--- _id: '60977' abstract: - lang: eng text: In the development of advanced lightweight automotive solutions, self-piercing riveting (SPR) offers the possibility of joining multi-material structures to fulfil a wide variety of requirements. With regard to the entire process chain, production-related pre-deformations of the parts to be joined can influence the geometric shape and load capacity of SPR joints. Various studies have investigated the influence of pre-stretched sheet materials, in the sense of pre-drawing processes, on the formation of SPR joints. The impact of pre-stretching sheet metals on the formation of their geometrical characteristics and the shear-tensile strength of SPR processes was observed [1]. Pre-rolled semi-finished products are also joined together in mixed material automotive structures, e.g. tailor rolled blanks. This work aims to investigate the influence of pre-rolled joining parts on the geometric formation and load-carrying capacity of SPR joints. For this purpose, sheets of metal are cold-formed using a rolling process to induce a defined strain-hardening state in the material and then joined in various combinations. As the degree of deformation increases, the rolling of samples can lead to minimal accumulation of damage in the sheet materials, which can influence the joint behaviour. The rolling process, as well as the subsequent joining process, are also investigated by FEM. The influence of pre-rolled semi-finished products on the strength of the SPR joints is investigated. author: - first_name: Malte Christian full_name: Schlichter, Malte Christian id: '61977' last_name: Schlichter - first_name: Özcan full_name: Harabati, Özcan id: '54972' last_name: Harabati - first_name: Jean-Patrick full_name: Ludwig, Jean-Patrick id: '76631' last_name: Ludwig - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Schlichter MC, Harabati Ö, Ludwig J-P, et al. Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints. In: Materials Research Proceedings. Vol 54. Materials Research Forum LLC; 2025. doi:10.21741/9781644903599-148' apa: Schlichter, M. C., Harabati, Ö., Ludwig, J.-P., Böhnke, M., Bielak, C. R., Bobbert, M., & Meschut, G. (2025). Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints. Materials Research Proceedings, 54. https://doi.org/10.21741/9781644903599-148 bibtex: '@inproceedings{Schlichter_Harabati_Ludwig_Böhnke_Bielak_Bobbert_Meschut_2025, title={Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints}, volume={54}, DOI={10.21741/9781644903599-148}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Schlichter, Malte Christian and Harabati, Özcan and Ludwig, Jean-Patrick and Böhnke, Max and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2025} }' chicago: Schlichter, Malte Christian, Özcan Harabati, Jean-Patrick Ludwig, Max Böhnke, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Experimental and Numerical Investigation of the Influence of Rolling-Induced Sheet Metal Deformation on SPR Joints.” In Materials Research Proceedings, Vol. 54. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-148. ieee: 'M. C. Schlichter et al., “Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints,” in Materials Research Proceedings, 2025, vol. 54, doi: 10.21741/9781644903599-148.' mla: Schlichter, Malte Christian, et al. “Experimental and Numerical Investigation of the Influence of Rolling-Induced Sheet Metal Deformation on SPR Joints.” Materials Research Proceedings, vol. 54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-148. short: 'M.C. Schlichter, Ö. Harabati, J.-P. Ludwig, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2025-08-22T10:20:15Z date_updated: 2026-02-24T14:02:01Z department: - _id: '157' doi: 10.21741/9781644903599-148 intvolume: ' 54' language: - iso: eng project: - _id: '135' name: TRR 285 - Subproject A01 - _id: '131' name: TRR 285 - Project Area A - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints type: conference user_id: '7850' volume: 54 year: '2025' ... --- _id: '60978' abstract: - lang: eng text: The present study is an experimental analysis of the influence of pre-forming on the failure behaviour of clinched specimens under quasi-static and cyclic loading conditions. In this context, the geometric formation of the clinched joints is taken into account, with regard to the loading behaviour. The study also includes a comparison of the failure behaviour of quasi-static and cyclic tested specimen. Testing is done on non-pre-deformed and pre-deformed specimens. For this purpose, experimental investigations are carried out on two material combinations consisting of HCT590X steel sheet and EN AW-6014 T4 aluminium sheet. The focus is on the fatigue analysis of the clinched joints. The aim is to identify the failure modes under cyclic loading and the crack formation with regard to forming operations prior to the joining process. The investigations show that the cyclic load-bearing behaviour of the HCT590X joints is reduced by introducing a plastic pre-deformation of the to be joined parts. author: - first_name: Malte Christian full_name: Schlichter, Malte Christian id: '61977' last_name: Schlichter - first_name: Özcan full_name: Harabati, Özcan id: '54972' last_name: Harabati - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson last_name: Meschut citation: ama: 'Schlichter MC, Harabati Ö, Böhnke M, Bielak CR, Bobbert M, Meschut G. Investigation on manufacturing-induced pre-deformation on the fatigue behaviour of clinched joints. In: Materials Research Proceedings. Vol 52. Materials Research Forum LLC; 2025. doi:10.21741/9781644903551-16' apa: Schlichter, M. C., Harabati, Ö., Böhnke, M., Bielak, C. R., Bobbert, M., & Meschut, G. (2025). Investigation on manufacturing-induced pre-deformation on the fatigue behaviour of clinched joints. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-16 bibtex: '@inproceedings{Schlichter_Harabati_Böhnke_Bielak_Bobbert_Meschut_2025, title={Investigation on manufacturing-induced pre-deformation on the fatigue behaviour of clinched joints}, volume={52}, DOI={10.21741/9781644903551-16}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Schlichter, Malte Christian and Harabati, Özcan and Böhnke, Max and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2025} }' chicago: Schlichter, Malte Christian, Özcan Harabati, Max Böhnke, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Investigation on Manufacturing-Induced Pre-Deformation on the Fatigue Behaviour of Clinched Joints.” In Materials Research Proceedings, Vol. 52. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-16. ieee: 'M. C. Schlichter, Ö. Harabati, M. Böhnke, C. R. Bielak, M. Bobbert, and G. Meschut, “Investigation on manufacturing-induced pre-deformation on the fatigue behaviour of clinched joints,” in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-16.' mla: Schlichter, Malte Christian, et al. “Investigation on Manufacturing-Induced Pre-Deformation on the Fatigue Behaviour of Clinched Joints.” Materials Research Proceedings, vol. 52, Materials Research Forum LLC, 2025, doi:10.21741/9781644903551-16. short: 'M.C. Schlichter, Ö. Harabati, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2025-08-22T10:45:56Z date_updated: 2026-02-24T14:02:35Z department: - _id: '157' doi: 10.21741/9781644903551-16 intvolume: ' 52' language: - iso: eng project: - _id: '131' name: TRR 285 - Project Area A - _id: '135' name: TRR 285 - Subproject A01 - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Investigation on manufacturing-induced pre-deformation on the fatigue behaviour of clinched joints type: conference user_id: '7850' volume: 52 year: '2025' ... --- _id: '59587' abstract: - lang: eng text: Abstract. As a widely used sheet metal in clinched joints within the automotive industry, the aluminum alloy EN AW-6014 has been the focus of numerous studies. High-cycle fatigue (HCF) is a critical aspect when assessing the durability of clinched joints. In the present work, the HCF behavior of EN AW-6014 T4 was explored both experimentally and numerically. To model the fatigue behavior, Lemaitre’s two-scale damage model was used. Two key parameters, damage strength and damage exponent, are necessary for numerical investigations of HCF behavior. These parameters were determined through experiments with flat specimens and subsequently validated within a numerical model of clinched joints. The numerical results for fatigue match the experimental ones of the clinched joints quite well. author: - first_name: Chin full_name: Chen, Chin last_name: Chen - first_name: Malte Christian full_name: Schlichter, Malte Christian id: '61977' last_name: Schlichter - first_name: Sven full_name: Harzheim, Sven last_name: Harzheim - first_name: Martin full_name: Hofmann, Martin last_name: Hofmann - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Thomas full_name: Wallmersperger, Thomas last_name: Wallmersperger citation: ama: 'Chen C, Schlichter MC, Harzheim S, et al. High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014. In: Materials Research Proceedings. Vol 52. Materials Research Forum LLC; 2025. doi:10.21741/9781644903551-23' apa: Chen, C., Schlichter, M. C., Harzheim, S., Hofmann, M., Bobbert, M., Meschut, G., & Wallmersperger, T. (2025). High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-23 bibtex: '@inproceedings{Chen_Schlichter_Harzheim_Hofmann_Bobbert_Meschut_Wallmersperger_2025, title={High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014}, volume={52}, DOI={10.21741/9781644903551-23}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Chen, Chin and Schlichter, Malte Christian and Harzheim, Sven and Hofmann, Martin and Bobbert, Mathias and Meschut, Gerson and Wallmersperger, Thomas}, year={2025} }' chicago: Chen, Chin, Malte Christian Schlichter, Sven Harzheim, Martin Hofmann, Mathias Bobbert, Gerson Meschut, and Thomas Wallmersperger. “High-Cycle Fatigue Testing and Parameter Identification for Numerical Simulation of Aluminum Alloy EN AW-6014.” In Materials Research Proceedings, Vol. 52. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-23. ieee: 'C. Chen et al., “High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014,” in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-23.' mla: Chen, Chin, et al. “High-Cycle Fatigue Testing and Parameter Identification for Numerical Simulation of Aluminum Alloy EN AW-6014.” Materials Research Proceedings, vol. 52, Materials Research Forum LLC, 2025, doi:10.21741/9781644903551-23. short: 'C. Chen, M.C. Schlichter, S. Harzheim, M. Hofmann, M. Bobbert, G. Meschut, T. Wallmersperger, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2025-04-15T11:14:53Z date_updated: 2026-02-24T13:43:56Z department: - _id: '157' doi: 10.21741/9781644903551-23 intvolume: ' 52' language: - iso: eng project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014 type: conference user_id: '7850' volume: 52 year: '2025' ... --- _id: '60440' abstract: - lang: eng text: The versatile self-pierce riveting (V-SPR) is a further development of semi-tubular self-pierce riveting. V-SPR enables adaptation to changing boundary conditions, such as a change in the material thickness combination, without varying the rivet die combination due to increased punch actuation and the use of multi-range capable rivets [1]. The inner punch first sets the rivet. The outer punch then forms the rivet head to the respective sheet thickness. For this, the rivet requires a hard shank and a ductile rivet head, which is achieved by an inductive local hardening process [2]. Until now, the joint formation of rivets with graded hardness profile has been challenging to estimate in the FEM simulation due to the inhomogeneous material conditions in the rivet. In this study, a method capable of reproducing the experimentally determined hardness levels of rivets in detail is shown. This FE model enables the realistic modelling of the mechanical properties of the rivet on the basis of the hardness profile in order to predict the correct deformation processes and stresses during the riveting process. First, the detailed experimental hardness mapping of the locally heat-treated rivets is transferred into the FE model. The FEM material model can predict the local strength of the rivet based on hardness by scaling the flow curves. To estimate the predictive capability of the FEM model, the joint formation of rivets with different graded hardness profiles is compared experimentally and simulative. Based on the validated model, the influence of different rivet hardness profiles on the joint formation is analysed numerically. By adapting the material model, a high level of correlation between the experiment's joint formation and the simulation can be achieved. author: - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Holtkamp PK, Bielak CR, Bobbert M, Meschut G. Simulation of the joining process of graded hardened multi-range capable rivets. In: Materials Research Proceedings. Vol 54. Materials Research Forum LLC; 2025. doi:10.21741/9781644903599-153' apa: Holtkamp, P. K., Bielak, C. R., Bobbert, M., & Meschut, G. (2025). Simulation of the joining process of graded hardened multi-range capable rivets. Materials Research Proceedings, 54. https://doi.org/10.21741/9781644903599-153 bibtex: '@inproceedings{Holtkamp_Bielak_Bobbert_Meschut_2025, title={Simulation of the joining process of graded hardened multi-range capable rivets}, volume={54}, DOI={10.21741/9781644903599-153}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Holtkamp, Pia Katharina and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2025} }' chicago: Holtkamp, Pia Katharina, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Simulation of the Joining Process of Graded Hardened Multi-Range Capable Rivets.” In Materials Research Proceedings, Vol. 54. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-153. ieee: 'P. K. Holtkamp, C. R. Bielak, M. Bobbert, and G. Meschut, “Simulation of the joining process of graded hardened multi-range capable rivets,” in Materials Research Proceedings, 2025, vol. 54, doi: 10.21741/9781644903599-153.' mla: Holtkamp, Pia Katharina, et al. “Simulation of the Joining Process of Graded Hardened Multi-Range Capable Rivets.” Materials Research Proceedings, vol. 54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-153. short: 'P.K. Holtkamp, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2025-06-27T08:23:00Z date_updated: 2026-02-24T14:12:10Z department: - _id: '43' - _id: '157' doi: 10.21741/9781644903599-153 intvolume: ' 54' language: - iso: eng project: - _id: '130' name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Simulation of the joining process of graded hardened multi-range capable rivets type: conference user_id: '7850' volume: 54 year: '2025' ... --- _id: '64812' author: - first_name: Julia full_name: Hofmann, Julia id: '104312' last_name: Hofmann - first_name: Dominik full_name: Teutenberg, Dominik id: '537' last_name: Teutenberg - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Hofmann J, Teutenberg D, Meschut G. Methodenentwicklung zur numerischen Auslegung von Klebverbindungen mit lackierten Fügeteilen. In: DECHEMA, ed. 25. Kolloquium: Gemeinsame Forschung in Der Klebtechnik. ; 2025.' apa: 'Hofmann, J., Teutenberg, D., & Meschut, G. (2025). Methodenentwicklung zur numerischen Auslegung von Klebverbindungen mit lackierten Fügeteilen. In DECHEMA (Ed.), 25. Kolloquium: Gemeinsame Forschung in der Klebtechnik.' bibtex: '@inproceedings{Hofmann_Teutenberg_Meschut_2025, title={Methodenentwicklung zur numerischen Auslegung von Klebverbindungen mit lackierten Fügeteilen}, booktitle={25. Kolloquium: Gemeinsame Forschung in der Klebtechnik}, author={Hofmann, Julia and Teutenberg, Dominik and Meschut, Gerson}, editor={DECHEMA}, year={2025} }' chicago: 'Hofmann, Julia, Dominik Teutenberg, and Gerson Meschut. “Methodenentwicklung Zur Numerischen Auslegung von Klebverbindungen Mit Lackierten Fügeteilen.” In 25. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, edited by DECHEMA, 2025.' ieee: 'J. Hofmann, D. Teutenberg, and G. Meschut, “Methodenentwicklung zur numerischen Auslegung von Klebverbindungen mit lackierten Fügeteilen,” in 25. Kolloquium: Gemeinsame Forschung in der Klebtechnik, Köln, 2025.' mla: 'Hofmann, Julia, et al. “Methodenentwicklung Zur Numerischen Auslegung von Klebverbindungen Mit Lackierten Fügeteilen.” 25. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, edited by DECHEMA, 2025.' short: 'J. Hofmann, D. Teutenberg, G. Meschut, in: DECHEMA (Ed.), 25. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, 2025.' conference: end_date: 2025-02-19 location: Köln name: '25. Kolloquium: Gemeinsame Forschung in der Klebtechnik' start_date: 2025-02-18 corporate_editor: - DECHEMA date_created: 2026-03-03T08:26:48Z date_updated: 2026-03-03T08:55:23Z department: - _id: '157' language: - iso: eng publication: '25. Kolloquium: Gemeinsame Forschung in der Klebtechnik' status: public title: Methodenentwicklung zur numerischen Auslegung von Klebverbindungen mit lackierten Fügeteilen type: conference_abstract user_id: '104312' 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: '62009' author: - first_name: Lars full_name: Schmelzle, Lars last_name: Schmelzle - first_name: Marius full_name: Striewe, Marius id: '30228' last_name: Striewe - first_name: Julia full_name: Mergheim, Julia last_name: Mergheim - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Gunnar full_name: Possart, Gunnar last_name: Possart - first_name: Dominik full_name: Teutenberg, Dominik id: '537' last_name: Teutenberg citation: ama: Schmelzle L, Striewe M, Mergheim J, Meschut G, Possart G, Teutenberg D. Testing, modelling and parameter identification for adhesively bonded joints under the combined influence of temperature and strain rate. Journal of Adhesion Science and Technology. Published online 2025:1-24. doi:10.1080/01694243.2025.2569660 apa: Schmelzle, L., Striewe, M., Mergheim, J., Meschut, G., Possart, G., & Teutenberg, D. (2025). Testing, modelling and parameter identification for adhesively bonded joints under the combined influence of temperature and strain rate. Journal of Adhesion Science and Technology, 1–24. https://doi.org/10.1080/01694243.2025.2569660 bibtex: '@article{Schmelzle_Striewe_Mergheim_Meschut_Possart_Teutenberg_2025, title={Testing, modelling and parameter identification for adhesively bonded joints under the combined influence of temperature and strain rate}, DOI={10.1080/01694243.2025.2569660}, journal={Journal of Adhesion Science and Technology}, publisher={Informa UK Limited}, author={Schmelzle, Lars and Striewe, Marius and Mergheim, Julia and Meschut, Gerson and Possart, Gunnar and Teutenberg, Dominik}, year={2025}, pages={1–24} }' chicago: Schmelzle, Lars, Marius Striewe, Julia Mergheim, Gerson Meschut, Gunnar Possart, and Dominik Teutenberg. “Testing, Modelling and Parameter Identification for Adhesively Bonded Joints under the Combined Influence of Temperature and Strain Rate.” Journal of Adhesion Science and Technology, 2025, 1–24. https://doi.org/10.1080/01694243.2025.2569660. ieee: 'L. Schmelzle, M. Striewe, J. Mergheim, G. Meschut, G. Possart, and D. Teutenberg, “Testing, modelling and parameter identification for adhesively bonded joints under the combined influence of temperature and strain rate,” Journal of Adhesion Science and Technology, pp. 1–24, 2025, doi: 10.1080/01694243.2025.2569660.' mla: Schmelzle, Lars, et al. “Testing, Modelling and Parameter Identification for Adhesively Bonded Joints under the Combined Influence of Temperature and Strain Rate.” Journal of Adhesion Science and Technology, Informa UK Limited, 2025, pp. 1–24, doi:10.1080/01694243.2025.2569660. short: L. Schmelzle, M. Striewe, J. Mergheim, G. Meschut, G. Possart, D. Teutenberg, Journal of Adhesion Science and Technology (2025) 1–24. date_created: 2025-10-28T10:28:49Z date_updated: 2025-10-28T10:32:49Z department: - _id: '157' doi: 10.1080/01694243.2025.2569660 language: - iso: eng page: 1-24 publication: Journal of Adhesion Science and Technology publication_identifier: issn: - 0169-4243 - 1568-5616 publication_status: published publisher: Informa UK Limited quality_controlled: '1' status: public title: Testing, modelling and parameter identification for adhesively bonded joints under the combined influence of temperature and strain rate type: journal_article user_id: '30228' year: '2025' ... --- _id: '61524' author: - first_name: Jonathan-Markus full_name: Einwag, Jonathan-Markus last_name: Einwag - first_name: Christian full_name: Steinfelder, Christian last_name: Steinfelder - first_name: Sandro full_name: Wartzack, Sandro last_name: Wartzack - first_name: Alexander full_name: Brosius, Alexander last_name: Brosius - first_name: Stefan full_name: Goetz, Stefan last_name: Goetz citation: ama: 'Einwag J-M, Steinfelder C, Wartzack S, Brosius A, Goetz S. From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties. Journal of Manufacturing Processes. 2025;154:179-191. doi:10.1016/j.jmapro.2025.09.059' apa: 'Einwag, J.-M., Steinfelder, C., Wartzack, S., Brosius, A., & Goetz, S. (2025). From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties. Journal of Manufacturing Processes, 154, 179–191. https://doi.org/10.1016/j.jmapro.2025.09.059' bibtex: '@article{Einwag_Steinfelder_Wartzack_Brosius_Goetz_2025, title={From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties}, volume={154}, DOI={10.1016/j.jmapro.2025.09.059}, journal={Journal of Manufacturing Processes}, publisher={Elsevier BV}, author={Einwag, Jonathan-Markus and Steinfelder, Christian and Wartzack, Sandro and Brosius, Alexander and Goetz, Stefan}, year={2025}, pages={179–191} }' chicago: 'Einwag, Jonathan-Markus, Christian Steinfelder, Sandro Wartzack, Alexander Brosius, and Stefan Goetz. “From Simulation to Metamodel to Experiment: Evaluating the Prediction Accuracy of Polynomial Regression Models for Clinch Joint Properties.” Journal of Manufacturing Processes 154 (2025): 179–91. https://doi.org/10.1016/j.jmapro.2025.09.059.' ieee: 'J.-M. Einwag, C. Steinfelder, S. Wartzack, A. Brosius, and S. Goetz, “From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties,” Journal of Manufacturing Processes, vol. 154, pp. 179–191, 2025, doi: 10.1016/j.jmapro.2025.09.059.' mla: 'Einwag, Jonathan-Markus, et al. “From Simulation to Metamodel to Experiment: Evaluating the Prediction Accuracy of Polynomial Regression Models for Clinch Joint Properties.” Journal of Manufacturing Processes, vol. 154, Elsevier BV, 2025, pp. 179–91, doi:10.1016/j.jmapro.2025.09.059.' short: J.-M. Einwag, C. Steinfelder, S. Wartzack, A. Brosius, S. Goetz, Journal of Manufacturing Processes 154 (2025) 179–191. date_created: 2025-10-06T07:37:24Z date_updated: 2025-11-12T08:35:35Z department: - _id: '43' - _id: '157' doi: 10.1016/j.jmapro.2025.09.059 intvolume: ' 154' language: - iso: eng page: 179-191 project: - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' - _id: '132' name: TRR 285 - Project Area B - _id: '140' name: TRR 285 - Subproject B01 - _id: '144' name: TRR 285 - Subproject B05 publication: Journal of Manufacturing Processes publication_identifier: issn: - 1526-6125 publication_status: published publisher: Elsevier BV status: public title: 'From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties' type: journal_article user_id: '107109' volume: 154 year: '2025' ... --- _id: '62211' abstract: - lang: ger text: Zur Steigerung der Ressourceneffizienz technischer Komponenten sind neben dem Leichtbau insbesondere neuartige Fertigungstechnologien und Prozessketten mit geschlossenen Stoffkreisläufen von großer Bedeutung. Im Beitrag werden am Beispiel einer Demonstratorstruktur aus hybriden Leichtbauprofilen (Aluminium und faserverstärktes Polyamid) technisch-technologische Lösungsoptionen für die gesamte Prozesskette inklusive des Recyclings vorgestellt und in Pilotversuchen bewertet. author: - first_name: Daniel full_name: Weck, Daniel last_name: Weck - first_name: Michael full_name: Müller-Pabel, Michael last_name: Müller-Pabel - first_name: Thomas full_name: Krampitz, Thomas last_name: Krampitz - first_name: Christine full_name: Hecker, Christine last_name: Hecker - first_name: Alessandro full_name: Selvaggio, Alessandro last_name: Selvaggio - first_name: Julian full_name: Gilich, Julian id: '44391' last_name: Gilich - first_name: Maik full_name: Gude, Maik last_name: Gude - first_name: Holger full_name: Lieberwirth, Holger last_name: Lieberwirth - first_name: A. Erman full_name: Tekkaya, A. Erman last_name: Tekkaya - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Weck D, Müller-Pabel M, Krampitz T, et al. Ressourceneffiziente Fertigung von Leichtbaustrukturen. Werkstattstechnik online. 2025;115(10):708-717. doi:10.37544/1436-4980-2025-10-12 apa: Weck, D., Müller-Pabel, M., Krampitz, T., Hecker, C., Selvaggio, A., Gilich, J., Gude, M., Lieberwirth, H., Tekkaya, A. E., & Meschut, G. (2025). Ressourceneffiziente Fertigung von Leichtbaustrukturen. Werkstattstechnik online, 115(10), 708–717. https://doi.org/10.37544/1436-4980-2025-10-12 bibtex: '@article{Weck_Müller-Pabel_Krampitz_Hecker_Selvaggio_Gilich_Gude_Lieberwirth_Tekkaya_Meschut_2025, title={Ressourceneffiziente Fertigung von Leichtbaustrukturen}, volume={115}, DOI={10.37544/1436-4980-2025-10-12}, number={10}, journal={Werkstattstechnik online}, publisher={VDI Fachmedien GmbH and Co. KG}, author={Weck, Daniel and Müller-Pabel, Michael and Krampitz, Thomas and Hecker, Christine and Selvaggio, Alessandro and Gilich, Julian and Gude, Maik and Lieberwirth, Holger and Tekkaya, A. Erman and Meschut, Gerson}, year={2025}, pages={708–717} }' chicago: 'Weck, Daniel, Michael Müller-Pabel, Thomas Krampitz, Christine Hecker, Alessandro Selvaggio, Julian Gilich, Maik Gude, Holger Lieberwirth, A. Erman Tekkaya, and Gerson Meschut. “Ressourceneffiziente Fertigung von Leichtbaustrukturen.” Werkstattstechnik online 115, no. 10 (2025): 708–17. https://doi.org/10.37544/1436-4980-2025-10-12.' ieee: 'D. Weck et al., “Ressourceneffiziente Fertigung von Leichtbaustrukturen,” Werkstattstechnik online, vol. 115, no. 10, pp. 708–717, 2025, doi: 10.37544/1436-4980-2025-10-12.' mla: Weck, Daniel, et al. “Ressourceneffiziente Fertigung von Leichtbaustrukturen.” Werkstattstechnik online, vol. 115, no. 10, VDI Fachmedien GmbH and Co. KG, 2025, pp. 708–17, doi:10.37544/1436-4980-2025-10-12. short: D. Weck, M. Müller-Pabel, T. Krampitz, C. Hecker, A. Selvaggio, J. Gilich, M. Gude, H. Lieberwirth, A.E. Tekkaya, G. Meschut, Werkstattstechnik online 115 (2025) 708–717. date_created: 2025-11-17T08:36:04Z date_updated: 2025-11-17T08:41:59Z department: - _id: '157' doi: 10.37544/1436-4980-2025-10-12 intvolume: ' 115' issue: '10' language: - iso: ger page: 708-717 publication: Werkstattstechnik online publication_status: published publisher: VDI Fachmedien GmbH and Co. KG quality_controlled: '1' status: public title: Ressourceneffiziente Fertigung von Leichtbaustrukturen type: journal_article user_id: '44391' volume: 115 year: '2025' ... --- _id: '63108' abstract: - lang: eng text: In the context of decarbonization initiatives, the repairability and recyclability of components have become a major concern in various industrial sectors, particularly for resource-intensive components. The development of innovative bonding and debonding processes that must adhere to the stringent mechanical specifications of the manufacturers and facilitate their efficient disassembly is a major issue faced in the implementation of a sustainable circular economy. Although adhesively bonded joints satisfy the stringent requirements for mechanical performance, they present several challenges during the repair and recycling process. Solvolytically debondable epoxy resin adhesives may be employed to overcome this issue. In this study, we aim to conduct an exploratory feasibility study on the application of such chemical debonding mechanisms within an adhesive bond as well as to systematically analyse and evaluate the suitability of such adhesive systems for various applications. To this end, we employed various thermo-analytical methods and quasi-static tensile tests to characterise the mechanical adhesive and joint properties of two solvolytically debondable adhesive systems. Furthermore, we analysed the debondability of the adhesive joints and evaluated their feasibility in an industrial environment. The results indicate considerable application potential for solvolytically debondable adhesives, along with further development steps currently required. author: - first_name: Julian full_name: Gilich, Julian id: '44391' last_name: Gilich - first_name: Janika full_name: Kroos, Janika id: '50198' last_name: Kroos - first_name: Dominik full_name: Teutenberg, Dominik id: '537' last_name: Teutenberg - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Gilich J, Kroos J, Teutenberg D, Meschut G. Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling. The Journal of Adhesion. Published online 2025:1-26. doi:10.1080/00218464.2025.2600590 apa: Gilich, J., Kroos, J., Teutenberg, D., & Meschut, G. (2025). Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling. The Journal of Adhesion, 1–26. https://doi.org/10.1080/00218464.2025.2600590 bibtex: '@article{Gilich_Kroos_Teutenberg_Meschut_2025, title={Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling}, DOI={10.1080/00218464.2025.2600590}, journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Gilich, Julian and Kroos, Janika and Teutenberg, Dominik and Meschut, Gerson}, year={2025}, pages={1–26} }' chicago: Gilich, Julian, Janika Kroos, Dominik Teutenberg, and Gerson Meschut. “Solvolytically Debondable Adhesive Systems – Potentials and Challenges for Repair and Recycling.” The Journal of Adhesion, 2025, 1–26. https://doi.org/10.1080/00218464.2025.2600590. ieee: 'J. Gilich, J. Kroos, D. Teutenberg, and G. Meschut, “Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling,” The Journal of Adhesion, pp. 1–26, 2025, doi: 10.1080/00218464.2025.2600590.' mla: Gilich, Julian, et al. “Solvolytically Debondable Adhesive Systems – Potentials and Challenges for Repair and Recycling.” The Journal of Adhesion, Informa UK Limited, 2025, pp. 1–26, doi:10.1080/00218464.2025.2600590. short: J. Gilich, J. Kroos, D. Teutenberg, G. Meschut, The Journal of Adhesion (2025) 1–26. date_created: 2025-12-16T07:50:36Z date_updated: 2025-12-16T07:53:52Z department: - _id: '157' doi: 10.1080/00218464.2025.2600590 language: - iso: eng page: 1-26 publication: The Journal of Adhesion publication_identifier: issn: - 0021-8464 - 1545-5823 publication_status: published publisher: Informa UK Limited quality_controlled: '1' status: public title: Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling type: journal_article user_id: '44391' 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 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: '60837' abstract: - lang: eng text: "In light of growing demands for resource efficiency and sustainability in vehicle engineering, the environmentally compatible separation of structural adhesive joints is gaining increasing relevance. This study presents a comparative analysis of two physically based debonding methods: the established hot-air process and a cryogenic cold process based on liquid nitrogen (LN2). The primary objective is to assess the ecological impact and process-related sustainability of both approaches.\r\nExperimental investigations were conducted on a component-representative triple-sheet structure that simulates common automotive flange joints. Thermal input was applied either by convective heating using a hot air gun or by direct cooling through a contact-based LN2 tool. The resulting temperature profiles were recorded using spatially distributed thermocouples. Subsequently, the outer panel was selectively debonded to replicate a repair scenario, and the mechanical integrity of the remaining adhesive joint was evaluated through Mode I testing of L-shaped specimens. Process data served as input for an Life Cycle Assessment (LCA) according to DIN EN ISO 14040.\r\nThe cryogenic method achieved a 40% reduction in carbon footprint compared to the hot-air process (0.337 kg vs. 0.559 kg CO2-equivalents), primarily due to its shorter process time and more efficient heat transfer. While the hot-air method’s impact is mainly driven by electrical energy use, that of the cold method stems from cryogenic media consumption. Notwithstanding certain disadvantages in specific impact categories, the LN2-based process exhibits a superior overall ecological performance and signifies a promising solution for repair- and recycling-oriented adhesive separation in structural vehicle applications." article_number: '100332' article_type: original author: - first_name: Alex full_name: Jordan, Alex id: '62451' last_name: Jordan orcid: 0009-0007-9546-6071 - first_name: Lucas full_name: Hermelingmeier, Lucas id: '58649' last_name: Hermelingmeier - first_name: Julian full_name: Gilich, Julian id: '44391' last_name: Gilich - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Marco Sebastian full_name: De Santis, Marco Sebastian id: '52239' last_name: De Santis - first_name: Alexander full_name: Schlüter, Alexander id: '103302' last_name: Schlüter orcid: 0000-0002-2569-1624 citation: ama: Jordan A, Hermelingmeier L, Gilich J, Meschut G, De Santis MS, Schlüter A. Comparison of the economic efficiency and sustainability of two debonding processes for structurally bonded sills. Journal of Advanced Joining Processes. 2025;12. doi:10.1016/j.jajp.2025.100332 apa: Jordan, A., Hermelingmeier, L., Gilich, J., Meschut, G., De Santis, M. S., & Schlüter, A. (2025). Comparison of the economic efficiency and sustainability of two debonding processes for structurally bonded sills. Journal of Advanced Joining Processes, 12, Article 100332. https://doi.org/10.1016/j.jajp.2025.100332 bibtex: '@article{Jordan_Hermelingmeier_Gilich_Meschut_De Santis_Schlüter_2025, title={Comparison of the economic efficiency and sustainability of two debonding processes for structurally bonded sills}, volume={12}, DOI={10.1016/j.jajp.2025.100332}, number={100332}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier}, author={Jordan, Alex and Hermelingmeier, Lucas and Gilich, Julian and Meschut, Gerson and De Santis, Marco Sebastian and Schlüter, Alexander}, year={2025} }' chicago: Jordan, Alex, Lucas Hermelingmeier, Julian Gilich, Gerson Meschut, Marco Sebastian De Santis, and Alexander Schlüter. “Comparison of the Economic Efficiency and Sustainability of Two Debonding Processes for Structurally Bonded Sills.” Journal of Advanced Joining Processes 12 (2025). https://doi.org/10.1016/j.jajp.2025.100332. ieee: 'A. Jordan, L. Hermelingmeier, J. Gilich, G. Meschut, M. S. De Santis, and A. Schlüter, “Comparison of the economic efficiency and sustainability of two debonding processes for structurally bonded sills,” Journal of Advanced Joining Processes, vol. 12, Art. no. 100332, 2025, doi: 10.1016/j.jajp.2025.100332.' mla: Jordan, Alex, et al. “Comparison of the Economic Efficiency and Sustainability of Two Debonding Processes for Structurally Bonded Sills.” Journal of Advanced Joining Processes, vol. 12, 100332, Elsevier, 2025, doi:10.1016/j.jajp.2025.100332. short: A. Jordan, L. Hermelingmeier, J. Gilich, G. Meschut, M.S. De Santis, A. Schlüter, Journal of Advanced Joining Processes 12 (2025). date_created: 2025-07-30T11:04:28Z date_updated: 2026-01-06T08:22:54Z department: - _id: '157' - _id: '876' - _id: '321' - _id: '9' doi: 10.1016/j.jajp.2025.100332 intvolume: ' 12' keyword: - Sustainable debonding - Structural adhesives - Sustainable joining technologies - Life Cycle Assessment (LCA) - Automotive repair process - Economically efficient debonding language: - iso: eng main_file_link: - open_access: '1' url: https://www.sciencedirect.com/science/article/pii/S2666330925000536?via%3Dihub oa: '1' publication: Journal of Advanced Joining Processes publication_identifier: issn: - 2666-3309 publication_status: published publisher: Elsevier quality_controlled: '1' status: public title: Comparison of the economic efficiency and sustainability of two debonding processes for structurally bonded sills type: journal_article user_id: '103302' volume: 12 year: '2025' ... --- _id: '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: '58971' abstract: - lang: ger text: Ein wichtiger Bestandteil jeder Fahrzeugkarosserie sind Massebolzen, die zur Herstellung der elektrischen Schnittstelle zwischen der leitfähigen Karosserie und dem Bordnetz dienen. Eine zuverlässige Signal- und Leistungsübertragung erfor-dert minimale Übergangswiderstände an den elektrischen Anschlusspunkten des Massebolzensystems und muss ver-schiedenen Betriebs- und Umweltbedingungen über die gesamte Lebensdauer standhalten. Der Übergangswiderstand wird von mehreren Faktoren beeinflusst (z. B. Verbindungsgeometrie, Kontaktkraft, Temperatur, Werkstoff) und erhöht sich im Laufe der Betriebszeit infolge unterschiedlicher Alterungsmechanismen. Dieser Beitrag befasst sich mit der elektrischen Charakterisierung von Massebolzen aus AlMg5 mit einer ZnNi-beschichteten Stahl-Hutmutter auf einem AlMg3-Blech. Es werden ausgewählte fertigungs-, montage- und betriebsbedingte Einflussgrößen auf den elektrischen Verbindungs-widerstand analysiert. Als wirtschaftliche und etablierte Fügetechnologie kommt das Lichtbogenbolzenschweißen mit Hubzündung zum Einsatz. Zur Herstellung qualitativ hochwertiger Schweißverbindungen wird mittels einer statistischen Versuchsplanung ein geeigneter Referenzparametersatz ermittelt. Weiterhin wird der montagebedingte Einfluss anhand des Mutter-Anziehmoments bei der Kabelschuhmontage auf den elektrischen Verbindungswiderstand untersucht. Zusätzlich werden die Strombelastbarkeit und der maximal zulässige Betriebsbereich des Massebolzensystems ermittelt. article_type: original author: - first_name: Viktor full_name: Haak, Viktor id: '60398' last_name: Haak - first_name: Keke full_name: Yang, Keke id: '65085' last_name: Yang orcid: 0000-0001-9201-9304 - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Haak V, Yang K, Meschut G. Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen. Schweißen und Schneiden. 2025;3. doi:10.53192/SUS20250336 apa: Haak, V., Yang, K., & Meschut, G. (2025). Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen. Schweißen und Schneiden, 3. https://doi.org/10.53192/SUS20250336 bibtex: '@article{Haak_Yang_Meschut_2025, title={Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen}, volume={3}, DOI={10.53192/SUS20250336}, journal={Schweißen und Schneiden}, publisher={DVS-Media}, author={Haak, Viktor and Yang, Keke and Meschut, Gerson}, year={2025} }' chicago: Haak, Viktor, Keke Yang, and Gerson Meschut. “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen.” Schweißen und Schneiden 3 (2025). https://doi.org/10.53192/SUS20250336. ieee: 'V. Haak, K. Yang, and G. Meschut, “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen,” Schweißen und Schneiden, vol. 3, 2025, doi: 10.53192/SUS20250336.' mla: Haak, Viktor, et al. “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen.” Schweißen und Schneiden, vol. 3, DVS-Media, 2025, doi:10.53192/SUS20250336. short: V. Haak, K. Yang, G. Meschut, Schweißen und Schneiden 3 (2025). date_created: 2025-03-12T09:41:06Z date_updated: 2025-03-12T09:41:39Z department: - _id: '157' doi: 10.53192/SUS20250336 intvolume: ' 3' language: - iso: ger main_file_link: - url: https://www.schweissenundschneiden.de/artikel/einfluss-von-schweissparametern-und-montageverfahren-auf-die-elektrische-kontaktguete-von-aluminium-massebolzen publication: Schweißen und Schneiden publication_status: published publisher: DVS-Media quality_controlled: '1' status: public title: Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen type: journal_article user_id: '65085' volume: 3 year: '2025' ... --- _id: '60441' abstract: - lang: eng text: Conventional mechanical joining processes are typically rigid in their tool systems and can only react to changing process and disturbance variables to a limited extent. At the same time, various industries are increasingly trending towards multi-material systems consisting of parts with varying geometric and mechanical properties. Due to the varying properties, rigid mechanical joining processes require sampling procedures and periodic changes of tool components or auxiliary joining parts. Consequently, research is focusing on versatile mechanical joining processes that allow increased control by modifying the process parameters. Two processes based on self-piercing riveting can achieve a significant increase in process influence possibilities through a multi-linear actuator as versatile self-piercing riveting (V-SPR) and a tumbling superimposed actuator as tumbling self-piercing riveting (T-SPR). Initial research into V-SPR has shown that this process can be used to achieve a higher variation in overall package thickness by adapting the rivet geometry and using multiple linear actuators. The T-SPR process also enables increased material flow control by means of targeted compression of the rivet using the tumbling actuator, thereby extending the range of joints that can be manufactured. Based on these two processes, a combination of the two mechanisms of action is to be developed. article_number: '01069' author: - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: Simon full_name: Wituschek, Simon id: '83423' last_name: Wituschek - first_name: Michael full_name: Lechner, Michael last_name: Lechner - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Holtkamp PK, Wituschek S, Lechner M, Meschut G. Integration of multiple-linear and tumbling kinematics into self-piercing riveting. MATEC Web of Conferences. 2025;408. doi:10.1051/matecconf/202540801069 apa: Holtkamp, P. K., Wituschek, S., Lechner, M., & Meschut, G. (2025). Integration of multiple-linear and tumbling kinematics into self-piercing riveting. MATEC Web of Conferences, 408, Article 01069. https://doi.org/10.1051/matecconf/202540801069 bibtex: '@article{Holtkamp_Wituschek_Lechner_Meschut_2025, title={Integration of multiple-linear and tumbling kinematics into self-piercing riveting}, volume={408}, DOI={10.1051/matecconf/202540801069}, number={01069}, journal={MATEC Web of Conferences}, publisher={EDP Sciences}, author={Holtkamp, Pia Katharina and Wituschek, Simon and Lechner, Michael and Meschut, Gerson}, year={2025} }' chicago: Holtkamp, Pia Katharina, Simon Wituschek, Michael Lechner, and Gerson Meschut. “Integration of Multiple-Linear and Tumbling Kinematics into Self-Piercing Riveting.” MATEC Web of Conferences 408 (2025). https://doi.org/10.1051/matecconf/202540801069. ieee: 'P. K. Holtkamp, S. Wituschek, M. Lechner, and G. Meschut, “Integration of multiple-linear and tumbling kinematics into self-piercing riveting,” MATEC Web of Conferences, vol. 408, Art. no. 01069, 2025, doi: 10.1051/matecconf/202540801069.' mla: Holtkamp, Pia Katharina, et al. “Integration of Multiple-Linear and Tumbling Kinematics into Self-Piercing Riveting.” MATEC Web of Conferences, vol. 408, 01069, EDP Sciences, 2025, doi:10.1051/matecconf/202540801069. short: P.K. Holtkamp, S. Wituschek, M. Lechner, G. Meschut, MATEC Web of Conferences 408 (2025). date_created: 2025-06-27T08:27:42Z date_updated: 2025-06-27T08:34:46Z department: - _id: '43' - _id: '157' doi: 10.1051/matecconf/202540801069 intvolume: ' 408' language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' publication: MATEC Web of Conferences publication_identifier: issn: - 2261-236X publication_status: published publisher: EDP Sciences quality_controlled: '1' status: public title: Integration of multiple-linear and tumbling kinematics into self-piercing riveting type: journal_article user_id: '44935' volume: 408 year: '2025' ... --- _id: '60439' abstract: - lang: eng text: Abstract. Mechanical joints are traditionally analyzed through destructive micrograph analysis, which may compromise internal geometry and morphology, as evidenced by radial cracks in semi-tubular self-pierce riveting. In contrast, industrial X-ray computed tomography (XCT) offers a non-destructive method for component diagnosis, providing volumetric insights without damaging the sample and enabling dimensional measurement. The DFG-funded Collaborative Research Center TRR 285 is exploring XCT's application in assessing mechanical joinability across various joining processes and materials, particularly in multi-material systems like steel-aluminum joints. XCT faces challenges in accurately capturing multi-material compositions, leading to artifacts that complicate interface detection. This research aims to validate XCT for joint investigations, yielding quantitative characteristics that surpass those from traditional micrograph analysis. author: - first_name: M. full_name: Lechner, M. last_name: Lechner - first_name: Thomas full_name: Borgert, Thomas id: '83141' last_name: Borgert - first_name: Matthias full_name: Busch, Matthias id: '83421' last_name: Busch orcid: https://orcid.org/0000-0002-8456-3374 - first_name: A. full_name: Harms, A. last_name: Harms - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: D. full_name: Römisch, D. last_name: Römisch - first_name: Simon full_name: Wituschek, Simon id: '83423' last_name: Wituschek - first_name: Fabian full_name: Kappe, Fabian id: '66459' last_name: Kappe citation: ama: 'Lechner M, Borgert T, Busch M, et al. Non-destructive testing in versatile joining processes. In: Materials Research Proceedings. Vol 52. Materials Research Forum LLC; 2025. doi:10.21741/9781644903551-12' apa: Lechner, M., Borgert, T., Busch, M., Harms, A., Holtkamp, P. K., Römisch, D., Wituschek, S., & Kappe, F. (2025). Non-destructive testing in versatile joining processes. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-12 bibtex: '@inproceedings{Lechner_Borgert_Busch_Harms_Holtkamp_Römisch_Wituschek_Kappe_2025, title={Non-destructive testing in versatile joining processes}, volume={52}, DOI={10.21741/9781644903551-12}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Lechner, M. and Borgert, Thomas and Busch, Matthias and Harms, A. and Holtkamp, Pia Katharina and Römisch, D. and Wituschek, Simon and Kappe, Fabian}, year={2025} }' chicago: Lechner, M., Thomas Borgert, Matthias Busch, A. Harms, Pia Katharina Holtkamp, D. Römisch, Simon Wituschek, and Fabian Kappe. “Non-Destructive Testing in Versatile Joining Processes.” In Materials Research Proceedings, Vol. 52. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-12. ieee: 'M. Lechner et al., “Non-destructive testing in versatile joining processes,” in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-12.' mla: Lechner, M., et al. “Non-Destructive Testing in Versatile Joining Processes.” Materials Research Proceedings, vol. 52, Materials Research Forum LLC, 2025, doi:10.21741/9781644903551-12. short: 'M. Lechner, T. Borgert, M. Busch, A. Harms, P.K. Holtkamp, D. Römisch, S. Wituschek, F. Kappe, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2025-06-27T07:56:32Z date_updated: 2025-06-27T08:17:00Z department: - _id: '43' - _id: '157' doi: 10.21741/9781644903551-12 intvolume: ' 52' language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '145' name: 'TRR 285 – C01: TRR 285 - Subproject C01' - _id: '147' name: 'TRR 285 – C03: TRR 285 - Subproject C03' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' - _id: '149' name: 'TRR 285 – C05: TRR 285 - Subproject C05' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Non-destructive testing in versatile joining processes type: conference user_id: '44935' volume: 52 year: '2025' ... --- _id: '60592' abstract: - lang: eng text: This study investigates the occurrence and mitigation of liquid metal embrittlement occurring during resistance spot welding in deep-drawn automotive components, specifically focusing on an S-Rail made from advanced high-strength steel. A simulation-based liquid metal embrittlement risk criterion based on local major component stresses was established and used to quantify and compare liquid metal embrittlement risks between different tests. Experimental and numerical analyses were conducted, revealing that springback significantly impacts liquid metal embrittlement formation. Adjustments in electrode geometry and hold time post-welding were found to mitigate liquid metal embrittlement risks. The effects of stack-up configuration and related parameter settings on liquid metal embrittlement occurrence were identified and liquid metal embrittlement was effectively prevented across both stack-up configurations. These findings advance the understanding of liquid metal embrittlement mechanisms and provide practical approaches to enhance the spot weld quality in AHSS-based body-in-whites. article_type: original author: - first_name: Max full_name: Biegler, Max last_name: Biegler - first_name: Keke full_name: Yang, Keke id: '65085' last_name: Yang orcid: 0000-0001-9201-9304 - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Michael full_name: Rethmeier, Michael last_name: Rethmeier citation: ama: Biegler M, Yang K, Meschut G, Rethmeier M. Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components. Science and Technology of Welding and Joining. Published online 2025. doi:10.1177/13621718251340452 apa: Biegler, M., Yang, K., Meschut, G., & Rethmeier, M. (2025). Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components. Science and Technology of Welding and Joining. https://doi.org/10.1177/13621718251340452 bibtex: '@article{Biegler_Yang_Meschut_Rethmeier_2025, title={Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components}, DOI={10.1177/13621718251340452}, journal={Science and Technology of Welding and Joining}, publisher={SAGE Publications}, author={Biegler, Max and Yang, Keke and Meschut, Gerson and Rethmeier, Michael}, year={2025} }' chicago: Biegler, Max, Keke Yang, Gerson Meschut, and Michael Rethmeier. “Occurrence and Avoidance of Liquid Metal Embrittlement in Resistance Spot Welding of Springback-Afflicted Deep-Drawn Components.” Science and Technology of Welding and Joining, 2025. https://doi.org/10.1177/13621718251340452. ieee: 'M. Biegler, K. Yang, G. Meschut, and M. Rethmeier, “Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components,” Science and Technology of Welding and Joining, 2025, doi: 10.1177/13621718251340452.' mla: Biegler, Max, et al. “Occurrence and Avoidance of Liquid Metal Embrittlement in Resistance Spot Welding of Springback-Afflicted Deep-Drawn Components.” Science and Technology of Welding and Joining, SAGE Publications, 2025, doi:10.1177/13621718251340452. short: M. Biegler, K. Yang, G. Meschut, M. Rethmeier, Science and Technology of Welding and Joining (2025). date_created: 2025-07-12T22:44:20Z date_updated: 2025-07-14T08:38:19Z ddc: - '620' department: - _id: '157' doi: 10.1177/13621718251340452 file: - access_level: closed content_type: application/pdf creator: kekeyang date_created: 2025-07-14T08:37:40Z date_updated: 2025-07-14T08:37:40Z file_id: '60599' file_name: KYA_VÖ7.pdf file_size: 4534008 relation: main_file success: 1 file_date_updated: 2025-07-14T08:37:40Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: Science and Technology of Welding and Joining publication_identifier: issn: - 1362-1718 - 1743-2936 publication_status: published publisher: SAGE Publications quality_controlled: '1' related_material: link: - relation: confirmation url: 10.1177/13621718251340452 status: public title: Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components type: journal_article user_id: '65085' year: '2025' ... --- _id: '58807' abstract: - lang: eng text: "One of the most important strategies for reducing CO2 emissions in the mobility sector is lightweight construction. In particular, the car body offers several opportunities for weight reduction. Multi-material designs are increasingly being applied to select the most suitable material for the respective load and ultimately achieve synergy effects. For example, aluminium castings are used at the nodes of a spaceframe body. Subsequently, these are joined with profiles to form the bodyshell. To join different materials mechanical joining techniques, such as semi-tubular self-piercing riveting, are deployed. According to the current state of the art, cracks occur in the aluminium castings during the mechanical joining process as a result of the high degree of deformation. Although the aluminium casting alloys of the AlSi-system exhibit low ductility, these alloys reveal excellent castability. In particular, the ability to cast thin structural parts is enabled by the low liquidus point of the near eutectic aluminium casting alloys.\r\nThis study addresses the mechanical joining properties of the near eutectic aluminium casting alloy AlSi12, depending on different microstructures. These are achieved by annealing processes and modifying agents. Through an adapted heat treatment, the previously lamellar morphology can be transformed into a globular morphology, which leads to increased ductility and prevents the formation of cracks during the self-piercing riveting (SPR). The joinability is investigated using different die geometries, whereas the joint formation is analysed regarding crack initiation. To evaluate the increased ductility, microstructural and mechanical tests are performed and finally, a microstructure-joinability correlation is established." article_type: original author: - first_name: Moritz full_name: Neuser, Moritz id: '32340' last_name: Neuser - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: Kay-Peter full_name: Hoyer, Kay-Peter id: '48411' last_name: Hoyer - first_name: Fabian full_name: Kappe, Fabian id: '66459' last_name: Kappe - first_name: Safak full_name: Yildiz, Safak last_name: Yildiz - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Mirko full_name: Schaper, Mirko id: '43720' last_name: Schaper citation: ama: 'Neuser M, Holtkamp PK, Hoyer K-P, et al. Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials: Design and Applications, Part L. Published online 2025. doi:10.1177/14644207251319922' apa: 'Neuser, M., Holtkamp, P. K., Hoyer, K.-P., Kappe, F., Yildiz, S., Bobbert, M., Meschut, G., & Schaper, M. (2025). Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials: Design and Applications, Part L. 5th International Conference on Materials Design and Applications 2024, Porto, Portugal. https://doi.org/10.1177/14644207251319922' bibtex: '@article{Neuser_Holtkamp_Hoyer_Kappe_Yildiz_Bobbert_Meschut_Schaper_2025, title={Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12}, DOI={10.1177/14644207251319922}, journal={The Journal of Materials: Design and Applications, Part L}, publisher={Sage Publications}, author={Neuser, Moritz and Holtkamp, Pia Katharina and Hoyer, Kay-Peter and Kappe, Fabian and Yildiz, Safak and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko}, year={2025} }' chicago: 'Neuser, Moritz, Pia Katharina Holtkamp, Kay-Peter Hoyer, Fabian Kappe, Safak Yildiz, Mathias Bobbert, Gerson Meschut, and Mirko Schaper. “Mechanical Properties and Joinability of the Near-Eutectic Aluminium Casting Alloy AlSi12.” The Journal of Materials: Design and Applications, Part L, 2025. https://doi.org/10.1177/14644207251319922.' ieee: 'M. Neuser et al., “Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12,” The Journal of Materials: Design and Applications, Part L, 2025, doi: 10.1177/14644207251319922.' mla: 'Neuser, Moritz, et al. “Mechanical Properties and Joinability of the Near-Eutectic Aluminium Casting Alloy AlSi12.” The Journal of Materials: Design and Applications, Part L, Sage Publications, 2025, doi:10.1177/14644207251319922.' short: 'M. Neuser, P.K. Holtkamp, K.-P. Hoyer, F. Kappe, S. Yildiz, M. Bobbert, G. Meschut, M. Schaper, The Journal of Materials: Design and Applications, Part L (2025).' conference: end_date: 2024-07-05 location: Porto, Portugal name: 5th International Conference on Materials Design and Applications 2024 start_date: 2024-07-04 date_created: 2025-02-24T10:25:31Z date_updated: 2026-05-12T12:13:31Z department: - _id: '43' - _id: '158' - _id: '157' - _id: '9' - _id: '321' doi: 10.1177/14644207251319922 has_accepted_license: '1' keyword: - aluminium - casting - microstructure - joinability - self-piercing riveting language: - iso: eng project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '136' name: 'TRR 285 – A02: TRR 285 - Subproject A02' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: 'The Journal of Materials: Design and Applications, Part L' publication_status: published publisher: Sage Publications quality_controlled: '1' status: public title: Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12 type: journal_article user_id: '7850' year: '2025' ... --- _id: '60290' abstract: - lang: eng text: The constantly increasing demand for climate protection and resource conservation requires innovative and versatile joining processes that improve adaptability to the joining task and robustness to enable flexible manufacturing on a production line. Therefore, the versatile SPR (V-SPR) and tumbling SPR (T-SPR) were developed. Using the example of a mixed material combination HCT590X+Z (t0 = 1.0 mm) / EN AW-6014 T4 (t0 = 2.0 mm), these processes were examined and compared with regard to the binding mechanisms form closure and force closure using micrographs, non-destructive resistance measurements and destructive torsion tests. For this purpose, a new sample geometry was defined, and the methods were adapted to the SPR process variants. author: - first_name: Stephan full_name: Lüder, Stephan last_name: Lüder - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: Simon full_name: Wituschek, Simon last_name: Wituschek - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Michael full_name: Lechner, Michael last_name: Lechner - first_name: Hans Christian full_name: Schmale, Hans Christian last_name: Schmale citation: ama: 'Lüder S, Holtkamp PK, Wituschek S, et al. Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting. In: Meschut G, Bobbert M, Duflou J, et al., eds. Materials Research Proceedings. Vol 52. Sheet Metal 2025. Materials Research Forum LLC; 2025:101-108. doi:10.21741/9781644903551-13' apa: Lüder, S., Holtkamp, P. K., Wituschek, S., Bobbert, M., Meschut, G., Lechner, M., & Schmale, H. C. (2025). Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting. In G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. A. F. Martins, M. Merklein, & F. Micari (Eds.), Materials Research Proceedings (Vol. 52, pp. 101–108). Materials Research Forum LLC. https://doi.org/10.21741/9781644903551-13 bibtex: '@inproceedings{Lüder_Holtkamp_Wituschek_Bobbert_Meschut_Lechner_Schmale_2025, place={Millersville}, series={Sheet Metal 2025}, title={Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting}, volume={52}, DOI={10.21741/9781644903551-13}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Lüder, Stephan and Holtkamp, Pia Katharina and Wituschek, Simon and Bobbert, Mathias and Meschut, Gerson and Lechner, Michael and Schmale, Hans Christian}, editor={Meschut, Gerson and Bobbert, Mathias and Duflou, Joost and Fratini, Livan and Hagenah, Hinnerk and Martins, Paulo A. F. and Merklein, Marion and Micari, Fabrizio}, year={2025}, pages={101–108}, collection={Sheet Metal 2025} }' chicago: 'Lüder, Stephan, Pia Katharina Holtkamp, Simon Wituschek, Mathias Bobbert, Gerson Meschut, Michael Lechner, and Hans Christian Schmale. “Analysis of the Binding Mechanisms Depending on Versatile Process Variants of Self-Piercing Riveting.” In Materials Research Proceedings, edited by Gerson Meschut, Mathias Bobbert, Joost Duflou, Livan Fratini, Hinnerk Hagenah, Paulo A. F. Martins, Marion Merklein, and Fabrizio Micari, 52:101–8. Sheet Metal 2025. Millersville: Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-13.' ieee: 'S. Lüder et al., “Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting,” in Materials Research Proceedings, Paderborn, 2025, vol. 52, pp. 101–108, doi: 10.21741/9781644903551-13.' mla: Lüder, Stephan, et al. “Analysis of the Binding Mechanisms Depending on Versatile Process Variants of Self-Piercing Riveting.” Materials Research Proceedings, edited by Gerson Meschut et al., vol. 52, Materials Research Forum LLC, 2025, pp. 101–08, doi:10.21741/9781644903551-13. short: 'S. Lüder, P.K. Holtkamp, S. Wituschek, M. Bobbert, G. Meschut, M. Lechner, H.C. Schmale, in: G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P.A.F. Martins, M. Merklein, F. Micari (Eds.), Materials Research Proceedings, Materials Research Forum LLC, Millersville, 2025, pp. 101–108.' conference: end_date: 2025-04-03 location: Paderborn name: 21st International Conference on Sheet Metal start_date: 2025-04-01 date_created: 2025-06-20T10:13:22Z date_updated: 2026-05-12T12:12:36Z department: - _id: '630' - _id: '43' - _id: '157' doi: 10.21741/9781644903551-13 editor: - first_name: Gerson full_name: Meschut, Gerson last_name: Meschut - first_name: Mathias full_name: Bobbert, Mathias last_name: Bobbert - first_name: Joost full_name: Duflou, Joost last_name: Duflou - first_name: Livan full_name: Fratini, Livan last_name: Fratini - first_name: Hinnerk full_name: Hagenah, Hinnerk last_name: Hagenah - first_name: Paulo A. F. full_name: Martins, Paulo A. F. last_name: Martins - first_name: Marion full_name: Merklein, Marion last_name: Merklein - first_name: Fabrizio full_name: Micari, Fabrizio last_name: Micari extern: '1' intvolume: ' 52' keyword: - Joining - Self-Piercing Riveting - Sheet Metal language: - iso: eng page: 101 - 108 place: Millersville project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '138' name: 'TRR 285 – A04: TRR 285 - Subproject A04' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' series_title: Sheet Metal 2025 status: public title: Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting type: conference user_id: '7850' volume: 52 year: '2025' ...