[{"oa":"1","date_updated":"2025-12-22T08:24:19Z","volume":157,"author":[{"full_name":"Yang, Keke","id":"65085","orcid":"0000-0001-9201-9304","last_name":"Yang","first_name":"Keke"},{"first_name":"Leonhard","last_name":"Männer","id":"51255","full_name":"Männer, Leonhard"},{"first_name":"Zhuoqun","last_name":"Wang","full_name":"Wang, Zhuoqun"},{"first_name":"Viktoria","full_name":"Olfert, Viktoria","id":"5974","last_name":"Olfert"},{"last_name":"Böhm","full_name":"Böhm, Yannic","id":"84119","first_name":"Yannic"},{"id":"7728","full_name":"Hein, David","last_name":"Hein","first_name":"David"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246"}],"doi":"10.1016/j.jmapro.2025.12.036","main_file_link":[{"url":"https://doi.org/10.1016/j.jmapro.2025.12.036","open_access":"1"}],"has_accepted_license":"1","publication_identifier":{"issn":["1526-6125"]},"publication_status":"published","page":"984-1000","intvolume":"       157","citation":{"ieee":"K. Yang <i>et al.</i>, “Process window expansion with transferable applicability in three-layer dissimilar steel resistance spot welding via expulsion prevention,” <i>Journal of Manufacturing Processes</i>, vol. 157, no. Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes., pp. 984–1000, 2026, doi: <a href=\"https://doi.org/10.1016/j.jmapro.2025.12.036\">10.1016/j.jmapro.2025.12.036</a>.","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.” <i>Journal of Manufacturing Processes</i> 157, no. Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes. (2026): 984–1000. <a href=\"https://doi.org/10.1016/j.jmapro.2025.12.036\">https://doi.org/10.1016/j.jmapro.2025.12.036</a>.","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. <i>Journal of Manufacturing Processes</i>. 2026;157(Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.):984-1000. doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.12.036\">10.1016/j.jmapro.2025.12.036</a>","apa":"Yang, K., Männer, L., Wang, Z., Olfert, V., Böhm, Y., Hein, D., &#38; Meschut, G. (2026). Process window expansion with transferable applicability in three-layer dissimilar steel resistance spot welding via expulsion prevention. <i>Journal of Manufacturing Processes</i>, <i>157</i>(Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.), 984–1000. <a href=\"https://doi.org/10.1016/j.jmapro.2025.12.036\">https://doi.org/10.1016/j.jmapro.2025.12.036</a>","short":"K. Yang, L. Männer, Z. Wang, V. Olfert, Y. Böhm, D. Hein, G. Meschut, Journal of Manufacturing Processes 157 (2026) 984–1000.","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={<a href=\"https://doi.org/10.1016/j.jmapro.2025.12.036\">10.1016/j.jmapro.2025.12.036</a>}, 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} }","mla":"Yang, Keke, et al. “Process Window Expansion with Transferable Applicability in Three-Layer Dissimilar Steel Resistance Spot Welding via Expulsion Prevention.” <i>Journal of Manufacturing Processes</i>, vol. 157, no. Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes., Elsevier BV, 2026, pp. 984–1000, doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.12.036\">10.1016/j.jmapro.2025.12.036</a>."},"_id":"63391","department":[{"_id":"157"}],"user_id":"65085","article_type":"original","file_date_updated":"2025-12-22T08:21:51Z","type":"journal_article","status":"public","publisher":"Elsevier BV","date_created":"2025-12-22T08:20:34Z","title":"Process window expansion with transferable applicability in three-layer dissimilar steel resistance spot welding via expulsion prevention","quality_controlled":"1","issue":"Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.","year":"2026","ddc":["620"],"language":[{"iso":"eng"}],"publication":"Journal of Manufacturing Processes","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."}],"file":[{"date_updated":"2025-12-22T08:21:51Z","creator":"kekeyang","date_created":"2025-12-22T08:21:51Z","file_size":21431773,"file_name":"1-s2.0-S1526612525013568-main.pdf","access_level":"closed","file_id":"63392","content_type":"application/pdf","success":1,"relation":"main_file"}]},{"publication_status":"published","publication_identifier":{"issn":["1526-6125"]},"has_accepted_license":"1","citation":{"short":"V. Olfert, K. Yang, P. Rochel, P. Bähr, D. Hein, S. Sommer, G. Meschut, Journal of Manufacturing Processes 157 (2026) 1250–1273.","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={<a href=\"https://doi.org/10.1016/j.jmapro.2025.12.058\">10.1016/j.jmapro.2025.12.058</a>}, 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} }","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.” <i>Journal of Manufacturing Processes</i>, vol. 157, no. Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes., Elsevier BV, 2026, pp. 1250–73, doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.12.058\">10.1016/j.jmapro.2025.12.058</a>.","apa":"Olfert, V., Yang, K., Rochel, P., Bähr, P., Hein, D., Sommer, S., &#38; Meschut, G. (2026). Predictive modeling of tolerance-dependent failure behavior of self-pierce riveted joints: From coupon-level tests to sub-component validation. <i>Journal of Manufacturing Processes</i>, <i>157</i>(Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.), 1250–1273. <a href=\"https://doi.org/10.1016/j.jmapro.2025.12.058\">https://doi.org/10.1016/j.jmapro.2025.12.058</a>","ieee":"V. Olfert <i>et al.</i>, “Predictive modeling of tolerance-dependent failure behavior of self-pierce riveted joints: From coupon-level tests to sub-component validation,” <i>Journal of Manufacturing Processes</i>, vol. 157, no. Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes., pp. 1250–1273, 2026, doi: <a href=\"https://doi.org/10.1016/j.jmapro.2025.12.058\">10.1016/j.jmapro.2025.12.058</a>.","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.” <i>Journal of Manufacturing Processes</i> 157, no. Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes. (2026): 1250–73. <a href=\"https://doi.org/10.1016/j.jmapro.2025.12.058\">https://doi.org/10.1016/j.jmapro.2025.12.058</a>.","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. <i>Journal of Manufacturing Processes</i>. 2026;157(Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.):1250-1273. doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.12.058\">10.1016/j.jmapro.2025.12.058</a>"},"page":"1250-1273","intvolume":"       157","author":[{"full_name":"Olfert, Viktoria","id":"5974","last_name":"Olfert","first_name":"Viktoria"},{"id":"65085","full_name":"Yang, Keke","last_name":"Yang","orcid":"0000-0001-9201-9304","first_name":"Keke"},{"first_name":"Philip","full_name":"Rochel, Philip","last_name":"Rochel"},{"first_name":"Philipp","last_name":"Bähr","full_name":"Bähr, Philipp"},{"id":"7728","full_name":"Hein, David","last_name":"Hein","first_name":"David"},{"first_name":"Silke","last_name":"Sommer","full_name":"Sommer, Silke"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut"}],"volume":157,"date_updated":"2025-12-26T14:06:38Z","oa":"1","main_file_link":[{"url":"https://www.sciencedirect.com/science/article/pii/S1526612525013787?via%3Dihub","open_access":"1"}],"doi":"10.1016/j.jmapro.2025.12.058","type":"journal_article","status":"public","user_id":"65085","department":[{"_id":"157"}],"_id":"63418","file_date_updated":"2025-12-26T13:42:22Z","article_type":"original","issue":"Special issue entitled: ‘Trends on spot joining’ published in Journal of Manufacturing Processes.","quality_controlled":"1","year":"2026","date_created":"2025-12-26T13:41:43Z","publisher":"Elsevier BV","title":"Predictive modeling of tolerance-dependent failure behavior of self-pierce riveted joints: From coupon-level tests to sub-component validation","publication":"Journal of Manufacturing Processes","file":[{"file_size":28796238,"access_level":"closed","file_id":"63419","file_name":"1-s2.0-S1526612525013787-main.pdf","date_updated":"2025-12-26T13:42:22Z","date_created":"2025-12-26T13:42:22Z","creator":"kekeyang","success":1,"relation":"main_file","content_type":"application/pdf"}],"abstract":[{"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.","lang":"eng"}],"language":[{"iso":"eng"}],"ddc":["620"]},{"year":"2025","quality_controlled":"1","title":"A novel welding schedule for expanding the expulsion-free process window in resistance spot welding of dissimilar joints with ultra-high strength steel","publisher":"Elsevier BV","date_created":"2025-02-07T10:08:08Z","file":[{"success":1,"relation":"main_file","content_type":"application/pdf","file_size":3747516,"file_id":"58536","access_level":"closed","file_name":"KYA_VÖ6.pdf","date_updated":"2025-02-07T10:09:17Z","date_created":"2025-02-07T10:09:17Z","creator":"kekeyang"}],"publication":"Journal of Manufacturing Processes","ddc":["670"],"language":[{"iso":"eng"}],"citation":{"ieee":"K. Yang <i>et al.</i>, “A novel welding schedule for expanding the expulsion-free process window in resistance spot welding of dissimilar joints with ultra-high strength steel,” <i>Journal of Manufacturing Processes</i>, vol. 137, pp. 306–319, 2025, doi: <a href=\"https://doi.org/10.1016/j.jmapro.2025.02.009\">10.1016/j.jmapro.2025.02.009</a>.","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.” <i>Journal of Manufacturing Processes</i> 137 (2025): 306–19. <a href=\"https://doi.org/10.1016/j.jmapro.2025.02.009\">https://doi.org/10.1016/j.jmapro.2025.02.009</a>.","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. <i>Journal of Manufacturing Processes</i>. 2025;137:306-319. doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.02.009\">10.1016/j.jmapro.2025.02.009</a>","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={<a href=\"https://doi.org/10.1016/j.jmapro.2025.02.009\">10.1016/j.jmapro.2025.02.009</a>}, 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} }","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.","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.” <i>Journal of Manufacturing Processes</i>, vol. 137, Elsevier BV, 2025, pp. 306–19, doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.02.009\">10.1016/j.jmapro.2025.02.009</a>.","apa":"Yang, K., Wang, Z., Haak, V., Olfert, V., El-Sari, B., Hein, D., Biegler, M., Rethmeier, M., &#38; 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. <i>Journal of Manufacturing Processes</i>, <i>137</i>, 306–319. <a href=\"https://doi.org/10.1016/j.jmapro.2025.02.009\">https://doi.org/10.1016/j.jmapro.2025.02.009</a>"},"page":"306-319","intvolume":"       137","publication_status":"published","has_accepted_license":"1","publication_identifier":{"issn":["1526-6125"]},"main_file_link":[{"open_access":"1"}],"doi":"10.1016/j.jmapro.2025.02.009","date_updated":"2025-02-24T07:30:23Z","oa":"1","author":[{"id":"65085","full_name":"Yang, Keke","last_name":"Yang","orcid":"0000-0001-9201-9304","first_name":"Keke"},{"first_name":"Zhuoqun","full_name":"Wang, Zhuoqun","last_name":"Wang"},{"id":"60398","full_name":"Haak, Viktor","last_name":"Haak","first_name":"Viktor"},{"full_name":"Olfert, Viktoria","id":"5974","last_name":"Olfert","first_name":"Viktoria"},{"last_name":"El-Sari","full_name":"El-Sari, Bassel","first_name":"Bassel"},{"full_name":"Hein, David","id":"7728","last_name":"Hein","first_name":"David"},{"first_name":"Max","full_name":"Biegler, Max","last_name":"Biegler"},{"first_name":"Michael","full_name":"Rethmeier, Michael","last_name":"Rethmeier"},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"volume":137,"status":"public","type":"journal_article","file_date_updated":"2025-02-07T10:09:17Z","_id":"58535","user_id":"65085","department":[{"_id":"157"}]},{"quality_controlled":"1","year":"2025","publisher":"Elsevier","date_created":"2025-10-06T16:11:28Z","title":"Failure behavior prediction for resistance spot-welded three-layered dissimilar joints with advanced high-strength steel","publication":"Journal of Manufacturing Processes","file":[{"file_size":7973182,"file_id":"61527","file_name":"1-s2.0-S152661252501059X-main.pdf","access_level":"open_access","date_updated":"2025-10-06T16:11:21Z","creator":"kekeyang","date_created":"2025-10-06T16:11:21Z","relation":"main_file","content_type":"application/pdf"}],"ddc":["620"],"language":[{"iso":"eng"}],"publication_status":"published","has_accepted_license":"1","publication_identifier":{"unknown":["1526-6125"]},"citation":{"apa":"Olfert, V., Bähr, P., Schuster, L., Westhoff, J., Yang, K., Ibeski, E., Hein, D., Sommer, S., &#38; Meschut, G. (2025). Failure behavior prediction for resistance spot-welded three-layered dissimilar joints with advanced high-strength steel. <i>Journal of Manufacturing Processes</i>, <i>154</i>, 311–331. <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.077\">https://doi.org/10.1016/j.jmapro.2025.09.077</a>","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={<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.077\">https://doi.org/10.1016/j.jmapro.2025.09.077</a>}, 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} }","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.","mla":"Olfert, Viktoria, et al. “Failure Behavior Prediction for Resistance Spot-Welded Three-Layered Dissimilar Joints with Advanced High-Strength Steel.” <i>Journal of Manufacturing Processes</i>, vol. 154, Elsevier, 2025, pp. 311–31, doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.077\">https://doi.org/10.1016/j.jmapro.2025.09.077</a>.","ieee":"V. Olfert <i>et al.</i>, “Failure behavior prediction for resistance spot-welded three-layered dissimilar joints with advanced high-strength steel,” <i>Journal of Manufacturing Processes</i>, vol. 154, pp. 311–331, 2025, doi: <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.077\">https://doi.org/10.1016/j.jmapro.2025.09.077</a>.","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.” <i>Journal of Manufacturing Processes</i> 154 (2025): 311–31. <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.077\">https://doi.org/10.1016/j.jmapro.2025.09.077</a>.","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. <i>Journal of Manufacturing Processes</i>. 2025;154:311-331. doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.077\">https://doi.org/10.1016/j.jmapro.2025.09.077</a>"},"intvolume":"       154","page":"311-331","oa":"1","date_updated":"2025-10-06T16:19:53Z","author":[{"first_name":"Viktoria","full_name":"Olfert, Viktoria","id":"5974","last_name":"Olfert"},{"first_name":"Philipp ","last_name":"Bähr","full_name":"Bähr, Philipp "},{"first_name":"Lilia","last_name":"Schuster","full_name":"Schuster, Lilia"},{"first_name":"Julia","last_name":"Westhoff","full_name":"Westhoff, Julia"},{"orcid":"0000-0001-9201-9304","last_name":"Yang","full_name":"Yang, Keke","id":"65085","first_name":"Keke"},{"last_name":"Ibeski","full_name":"Ibeski, Enes","first_name":"Enes"},{"id":"7728","full_name":"Hein, David","last_name":"Hein","first_name":"David"},{"last_name":"Sommer","full_name":"Sommer, Silke","first_name":"Silke"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246"}],"volume":154,"doi":"https://doi.org/10.1016/j.jmapro.2025.09.077","type":"journal_article","status":"public","_id":"61526","user_id":"65085","department":[{"_id":"157"}],"file_date_updated":"2025-10-06T16:11:21Z"},{"oa":"1","date_updated":"2025-12-26T13:44:36Z","author":[{"last_name":"Yang","orcid":"0000-0001-9201-9304","id":"65085","full_name":"Yang, Keke","first_name":"Keke"},{"first_name":"Max","full_name":"Biegler, Max","last_name":"Biegler"},{"first_name":"Linus","last_name":"Happe","full_name":"Happe, Linus"},{"last_name":"Striewe","id":"30228","full_name":"Striewe, Marius","first_name":"Marius"},{"id":"5974","full_name":"Olfert, Viktoria","last_name":"Olfert","first_name":"Viktoria"},{"first_name":"David","full_name":"Hein, David","id":"7728","last_name":"Hein"},{"last_name":"Rethmeier","full_name":"Rethmeier, Michael ","first_name":"Michael "},{"full_name":"Meschut, Gerson","id":"32056","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"volume":52,"main_file_link":[{"open_access":"1"}],"doi":"10.21741/9781644903551-42","publication_status":"published","has_accepted_license":"1","publication_identifier":{"issn":["2474-395X"]},"citation":{"apa":"Yang, K., Biegler, M., Happe, L., Striewe, M., Olfert, V., Hein, D., Rethmeier, M., &#38; 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. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-42\">https://doi.org/10.21741/9781644903551-42</a>","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.","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.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-42\">10.21741/9781644903551-42</a>.","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={<a href=\"https://doi.org/10.21741/9781644903551-42\">10.21741/9781644903551-42</a>}, 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} }","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: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-42\">10.21741/9781644903551-42</a>","ieee":"K. Yang <i>et al.</i>, “Influence of Liquid metal embrittlement on load-bearing capacity of resistance spot welds under crash loads: A study based on S-Rail components,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-42\">10.21741/9781644903551-42</a>.","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 <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-42\">https://doi.org/10.21741/9781644903551-42</a>."},"intvolume":"        52","_id":"59091","user_id":"65085","department":[{"_id":"157"}],"file_date_updated":"2025-03-25T08:02:30Z","type":"conference","status":"public","publisher":"Materials Research Forum LLC","date_created":"2025-03-25T07:59:49Z","title":"Influence of Liquid metal embrittlement on load-bearing capacity of resistance spot welds under crash loads: A study based on S-Rail components","quality_controlled":"1","year":"2025","ddc":["600"],"language":[{"iso":"eng"}],"publication":"Materials Research Proceedings","abstract":[{"lang":"eng","text":"<jats:p>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.</jats:p>"}],"file":[{"success":1,"relation":"main_file","content_type":"application/pdf","file_size":1901767,"file_id":"59092","file_name":"Shemat.pdf","access_level":"closed","date_updated":"2025-03-25T08:02:30Z","date_created":"2025-03-25T08:02:30Z","creator":"kekeyang"}],"license":"https://creativecommons.org/licenses/by-nc/3.0/"},{"abstract":[{"text":"<jats:p>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.</jats:p>","lang":"eng"}],"publication":"Materials Research Proceedings","language":[{"iso":"eng"}],"year":"2025","quality_controlled":"1","title":"Analysis of fatigue behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry","publisher":"Materials Research Forum LLC","date_created":"2025-07-14T13:25:26Z","status":"public","type":"conference","_id":"60604","department":[{"_id":"157"}],"user_id":"65085","intvolume":"        54","citation":{"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 <i>Materials Research Proceedings</i>, 2025, vol. 54, doi: <a href=\"https://doi.org/10.21741/9781644903599-154\">10.21741/9781644903599-154</a>.","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 <i>Materials Research Proceedings</i>, Vol. 54. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903599-154\">https://doi.org/10.21741/9781644903599-154</a>.","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: <i>Materials Research Proceedings</i>. Vol 54. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903599-154\">10.21741/9781644903599-154</a>","apa":"Olfert, V., Yang, K., Gollnick, M., Krause, J., Hein, D., &#38; Meschut, G. (2025). Analysis of fatigue behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry. <i>Materials Research Proceedings</i>, <i>54</i>. <a href=\"https://doi.org/10.21741/9781644903599-154\">https://doi.org/10.21741/9781644903599-154</a>","short":"V. Olfert, K. Yang, M. Gollnick, J. Krause, D. Hein, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","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={<a href=\"https://doi.org/10.21741/9781644903599-154\">10.21741/9781644903599-154</a>}, 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} }","mla":"Olfert, Viktoria, et al. “Analysis of Fatigue Behaviour of Self-Piercing Riveted Joints under Cyclic Loading Using Laser Vibrometry.” <i>Materials Research Proceedings</i>, vol. 54, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903599-154\">10.21741/9781644903599-154</a>."},"publication_identifier":{"issn":["2474-395X"]},"publication_status":"published","doi":"10.21741/9781644903599-154","main_file_link":[{"open_access":"1"}],"date_updated":"2025-12-26T13:45:01Z","oa":"1","volume":54,"author":[{"first_name":"Viktoria","full_name":"Olfert, Viktoria","id":"5974","last_name":"Olfert"},{"first_name":"Keke","last_name":"Yang","orcid":"0000-0001-9201-9304","full_name":"Yang, Keke","id":"65085"},{"last_name":"Gollnick","full_name":"Gollnick, Maik","first_name":"Maik"},{"full_name":"Krause, Jacob","last_name":"Krause","first_name":"Jacob"},{"first_name":"David","id":"7728","full_name":"Hein, David","last_name":"Hein"},{"first_name":"Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","id":"32056","full_name":"Meschut, Gerson"}]},{"date_created":"2024-01-22T09:17:07Z","author":[{"first_name":"Lilia","last_name":"Schuster","full_name":"Schuster, Lilia"},{"first_name":"Viktoria","id":"5974","full_name":"Olfert, Viktoria","last_name":"Olfert"},{"first_name":"Oleksii","last_name":"Sherepenko","full_name":"Sherepenko, Oleksii"},{"last_name":"Fehrenbach","full_name":"Fehrenbach, Clemens","first_name":"Clemens"},{"first_name":"Shiyuan","last_name":"Song","full_name":"Song, Shiyuan"},{"full_name":"Hein, David","id":"7728","last_name":"Hein","first_name":"David"},{"last_name":"Meschut","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson","id":"32056","first_name":"Gerson"},{"last_name":"Biro","full_name":"Biro, Elliot","first_name":"Elliot"},{"first_name":"Sebastian","full_name":"Münstermann, Sebastian","last_name":"Münstermann"}],"date_updated":"2024-03-18T12:49:31Z","publisher":"Wiley","doi":"10.1002/srin.202300530","title":"Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints","publication_status":"published","publication_identifier":{"issn":["1611-3683","1869-344X"]},"quality_controlled":"1","citation":{"apa":"Schuster, L., Olfert, V., Sherepenko, O., Fehrenbach, C., Song, S., Hein, D., Meschut, G., Biro, E., &#38; Münstermann, S. (2024). Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints. <i>Steel Research International</i>. <a href=\"https://doi.org/10.1002/srin.202300530\">https://doi.org/10.1002/srin.202300530</a>","short":"L. Schuster, V. Olfert, O. Sherepenko, C. Fehrenbach, S. Song, D. Hein, G. Meschut, E. Biro, S. Münstermann, Steel Research International (2024).","mla":"Schuster, Lilia, et al. “Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints.” <i>Steel Research International</i>, Wiley, 2024, doi:<a href=\"https://doi.org/10.1002/srin.202300530\">10.1002/srin.202300530</a>.","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={<a href=\"https://doi.org/10.1002/srin.202300530\">10.1002/srin.202300530</a>}, 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} }","ieee":"L. Schuster <i>et al.</i>, “Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints,” <i>steel research international</i>, 2024, doi: <a href=\"https://doi.org/10.1002/srin.202300530\">10.1002/srin.202300530</a>.","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.” <i>Steel Research International</i>, 2024. <a href=\"https://doi.org/10.1002/srin.202300530\">https://doi.org/10.1002/srin.202300530</a>.","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. <i>steel research international</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1002/srin.202300530\">10.1002/srin.202300530</a>"},"year":"2024","user_id":"5974","department":[{"_id":"157"}],"_id":"50726","language":[{"iso":"eng"}],"keyword":["Materials Chemistry","Metals and Alloys","Physical and Theoretical Chemistry","Condensed Matter Physics"],"type":"journal_article","publication":"steel research international","status":"public","abstract":[{"lang":"eng","text":"<jats:p>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.</jats:p>"}]},{"quality_controlled":"1","year":"2024","publisher":"Elsevier BV","date_created":"2024-06-23T21:58:29Z","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","publication":"Journal of Manufacturing Processes","abstract":[{"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.","lang":"eng"}],"file":[{"file_name":"1-s2.0-S1526612524006145-main.pdf","access_level":"closed","file_id":"54848","file_size":12432409,"creator":"kekeyang","date_created":"2024-06-23T21:59:20Z","date_updated":"2024-06-23T21:59:20Z","relation":"main_file","success":1,"content_type":"application/pdf"}],"keyword":["Expulsion Resistance spot welding Finite element modelling Preheating Weldable current range Ultra-high strength steel"],"ddc":["670"],"language":[{"iso":"eng"}],"has_accepted_license":"1","publication_identifier":{"issn":["1526-6125"]},"publication_status":"published","page":"489-502","intvolume":"       124","citation":{"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.” <i>Journal of Manufacturing Processes</i> 124 (2024): 489–502. <a href=\"https://doi.org/10.1016/j.jmapro.2024.06.034\">https://doi.org/10.1016/j.jmapro.2024.06.034</a>.","ieee":"K. Yang <i>et al.</i>, “Expulsion prevention in resistance spot welding of dissimilar joints with ultra-high strength steel: An analysis of the mechanism and effect of preheating current,” <i>Journal of Manufacturing Processes</i>, vol. 124, pp. 489–502, 2024, doi: <a href=\"https://doi.org/10.1016/j.jmapro.2024.06.034\">10.1016/j.jmapro.2024.06.034</a>.","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. <i>Journal of Manufacturing Processes</i>. 2024;124:489-502. doi:<a href=\"https://doi.org/10.1016/j.jmapro.2024.06.034\">10.1016/j.jmapro.2024.06.034</a>","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={<a href=\"https://doi.org/10.1016/j.jmapro.2024.06.034\">10.1016/j.jmapro.2024.06.034</a>}, 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} }","short":"K. Yang, B. El-Sari, V. Olfert, Z. Wang, M. Biegler, M. Rethmeier, G. Meschut, Journal of Manufacturing Processes 124 (2024) 489–502.","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.” <i>Journal of Manufacturing Processes</i>, vol. 124, Elsevier BV, 2024, pp. 489–502, doi:<a href=\"https://doi.org/10.1016/j.jmapro.2024.06.034\">10.1016/j.jmapro.2024.06.034</a>.","apa":"Yang, K., El-Sari, B., Olfert, V., Wang, Z., Biegler, M., Rethmeier, M., &#38; 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. <i>Journal of Manufacturing Processes</i>, <i>124</i>, 489–502. <a href=\"https://doi.org/10.1016/j.jmapro.2024.06.034\">https://doi.org/10.1016/j.jmapro.2024.06.034</a>"},"date_updated":"2024-10-18T06:59:27Z","oa":"1","volume":124,"author":[{"full_name":"Yang, Keke","id":"65085","orcid":"0000-0001-9201-9304","last_name":"Yang","first_name":"Keke"},{"first_name":"Bassel","full_name":"El-Sari, Bassel","last_name":"El-Sari"},{"last_name":"Olfert","id":"5974","full_name":"Olfert, Viktoria","first_name":"Viktoria"},{"full_name":"Wang, Zhuoqun","last_name":"Wang","first_name":"Zhuoqun"},{"full_name":"Biegler, Max","last_name":"Biegler","first_name":"Max"},{"first_name":"Michael","full_name":"Rethmeier, Michael","last_name":"Rethmeier"},{"full_name":"Meschut, Gerson","id":"32056","orcid":"0000-0002-2763-1246","last_name":"Meschut","first_name":"Gerson"}],"doi":"10.1016/j.jmapro.2024.06.034","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S1526612524006145"}],"type":"journal_article","status":"public","_id":"54847","department":[{"_id":"157"}],"user_id":"65085","article_type":"original","file_date_updated":"2024-06-23T21:59:20Z"},{"quality_controlled":"1","year":"2024","date_created":"2024-11-21T14:25:40Z","publisher":"Elsevier BV","title":"Influence of liquid metal embrittlement on the failure behavior of dissimilar spot welds with advanced high-strength steel: A component study","publication":"Journal of Materials Research and Technology","file":[{"date_created":"2025-02-07T10:06:14Z","creator":"kekeyang","date_updated":"2025-02-07T10:06:14Z","file_name":"KYA_VÖ5.pdf","file_id":"58533","access_level":"closed","file_size":10799297,"content_type":"application/pdf","relation":"main_file","success":1}],"language":[{"iso":"eng"}],"ddc":["620"],"publication_status":"published","has_accepted_license":"1","publication_identifier":{"issn":["2238-7854"]},"citation":{"apa":"Yang, K., Sowada, M., Olfert, V., Seitz, G., Schreiber, V., Heitmann, M., Hein, D., Biegler, M., Jüttner, S., Rethmeier, M., &#38; Meschut, G. (2024). Influence of liquid metal embrittlement on the failure behavior of dissimilar spot welds with advanced high-strength steel: A component study. <i>Journal of Materials Research and Technology</i>. <a href=\"https://doi.org/10.1016/j.jmrt.2024.11.166\">https://doi.org/10.1016/j.jmrt.2024.11.166</a>","bibtex":"@article{Yang_Sowada_Olfert_Seitz_Schreiber_Heitmann_Hein_Biegler_Jüttner_Rethmeier_et al._2024, title={Influence of liquid metal embrittlement on the failure behavior of dissimilar spot welds with advanced high-strength steel: A component study}, DOI={<a href=\"https://doi.org/10.1016/j.jmrt.2024.11.166\">10.1016/j.jmrt.2024.11.166</a>}, journal={Journal of Materials Research and Technology}, publisher={Elsevier BV}, author={Yang, Keke and Sowada, Matthias and Olfert, Viktoria and Seitz, Georg and Schreiber, Vincent and Heitmann, Marcel and Hein, David and Biegler, Max and Jüttner, Sven and Rethmeier, Michael and et al.}, year={2024} }","mla":"Yang, Keke, et al. “Influence of Liquid Metal Embrittlement on the Failure Behavior of Dissimilar Spot Welds with Advanced High-Strength Steel: A Component Study.” <i>Journal of Materials Research and Technology</i>, Elsevier BV, 2024, doi:<a href=\"https://doi.org/10.1016/j.jmrt.2024.11.166\">10.1016/j.jmrt.2024.11.166</a>.","short":"K. Yang, M. Sowada, V. Olfert, G. Seitz, V. Schreiber, M. Heitmann, D. Hein, M. Biegler, S. Jüttner, M. Rethmeier, G. Meschut, Journal of Materials Research and Technology (2024).","chicago":"Yang, Keke, Matthias Sowada, Viktoria Olfert, Georg Seitz, Vincent Schreiber, Marcel Heitmann, David Hein, et al. “Influence of Liquid Metal Embrittlement on the Failure Behavior of Dissimilar Spot Welds with Advanced High-Strength Steel: A Component Study.” <i>Journal of Materials Research and Technology</i>, 2024. <a href=\"https://doi.org/10.1016/j.jmrt.2024.11.166\">https://doi.org/10.1016/j.jmrt.2024.11.166</a>.","ieee":"K. Yang <i>et al.</i>, “Influence of liquid metal embrittlement on the failure behavior of dissimilar spot welds with advanced high-strength steel: A component study,” <i>Journal of Materials Research and Technology</i>, 2024, doi: <a href=\"https://doi.org/10.1016/j.jmrt.2024.11.166\">10.1016/j.jmrt.2024.11.166</a>.","ama":"Yang K, Sowada M, Olfert V, et al. Influence of liquid metal embrittlement on the failure behavior of dissimilar spot welds with advanced high-strength steel: A component study. <i>Journal of Materials Research and Technology</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1016/j.jmrt.2024.11.166\">10.1016/j.jmrt.2024.11.166</a>"},"author":[{"first_name":"Keke","last_name":"Yang","orcid":"0000-0001-9201-9304","id":"65085","full_name":"Yang, Keke"},{"id":"44475","full_name":"Sowada, Matthias","last_name":"Sowada","first_name":"Matthias"},{"last_name":"Olfert","id":"5974","full_name":"Olfert, Viktoria","first_name":"Viktoria"},{"first_name":"Georg","full_name":"Seitz, Georg","last_name":"Seitz"},{"first_name":"Vincent","last_name":"Schreiber","full_name":"Schreiber, Vincent"},{"full_name":"Heitmann, Marcel","id":"38072","last_name":"Heitmann","orcid":"0009-0002-4181-8928","first_name":"Marcel"},{"first_name":"David","last_name":"Hein","id":"7728","full_name":"Hein, David"},{"full_name":"Biegler, Max","last_name":"Biegler","first_name":"Max"},{"full_name":"Jüttner, Sven","last_name":"Jüttner","first_name":"Sven"},{"first_name":"Michael","full_name":"Rethmeier, Michael","last_name":"Rethmeier"},{"first_name":"Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson","id":"32056"}],"date_updated":"2025-11-10T14:20:05Z","oa":"1","main_file_link":[{"open_access":"1"}],"doi":"10.1016/j.jmrt.2024.11.166","type":"journal_article","status":"public","user_id":"65085","department":[{"_id":"157"}],"_id":"57311","file_date_updated":"2025-02-07T10:06:14Z","article_type":"original"},{"_id":"50727","user_id":"7728","department":[{"_id":"157"}],"language":[{"iso":"eng"}],"type":"conference","abstract":[{"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. ","lang":"eng"}],"status":"public","date_updated":"2026-02-23T10:26:52Z","date_created":"2024-01-22T09:25:52Z","author":[{"first_name":"Viktoria","last_name":"Olfert","full_name":"Olfert, Viktoria","id":"5974"},{"last_name":"Schuster","full_name":"Schuster, Lilia","first_name":"Lilia"},{"full_name":"Bähr, Philipp","last_name":"Bähr","first_name":"Philipp"},{"first_name":"David","last_name":"Hein","id":"7728","full_name":"Hein, David"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246"},{"last_name":"Sommer","full_name":"Sommer, Silke","first_name":"Silke"}],"title":"Methodenentwicklung zur Prognose des Crashverhaltens von widerstandspunktgeschweißten 3-Stahlblechverbindungen","conference":{"location":"Duisburg","end_date":"2023-06-29","start_date":"2023-06-28","name":"25. DVC-Sondertagung Widerstandsschweissen "},"quality_controlled":"1","year":"2023","citation":{"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.","apa":"Olfert, V., Schuster, L., Bähr, P., Hein, D., Meschut, G., &#38; Sommer, S. (2023). <i>Methodenentwicklung zur Prognose des Crashverhaltens von widerstandspunktgeschweißten 3-Stahlblechverbindungen</i>. 25. DVC-Sondertagung Widerstandsschweissen , Duisburg.","ama":"Olfert V, Schuster L, Bähr P, Hein D, Meschut G, Sommer S. Methodenentwicklung zur Prognose des Crashverhaltens von widerstandspunktgeschweißten 3-Stahlblechverbindungen. In: ; 2023.","short":"V. Olfert, L. Schuster, P. Bähr, D. Hein, G. Meschut, S. Sommer, in: 2023.","mla":"Olfert, Viktoria, et al. <i>Methodenentwicklung Zur Prognose Des Crashverhaltens von Widerstandspunktgeschweißten 3-Stahlblechverbindungen</i>. 2023.","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} }"}},{"citation":{"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.","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.","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.","short":"V. Olfert, G. Meschut, D. Hein, L. Schuster, S. Sommer, in: SCT, Mailand, 2022.","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} }","mla":"Olfert, Viktoria, et al. <i>Development of a Crash Behaviour Prediction Method for Resistance Spot Welded 3-Steel Sheet Joints</i>. SCT, 2022.","apa":"Olfert, V., Meschut, G., Hein, D., Schuster, L., &#38; Sommer, S. (2022). <i>Development of a crash behaviour prediction method for resistance spot welded 3-steel sheet joints</i>. SCT-2022, Mailand."},"place":"Mailand","year":"2022","quality_controlled":"1","main_file_link":[{"url":"https://www.sct-2022.com/"}],"conference":{"location":"Mailand","end_date":"2022-06-23","start_date":"2022-06-19","name":"SCT-2022"},"title":"Development of a crash behaviour prediction method for resistance spot welded 3-steel sheet joints","author":[{"last_name":"Olfert","id":"5974","full_name":"Olfert, Viktoria","first_name":"Viktoria"},{"last_name":"Meschut","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson","id":"32056","first_name":"Gerson"},{"last_name":"Hein","full_name":"Hein, David","id":"7728","first_name":"David"},{"last_name":"Schuster","full_name":"Schuster, Lilia","first_name":"Lilia"},{"first_name":"Silke","full_name":"Sommer, Silke","last_name":"Sommer"}],"date_created":"2023-01-11T09:44:29Z","publisher":"SCT","date_updated":"2026-02-23T10:28:10Z","status":"public","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."}],"type":"conference","language":[{"iso":"eng"}],"user_id":"7728","_id":"35947"},{"publication_status":"published","year":"2021","citation":{"apa":"Olfert, V., Meschut, G., Hein, D., Rochel, P., &#38; Sommer, S. (2021). <i>Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen unter Crashbelastung</i>. 11. Fügetechnisches Gemeinschaftskolloquium, Dresden.","short":"V. Olfert, G. Meschut, D. Hein, P. Rochel, S. Sommer, in: 2021.","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} }","mla":"Olfert, Viktoria, et al. <i>Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen unter Crashbelastung</i>. 2021.","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.","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.","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."},"date_updated":"2022-05-30T08:52:02Z","author":[{"id":"5974","full_name":"Olfert, Viktoria","last_name":"Olfert","first_name":"Viktoria"},{"first_name":"Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","id":"32056","full_name":"Meschut, Gerson"},{"last_name":"Hein","id":"7728","full_name":"Hein, David","first_name":"David"},{"last_name":"Rochel","full_name":"Rochel, Philip","first_name":"Philip"},{"first_name":"Silke","full_name":"Sommer, Silke","last_name":"Sommer"}],"date_created":"2022-05-30T08:50:00Z","title":"Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen unter Crashbelastung","conference":{"start_date":"2021-12-07","name":"11. Fügetechnisches Gemeinschaftskolloquium","location":"Dresden","end_date":"2021-12-08"},"type":"conference_abstract","status":"public","_id":"31499","department":[{"_id":"157"}],"user_id":"5974","language":[{"iso":"ger"}]},{"publication_identifier":{"isbn":[" 978-3-86776-580-0"]},"publication_status":"published","citation":{"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} }","short":"P. Rochel, V. Olfert, P. Giese, G. Meschut, S. Sommer, in: 2019.","mla":"Rochel, Philip, et al. <i>Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen unter Crashbelastung</i>. 2019.","apa":"Rochel, P., Olfert, V., Giese, P., Meschut, G., &#38; Sommer, S. (2019). Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen unter Crashbelastung. Presented at the 9. Fügetechnisches Gemeinschaftskolloquium, Braunschweig, Germany .","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.","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.","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."},"year":"2019","author":[{"first_name":"Philip","last_name":"Rochel","full_name":"Rochel, Philip"},{"first_name":"Viktoria","full_name":"Olfert, Viktoria","id":"5974","last_name":"Olfert"},{"first_name":"Patrick","last_name":"Giese","full_name":"Giese, Patrick"},{"last_name":"Meschut","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson","id":"32056","first_name":"Gerson"},{"full_name":"Sommer, Silke","last_name":"Sommer","first_name":"Silke"}],"date_created":"2020-11-23T09:06:50Z","date_updated":"2022-01-06T06:54:27Z","conference":{"location":"Braunschweig, Germany ","end_date":"2019-12-04","start_date":"2019-12-03","name":"9. Fügetechnisches Gemeinschaftskolloquium"},"title":"Einfluss fertigungsbedingter Toleranzen auf das Versagens- und Verformungsverhalten mechanisch gefügter Verbindungen unter Crashbelastung","type":"conference","status":"public","department":[{"_id":"157"}],"user_id":"5974","_id":"20451","language":[{"iso":"ger"}]}]