[{"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>.","short":"K. Yang, B. El-Sari, V. Olfert, Z. Wang, M. Biegler, M. Rethmeier, G. Meschut, Journal of Manufacturing Processes 124 (2024) 489–502.","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>.","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>","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} }","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>","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>."},"file_date_updated":"2024-06-23T21:59:20Z","quality_controlled":"1","oa":"1","status":"public","has_accepted_license":"1","publisher":"Elsevier BV","_id":"54847","page":"489-502","volume":124,"user_id":"65085","ddc":["670"],"publication":"Journal of Manufacturing Processes","abstract":[{"lang":"eng","text":"The widespread adoption of ultra-high strength steels, due to their high bulk resistivity, intensifies expulsion issues in resistance spot welding (RSW), deteriorating both the spot weld and surface quality. This study presents a novel approach to prevent expulsion by employing a preheating current. Through characteristic analysis of joint formation under critical welding current, the importance of plastic material encapsulation around the weld nugget (plastic shell) at high temperatures in preventing expulsion is highlighted. To evaluate the effect of preheating on the plastic shell and understand its mechanism in expulsion prevention, a two-dimensional welding simulation model for dissimilar ultra-high strength steel joints was established. The results showed that optimal preheating enhances the thickness of the plastic shell, improving its ability to encapsulate the weld nugget during the primary welding phase, thereby diminishing expulsion risks. Experimental validation confirmed that by employing the optimal preheating current, the maximum nugget diameter was enhanced to 9.42 mm, marking an increase of 13.4 % and extending the weldable current range by 27.5 %. Under quasi-static cross-tensile loading, joints with preheating demonstrated a 7.9 % enhancement in maximum load-bearing capacity compared to joints without preheating, showing a reproducible and complete pull-out failure mode within the heat-affected zone. This study offers a prevention method based on underlying mechanisms, providing a new perspective for future research on welding parameter optimization with the aim of expulsion prevention."}],"date_created":"2024-06-23T21:58:29Z","file":[{"success":1,"content_type":"application/pdf","file_id":"54848","file_size":12432409,"access_level":"closed","file_name":"1-s2.0-S1526612524006145-main.pdf","date_updated":"2024-06-23T21:59:20Z","relation":"main_file","date_created":"2024-06-23T21:59:20Z","creator":"kekeyang"}],"department":[{"_id":"157"}],"keyword":["Expulsion Resistance spot welding Finite element modelling Preheating Weldable current range Ultra-high strength steel"],"type":"journal_article","publication_identifier":{"issn":["1526-6125"]},"author":[{"id":"65085","first_name":"Keke","last_name":"Yang","orcid":"0000-0001-9201-9304","full_name":"Yang, Keke"},{"full_name":"El-Sari, Bassel","last_name":"El-Sari","first_name":"Bassel"},{"full_name":"Olfert, Viktoria","first_name":"Viktoria","last_name":"Olfert","id":"5974"},{"full_name":"Wang, Zhuoqun","last_name":"Wang","first_name":"Zhuoqun"},{"last_name":"Biegler","first_name":"Max","full_name":"Biegler, Max"},{"last_name":"Rethmeier","first_name":"Michael","full_name":"Rethmeier, Michael"},{"full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","first_name":"Gerson","last_name":"Meschut","id":"32056"}],"year":"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","article_type":"original","intvolume":"       124","publication_status":"published","date_updated":"2024-10-18T06:59:27Z","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S1526612524006145"}],"doi":"10.1016/j.jmapro.2024.06.034"},{"publication":"Production Engineering","abstract":[{"lang":"eng","text":"As a result of lightweight design, increased use is being made of high-strength steel and aluminium in car bodies. Self-piercing riveting is an established technique for joining these materials. The dissimilar properties of the two materials have led to a number of different rivet geometries in the past. Each rivet geometry fulfils the requirements of the materials within a limited range. In the present investigation, an improved rivet geometry is developed, which permits the reliable joining of two material combinations that could only be joined by two different rivet geometries up until now. Material combination 1 consists of high-strength steel on both sides, while material combination 2 comprises aluminium on the punch side and high-strength steel on the die side. The material flow and the stress and strain conditions prevailing during the joining process are analysed by means of numerical simulation. The rivet geometry is then improved step-by-step on the basis of this analysis. Finally, the improved rivet geometry is manufactured and the findings of the investigation are verified in experimental joining tests."}],"date_created":"2020-10-12T08:14:13Z","keyword":["Self-piercing riveting","Joining technology","Rivet geometry","Multi-material design","High-strength steel","Aluminium"],"type":"journal_article","department":[{"_id":"157"}],"year":"2020","title":"Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints","author":[{"id":"38131","full_name":"Uhe, Benedikt","first_name":"Benedikt","last_name":"Uhe"},{"full_name":"Kuball, Clara-Maria","first_name":"Clara-Maria","last_name":"Kuball"},{"last_name":"Merklein","first_name":"Marion","full_name":"Merklein, Marion"},{"id":"32056","last_name":"Meschut","first_name":"Gerson","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson"}],"date_updated":"2026-02-27T10:41:55Z","publication_status":"published","intvolume":"        14","article_type":"original","language":[{"iso":"eng"}],"doi":"10.1007/s11740-020-00973-w","citation":{"short":"B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, Production Engineering 14 (2020) 417–423.","chicago":"Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut. “Improvement of a Rivet Geometry for the Self-Piercing Riveting of High-Strength Steel and Multi-Material Joints.” <i>Production Engineering</i> 14 (2020): 417–23. <a href=\"https://doi.org/10.1007/s11740-020-00973-w\">https://doi.org/10.1007/s11740-020-00973-w</a>.","apa":"Uhe, B., Kuball, C.-M., Merklein, M., &#38; Meschut, G. (2020). Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints. <i>Production Engineering</i>, <i>14</i>, 417–423. <a href=\"https://doi.org/10.1007/s11740-020-00973-w\">https://doi.org/10.1007/s11740-020-00973-w</a>","ieee":"B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints,” <i>Production Engineering</i>, vol. 14, pp. 417–423, 2020, doi: <a href=\"https://doi.org/10.1007/s11740-020-00973-w\">10.1007/s11740-020-00973-w</a>.","ama":"Uhe B, Kuball C-M, Merklein M, Meschut G. Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints. <i>Production Engineering</i>. 2020;14:417-423. doi:<a href=\"https://doi.org/10.1007/s11740-020-00973-w\">10.1007/s11740-020-00973-w</a>","bibtex":"@article{Uhe_Kuball_Merklein_Meschut_2020, title={Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints}, volume={14}, DOI={<a href=\"https://doi.org/10.1007/s11740-020-00973-w\">10.1007/s11740-020-00973-w</a>}, journal={Production Engineering}, author={Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut, Gerson}, year={2020}, pages={417–423} }","mla":"Uhe, Benedikt, et al. “Improvement of a Rivet Geometry for the Self-Piercing Riveting of High-Strength Steel and Multi-Material Joints.” <i>Production Engineering</i>, vol. 14, 2020, pp. 417–23, doi:<a href=\"https://doi.org/10.1007/s11740-020-00973-w\">10.1007/s11740-020-00973-w</a>."},"quality_controlled":"1","status":"public","page":"417-423","_id":"19973","user_id":"53912","volume":14}]