cara, Eleonora and Hönicke, Philipp and Kayser, Yves and
Lindner, Jörg K. N. and Castellino, Micaela and Murataj, Irdi and Porro, Samuele
and Angelini, Angelo and De Leo, Natascia and Pirri, Candido Fabrizio and et al.},
year={2023}, pages={2079–2087} }'
chicago: 'Cara, Eleonora, Philipp Hönicke, Yves Kayser, Jörg K. N. Lindner, Micaela
Castellino, Irdi Murataj, Samuele Porro, et al. “Developing Quantitative Nondestructive
Characterization of Nanomaterials: A Case Study on Sequential Infiltration Synthesis
of Block Copolymers.” ACS Applied Polymer Materials 5, no. 3 (2023): 2079–87.
https://doi.org/10.1021/acsapm.2c02094.'
ieee: 'E. Cara et al., “Developing Quantitative Nondestructive Characterization
of Nanomaterials: A Case Study on Sequential Infiltration Synthesis of Block Copolymers,”
ACS Applied Polymer Materials, vol. 5, no. 3, pp. 2079–2087, 2023, doi:
10.1021/acsapm.2c02094.'
mla: 'Cara, Eleonora, et al. “Developing Quantitative Nondestructive Characterization
of Nanomaterials: A Case Study on Sequential Infiltration Synthesis of Block Copolymers.”
ACS Applied Polymer Materials, vol. 5, no. 3, American Chemical Society
(ACS), 2023, pp. 2079–87, doi:10.1021/acsapm.2c02094.'
short: E. Cara, P. Hönicke, Y. Kayser, J.K.N. Lindner, M. Castellino, I. Murataj,
S. Porro, A. Angelini, N. De Leo, C.F. Pirri, B. Beckhoff, L. Boarino, F. Ferrarese
Lupi, ACS Applied Polymer Materials 5 (2023) 2079–2087.
date_created: 2023-03-13T12:37:25Z
date_updated: 2023-03-13T12:39:28Z
department:
- _id: '15'
doi: 10.1021/acsapm.2c02094
intvolume: ' 5'
issue: '3'
keyword:
- Organic Chemistry
- Polymers and Plastics
- Process Chemistry and Technology
language:
- iso: eng
page: 2079-2087
publication: ACS Applied Polymer Materials
publication_identifier:
issn:
- 2637-6105
- 2637-6105
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: 'Developing Quantitative Nondestructive Characterization of Nanomaterials:
A Case Study on Sequential Infiltration Synthesis of Block Copolymers'
type: journal_article
user_id: '77496'
volume: 5
year: '2023'
...
---
_id: '44154'
abstract:
- lang: eng
text: Abstract. Due to an increasing volume of shipments, there is a significant
need for more delivery vehicles. One approach to reduce the associated increase
in carbon dioxide (CO2) emissions is a new light weight design approach involving
the substitution of conventional materials with glass fiber mat-reinforced thermoplastics
(GMT) based on polypropylene (PP). The application of GMT by compression molding
is a widely used process in the automotive industry. However, application in the
commercial vehicle sector requires much larger dimensions, making it necessary
to clarify whether the manufacturing process and material are suitable for semi-structural
applications on this scale. To find this out, two replacement geometries are abstracted
in this study and manufactured by varying the main manufacturing parameters. The
feasibility can be demonstrated by recording and analyzing the resulting process
variables and measuring the formed fiber distribution. At the end of the paper,
recommendations are given for the production of GMT structures on the scale of
commercial vehicles.
author:
- first_name: Julian
full_name: Lückenkötter, Julian
id: '45543'
last_name: Lückenkötter
- first_name: J.P.
full_name: Leimbach, J.P.
last_name: Leimbach
- first_name: Tim
full_name: Stallmeister, Tim
id: '45538'
last_name: Stallmeister
- first_name: Thorsten
full_name: Marten, Thorsten
id: '338'
last_name: Marten
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: 'Lückenkötter J, Leimbach JP, Stallmeister T, Marten T, Tröster T. Feasibility
Study of Compression Molding for Large Reinforcement Structures in the Commercial
Vehicle Sector. In: Materials Research Proceedings. Vol 28. Materials Research
Forum LLC; 2023:249-258. doi:10.21741/9781644902479-27'
apa: Lückenkötter, J., Leimbach, J. P., Stallmeister, T., Marten, T., & Tröster,
T. (2023). Feasibility Study of Compression Molding for Large Reinforcement Structures
in the Commercial Vehicle Sector. Materials Research Proceedings, 28,
249–258. https://doi.org/10.21741/9781644902479-27
bibtex: '@inproceedings{Lückenkötter_Leimbach_Stallmeister_Marten_Tröster_2023,
title={Feasibility Study of Compression Molding for Large Reinforcement Structures
in the Commercial Vehicle Sector}, volume={28}, DOI={10.21741/9781644902479-27},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Lückenkötter, Julian and Leimbach, J.P. and Stallmeister, Tim and
Marten, Thorsten and Tröster, Thomas}, year={2023}, pages={249–258} }'
chicago: Lückenkötter, Julian, J.P. Leimbach, Tim Stallmeister, Thorsten Marten,
and Thomas Tröster. “Feasibility Study of Compression Molding for Large Reinforcement
Structures in the Commercial Vehicle Sector.” In Materials Research Proceedings,
28:249–58. Materials Research Forum LLC, 2023. https://doi.org/10.21741/9781644902479-27.
ieee: 'J. Lückenkötter, J. P. Leimbach, T. Stallmeister, T. Marten, and T. Tröster,
“Feasibility Study of Compression Molding for Large Reinforcement Structures in
the Commercial Vehicle Sector,” in Materials Research Proceedings, Krakow,
Poland, 2023, vol. 28, pp. 249–258, doi: 10.21741/9781644902479-27.'
mla: Lückenkötter, Julian, et al. “Feasibility Study of Compression Molding for
Large Reinforcement Structures in the Commercial Vehicle Sector.” Materials
Research Proceedings, vol. 28, Materials Research Forum LLC, 2023, pp. 249–58,
doi:10.21741/9781644902479-27.
short: 'J. Lückenkötter, J.P. Leimbach, T. Stallmeister, T. Marten, T. Tröster,
in: Materials Research Proceedings, Materials Research Forum LLC, 2023, pp. 249–258.'
conference:
end_date: 2023-04-21
location: Krakow, Poland
name: ESAFORM 2023
start_date: 2023-04-19
date_created: 2023-04-24T14:14:11Z
date_updated: 2023-05-01T09:18:12Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.21741/9781644902479-27
intvolume: ' 28'
keyword:
- Compression Molding
- Fiber Content
- Process Development
- Lightweight Design
language:
- iso: eng
page: 249-258
publication: Materials Research Proceedings
publication_identifier:
eissn:
- 978-1-64490-247-9
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Feasibility Study of Compression Molding for Large Reinforcement Structures
in the Commercial Vehicle Sector
type: conference
user_id: '45543'
volume: 28
year: '2023'
...
---
_id: '43457'
abstract:
- lang: eng
text: The production of hydrogen and the utilization of biomass for sustainable
concepts of energy conversion and storage require gas sensors that discriminate
between hydrogen (H2) and carbon monoxide (CO). Mesoporous copper–ceria (Cu–CeO2)
materials with large specific surface areas and uniform porosity are prepared
by nanocasting, and their textural properties are characterized by N2 physisorption,
powder XRD, scanning electron microscopy, transmission electron microscopy, and
energy-dispersive X-ray spectroscopy. The oxidation states of copper (Cu+, Cu2+)
and cerium (Ce3+, Ce4+) are investigated by XPS. The materials are used as resistive
gas sensors for H2 and CO. The sensors show a stronger response to CO than to
H2 and low cross-sensitivity to humidity. Copper turns out to be a necessary component;
copper-free ceria materials prepared by the same method show only poor sensing
performance. By measuring both gases (CO and H2) simultaneously, it is shown that
this behavior can be utilized for selective sensing of CO in the presence of H2.
author:
- first_name: Dominik
full_name: Baier, Dominik
last_name: Baier
- first_name: Tatiana
full_name: Priamushko, Tatiana
last_name: Priamushko
- first_name: Christian
full_name: Weinberger, Christian
id: '11848'
last_name: Weinberger
- first_name: Freddy
full_name: Kleitz, Freddy
last_name: Kleitz
- first_name: Michael
full_name: Tiemann, Michael
id: '23547'
last_name: Tiemann
orcid: 0000-0003-1711-2722
citation:
ama: Baier D, Priamushko T, Weinberger C, Kleitz F, Tiemann M. Selective Discrimination
between CO and H2 with Copper–Ceria-Resistive Gas Sensors. ACS Sensors.
2023;8(4):1616-1623. doi:10.1021/acssensors.2c02739
apa: Baier, D., Priamushko, T., Weinberger, C., Kleitz, F., & Tiemann, M. (2023).
Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors.
ACS Sensors, 8(4), 1616–1623. https://doi.org/10.1021/acssensors.2c02739
bibtex: '@article{Baier_Priamushko_Weinberger_Kleitz_Tiemann_2023, title={Selective
Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors}, volume={8},
DOI={10.1021/acssensors.2c02739},
number={4}, journal={ACS Sensors}, publisher={American Chemical Society (ACS)},
author={Baier, Dominik and Priamushko, Tatiana and Weinberger, Christian and Kleitz,
Freddy and Tiemann, Michael}, year={2023}, pages={1616–1623} }'
chicago: 'Baier, Dominik, Tatiana Priamushko, Christian Weinberger, Freddy Kleitz,
and Michael Tiemann. “Selective Discrimination between CO and H2 with Copper–Ceria-Resistive
Gas Sensors.” ACS Sensors 8, no. 4 (2023): 1616–23. https://doi.org/10.1021/acssensors.2c02739.'
ieee: 'D. Baier, T. Priamushko, C. Weinberger, F. Kleitz, and M. Tiemann, “Selective
Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors,” ACS
Sensors, vol. 8, no. 4, pp. 1616–1623, 2023, doi: 10.1021/acssensors.2c02739.'
mla: Baier, Dominik, et al. “Selective Discrimination between CO and H2 with Copper–Ceria-Resistive
Gas Sensors.” ACS Sensors, vol. 8, no. 4, American Chemical Society (ACS),
2023, pp. 1616–23, doi:10.1021/acssensors.2c02739.
short: D. Baier, T. Priamushko, C. Weinberger, F. Kleitz, M. Tiemann, ACS Sensors
8 (2023) 1616–1623.
date_created: 2023-04-12T06:52:34Z
date_updated: 2023-05-01T05:47:53Z
department:
- _id: '35'
- _id: '2'
- _id: '307'
doi: 10.1021/acssensors.2c02739
intvolume: ' 8'
issue: '4'
keyword:
- Fluid Flow and Transfer Processes
- Process Chemistry and Technology
- Instrumentation
- Bioengineering
language:
- iso: eng
page: 1616 - 1623
publication: ACS Sensors
publication_identifier:
issn:
- 2379-3694
- 2379-3694
publication_status: published
publisher: American Chemical Society (ACS)
quality_controlled: '1'
status: public
title: Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas
Sensors
type: journal_article
user_id: '23547'
volume: 8
year: '2023'
...
---
_id: '34223'
abstract:
- lang: eng
text: In this study, quasi-unidirectional continuous fiber reinforced thermoplastics
(CFRTs) are joined with metal sheets via cold formed cylindrical, elliptical and
polygonal pin structures which are directly pressed into the CFRT component after
local infrared heating. In comparison to already available studies, the unique
novelty is the use of non-rotational symmetric pin structures for the CFRT/metal
hybrid joining. Thus, a variation in the fiber orientation in the CFRT component
as well as a variation in the non-rotational symmetric pins’ orientation in relation
to the sample orientation is conducted. The created samples are consequently mechanically
tested via single lap shear experiments in a quasi-static state. Finally, the
failure behavior of the single lap shear samples is investigated with the help
of microscopic images and detailed photographs. In the single lap shear tests,
it could be shown that non-rotational symmetric pin structures lead to an increase
in maximum testing forces of up to 74% when compared to cylindrical pins. However,
when normalized to the pin foot print related joint strength, only one polygonal
pin variation showed increased joint strength in comparison to cylindrical pin
structures. The investigation of the failure behavior showed two distinct failure
modes. The first failure mode was failure of the CFRT component due to an exceedance
of the maximum bearing strength of the pin-hole leading to significant damage
in the CFRT component. The second failure mode was pin-deflection due to the applied
testing load and a subsequent pin extraction from the CFRT component resulting
in significantly less visible damage in the CFRT component. Generally, CFRT failure
is more likely with a fiber orientation of 0° in relation to the load direction
while pin extraction typically occurs with a fiber orientation of 90°. It is assumed
that for future investigations, pin structures with an undercutting shape that
creates an interlocking joint could counteract the tendency for pin-extraction
and consequently lead to increased maximum joint strengths.
article_number: '4962'
author:
- first_name: Julian
full_name: Popp, Julian
last_name: Popp
- first_name: David
full_name: Römisch, David
last_name: Römisch
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Dietmar
full_name: Drummer, Dietmar
last_name: Drummer
citation:
ama: Popp J, Römisch D, Merklein M, Drummer D. Joining of CFRT/Steel Hybrid Parts
via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures. Applied
Sciences. 2022;12(10). doi:10.3390/app12104962
apa: Popp, J., Römisch, D., Merklein, M., & Drummer, D. (2022). Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures.
Applied Sciences, 12(10), Article 4962. https://doi.org/10.3390/app12104962
bibtex: '@article{Popp_Römisch_Merklein_Drummer_2022, title={Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures},
volume={12}, DOI={10.3390/app12104962},
number={104962}, journal={Applied Sciences}, publisher={MDPI AG}, author={Popp,
Julian and Römisch, David and Merklein, Marion and Drummer, Dietmar}, year={2022}
}'
chicago: Popp, Julian, David Römisch, Marion Merklein, and Dietmar Drummer. “Joining
of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric
Pin Structures.” Applied Sciences 12, no. 10 (2022). https://doi.org/10.3390/app12104962.
ieee: 'J. Popp, D. Römisch, M. Merklein, and D. Drummer, “Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures,”
Applied Sciences, vol. 12, no. 10, Art. no. 4962, 2022, doi: 10.3390/app12104962.'
mla: Popp, Julian, et al. “Joining of CFRT/Steel Hybrid Parts via Direct Pressing
of Cold Formed Non-Rotational Symmetric Pin Structures.” Applied Sciences,
vol. 12, no. 10, 4962, MDPI AG, 2022, doi:10.3390/app12104962.
short: J. Popp, D. Römisch, M. Merklein, D. Drummer, Applied Sciences 12 (2022).
date_created: 2022-12-05T21:48:01Z
date_updated: 2022-12-05T21:49:30Z
doi: 10.3390/app12104962
intvolume: ' 12'
issue: '10'
keyword:
- Fluid Flow and Transfer Processes
- Computer Science Applications
- Process Chemistry and Technology
- General Engineering
- Instrumentation
- General Materials Science
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
status: public
title: Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational
Symmetric Pin Structures
type: journal_article
user_id: '7850'
volume: 12
year: '2022'
...
---
_id: '34317'
author:
- first_name: Kader
full_name: Arslan, Kader
id: '20388'
last_name: Arslan
- first_name: Matthias
full_name: Trier, Matthias
id: '72744'
last_name: Trier
citation:
ama: 'Arslan K, Trier M. Towards a Process Model for Social Media Marketing. In:
Proceedings of the 33rd Australasian Conference on Information Systems (ACIS
2022). ; 2022.'
apa: Arslan, K., & Trier, M. (2022). Towards a Process Model for Social Media
Marketing. Proceedings of the 33rd Australasian Conference on Information Systems
(ACIS 2022). ACIS 2022, Melbourne, Australia.
bibtex: '@inproceedings{Arslan_Trier_2022, place={Melbourne, Australia}, title={Towards
a Process Model for Social Media Marketing}, booktitle={Proceedings of the 33rd Australasian
Conference on Information Systems (ACIS 2022)}, author={Arslan, Kader and Trier,
Matthias}, year={2022} }'
chicago: Arslan, Kader, and Matthias Trier. “Towards a Process Model for Social
Media Marketing.” In Proceedings of the 33rd Australasian Conference on Information
Systems (ACIS 2022). Melbourne, Australia, 2022.
ieee: K. Arslan and M. Trier, “Towards a Process Model for Social Media Marketing,”
presented at the ACIS 2022, Melbourne, Australia, 2022.
mla: Arslan, Kader, and Matthias Trier. “Towards a Process Model for Social Media
Marketing.” Proceedings of the 33rd Australasian Conference on Information
Systems (ACIS 2022), 2022.
short: 'K. Arslan, M. Trier, in: Proceedings of the 33rd Australasian Conference
on Information Systems (ACIS 2022), Melbourne, Australia, 2022.'
conference:
location: Melbourne, Australia
name: ACIS 2022
date_created: 2022-12-10T15:32:15Z
date_updated: 2023-12-26T11:06:43Z
department:
- _id: '198'
keyword:
- Social media
- Social media marketing process
- Social media strategy
- Social media management
- Guidelines
language:
- iso: eng
place: Melbourne, Australia
publication: Proceedings of the 33rd Australasian Conference on Information Systems
(ACIS 2022)
publication_status: published
related_material:
link:
- relation: research_paper
url: https://aisel.aisnet.org/acis2022/81/
status: public
title: Towards a Process Model for Social Media Marketing
type: conference
user_id: '20388'
year: '2022'
...
---
_id: '47560'
abstract:
- lang: eng
text: As a part of the worldwide efforts to substantially reduce CO2 emissions,
power-to-fuel technologies offer a promising path to make the transport sector
CO2-free, complementing the electrification of vehicles. This study focused on
the coupling of Fischer–Tropsch synthesis for the production of synthetic diesel
and kerosene with a high-temperature electrolysis unit. For this purpose, a process
model was set up consisting of several modules including a high-temperature co-electrolyzer
and a steam electrolyzer, both of which were based on solid oxide electrolysis
cell technology, Fischer–Tropsch synthesis, a hydrocracker, and a carrier steam
distillation. The integration of the fuel synthesis reduced the electrical energy
demand of the co-electrolysis process by more than 20%. The results from the process
simulations indicated a power-to-fuel efficiency that varied between 46% and 67%,
with a decisive share of the energy consumption of the co-electrolysis process
within the energy balance. Moreover, the utilization of excess heat can substantially
to completely cover the energy demand for CO2 separation. The economic analysis
suggests production costs of 1.85 €/lDE for the base case and the potential to
cut the costs to 0.94 €/lDE in the best case scenario. These results underline
the huge potential of the developed power-to-fuel technology.
article_number: '699'
author:
- first_name: Ralf
full_name: Peters, Ralf
last_name: Peters
- first_name: Nils
full_name: Wegener, Nils
last_name: Wegener
- first_name: Remzi Can
full_name: Samsun, Remzi Can
last_name: Samsun
- first_name: Felix
full_name: Schorn, Felix
last_name: Schorn
- first_name: Julia
full_name: Riese, Julia
id: '101499'
last_name: Riese
orcid: 0000-0002-3053-0534
- first_name: Marcus
full_name: Grünewald, Marcus
last_name: Grünewald
- first_name: Detlef
full_name: Stolten, Detlef
last_name: Stolten
citation:
ama: Peters R, Wegener N, Samsun RC, et al. A Techno-Economic Assessment of Fischer–Tropsch
Fuels Based on Syngas from Co-Electrolysis. Processes. 2022;10(4). doi:10.3390/pr10040699
apa: Peters, R., Wegener, N., Samsun, R. C., Schorn, F., Riese, J., Grünewald, M.,
& Stolten, D. (2022). A Techno-Economic Assessment of Fischer–Tropsch Fuels
Based on Syngas from Co-Electrolysis. Processes, 10(4), Article
699. https://doi.org/10.3390/pr10040699
bibtex: '@article{Peters_Wegener_Samsun_Schorn_Riese_Grünewald_Stolten_2022, title={A
Techno-Economic Assessment of Fischer–Tropsch Fuels Based on Syngas from Co-Electrolysis},
volume={10}, DOI={10.3390/pr10040699},
number={4699}, journal={Processes}, publisher={MDPI AG}, author={Peters, Ralf
and Wegener, Nils and Samsun, Remzi Can and Schorn, Felix and Riese, Julia and
Grünewald, Marcus and Stolten, Detlef}, year={2022} }'
chicago: Peters, Ralf, Nils Wegener, Remzi Can Samsun, Felix Schorn, Julia Riese,
Marcus Grünewald, and Detlef Stolten. “A Techno-Economic Assessment of Fischer–Tropsch
Fuels Based on Syngas from Co-Electrolysis.” Processes 10, no. 4 (2022).
https://doi.org/10.3390/pr10040699.
ieee: 'R. Peters et al., “A Techno-Economic Assessment of Fischer–Tropsch
Fuels Based on Syngas from Co-Electrolysis,” Processes, vol. 10, no. 4,
Art. no. 699, 2022, doi: 10.3390/pr10040699.'
mla: Peters, Ralf, et al. “A Techno-Economic Assessment of Fischer–Tropsch Fuels
Based on Syngas from Co-Electrolysis.” Processes, vol. 10, no. 4, 699,
MDPI AG, 2022, doi:10.3390/pr10040699.
short: R. Peters, N. Wegener, R.C. Samsun, F. Schorn, J. Riese, M. Grünewald, D.
Stolten, Processes 10 (2022).
date_created: 2023-10-04T14:15:16Z
date_updated: 2024-03-08T11:31:00Z
doi: 10.3390/pr10040699
extern: '1'
intvolume: ' 10'
issue: '4'
keyword:
- Process Chemistry and Technology
- Chemical Engineering (miscellaneous)
- Bioengineering
language:
- iso: eng
publication: Processes
publication_identifier:
issn:
- 2227-9717
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: A Techno-Economic Assessment of Fischer–Tropsch Fuels Based on Syngas from
Co-Electrolysis
type: journal_article
user_id: '101499'
volume: 10
year: '2022'
...