---
_id: '63391'
abstract:
- lang: eng
text: "This study addresses the challenge of insufficient weld penetration in the
outer thin low-carbon steel during\r\nresistance spot welding of three-layer dissimilar
stack-ups containing advanced high-strength steels. To overcome\r\nthermal imbalance
constraints, an innovative strategy leveraging plastic shell containment is proposed
to elevate\r\nthe expulsion-free heat input threshold. By applying a combined
preheating and ramping current profile, a coordinated “shell-first, nugget-second”
sequence is achieved. This mechanism creates a solid-state barrier prior to\r\nrapid
fusion, effectively preventing expulsion. Experimental results demonstrate that
while the reference\r\nconstant-current schedule fails to maintain a process window
under a 2 mm initial gap (IG) disturbance, the\r\nproposed strategy significantly
enhances process stability. It increases the maximum expulsion-free heat input
by\r\n24 % (to 6338 J) under normal conditions and by 77 % (to 6482 J) under the
IG condition. Crucially, the\r\nincreased heat input drives nugget growth across
all interfaces, achieving a penetration depth of 0.38 mm (48 %\r\npenetration
ratio) in the low-carbon steel sheet under the gap condition. These findings validate
the strategy’s\r\neffectiveness in ensuring weld quality and robustness, which
is further confirmed by its transferability to a lowerresistivity DX54D cover
sheet."
article_type: original
author:
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Leonhard
full_name: Männer, Leonhard
id: '51255'
last_name: Männer
- first_name: Zhuoqun
full_name: Wang, Zhuoqun
last_name: Wang
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Yannic
full_name: Böhm, Yannic
id: '84119'
last_name: Böhm
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Yang K, Männer L, Wang Z, et al. Process window expansion with transferable
applicability in three-layer dissimilar steel resistance spot welding via expulsion
prevention. Journal of Manufacturing Processes. 2026;157(Special issue
entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.):984-1000.
doi:10.1016/j.jmapro.2025.12.036'
apa: 'Yang, K., Männer, L., Wang, Z., Olfert, V., Böhm, Y., Hein, D., & Meschut,
G. (2026). Process window expansion with transferable applicability in three-layer
dissimilar steel resistance spot welding via expulsion prevention. Journal
of Manufacturing Processes, 157(Special issue entitled: ‘Trends on
spot joining’ published in Journal of Manufacturing Processes.), 984–1000. https://doi.org/10.1016/j.jmapro.2025.12.036'
bibtex: '@article{Yang_Männer_Wang_Olfert_Böhm_Hein_Meschut_2026, title={Process
window expansion with transferable applicability in three-layer dissimilar steel
resistance spot welding via expulsion prevention}, volume={157}, DOI={10.1016/j.jmapro.2025.12.036},
number={Special issue entitled: ‘Trends on spot joining’ published in Journal
of Manufacturing Processes.}, journal={Journal of Manufacturing Processes}, publisher={Elsevier
BV}, author={Yang, Keke and Männer, Leonhard and Wang, Zhuoqun and Olfert, Viktoria
and Böhm, Yannic and Hein, David and Meschut, Gerson}, year={2026}, pages={984–1000}
}'
chicago: 'Yang, Keke, Leonhard Männer, Zhuoqun Wang, Viktoria Olfert, Yannic Böhm,
David Hein, and Gerson Meschut. “Process Window Expansion with Transferable Applicability
in Three-Layer Dissimilar Steel Resistance Spot Welding via Expulsion Prevention.”
Journal of Manufacturing Processes 157, no. Special issue entitled: ‘Trends
on spot joining’ published in Journal of Manufacturing Processes. (2026): 984–1000.
https://doi.org/10.1016/j.jmapro.2025.12.036.'
ieee: 'K. Yang et al., “Process window expansion with transferable applicability
in three-layer dissimilar steel resistance spot welding via expulsion prevention,”
Journal of Manufacturing Processes, vol. 157, no. Special issue entitled:
‘Trends on spot joining’ published in Journal of Manufacturing Processes., pp.
984–1000, 2026, doi: 10.1016/j.jmapro.2025.12.036.'
mla: 'Yang, Keke, et al. “Process Window Expansion with Transferable Applicability
in Three-Layer Dissimilar Steel Resistance Spot Welding via Expulsion Prevention.”
Journal of Manufacturing Processes, vol. 157, no. Special issue entitled:
‘Trends on spot joining’ published in Journal of Manufacturing Processes., Elsevier
BV, 2026, pp. 984–1000, doi:10.1016/j.jmapro.2025.12.036.'
short: K. Yang, L. Männer, Z. Wang, V. Olfert, Y. Böhm, D. Hein, G. Meschut, Journal
of Manufacturing Processes 157 (2026) 984–1000.
date_created: 2025-12-22T08:20:34Z
date_updated: 2025-12-22T08:24:19Z
ddc:
- '620'
department:
- _id: '157'
doi: 10.1016/j.jmapro.2025.12.036
file:
- access_level: closed
content_type: application/pdf
creator: kekeyang
date_created: 2025-12-22T08:21:51Z
date_updated: 2025-12-22T08:21:51Z
file_id: '63392'
file_name: 1-s2.0-S1526612525013568-main.pdf
file_size: 21431773
relation: main_file
success: 1
file_date_updated: 2025-12-22T08:21:51Z
has_accepted_license: '1'
intvolume: ' 157'
issue: 'Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing
Processes.'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1016/j.jmapro.2025.12.036
oa: '1'
page: 984-1000
publication: Journal of Manufacturing Processes
publication_identifier:
issn:
- 1526-6125
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Process window expansion with transferable applicability in three-layer dissimilar
steel resistance spot welding via expulsion prevention
type: journal_article
user_id: '65085'
volume: 157
year: '2026'
...
---
_id: '63418'
abstract:
- lang: eng
text: Manufacturing tolerances have a measurable influence on the structural integrity
of self-piercing riveted (SPR) joints in automotive applications, yet their quantitative
impact on load-bearing behavior remains insufficiently resolved. This study establishes
a validated hierarchical methodology to predict tolerance-dependent failure behavior
of SPR joints, progressing from coupon to sub-component scale through an integrated
experimental–numerical approach. Five critical manufacturing tolerances, including
rivet length (±0.5 mm), rivet head position (±0.3 mm), orthogonality deviation
(2.8° and 5°), lateral offset (up to 1.2 mm), and flange overlap reduction (up
to 7.5 mm), were investigated. Steel–steel joints exhibited a higher sensitivity
to tolerances by a factor of 2–3 compared to steel–aluminum joints. A unified
effective rivet length concept was developed to consolidate the geometric effects
of all tolerances into a single physically meaningful parameter, enabling load-bearing
capacity prediction with R2 > 0.95 across all evaluated loading directions. The
sub-component validation employing T-joint specimens indicates a 2–3 fold amplification
of tolerance effects at critical structural regions, providing experimental evidence
for the hierarchical scaling principle. The methodology was implemented in a tolerance-dependent
CONSTRAINED_SPR3 formulation, providing >99 % computational efficiency improvement
while maintaining a deviation in maximum force prediction within ±7 %. This framework
enables the physically consistent representation of manufacturing variation within
large-scale simulations and establishes a transferable basis for tolerance-resilient
virtual vehicle development.
article_type: original
author:
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Philip
full_name: Rochel, Philip
last_name: Rochel
- first_name: Philipp
full_name: Bähr, Philipp
last_name: Bähr
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Silke
full_name: Sommer, Silke
last_name: Sommer
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Olfert V, Yang K, Rochel P, et al. Predictive modeling of tolerance-dependent
failure behavior of self-pierce riveted joints: From coupon-level tests to sub-component
validation. Journal of Manufacturing Processes. 2026;157(Special issue
entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.):1250-1273.
doi:10.1016/j.jmapro.2025.12.058'
apa: 'Olfert, V., Yang, K., Rochel, P., Bähr, P., Hein, D., Sommer, S., & Meschut,
G. (2026). Predictive modeling of tolerance-dependent failure behavior of self-pierce
riveted joints: From coupon-level tests to sub-component validation. Journal
of Manufacturing Processes, 157(Special issue entitled: ‘Trends on
spot joining’ published in Journal of Manufacturing Processes.), 1250–1273. https://doi.org/10.1016/j.jmapro.2025.12.058'
bibtex: '@article{Olfert_Yang_Rochel_Bähr_Hein_Sommer_Meschut_2026, title={Predictive
modeling of tolerance-dependent failure behavior of self-pierce riveted joints:
From coupon-level tests to sub-component validation}, volume={157}, DOI={10.1016/j.jmapro.2025.12.058},
number={Special issue entitled: ‘Trends on spot joining’ published in Journal
of Manufacturing Processes.}, journal={Journal of Manufacturing Processes}, publisher={Elsevier
BV}, author={Olfert, Viktoria and Yang, Keke and Rochel, Philip and Bähr, Philipp
and Hein, David and Sommer, Silke and Meschut, Gerson}, year={2026}, pages={1250–1273}
}'
chicago: 'Olfert, Viktoria, Keke Yang, Philip Rochel, Philipp Bähr, David Hein,
Silke Sommer, and Gerson Meschut. “Predictive Modeling of Tolerance-Dependent
Failure Behavior of Self-Pierce Riveted Joints: From Coupon-Level Tests to Sub-Component
Validation.” Journal of Manufacturing Processes 157, no. Special issue
entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.
(2026): 1250–73. https://doi.org/10.1016/j.jmapro.2025.12.058.'
ieee: 'V. Olfert et al., “Predictive modeling of tolerance-dependent failure
behavior of self-pierce riveted joints: From coupon-level tests to sub-component
validation,” Journal of Manufacturing Processes, vol. 157, no. Special
issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing
Processes., pp. 1250–1273, 2026, doi: 10.1016/j.jmapro.2025.12.058.'
mla: 'Olfert, Viktoria, et al. “Predictive Modeling of Tolerance-Dependent Failure
Behavior of Self-Pierce Riveted Joints: From Coupon-Level Tests to Sub-Component
Validation.” Journal of Manufacturing Processes, vol. 157, no. Special
issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing
Processes., Elsevier BV, 2026, pp. 1250–73, doi:10.1016/j.jmapro.2025.12.058.'
short: V. Olfert, K. Yang, P. Rochel, P. Bähr, D. Hein, S. Sommer, G. Meschut, Journal
of Manufacturing Processes 157 (2026) 1250–1273.
date_created: 2025-12-26T13:41:43Z
date_updated: 2025-12-26T14:06:38Z
ddc:
- '620'
department:
- _id: '157'
doi: 10.1016/j.jmapro.2025.12.058
file:
- access_level: closed
content_type: application/pdf
creator: kekeyang
date_created: 2025-12-26T13:42:22Z
date_updated: 2025-12-26T13:42:22Z
file_id: '63419'
file_name: 1-s2.0-S1526612525013787-main.pdf
file_size: 28796238
relation: main_file
success: 1
file_date_updated: 2025-12-26T13:42:22Z
has_accepted_license: '1'
intvolume: ' 157'
issue: 'Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing
Processes.'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S1526612525013787?via%3Dihub
oa: '1'
page: 1250-1273
publication: Journal of Manufacturing Processes
publication_identifier:
issn:
- 1526-6125
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: 'Predictive modeling of tolerance-dependent failure behavior of self-pierce
riveted joints: From coupon-level tests to sub-component validation'
type: journal_article
user_id: '65085'
volume: 157
year: '2026'
...
---
_id: '58535'
author:
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Zhuoqun
full_name: Wang, Zhuoqun
last_name: Wang
- first_name: Viktor
full_name: Haak, Viktor
id: '60398'
last_name: Haak
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Bassel
full_name: El-Sari, Bassel
last_name: El-Sari
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Max
full_name: Biegler, Max
last_name: Biegler
- first_name: Michael
full_name: Rethmeier, Michael
last_name: Rethmeier
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Yang K, Wang Z, Haak V, et al. A novel welding schedule for expanding the expulsion-free
process window in resistance spot welding of dissimilar joints with ultra-high
strength steel. Journal of Manufacturing Processes. 2025;137:306-319. doi:10.1016/j.jmapro.2025.02.009
apa: Yang, K., Wang, Z., Haak, V., Olfert, V., El-Sari, B., Hein, D., Biegler, M.,
Rethmeier, M., & Meschut, G. (2025). A novel welding schedule for expanding
the expulsion-free process window in resistance spot welding of dissimilar joints
with ultra-high strength steel. Journal of Manufacturing Processes, 137,
306–319. https://doi.org/10.1016/j.jmapro.2025.02.009
bibtex: '@article{Yang_Wang_Haak_Olfert_El-Sari_Hein_Biegler_Rethmeier_Meschut_2025,
title={A novel welding schedule for expanding the expulsion-free process window
in resistance spot welding of dissimilar joints with ultra-high strength steel},
volume={137}, DOI={10.1016/j.jmapro.2025.02.009},
journal={Journal of Manufacturing Processes}, publisher={Elsevier BV}, author={Yang,
Keke and Wang, Zhuoqun and Haak, Viktor and Olfert, Viktoria and El-Sari, Bassel
and Hein, David and Biegler, Max and Rethmeier, Michael and Meschut, Gerson},
year={2025}, pages={306–319} }'
chicago: 'Yang, Keke, Zhuoqun Wang, Viktor Haak, Viktoria Olfert, Bassel El-Sari,
David Hein, Max Biegler, Michael Rethmeier, and Gerson Meschut. “A Novel Welding
Schedule for Expanding the Expulsion-Free Process Window in Resistance Spot Welding
of Dissimilar Joints with Ultra-High Strength Steel.” Journal of Manufacturing
Processes 137 (2025): 306–19. https://doi.org/10.1016/j.jmapro.2025.02.009.'
ieee: 'K. Yang et al., “A novel welding schedule for expanding the expulsion-free
process window in resistance spot welding of dissimilar joints with ultra-high
strength steel,” Journal of Manufacturing Processes, vol. 137, pp. 306–319,
2025, doi: 10.1016/j.jmapro.2025.02.009.'
mla: Yang, Keke, et al. “A Novel Welding Schedule for Expanding the Expulsion-Free
Process Window in Resistance Spot Welding of Dissimilar Joints with Ultra-High
Strength Steel.” Journal of Manufacturing Processes, vol. 137, Elsevier
BV, 2025, pp. 306–19, doi:10.1016/j.jmapro.2025.02.009.
short: K. Yang, Z. Wang, V. Haak, V. Olfert, B. El-Sari, D. Hein, M. Biegler, M.
Rethmeier, G. Meschut, Journal of Manufacturing Processes 137 (2025) 306–319.
date_created: 2025-02-07T10:08:08Z
date_updated: 2025-02-24T07:30:23Z
ddc:
- '670'
department:
- _id: '157'
doi: 10.1016/j.jmapro.2025.02.009
file:
- access_level: closed
content_type: application/pdf
creator: kekeyang
date_created: 2025-02-07T10:09:17Z
date_updated: 2025-02-07T10:09:17Z
file_id: '58536'
file_name: KYA_VÖ6.pdf
file_size: 3747516
relation: main_file
success: 1
file_date_updated: 2025-02-07T10:09:17Z
has_accepted_license: '1'
intvolume: ' 137'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: 306-319
publication: Journal of Manufacturing Processes
publication_identifier:
issn:
- 1526-6125
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: A novel welding schedule for expanding the expulsion-free process window in
resistance spot welding of dissimilar joints with ultra-high strength steel
type: journal_article
user_id: '65085'
volume: 137
year: '2025'
...
---
_id: '61526'
author:
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: 'Philipp '
full_name: 'Bähr, Philipp '
last_name: Bähr
- first_name: Lilia
full_name: Schuster, Lilia
last_name: Schuster
- first_name: Julia
full_name: Westhoff, Julia
last_name: Westhoff
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Enes
full_name: Ibeski, Enes
last_name: Ibeski
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Silke
full_name: Sommer, Silke
last_name: Sommer
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Olfert V, Bähr P, Schuster L, et al. Failure behavior prediction for resistance
spot-welded three-layered dissimilar joints with advanced high-strength steel.
Journal of Manufacturing Processes. 2025;154:311-331. doi:https://doi.org/10.1016/j.jmapro.2025.09.077
apa: Olfert, V., Bähr, P., Schuster, L., Westhoff, J., Yang, K., Ibeski, E., Hein,
D., Sommer, S., & Meschut, G. (2025). Failure behavior prediction for resistance
spot-welded three-layered dissimilar joints with advanced high-strength steel.
Journal of Manufacturing Processes, 154, 311–331. https://doi.org/10.1016/j.jmapro.2025.09.077
bibtex: '@article{Olfert_Bähr_Schuster_Westhoff_Yang_Ibeski_Hein_Sommer_Meschut_2025,
title={Failure behavior prediction for resistance spot-welded three-layered dissimilar
joints with advanced high-strength steel}, volume={154}, DOI={https://doi.org/10.1016/j.jmapro.2025.09.077},
journal={Journal of Manufacturing Processes}, publisher={Elsevier}, author={Olfert,
Viktoria and Bähr, Philipp and Schuster, Lilia and Westhoff, Julia and Yang,
Keke and Ibeski, Enes and Hein, David and Sommer, Silke and Meschut, Gerson},
year={2025}, pages={311–331} }'
chicago: 'Olfert, Viktoria, Philipp Bähr, Lilia Schuster, Julia Westhoff, Keke
Yang, Enes Ibeski, David Hein, Silke Sommer, and Gerson Meschut. “Failure Behavior
Prediction for Resistance Spot-Welded Three-Layered Dissimilar Joints with Advanced
High-Strength Steel.” Journal of Manufacturing Processes 154 (2025): 311–31.
https://doi.org/10.1016/j.jmapro.2025.09.077.'
ieee: 'V. Olfert et al., “Failure behavior prediction for resistance spot-welded
three-layered dissimilar joints with advanced high-strength steel,” Journal
of Manufacturing Processes, vol. 154, pp. 311–331, 2025, doi: https://doi.org/10.1016/j.jmapro.2025.09.077.'
mla: Olfert, Viktoria, et al. “Failure Behavior Prediction for Resistance Spot-Welded
Three-Layered Dissimilar Joints with Advanced High-Strength Steel.” Journal
of Manufacturing Processes, vol. 154, Elsevier, 2025, pp. 311–31, doi:https://doi.org/10.1016/j.jmapro.2025.09.077.
short: V. Olfert, P. Bähr, L. Schuster, J. Westhoff, K. Yang, E. Ibeski, D. Hein,
S. Sommer, G. Meschut, Journal of Manufacturing Processes 154 (2025) 311–331.
date_created: 2025-10-06T16:11:28Z
date_updated: 2025-10-06T16:19:53Z
ddc:
- '620'
department:
- _id: '157'
doi: https://doi.org/10.1016/j.jmapro.2025.09.077
file:
- access_level: open_access
content_type: application/pdf
creator: kekeyang
date_created: 2025-10-06T16:11:21Z
date_updated: 2025-10-06T16:11:21Z
file_id: '61527'
file_name: 1-s2.0-S152661252501059X-main.pdf
file_size: 7973182
relation: main_file
file_date_updated: 2025-10-06T16:11:21Z
has_accepted_license: '1'
intvolume: ' 154'
language:
- iso: eng
oa: '1'
page: 311-331
publication: Journal of Manufacturing Processes
publication_identifier:
unknown:
- 1526-6125
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Failure behavior prediction for resistance spot-welded three-layered dissimilar
joints with advanced high-strength steel
type: journal_article
user_id: '65085'
volume: 154
year: '2025'
...
---
_id: '59091'
abstract:
- lang: eng
text: Abstract. Liquid Metal Embrittlement (LME) cracking is a well-documented
issue encountered during resistance spot welding (RSW) of zinc-coated advanced
high-strength steels (AHSS) in automotive manufacturing. Given that existing research
has predominantly focused on laboratory-scale samples and lacks investigation
into the load-bearing capacity of joints under crash conditions, this study aims
to fill these gaps by analyzing third-generation zinc-coated AHSS. S-Rail components
were produced through stamping to replicate real-world manufacturing conditions
and geometries of automotive parts. To account for the disturbances typically
encountered in production, samples with LME cracks were intentionally fabricated.
Subsequently, a modified three-point bending test, assisted by numerical simulations,
was developed to effectively apply loads to the weld spots of the S-Rail components.
Results from crash tests demonstrated that observed light crack severity does
not significantly compromise the joint's load-bearing capacity or lead to earlier
joint failure.
author:
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Max
full_name: Biegler, Max
last_name: Biegler
- first_name: Linus
full_name: Happe, Linus
last_name: Happe
- first_name: Marius
full_name: Striewe, Marius
id: '30228'
last_name: Striewe
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: 'Michael '
full_name: 'Rethmeier, Michael '
last_name: Rethmeier
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Yang K, Biegler M, Happe L, et al. Influence of Liquid metal embrittlement
on load-bearing capacity of resistance spot welds under crash loads: A study based
on S-Rail components. In: Materials Research Proceedings. Vol 52. Materials
Research Forum LLC; 2025. doi:10.21741/9781644903551-42'
apa: 'Yang, K., Biegler, M., Happe, L., Striewe, M., Olfert, V., Hein, D., Rethmeier,
M., & Meschut, G. (2025). Influence of Liquid metal embrittlement on load-bearing
capacity of resistance spot welds under crash loads: A study based on S-Rail components.
Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-42'
bibtex: '@inproceedings{Yang_Biegler_Happe_Striewe_Olfert_Hein_Rethmeier_Meschut_2025,
title={Influence of Liquid metal embrittlement on load-bearing capacity of resistance
spot welds under crash loads: A study based on S-Rail components}, volume={52},
DOI={10.21741/9781644903551-42},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Yang, Keke and Biegler, Max and Happe, Linus and Striewe, Marius
and Olfert, Viktoria and Hein, David and Rethmeier, Michael and Meschut, Gerson},
year={2025} }'
chicago: 'Yang, Keke, Max Biegler, Linus Happe, Marius Striewe, Viktoria Olfert,
David Hein, Michael Rethmeier, and Gerson Meschut. “Influence of Liquid Metal
Embrittlement on Load-Bearing Capacity of Resistance Spot Welds under Crash Loads:
A Study Based on S-Rail Components.” In Materials Research Proceedings,
Vol. 52. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-42.'
ieee: 'K. Yang et al., “Influence of Liquid metal embrittlement on load-bearing
capacity of resistance spot welds under crash loads: A study based on S-Rail components,”
in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-42.'
mla: 'Yang, Keke, et al. “Influence of Liquid Metal Embrittlement on Load-Bearing
Capacity of Resistance Spot Welds under Crash Loads: A Study Based on S-Rail Components.”
Materials Research Proceedings, vol. 52, Materials Research Forum LLC,
2025, doi:10.21741/9781644903551-42.'
short: 'K. Yang, M. Biegler, L. Happe, M. Striewe, V. Olfert, D. Hein, M. Rethmeier,
G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC,
2025.'
date_created: 2025-03-25T07:59:49Z
date_updated: 2025-12-26T13:44:36Z
ddc:
- '600'
department:
- _id: '157'
doi: 10.21741/9781644903551-42
file:
- access_level: closed
content_type: application/pdf
creator: kekeyang
date_created: 2025-03-25T08:02:30Z
date_updated: 2025-03-25T08:02:30Z
file_id: '59092'
file_name: Shemat.pdf
file_size: 1901767
relation: main_file
success: 1
file_date_updated: 2025-03-25T08:02:30Z
has_accepted_license: '1'
intvolume: ' 52'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/3.0/
main_file_link:
- open_access: '1'
oa: '1'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: 'Influence of Liquid metal embrittlement on load-bearing capacity of resistance
spot welds under crash loads: A study based on S-Rail components'
type: conference
user_id: '65085'
volume: 52
year: '2025'
...
---
_id: '60604'
abstract:
- lang: eng
text: Abstract. In the field of online condition monitoring, non-destructive
testing methods using active acoustic testing [1] emerged as innovative tools.
These techniques are particularly effective because damage in joined structures
leads to significant changes in their vibrational characteristics. However, the
consistent use of online condition monitoring through active acoustic testing
combined with complex pattern recognition for early crack detection in joined
components has not yet been fully established. This research aims to develop an
online crack detection system employing pattern recognition techniques under cyclic
loading during fatigue tests, utilizing non-contact active acoustic testing with
laser vibrometry. Due to the wide range of materials that can be joined, mechanical
joining processes can be used in many different industry branches. Self-pierce
riveting (SPR), in particular, is a well-established joining process. Therefore,
the investigations for online crack detection initially focus on SPR joints. To
achieve this, the fatigue behavior of SPR joints in a lap-shear configuration
was characterized. Experimental fatigue testing demonstrated that SPR joint failure
occurs either through cracks propagating in the sheet material away from the rivet
or in the rivet foot, depending on the material combination. Laser vibrometry
has been successfully used as a crack detection system and has proven to be effective
in detecting crack initiation in SPR joints. Cracks can be detected without contact
regardless of the material combination, the damage location, the size of the damage,
or the type of damage. The optimization of the crack detection system involved
several key enhancements, including adjusting data acquisition to improve crack
detection, incorporating principal component analysis (PCA) to reduce dimensionality,
and implementing a classification model based on a global training dataset. An
intuitive, problem-specific software demonstrator for analyzing the crack initiation
behavior of SPR joints under cyclic loading was developed and iteratively optimized.
Future work will focus on the implementation of an autoencoder network to further
enhance crack detection capabilities.
author:
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Maik
full_name: Gollnick, Maik
last_name: Gollnick
- first_name: Jacob
full_name: Krause, Jacob
last_name: Krause
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Olfert V, Yang K, Gollnick M, Krause J, Hein D, Meschut G. Analysis of fatigue
behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry.
In: Materials Research Proceedings. Vol 54. Materials Research Forum LLC;
2025. doi:10.21741/9781644903599-154'
apa: Olfert, V., Yang, K., Gollnick, M., Krause, J., Hein, D., & Meschut, G.
(2025). Analysis of fatigue behaviour of self-piercing riveted joints under cyclic
loading using laser vibrometry. Materials Research Proceedings, 54.
https://doi.org/10.21741/9781644903599-154
bibtex: '@inproceedings{Olfert_Yang_Gollnick_Krause_Hein_Meschut_2025, title={Analysis
of fatigue behaviour of self-piercing riveted joints under cyclic loading using
laser vibrometry}, volume={54}, DOI={10.21741/9781644903599-154},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Olfert, Viktoria and Yang, Keke and Gollnick, Maik and Krause, Jacob
and Hein, David and Meschut, Gerson}, year={2025} }'
chicago: Olfert, Viktoria, Keke Yang, Maik Gollnick, Jacob Krause, David Hein, and
Gerson Meschut. “Analysis of Fatigue Behaviour of Self-Piercing Riveted Joints
under Cyclic Loading Using Laser Vibrometry.” In Materials Research Proceedings,
Vol. 54. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-154.
ieee: 'V. Olfert, K. Yang, M. Gollnick, J. Krause, D. Hein, and G. Meschut, “Analysis
of fatigue behaviour of self-piercing riveted joints under cyclic loading using
laser vibrometry,” in Materials Research Proceedings, 2025, vol. 54, doi:
10.21741/9781644903599-154.'
mla: Olfert, Viktoria, et al. “Analysis of Fatigue Behaviour of Self-Piercing Riveted
Joints under Cyclic Loading Using Laser Vibrometry.” Materials Research Proceedings,
vol. 54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-154.
short: 'V. Olfert, K. Yang, M. Gollnick, J. Krause, D. Hein, G. Meschut, in: Materials
Research Proceedings, Materials Research Forum LLC, 2025.'
date_created: 2025-07-14T13:25:26Z
date_updated: 2025-12-26T13:45:01Z
department:
- _id: '157'
doi: 10.21741/9781644903599-154
intvolume: ' 54'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Analysis of fatigue behaviour of self-piercing riveted joints under cyclic
loading using laser vibrometry
type: conference
user_id: '65085'
volume: 54
year: '2025'
...
---
_id: '50726'
abstract:
- lang: eng
text: Resistance spot‐welded joints containing press‐hardened steels are
seen to exhibit a fracture mode called total dome failure, where the weld nugget
completely separates from one steel sheet along the weld nugget edge. The effect
of weld nugget shape and material property gradients is studied based on damage
mechanics modeling and experimental validation to shed light on the underlying
influencing factors. For a three‐steel‐sheet spot‐welded joint combining DP600
(1.5 mm)–CR1900T (1.0 mm)–CR1900T (1.0 mm), experiments under shear loading reveal
that fracture occurs in the DP600 sheet along the weld nugget edge. In subsequent
numerical simulation studies with damage mechanics models whose parameters are
independently calibrated for every involved material configuration, three variations
of the geometrical joint configuration are considered—an approximation of the
real joint, one variation with a steeper weld nugget shape, and one variation
with a less pronounced gradient between weld nugget material and heat‐affected
zone material properties. The results of the finite‐element simulations show that
a shallower weld nugget and a more pronounced material gradient lead to a faster
increase of plastic strain at the edge of the weld nugget and promote the occurrence
of total dome failure.
author:
- first_name: Lilia
full_name: Schuster, Lilia
last_name: Schuster
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Oleksii
full_name: Sherepenko, Oleksii
last_name: Sherepenko
- first_name: Clemens
full_name: Fehrenbach, Clemens
last_name: Fehrenbach
- first_name: Shiyuan
full_name: Song, Shiyuan
last_name: Song
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Elliot
full_name: Biro, Elliot
last_name: Biro
- first_name: Sebastian
full_name: Münstermann, Sebastian
last_name: Münstermann
citation:
ama: Schuster L, Olfert V, Sherepenko O, et al. Influences of Weld Nugget Shape
and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints.
steel research international. Published online 2024. doi:10.1002/srin.202300530
apa: Schuster, L., Olfert, V., Sherepenko, O., Fehrenbach, C., Song, S., Hein, D.,
Meschut, G., Biro, E., & Münstermann, S. (2024). Influences of Weld Nugget
Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints.
Steel Research International. https://doi.org/10.1002/srin.202300530
bibtex: '@article{Schuster_Olfert_Sherepenko_Fehrenbach_Song_Hein_Meschut_Biro_Münstermann_2024,
title={Influences of Weld Nugget Shape and Material Gradient on the Shear Strength
of Resistance Spot‐Welded Joints}, DOI={10.1002/srin.202300530},
journal={steel research international}, publisher={Wiley}, author={Schuster, Lilia
and Olfert, Viktoria and Sherepenko, Oleksii and Fehrenbach, Clemens and Song,
Shiyuan and Hein, David and Meschut, Gerson and Biro, Elliot and Münstermann,
Sebastian}, year={2024} }'
chicago: Schuster, Lilia, Viktoria Olfert, Oleksii Sherepenko, Clemens Fehrenbach,
Shiyuan Song, David Hein, Gerson Meschut, Elliot Biro, and Sebastian Münstermann.
“Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of
Resistance Spot‐Welded Joints.” Steel Research International, 2024. https://doi.org/10.1002/srin.202300530.
ieee: 'L. Schuster et al., “Influences of Weld Nugget Shape and Material
Gradient on the Shear Strength of Resistance Spot‐Welded Joints,” steel research
international, 2024, doi: 10.1002/srin.202300530.'
mla: Schuster, Lilia, et al. “Influences of Weld Nugget Shape and Material Gradient
on the Shear Strength of Resistance Spot‐Welded Joints.” Steel Research International,
Wiley, 2024, doi:10.1002/srin.202300530.
short: L. Schuster, V. Olfert, O. Sherepenko, C. Fehrenbach, S. Song, D. Hein, G.
Meschut, E. Biro, S. Münstermann, Steel Research International (2024).
date_created: 2024-01-22T09:17:07Z
date_updated: 2024-03-18T12:49:31Z
department:
- _id: '157'
doi: 10.1002/srin.202300530
keyword:
- Materials Chemistry
- Metals and Alloys
- Physical and Theoretical Chemistry
- Condensed Matter Physics
language:
- iso: eng
publication: steel research international
publication_identifier:
issn:
- 1611-3683
- 1869-344X
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Influences of Weld Nugget Shape and Material Gradient on the Shear Strength
of Resistance Spot‐Welded Joints
type: journal_article
user_id: '5974'
year: '2024'
...
---
_id: '54847'
abstract:
- lang: eng
text: The widespread adoption of ultra-high strength steels, due to their high bulk
resistivity, intensifies expulsion issues in resistance spot welding (RSW), deteriorating
both the spot weld and surface quality. This study presents a novel approach to
prevent expulsion by employing a preheating current. Through characteristic analysis
of joint formation under critical welding current, the importance of plastic material
encapsulation around the weld nugget (plastic shell) at high temperatures in preventing
expulsion is highlighted. To evaluate the effect of preheating on the plastic
shell and understand its mechanism in expulsion prevention, a two-dimensional
welding simulation model for dissimilar ultra-high strength steel joints was established.
The results showed that optimal preheating enhances the thickness of the plastic
shell, improving its ability to encapsulate the weld nugget during the primary
welding phase, thereby diminishing expulsion risks. Experimental validation confirmed
that by employing the optimal preheating current, the maximum nugget diameter
was enhanced to 9.42 mm, marking an increase of 13.4 % and extending the weldable
current range by 27.5 %. Under quasi-static cross-tensile loading, joints with
preheating demonstrated a 7.9 % enhancement in maximum load-bearing capacity compared
to joints without preheating, showing a reproducible and complete pull-out failure
mode within the heat-affected zone. This study offers a prevention method based
on underlying mechanisms, providing a new perspective for future research on welding
parameter optimization with the aim of expulsion prevention.
article_type: original
author:
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Bassel
full_name: El-Sari, Bassel
last_name: El-Sari
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Zhuoqun
full_name: Wang, Zhuoqun
last_name: Wang
- first_name: Max
full_name: Biegler, Max
last_name: Biegler
- first_name: Michael
full_name: Rethmeier, Michael
last_name: Rethmeier
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Yang K, El-Sari B, Olfert V, et al. Expulsion prevention in resistance spot
welding of dissimilar joints with ultra-high strength steel: An analysis of the
mechanism and effect of preheating current. Journal of Manufacturing Processes.
2024;124:489-502. doi:10.1016/j.jmapro.2024.06.034'
apa: 'Yang, K., El-Sari, B., Olfert, V., Wang, Z., Biegler, M., Rethmeier, M., &
Meschut, G. (2024). Expulsion prevention in resistance spot welding of dissimilar
joints with ultra-high strength steel: An analysis of the mechanism and effect
of preheating current. Journal of Manufacturing Processes, 124,
489–502. https://doi.org/10.1016/j.jmapro.2024.06.034'
bibtex: '@article{Yang_El-Sari_Olfert_Wang_Biegler_Rethmeier_Meschut_2024, title={Expulsion
prevention in resistance spot welding of dissimilar joints with ultra-high strength
steel: An analysis of the mechanism and effect of preheating current}, volume={124},
DOI={10.1016/j.jmapro.2024.06.034},
journal={Journal of Manufacturing Processes}, publisher={Elsevier BV}, author={Yang,
Keke and El-Sari, Bassel and Olfert, Viktoria and Wang, Zhuoqun and Biegler, Max
and Rethmeier, Michael and Meschut, Gerson}, year={2024}, pages={489–502} }'
chicago: 'Yang, Keke, Bassel El-Sari, Viktoria Olfert, Zhuoqun Wang, Max Biegler,
Michael Rethmeier, and Gerson Meschut. “Expulsion Prevention in Resistance Spot
Welding of Dissimilar Joints with Ultra-High Strength Steel: An Analysis of the
Mechanism and Effect of Preheating Current.” Journal of Manufacturing Processes
124 (2024): 489–502. https://doi.org/10.1016/j.jmapro.2024.06.034.'
ieee: 'K. Yang et al., “Expulsion prevention in resistance spot welding of
dissimilar joints with ultra-high strength steel: An analysis of the mechanism
and effect of preheating current,” Journal of Manufacturing Processes,
vol. 124, pp. 489–502, 2024, doi: 10.1016/j.jmapro.2024.06.034.'
mla: 'Yang, Keke, et al. “Expulsion Prevention in Resistance Spot Welding of Dissimilar
Joints with Ultra-High Strength Steel: An Analysis of the Mechanism and Effect
of Preheating Current.” Journal of Manufacturing Processes, vol. 124, Elsevier
BV, 2024, pp. 489–502, doi:10.1016/j.jmapro.2024.06.034.'
short: K. Yang, B. El-Sari, V. Olfert, Z. Wang, M. Biegler, M. Rethmeier, G. Meschut,
Journal of Manufacturing Processes 124 (2024) 489–502.
date_created: 2024-06-23T21:58:29Z
date_updated: 2024-10-18T06:59:27Z
ddc:
- '670'
department:
- _id: '157'
doi: 10.1016/j.jmapro.2024.06.034
file:
- access_level: closed
content_type: application/pdf
creator: kekeyang
date_created: 2024-06-23T21:59:20Z
date_updated: 2024-06-23T21:59:20Z
file_id: '54848'
file_name: 1-s2.0-S1526612524006145-main.pdf
file_size: 12432409
relation: main_file
success: 1
file_date_updated: 2024-06-23T21:59:20Z
has_accepted_license: '1'
intvolume: ' 124'
keyword:
- Expulsion Resistance spot welding Finite element modelling Preheating Weldable current
range Ultra-high strength steel
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S1526612524006145
oa: '1'
page: 489-502
publication: Journal of Manufacturing Processes
publication_identifier:
issn:
- 1526-6125
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: 'Expulsion prevention in resistance spot welding of dissimilar joints with
ultra-high strength steel: An analysis of the mechanism and effect of preheating
current'
type: journal_article
user_id: '65085'
volume: 124
year: '2024'
...
---
_id: '57311'
article_type: original
author:
- first_name: Keke
full_name: Yang, Keke
id: '65085'
last_name: Yang
orcid: 0000-0001-9201-9304
- first_name: Matthias
full_name: Sowada, Matthias
id: '44475'
last_name: Sowada
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Georg
full_name: Seitz, Georg
last_name: Seitz
- first_name: Vincent
full_name: Schreiber, Vincent
last_name: Schreiber
- first_name: Marcel
full_name: Heitmann, Marcel
id: '38072'
last_name: Heitmann
orcid: 0009-0002-4181-8928
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Max
full_name: Biegler, Max
last_name: Biegler
- first_name: Sven
full_name: Jüttner, Sven
last_name: Jüttner
- first_name: Michael
full_name: Rethmeier, Michael
last_name: Rethmeier
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Yang K, Sowada M, Olfert V, et al. Influence of liquid metal embrittlement
on the failure behavior of dissimilar spot welds with advanced high-strength steel:
A component study. Journal of Materials Research and Technology. Published
online 2024. doi:10.1016/j.jmrt.2024.11.166'
apa: 'Yang, K., Sowada, M., Olfert, V., Seitz, G., Schreiber, V., Heitmann, M.,
Hein, D., Biegler, M., Jüttner, S., Rethmeier, M., & Meschut, G. (2024). Influence
of liquid metal embrittlement on the failure behavior of dissimilar spot welds
with advanced high-strength steel: A component study. Journal of Materials
Research and Technology. https://doi.org/10.1016/j.jmrt.2024.11.166'
bibtex: '@article{Yang_Sowada_Olfert_Seitz_Schreiber_Heitmann_Hein_Biegler_Jüttner_Rethmeier_et
al._2024, title={Influence of liquid metal embrittlement on the failure behavior
of dissimilar spot welds with advanced high-strength steel: A component study},
DOI={10.1016/j.jmrt.2024.11.166},
journal={Journal of Materials Research and Technology}, publisher={Elsevier BV},
author={Yang, Keke and Sowada, Matthias and Olfert, Viktoria and Seitz, Georg
and Schreiber, Vincent and Heitmann, Marcel and Hein, David and Biegler, Max and
Jüttner, Sven and Rethmeier, Michael and et al.}, year={2024} }'
chicago: 'Yang, Keke, Matthias Sowada, Viktoria Olfert, Georg Seitz, Vincent Schreiber,
Marcel Heitmann, David Hein, et al. “Influence of Liquid Metal Embrittlement on
the Failure Behavior of Dissimilar Spot Welds with Advanced High-Strength Steel:
A Component Study.” Journal of Materials Research and Technology, 2024.
https://doi.org/10.1016/j.jmrt.2024.11.166.'
ieee: 'K. Yang et al., “Influence of liquid metal embrittlement on the failure
behavior of dissimilar spot welds with advanced high-strength steel: A component
study,” Journal of Materials Research and Technology, 2024, doi: 10.1016/j.jmrt.2024.11.166.'
mla: 'Yang, Keke, et al. “Influence of Liquid Metal Embrittlement on the Failure
Behavior of Dissimilar Spot Welds with Advanced High-Strength Steel: A Component
Study.” Journal of Materials Research and Technology, Elsevier BV, 2024,
doi:10.1016/j.jmrt.2024.11.166.'
short: K. Yang, M. Sowada, V. Olfert, G. Seitz, V. Schreiber, M. Heitmann, D. Hein,
M. Biegler, S. Jüttner, M. Rethmeier, G. Meschut, Journal of Materials Research
and Technology (2024).
date_created: 2024-11-21T14:25:40Z
date_updated: 2025-11-10T14:20:05Z
ddc:
- '620'
department:
- _id: '157'
doi: 10.1016/j.jmrt.2024.11.166
file:
- access_level: closed
content_type: application/pdf
creator: kekeyang
date_created: 2025-02-07T10:06:14Z
date_updated: 2025-02-07T10:06:14Z
file_id: '58533'
file_name: KYA_VÖ5.pdf
file_size: 10799297
relation: main_file
success: 1
file_date_updated: 2025-02-07T10:06:14Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: Journal of Materials Research and Technology
publication_identifier:
issn:
- 2238-7854
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: 'Influence of liquid metal embrittlement on the failure behavior of dissimilar
spot welds with advanced high-strength steel: A component study'
type: journal_article
user_id: '65085'
year: '2024'
...
---
_id: '50727'
abstract:
- lang: eng
text: "Die aktuellen politischen und wirtschaftlichen Rahmenbedingungen zur Reduzierung
der CO2-Emissionen sowie der Trend zur flächendeckenden Elektromobilität führen
zu einer Vielzahl an neuen Herausforderungen für die Auslegung zukünftiger Fahrzeugkonzepte.
Eine besondere Herausforderung ist das durch die Batterie ins Fahrzeug eingebrachte
Zusatzgewicht. Hierdurch ergibt sich ein Konflikt zu der bestehenden Kundenerwartung
nach einer hohen Reichweite.\r\nDurch den umfangreichen Einsatz von höchstfesten
Stählen in dünnen Blechdicken im Karosseriebau soll die Reduzierung des Gesamtfahrzeuggewichts
vorangetrieben werden. Vor allem im stahlintensiven Leichtbau ist das Widerstandspunktschweißen
aufgrund des hohen Automatisierungsgrads, der Prozesssicherheit und der damit
verbundenen Wirtschaftlichkeit das dominierende Fügeverfahren. Um Begrenzungen
des Bauraums der Karosserie zu begegnen und um den Materialeinsatz im Leichtbau
möglichst effizient zu gestalten, werden mehrschnittige Punktschweißverbindungen
eingesetzt. Hieraus ergeben sich neue Herausforderungen für die Vorhersage des
Trag- und Versagensverhaltens unter Crashbelastung.\r\nDieser Beitrag stellt eine
systematische Charakterisierung von 3-Blechverbindungen zur Auffindung von formelmäßigen,
empirischen Zusammenhängen zwischen der Festigkeit der Verbindung und den Einflussgrößen
vor.\r\nNach der Identifikation geeigneter Einflussgrößen, wie zum Beispiel Blechfestigkeit,
Blechanordnung, Blechdickenkombination sowie Belastungsart und Lasteinleitung,
auf das Trag- und Versagensverhalten, werden numerische Simulationen durchgeführt,
um Ursachen für auftretende Phänomene aus den experimentellen Ergebnissen aufzuklären.
Weiterhin wird untersucht, inwieweit das Verhalten von 2-Blechverbindungen auf
\r\n3-Blechverbindungen übertragbar ist. Die gefundenen Zusammenhänge sollen schnelle
und kostengünstige Abschätzungen über die Festigkeit von 3-Blechbverbindungen
ermöglichen. Darüber hinaus werden Ersatzmodelle für die Crashsimulation von \r\n3-Blechverbindungen
entwickelt, die recheneffizient für die Sicherheitsbewertung von großen, geschweißten
Bauteilen eingesetzt werden können. Dabei sollen insbesondere die Einflüsse des
Lastangriffs an jeweils einer oder beiden Fügebenen auf die Festigkeit und Energieabsorption
unter verschiedenen Belastungen wie Zug, Scherung sowie Biegung abbildbar sein. "
author:
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Lilia
full_name: Schuster, Lilia
last_name: Schuster
- first_name: Philipp
full_name: Bähr, Philipp
last_name: Bähr
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Silke
full_name: Sommer, Silke
last_name: Sommer
citation:
ama: 'Olfert V, Schuster L, Bähr P, Hein D, Meschut G, Sommer S. Methodenentwicklung
zur Prognose des Crashverhaltens von widerstandspunktgeschweißten 3-Stahlblechverbindungen.
In: ; 2023.'
apa: Olfert, V., Schuster, L., Bähr, P., Hein, D., Meschut, G., & Sommer, S.
(2023). Methodenentwicklung zur Prognose des Crashverhaltens von widerstandspunktgeschweißten
3-Stahlblechverbindungen. 25. DVC-Sondertagung Widerstandsschweissen , Duisburg.
bibtex: '@inproceedings{Olfert_Schuster_Bähr_Hein_Meschut_Sommer_2023, title={Methodenentwicklung
zur Prognose des Crashverhaltens von widerstandspunktgeschweißten 3-Stahlblechverbindungen},
author={Olfert, Viktoria and Schuster, Lilia and Bähr, Philipp and Hein, David
and Meschut, Gerson and Sommer, Silke}, year={2023} }'
chicago: Olfert, Viktoria, Lilia Schuster, Philipp Bähr, David Hein, Gerson Meschut,
and Silke Sommer. “Methodenentwicklung Zur Prognose Des Crashverhaltens von Widerstandspunktgeschweißten
3-Stahlblechverbindungen,” 2023.
ieee: V. Olfert, L. Schuster, P. Bähr, D. Hein, G. Meschut, and S. Sommer, “Methodenentwicklung
zur Prognose des Crashverhaltens von widerstandspunktgeschweißten 3-Stahlblechverbindungen,”
presented at the 25. DVC-Sondertagung Widerstandsschweissen , Duisburg, 2023.
mla: Olfert, Viktoria, et al. Methodenentwicklung Zur Prognose Des Crashverhaltens
von Widerstandspunktgeschweißten 3-Stahlblechverbindungen. 2023.
short: 'V. Olfert, L. Schuster, P. Bähr, D. Hein, G. Meschut, S. Sommer, in: 2023.'
conference:
end_date: 2023-06-29
location: Duisburg
name: '25. DVC-Sondertagung Widerstandsschweissen '
start_date: 2023-06-28
date_created: 2024-01-22T09:25:52Z
date_updated: 2026-02-23T10:26:52Z
department:
- _id: '157'
language:
- iso: eng
quality_controlled: '1'
status: public
title: Methodenentwicklung zur Prognose des Crashverhaltens von widerstandspunktgeschweißten
3-Stahlblechverbindungen
type: conference
user_id: '7728'
year: '2023'
...
---
_id: '35947'
abstract:
- lang: eng
text: "The recent trend towards extensive electric mobility leads to a variety of
new challenges for the engineering of future vehicle concepts. One particular
challenge is the additional weight added to the vehicle by the battery, which
stands in direct contrast to the existing customer expectation of a high driving
range. The reduction of the total vehicle weight is driven by the extensive use
of ultra-high-strength steels in thin sheet thicknesses in car body construction.
Resistance spot welding is the dominant joining process in steel-intensive lightweight
construction due to its high degree of automation, process reliability and the
associated economic efficiency.\r\nIn order to comply limitations of the space
in the vehicle body and to ensure the most efficient use of materials in lightweight
construction, joints are used that connect several sheets with a single spot weld.
This leads to new challenges for the prediction of the load-bearing capacity and
failure behaviour under crash loading. \r\nThis paper presents a systematic characterisation
of 3 sheet steel joints in order to find formulary, empirical relationships between
the load-bearing capacity of the joint and the affecting parameters.\r\nNumerical
simulations are carried out in order to clarify the causes of occurring phenomena
in experiments. For this purpose, influencing variables such as joint strength,
joint arrangement, sheet thickness, sheet strength, load type and load case on
the load bearing capacity and failure behaviour are identified.\r\nFurthermore,
the extent to which the behaviour of 2-sheet joints can be transferred to 3-sheet
joints is investigated. A formulary correlation enables a quick and inexpensive
estimates of the load-bearing capacity of 3-sheet metal connections. These models
can be used for a computer-efficient simulation of components with three layered
spot welded joints."
author:
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Lilia
full_name: Schuster, Lilia
last_name: Schuster
- first_name: Silke
full_name: Sommer, Silke
last_name: Sommer
citation:
ama: 'Olfert V, Meschut G, Hein D, Schuster L, Sommer S. Development of a crash
behaviour prediction method for resistance spot welded 3-steel sheet joints. In:
SCT; 2022.'
apa: Olfert, V., Meschut, G., Hein, D., Schuster, L., & Sommer, S. (2022). Development
of a crash behaviour prediction method for resistance spot welded 3-steel sheet
joints. SCT-2022, Mailand.
bibtex: '@inproceedings{Olfert_Meschut_Hein_Schuster_Sommer_2022, place={Mailand},
title={Development of a crash behaviour prediction method for resistance spot
welded 3-steel sheet joints}, publisher={SCT}, author={Olfert, Viktoria and Meschut,
Gerson and Hein, David and Schuster, Lilia and Sommer, Silke}, year={2022} }'
chicago: 'Olfert, Viktoria, Gerson Meschut, David Hein, Lilia Schuster, and Silke
Sommer. “Development of a Crash Behaviour Prediction Method for Resistance Spot
Welded 3-Steel Sheet Joints.” Mailand: SCT, 2022.'
ieee: V. Olfert, G. Meschut, D. Hein, L. Schuster, and S. Sommer, “Development of
a crash behaviour prediction method for resistance spot welded 3-steel sheet joints,”
presented at the SCT-2022, Mailand, 2022.
mla: Olfert, Viktoria, et al. Development of a Crash Behaviour Prediction Method
for Resistance Spot Welded 3-Steel Sheet Joints. SCT, 2022.
short: 'V. Olfert, G. Meschut, D. Hein, L. Schuster, S. Sommer, in: SCT, Mailand,
2022.'
conference:
end_date: 2022-06-23
location: Mailand
name: SCT-2022
start_date: 2022-06-19
date_created: 2023-01-11T09:44:29Z
date_updated: 2026-02-23T10:28:10Z
language:
- iso: eng
main_file_link:
- url: https://www.sct-2022.com/
place: Mailand
publisher: SCT
quality_controlled: '1'
status: public
title: Development of a crash behaviour prediction method for resistance spot welded
3-steel sheet joints
type: conference
user_id: '7728'
year: '2022'
...
---
_id: '31499'
author:
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: David
full_name: Hein, David
id: '7728'
last_name: Hein
- first_name: Philip
full_name: Rochel, Philip
last_name: Rochel
- first_name: Silke
full_name: Sommer, Silke
last_name: Sommer
citation:
ama: 'Olfert V, Meschut G, Hein D, Rochel P, Sommer S. Einfluss fertigungsbedingter
Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen
unter Crashbelastung. In: ; 2021.'
apa: Olfert, V., Meschut, G., Hein, D., Rochel, P., & Sommer, S. (2021). Einfluss
fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch
gefügter Verbindungen unter Crashbelastung. 11. Fügetechnisches Gemeinschaftskolloquium,
Dresden.
bibtex: '@inproceedings{Olfert_Meschut_Hein_Rochel_Sommer_2021, title={Einfluss
fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch
gefügter Verbindungen unter Crashbelastung}, author={Olfert, Viktoria and Meschut,
Gerson and Hein, David and Rochel, Philip and Sommer, Silke}, year={2021} }'
chicago: Olfert, Viktoria, Gerson Meschut, David Hein, Philip Rochel, and Silke
Sommer. “Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten
mechanisch gefügter Verbindungen unter Crashbelastung,” 2021.
ieee: V. Olfert, G. Meschut, D. Hein, P. Rochel, and S. Sommer, “Einfluss fertigungsbedingter
Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen
unter Crashbelastung,” presented at the 11. Fügetechnisches Gemeinschaftskolloquium,
Dresden, 2021.
mla: Olfert, Viktoria, et al. Einfluss fertigungsbedingter Toleranzen auf das
Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen unter Crashbelastung.
2021.
short: 'V. Olfert, G. Meschut, D. Hein, P. Rochel, S. Sommer, in: 2021.'
conference:
end_date: 2021-12-08
location: Dresden
name: 11. Fügetechnisches Gemeinschaftskolloquium
start_date: 2021-12-07
date_created: 2022-05-30T08:50:00Z
date_updated: 2022-05-30T08:52:02Z
department:
- _id: '157'
language:
- iso: ger
publication_status: published
status: public
title: Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten
mechanisch gefügter Verbindungen unter Crashbelastung
type: conference_abstract
user_id: '5974'
year: '2021'
...
---
_id: '20451'
author:
- first_name: Philip
full_name: Rochel, Philip
last_name: Rochel
- first_name: Viktoria
full_name: Olfert, Viktoria
id: '5974'
last_name: Olfert
- first_name: Patrick
full_name: Giese, Patrick
last_name: Giese
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Silke
full_name: Sommer, Silke
last_name: Sommer
citation:
ama: 'Rochel P, Olfert V, Giese P, Meschut G, Sommer S. Einfluss fertigungsbedingter
Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen
unter Crashbelastung. In: ; 2019.'
apa: Rochel, P., Olfert, V., Giese, P., Meschut, G., & Sommer, S. (2019). Einfluss
fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch
gefügter Verbindungen unter Crashbelastung. Presented at the 9. Fügetechnisches
Gemeinschaftskolloquium, Braunschweig, Germany .
bibtex: '@inproceedings{Rochel_Olfert_Giese_Meschut_Sommer_2019, title={Einfluss
fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch
gefügter Verbindungen unter Crashbelastung}, author={Rochel, Philip and Olfert,
Viktoria and Giese, Patrick and Meschut, Gerson and Sommer, Silke}, year={2019}
}'
chicago: Rochel, Philip, Viktoria Olfert, Patrick Giese, Gerson Meschut, and Silke
Sommer. “Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten
mechanisch gefügter Verbindungen unter Crashbelastung,” 2019.
ieee: P. Rochel, V. Olfert, P. Giese, G. Meschut, and S. Sommer, “Einfluss fertigungsbedingter
Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen
unter Crashbelastung,” presented at the 9. Fügetechnisches Gemeinschaftskolloquium,
Braunschweig, Germany , 2019.
mla: Rochel, Philip, et al. Einfluss fertigungsbedingter Toleranzen auf das Versagens-
und Verformungsverhalten mechanisch gefügter Verbindungen unter Crashbelastung.
2019.
short: 'P. Rochel, V. Olfert, P. Giese, G. Meschut, S. Sommer, in: 2019.'
conference:
end_date: 2019-12-04
location: 'Braunschweig, Germany '
name: 9. Fügetechnisches Gemeinschaftskolloquium
start_date: 2019-12-03
date_created: 2020-11-23T09:06:50Z
date_updated: 2022-01-06T06:54:27Z
department:
- _id: '157'
language:
- iso: ger
publication_identifier:
isbn:
- ' 978-3-86776-580-0'
publication_status: published
status: public
title: Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten
mechanisch gefügter Verbindungen unter Crashbelastung
type: conference
user_id: '5974'
year: '2019'
...