[{"date_created":"2025-10-06T07:37:24Z","type":"journal_article","department":[{"_id":"43"},{"_id":"157"}],"publication":"Journal of Manufacturing Processes","language":[{"iso":"eng"}],"doi":"10.1016/j.jmapro.2025.09.059","title":"From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties","year":"2025","author":[{"first_name":"Jonathan-Markus","last_name":"Einwag","full_name":"Einwag, Jonathan-Markus"},{"last_name":"Steinfelder","first_name":"Christian","full_name":"Steinfelder, Christian"},{"full_name":"Wartzack, Sandro","first_name":"Sandro","last_name":"Wartzack"},{"first_name":"Alexander","last_name":"Brosius","full_name":"Brosius, Alexander"},{"last_name":"Goetz","first_name":"Stefan","full_name":"Goetz, Stefan"}],"publication_identifier":{"issn":["1526-6125"]},"publication_status":"published","date_updated":"2025-11-12T08:35:35Z","intvolume":"       154","citation":{"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.” <i>Journal of Manufacturing Processes</i> 154 (2025): 179–91. <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">https://doi.org/10.1016/j.jmapro.2025.09.059</a>.","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. <i>Journal of Manufacturing Processes</i>. 2025;154:179-191. doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">10.1016/j.jmapro.2025.09.059</a>","short":"J.-M. Einwag, C. Steinfelder, S. Wartzack, A. Brosius, S. Goetz, Journal of Manufacturing Processes 154 (2025) 179–191.","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={<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">10.1016/j.jmapro.2025.09.059</a>}, 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} }","apa":"Einwag, J.-M., Steinfelder, C., Wartzack, S., Brosius, A., &#38; Goetz, S. (2025). From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties. <i>Journal of Manufacturing Processes</i>, <i>154</i>, 179–191. <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">https://doi.org/10.1016/j.jmapro.2025.09.059</a>","mla":"Einwag, Jonathan-Markus, et al. “From Simulation to Metamodel to Experiment: Evaluating the Prediction Accuracy of Polynomial Regression Models for Clinch Joint Properties.” <i>Journal of Manufacturing Processes</i>, vol. 154, Elsevier BV, 2025, pp. 179–91, doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">10.1016/j.jmapro.2025.09.059</a>.","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,” <i>Journal of Manufacturing Processes</i>, vol. 154, pp. 179–191, 2025, doi: <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">10.1016/j.jmapro.2025.09.059</a>."},"project":[{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"},{"_id":"132","name":"TRR 285 - Project Area B"},{"_id":"140","name":"TRR 285 - Subproject B01"},{"name":"TRR 285 - Subproject B05","_id":"144"}],"page":"179-191","publisher":"Elsevier BV","_id":"61524","user_id":"107109","volume":154,"status":"public"},{"intvolume":"       349","date_updated":"2025-11-12T07:34:26Z","publication_status":"published","author":[{"first_name":"Tim","last_name":"Prüßner","full_name":"Prüßner, Tim"},{"last_name":"Hoyer","first_name":"Kay-Peter","full_name":"Hoyer, Kay-Peter","id":"48411"},{"id":"1449","full_name":"Buitkamp, Nadine","last_name":"Buitkamp","first_name":"Nadine"},{"full_name":"Vieth, Pascal","first_name":"Pascal","last_name":"Vieth"},{"last_name":"Grundmeier","first_name":"Guido","full_name":"Grundmeier, Guido","id":"194"}],"publication_identifier":{"issn":["0254-0584"]},"year":"2025","title":"Surface functionalisation of additively manufactured AlSi10Mg by organophosphonic acid and PDMS grafting","doi":"10.1016/j.matchemphys.2025.131758","language":[{"iso":"eng"}],"article_number":"131758","publication":"Materials Chemistry and Physics","department":[{"_id":"9"},{"_id":"158"},{"_id":"321"}],"type":"journal_article","date_created":"2025-11-12T07:33:04Z","status":"public","volume":349,"user_id":"48411","_id":"62166","publisher":"Elsevier BV","quality_controlled":"1","citation":{"ama":"Prüßner T, Hoyer K-P, Buitkamp N, Vieth P, Grundmeier G. Surface functionalisation of additively manufactured AlSi10Mg by organophosphonic acid and PDMS grafting. <i>Materials Chemistry and Physics</i>. 2025;349. doi:<a href=\"https://doi.org/10.1016/j.matchemphys.2025.131758\">10.1016/j.matchemphys.2025.131758</a>","bibtex":"@article{Prüßner_Hoyer_Buitkamp_Vieth_Grundmeier_2025, title={Surface functionalisation of additively manufactured AlSi10Mg by organophosphonic acid and PDMS grafting}, volume={349}, DOI={<a href=\"https://doi.org/10.1016/j.matchemphys.2025.131758\">10.1016/j.matchemphys.2025.131758</a>}, number={131758}, journal={Materials Chemistry and Physics}, publisher={Elsevier BV}, author={Prüßner, Tim and Hoyer, Kay-Peter and Buitkamp, Nadine and Vieth, Pascal and Grundmeier, Guido}, year={2025} }","mla":"Prüßner, Tim, et al. “Surface Functionalisation of Additively Manufactured AlSi10Mg by Organophosphonic Acid and PDMS Grafting.” <i>Materials Chemistry and Physics</i>, vol. 349, 131758, Elsevier BV, 2025, doi:<a href=\"https://doi.org/10.1016/j.matchemphys.2025.131758\">10.1016/j.matchemphys.2025.131758</a>.","chicago":"Prüßner, Tim, Kay-Peter Hoyer, Nadine Buitkamp, Pascal Vieth, and Guido Grundmeier. “Surface Functionalisation of Additively Manufactured AlSi10Mg by Organophosphonic Acid and PDMS Grafting.” <i>Materials Chemistry and Physics</i> 349 (2025). <a href=\"https://doi.org/10.1016/j.matchemphys.2025.131758\">https://doi.org/10.1016/j.matchemphys.2025.131758</a>.","short":"T. Prüßner, K.-P. Hoyer, N. Buitkamp, P. Vieth, G. Grundmeier, Materials Chemistry and Physics 349 (2025).","apa":"Prüßner, T., Hoyer, K.-P., Buitkamp, N., Vieth, P., &#38; Grundmeier, G. (2025). Surface functionalisation of additively manufactured AlSi10Mg by organophosphonic acid and PDMS grafting. <i>Materials Chemistry and Physics</i>, <i>349</i>, Article 131758. <a href=\"https://doi.org/10.1016/j.matchemphys.2025.131758\">https://doi.org/10.1016/j.matchemphys.2025.131758</a>","ieee":"T. Prüßner, K.-P. Hoyer, N. Buitkamp, P. Vieth, and G. Grundmeier, “Surface functionalisation of additively manufactured AlSi10Mg by organophosphonic acid and PDMS grafting,” <i>Materials Chemistry and Physics</i>, vol. 349, Art. no. 131758, 2025, doi: <a href=\"https://doi.org/10.1016/j.matchemphys.2025.131758\">10.1016/j.matchemphys.2025.131758</a>."}},{"date_created":"2025-11-13T16:37:59Z","type":"conference","department":[{"_id":"43"},{"_id":"9"},{"_id":"26"},{"_id":"152"}],"publication":"AHFE International","abstract":[{"lang":"eng","text":"<jats:p>This research investigates how Artificial Intelligence (AI) can be systematically integrated into existing business processes by combining suitable competencies with graphical AI workflow modelling. While AI offers a high potential for automation and increased efficiency, its implementation often fails due to a lack of interdisciplinary competencies that bridge the gap between domain expertise and IT know-how. Low-code platforms and visual modelling tools are increasingly recognised as enablers, empowering non-programmers to intuitively create graphical AI- based workflows. Nevertheless, specific competencies are required to realise the full potential of AI, the domain specific knowledge and align technical understanding with AI capabilities. The paper reviews the state of the art in AI-driven business process automation and competencies for visual low-code approaches. It then presents a practical solution to identify and systematise essential competence areas. Based on this, a practical competence model is developed to support the design of user-friendly, AI-enabled workflows. This is tested in a practical application context — emergency management — where it supports critical decision-making processes and is validated through expert feedback. The study concludes by offering actionable recommendations to help organisations foster the necessary competencies and methods for competently integrating AI into their digital processes.</jats:p>"}],"language":[{"iso":"eng"}],"doi":"10.54941/ahfe1006785","title":"Graphical AI workflow modelling: Identifying relevant competencies in AI-based automation of business processes","year":"2025","author":[{"orcid":"0000-0001-5765-971X","first_name":"Iris","last_name":"Gräßler","full_name":"Gräßler, Iris","id":"47565"},{"last_name":"Özcan","first_name":"Deniz","full_name":"Özcan, Deniz","id":"58595"}],"publication_identifier":{"issn":["2771-0718"]},"date_updated":"2025-11-13T16:41:39Z","publication_status":"published","intvolume":"       198","citation":{"apa":"Gräßler, I., &#38; Özcan, D. (2025). Graphical AI workflow modelling: Identifying relevant competencies in AI-based automation of business processes. <i>AHFE International</i>, <i>198</i>. <a href=\"https://doi.org/10.54941/ahfe1006785\">https://doi.org/10.54941/ahfe1006785</a>","ieee":"I. Gräßler and D. Özcan, “Graphical AI workflow modelling: Identifying relevant competencies in AI-based automation of business processes,” in <i>AHFE International</i>, Split, 2025, vol. 198, doi: <a href=\"https://doi.org/10.54941/ahfe1006785\">10.54941/ahfe1006785</a>.","short":"I. Gräßler, D. Özcan, in: AHFE International, AHFE International, 2025.","chicago":"Gräßler, Iris, and Deniz Özcan. “Graphical AI Workflow Modelling: Identifying Relevant Competencies in AI-Based Automation of Business Processes.” In <i>AHFE International</i>, Vol. 198. AHFE International, 2025. <a href=\"https://doi.org/10.54941/ahfe1006785\">https://doi.org/10.54941/ahfe1006785</a>.","mla":"Gräßler, Iris, and Deniz Özcan. “Graphical AI Workflow Modelling: Identifying Relevant Competencies in AI-Based Automation of Business Processes.” <i>AHFE International</i>, vol. 198, AHFE International, 2025, doi:<a href=\"https://doi.org/10.54941/ahfe1006785\">10.54941/ahfe1006785</a>.","ama":"Gräßler I, Özcan D. Graphical AI workflow modelling: Identifying relevant competencies in AI-based automation of business processes. In: <i>AHFE International</i>. Vol 198. AHFE International; 2025. doi:<a href=\"https://doi.org/10.54941/ahfe1006785\">10.54941/ahfe1006785</a>","bibtex":"@inproceedings{Gräßler_Özcan_2025, title={Graphical AI workflow modelling: Identifying relevant competencies in AI-based automation of business processes}, volume={198}, DOI={<a href=\"https://doi.org/10.54941/ahfe1006785\">10.54941/ahfe1006785</a>}, booktitle={AHFE International}, publisher={AHFE International}, author={Gräßler, Iris and Özcan, Deniz}, year={2025} }"},"quality_controlled":"1","_id":"62181","publisher":"AHFE International","user_id":"58595","volume":198,"status":"public","conference":{"end_date":"2025-09-24","name":"7th International Conference on Human Systems Engineering and Design: Future Trends and Applications (IHSED 2025)","start_date":"2025-09-22","location":"Split"}},{"language":[{"iso":"eng"}],"_id":"62182","publisher":"VDI Verlag","alternative_title":["VDI-Studie"],"doi":"10.51202/9783911670180","user_id":"58595","publication_identifier":{"isbn":["9783911670180"]},"author":[{"id":"47565","full_name":"Gräßler, Iris","first_name":"Iris","orcid":"0000-0001-5765-971X","last_name":"Gräßler"},{"full_name":"Özcan, Deniz","first_name":"Deniz","last_name":"Özcan","id":"58595"},{"full_name":"Tusek, Alena Marie","last_name":"Tusek","first_name":"Alena Marie","id":"59370"},{"first_name":"Attila","last_name":"Bilgic","full_name":"Bilgic, Attila"},{"first_name":"Christian","last_name":"Lange","full_name":"Lange, Christian"},{"first_name":"Christian","last_name":"Stich","full_name":"Stich, Christian"},{"full_name":"Maul, Christine","first_name":"Christine","last_name":"Maul"},{"full_name":"Heizmann, Michael","first_name":"Michael","last_name":"Heizmann"},{"full_name":"Weyrich, Michael","first_name":"Michael","last_name":"Weyrich"},{"first_name":"Sascha","last_name":"Dessel,","full_name":"Dessel,, Sascha"},{"last_name":"Miny","first_name":"Torben","full_name":"Miny, Torben"},{"first_name":"Ulrich","last_name":"Jumar","full_name":"Jumar, Ulrich"}],"status":"public","year":"2025","title":"Automation 2035","date_updated":"2025-11-13T16:48:43Z","publication_status":"published","date_created":"2025-11-13T16:43:05Z","department":[{"_id":"43"},{"_id":"9"},{"_id":"26"},{"_id":"152"}],"type":"book","citation":{"ieee":"I. Gräßler <i>et al.</i>, <i>Automation 2035</i>. VDI Verlag, 2025.","apa":"Gräßler, I., Özcan, D., Tusek, A. M., Bilgic, A., Lange, C., Stich, C., Maul, C., Heizmann, M., Weyrich, M., Dessel, S., Miny, T., &#38; Jumar, U. (2025). <i>Automation 2035</i>. VDI Verlag. <a href=\"https://doi.org/10.51202/9783911670180\">https://doi.org/10.51202/9783911670180</a>","mla":"Gräßler, Iris, et al. <i>Automation 2035</i>. VDI Verlag, 2025, doi:<a href=\"https://doi.org/10.51202/9783911670180\">10.51202/9783911670180</a>.","bibtex":"@book{Gräßler_Özcan_Tusek_Bilgic_Lange_Stich_Maul_Heizmann_Weyrich_Dessel,_et al._2025, title={Automation 2035}, DOI={<a href=\"https://doi.org/10.51202/9783911670180\">10.51202/9783911670180</a>}, publisher={VDI Verlag}, author={Gräßler, Iris and Özcan, Deniz and Tusek, Alena Marie and Bilgic, Attila and Lange, Christian and Stich, Christian and Maul, Christine and Heizmann, Michael and Weyrich, Michael and Dessel, Sascha and et al.}, year={2025} }","short":"I. Gräßler, D. Özcan, A.M. Tusek, A. Bilgic, C. Lange, C. Stich, C. Maul, M. Heizmann, M. Weyrich, S. Dessel, T. Miny, U. Jumar, Automation 2035, VDI Verlag, 2025.","ama":"Gräßler I, Özcan D, Tusek AM, et al. <i>Automation 2035</i>. VDI Verlag; 2025. doi:<a href=\"https://doi.org/10.51202/9783911670180\">10.51202/9783911670180</a>","chicago":"Gräßler, Iris, Deniz Özcan, Alena Marie Tusek, Attila Bilgic, Christian Lange, Christian Stich, Christine Maul, et al. <i>Automation 2035</i>. VDI Verlag, 2025. <a href=\"https://doi.org/10.51202/9783911670180\">https://doi.org/10.51202/9783911670180</a>."},"abstract":[{"lang":"eng","text":"<p> Executive summary Die vorliegende Zukunftsstudie „Automation 2035“ gibt einen Ausblick auf die Entwicklung der Automatisierungstechnik in den nächsten 10 Jahren. Neben der Beschreibung von Trends wie Kreislaufwirtschaft, Automatisierung der Märkte, Biologisierung, autonome Systeme und Robotik sowie IT-Sicherheit wird die zu erwartende Veränderung in der Bildung beschrieben. Dazu verwenden wir Methoden der Zukunftsforschung und arbeiten mit der Szenarientechnik, um Zukunftsperspektiven der Automation aufzuzeigen. Personas werden eingesetzt, um die zukünftigen Entwicklungen plastisch aus den Augen der Personen im Jahr 2025 und in der Zukunft im Jahr 2035 zu beschreiben. Schlüsselthemen und Trends: ... ... Inhalt Executive summary 1 1 Einführung 3 2 Zukunftsfelder für die Automatisierungstechnik 2035 4 2.1 Kreislaufwirtschaft 4 2.2 Automatisierung der Märkte 7 2.3 Biologisierung 8 2.4 Autonome Systeme und Robotik 10 2.5 Security 12 2.6 Veränderung der Ausbildung 13 3 Szenario der Automation 2035 16 4 Personas 18 4.1 Unternehmer 18 4.2 Ingenieurin 19 4.3 Schüler 20 5 Thesen und Ausblick 22 Methodik 24 Autorenteam 25 Schrifttum 26... </p>"}],"quality_controlled":"1"},{"date_updated":"2025-11-17T08:41:59Z","publication_status":"published","intvolume":"       115","year":"2025","title":"Ressourceneffiziente Fertigung von Leichtbaustrukturen","author":[{"last_name":"Weck","first_name":"Daniel","full_name":"Weck, Daniel"},{"first_name":"Michael","last_name":"Müller-Pabel","full_name":"Müller-Pabel, Michael"},{"last_name":"Krampitz","first_name":"Thomas","full_name":"Krampitz, Thomas"},{"full_name":"Hecker, Christine","first_name":"Christine","last_name":"Hecker"},{"full_name":"Selvaggio, Alessandro","first_name":"Alessandro","last_name":"Selvaggio"},{"id":"44391","full_name":"Gilich, Julian","first_name":"Julian","last_name":"Gilich"},{"full_name":"Gude, Maik","first_name":"Maik","last_name":"Gude"},{"first_name":"Holger","last_name":"Lieberwirth","full_name":"Lieberwirth, Holger"},{"full_name":"Tekkaya, A. Erman","last_name":"Tekkaya","first_name":"A. Erman"},{"full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson","id":"32056"}],"doi":"10.37544/1436-4980-2025-10-12","language":[{"iso":"ger"}],"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."}],"publication":"Werkstattstechnik online","issue":"10","type":"journal_article","department":[{"_id":"157"}],"date_created":"2025-11-17T08:36:04Z","status":"public","user_id":"44391","volume":115,"page":"708-717","_id":"62211","publisher":"VDI Fachmedien GmbH and Co. KG","quality_controlled":"1","citation":{"apa":"Weck, D., Müller-Pabel, M., Krampitz, T., Hecker, C., Selvaggio, A., Gilich, J., Gude, M., Lieberwirth, H., Tekkaya, A. E., &#38; Meschut, G. (2025). Ressourceneffiziente Fertigung von Leichtbaustrukturen. <i>Werkstattstechnik online</i>, <i>115</i>(10), 708–717. <a href=\"https://doi.org/10.37544/1436-4980-2025-10-12\">https://doi.org/10.37544/1436-4980-2025-10-12</a>","ieee":"D. Weck <i>et al.</i>, “Ressourceneffiziente Fertigung von Leichtbaustrukturen,” <i>Werkstattstechnik online</i>, vol. 115, no. 10, pp. 708–717, 2025, doi: <a href=\"https://doi.org/10.37544/1436-4980-2025-10-12\">10.37544/1436-4980-2025-10-12</a>.","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.","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.” <i>Werkstattstechnik online</i> 115, no. 10 (2025): 708–17. <a href=\"https://doi.org/10.37544/1436-4980-2025-10-12\">https://doi.org/10.37544/1436-4980-2025-10-12</a>.","mla":"Weck, Daniel, et al. “Ressourceneffiziente Fertigung von Leichtbaustrukturen.” <i>Werkstattstechnik online</i>, vol. 115, no. 10, VDI Fachmedien GmbH and Co. KG, 2025, pp. 708–17, doi:<a href=\"https://doi.org/10.37544/1436-4980-2025-10-12\">10.37544/1436-4980-2025-10-12</a>.","ama":"Weck D, Müller-Pabel M, Krampitz T, et al. Ressourceneffiziente Fertigung von Leichtbaustrukturen. <i>Werkstattstechnik online</i>. 2025;115(10):708-717. doi:<a href=\"https://doi.org/10.37544/1436-4980-2025-10-12\">10.37544/1436-4980-2025-10-12</a>","bibtex":"@article{Weck_Müller-Pabel_Krampitz_Hecker_Selvaggio_Gilich_Gude_Lieberwirth_Tekkaya_Meschut_2025, title={Ressourceneffiziente Fertigung von Leichtbaustrukturen}, volume={115}, DOI={<a href=\"https://doi.org/10.37544/1436-4980-2025-10-12\">10.37544/1436-4980-2025-10-12</a>}, 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} }"}},{"conference":{"end_date":"2025-10-03","name":"11th World Sustainability Forum (WSF11)","start_date":"2025-10-02","location":"Barcelona"},"author":[{"first_name":"Iris","last_name":"Gräßler","orcid":"0000-0001-5765-971X","full_name":"Gräßler, Iris","id":"47565"},{"full_name":"Pottebaum, Jens","first_name":"Jens","orcid":"http://orcid.org/0000-0001-8778-2989","last_name":"Pottebaum","id":"405"},{"id":"67999","first_name":"Sven","orcid":"https://orcid.org/0000-0003-0602-9923","last_name":"Rarbach","full_name":"Rarbach, Sven"}],"year":"2025","status":"public","title":"Potentials of Product Lifecycle Management to Enhance Circular Economy","date_updated":"2025-11-28T10:49:48Z","publication_status":"published","language":[{"iso":"eng"}],"_id":"62688","publisher":"MDPI","main_file_link":[{"url":"https://www.mdpi.com/2504-3900/131/1/47/pdf?version=1764145984","open_access":"1"}],"doi":"10.3390/proceedings2025131047","user_id":"67999","citation":{"ama":"Gräßler I, Pottebaum J, Rarbach S. Potentials of Product Lifecycle Management to Enhance Circular Economy. In: <i>The 11th World Sustainability Forum (WSF11)</i>. MDPI; 2025. doi:<a href=\"https://doi.org/10.3390/proceedings2025131047\">10.3390/proceedings2025131047</a>","bibtex":"@inproceedings{Gräßler_Pottebaum_Rarbach_2025, title={Potentials of Product Lifecycle Management to Enhance Circular Economy}, DOI={<a href=\"https://doi.org/10.3390/proceedings2025131047\">10.3390/proceedings2025131047</a>}, booktitle={The 11th World Sustainability Forum (WSF11)}, publisher={MDPI}, author={Gräßler, Iris and Pottebaum, Jens and Rarbach, Sven}, year={2025} }","mla":"Gräßler, Iris, et al. “Potentials of Product Lifecycle Management to Enhance Circular Economy.” <i>The 11th World Sustainability Forum (WSF11)</i>, MDPI, 2025, doi:<a href=\"https://doi.org/10.3390/proceedings2025131047\">10.3390/proceedings2025131047</a>.","chicago":"Gräßler, Iris, Jens Pottebaum, and Sven Rarbach. “Potentials of Product Lifecycle Management to Enhance Circular Economy.” In <i>The 11th World Sustainability Forum (WSF11)</i>. MDPI, 2025. <a href=\"https://doi.org/10.3390/proceedings2025131047\">https://doi.org/10.3390/proceedings2025131047</a>.","short":"I. Gräßler, J. Pottebaum, S. Rarbach, in: The 11th World Sustainability Forum (WSF11), MDPI, 2025.","apa":"Gräßler, I., Pottebaum, J., &#38; Rarbach, S. (2025). Potentials of Product Lifecycle Management to Enhance Circular Economy. <i>The 11th World Sustainability Forum (WSF11)</i>. 11th World Sustainability Forum (WSF11), Barcelona. <a href=\"https://doi.org/10.3390/proceedings2025131047\">https://doi.org/10.3390/proceedings2025131047</a>","ieee":"I. Gräßler, J. Pottebaum, and S. Rarbach, “Potentials of Product Lifecycle Management to Enhance Circular Economy,” presented at the 11th World Sustainability Forum (WSF11), Barcelona, 2025, doi: <a href=\"https://doi.org/10.3390/proceedings2025131047\">10.3390/proceedings2025131047</a>."},"publication":"The 11th World Sustainability Forum (WSF11)","quality_controlled":"1","date_created":"2025-11-28T10:46:42Z","oa":"1","department":[{"_id":"152"}],"type":"conference"},{"place":"Sankt Augustin","citation":{"chicago":"Neuser, Moritz, Gerrit Cichon, Kay-Peter Hoyer, and Mirko Schaper. “Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen.” In <i>Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen</i>, 43:454–59. Sankt Augustin: Deutsche Gesellschaft für Materialkunde (DGM), 2025.","short":"M. Neuser, G. Cichon, K.-P. Hoyer, M. Schaper, in: Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen, Deutsche Gesellschaft für Materialkunde (DGM), Sankt Augustin, 2025, pp. 454–459.","ieee":"M. Neuser, G. Cichon, K.-P. Hoyer, and M. Schaper, “Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen,” in <i>Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen</i>, Dresden, 2025, vol. 43, pp. 454–459.","apa":"Neuser, M., Cichon, G., Hoyer, K.-P., &#38; Schaper, M. (2025). Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen. <i>Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen</i>, <i>43</i>, 454–459.","bibtex":"@inproceedings{Neuser_Cichon_Hoyer_Schaper_2025, place={Sankt Augustin}, title={Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen}, volume={43}, booktitle={Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen}, publisher={Deutsche Gesellschaft für Materialkunde (DGM)}, author={Neuser, Moritz and Cichon, Gerrit and Hoyer, Kay-Peter and Schaper, Mirko}, year={2025}, pages={454–459} }","ama":"Neuser M, Cichon G, Hoyer K-P, Schaper M. Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen. In: <i>Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen</i>. Vol 43. Deutsche Gesellschaft für Materialkunde (DGM); 2025:454-459.","mla":"Neuser, Moritz, et al. “Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen.” <i>Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen</i>, vol. 43, Deutsche Gesellschaft für Materialkunde (DGM), 2025, pp. 454–59."},"quality_controlled":"1","project":[{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"},{"_id":"131","name":"TRR 285 - Project Area A"},{"name":"TRR 285 - Subproject A02","_id":"136"}],"page":"454 - 459","publisher":"Deutsche Gesellschaft für Materialkunde (DGM)","_id":"62725","user_id":"32340","volume":43,"status":"public","conference":{"location":"Dresden","start_date":"2025-11-27","name":"Werkstoffprüfung - 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025","end_date":"2025-11-28"},"date_created":"2025-12-01T13:46:42Z","keyword":["Bildauswertendes Verfahren","Mikrostrukturanalyse","AlSi-System","Si-Morphologie"],"type":"conference","department":[{"_id":"43"},{"_id":"9"},{"_id":"158"},{"_id":"321"}],"publication":"Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen","abstract":[{"text":"Aluminium-Silizium-Legierungen (AlSi) werden insbesondere bei der gießtechnischen\r\nHerstellung von Leichtbaukomponenten für Fahrzeuge verwendet. Dieses Legierungssystem hat hervorragende\r\nGießeigenschaften bei gleichzeitig akzeptablen mechanischen Eigenschaften. Aufgrund des hohen\r\nSilizium-(Si)-Gehaltes, wodurch die Volumenkontraktion im Phasenübergang von flüssig-fest nahezu\r\nunterbunden wird, neigen AlSi-Legierungen dazu, feinere oder gröbere Si-Platten bei unterschiedlichen\r\nErstarrungsgeschwindigkeiten zu bilden. Um die mechanischen Eigenschaften zu verbessern, werden\r\ndem Legierungssystem in der Schmelzphase entweder Natrium (Na) oder Strontium (Sr) zugesetzt. Dies\r\nhat zur Folge, dass sich eine fein lamellare Si-Morphologie bei der Erstarrung ausbildet; dies kann ebenfalls\r\ndurch hohe Erstarrungsgeschwindigkeiten erreicht werden. Ein nachfolgendes Lösungsglühen bewirkt\r\neine Sphäroidisierung der Si-Partikel und dient der Steigerung der Duktilität. Aktuell fehlen fundierte\r\nErkenntnisse zur Ausprägung der Si-Morphologie in Abhängigkeit der Erstarrungsgeschwindigkeit oder\r\ninfolge einer Wärmebehandlung. Vor diesem Hintergrund werden in dieser Studie verschiedene Behandlungsparameter\r\nin Bezug auf das Einformverhalten der Si-Partikel mit einem bildauswertenden Verfahren\r\nevaluiert sowie unter Bezug auf verschiedene chemische Zusammensetzungen miteinander korreliert.","lang":"ger"},{"lang":"eng","text":"Aluminium-silicon alloys (AlSi) are used in the casting of lightweight vehicle components. This\r\nalloy system has excellent casting properties accompanied by acceptable mechanical properties. Due to\r\nthe high silicon (Si) content, which almost completely prevents volume contraction during the liquid-solid\r\nphase transition, AlSi alloys tend to form finer or coarser Si plates at different solidification rates. To\r\nimprove the mechanical properties, either sodium (Na) or strontium (Sr) is added to the alloy system in\r\nthe melting phase. This results in the formation of a fine lamellar Si morphology during solidification, which\r\ncan also be achieved by high solidification rates. Subsequent solution annealing causes spheroidisation\r\nof the Si particles and increases ductility. Currently, there is a lack in scientific knowledge regarding the\r\nSi-morphology as a function of solidification rate or as a result of heat treatment. Therefore, this study\r\nevaluates various treatment parameters in relation to the shaping behaviour of Si particles using an image\r\nanalysis method and correlates them with different chemical compositions."}],"language":[{"iso":"ger"}],"alternative_title":["Image analysis method for evaluating the microstructure of AlSi-alloys"],"year":"2025","title":"Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen","publication_identifier":{"isbn":["978-3-88355-454-9"]},"author":[{"full_name":"Neuser, Moritz","first_name":"Moritz","last_name":"Neuser","id":"32340"},{"first_name":"Gerrit","last_name":"Cichon","full_name":"Cichon, Gerrit"},{"last_name":"Hoyer","first_name":"Kay-Peter","full_name":"Hoyer, Kay-Peter","id":"48411"},{"id":"43720","full_name":"Schaper, Mirko","last_name":"Schaper","first_name":"Mirko"}],"publication_status":"published","date_updated":"2025-12-01T13:46:53Z","intvolume":"        43"},{"date_created":"2025-12-08T07:40:18Z","type":"journal_article","keyword":["Sandwich packings Structured packings Rate-based approach Model validation Ultra-fast X-ray tomography"],"department":[{"_id":"831"}],"publication":"Chemical Engineering Science","abstract":[{"text":"Sandwich packings are assembled from two conventional structured packings with different geometrical surface areas stacked alternatingly within a separation column. When operated under partially flooded conditions, they provide significant mass transfer improvement compared to common structured packings. In this work, a rate-based model including novel mass transfer correlations is presented and validated using a comprehensive experimental database for the reactive absorption of CO2 into aqueous monoethanolamine. The proposed rate-based approach is capable of accounting for axial dispersion, thereby enabling the evaluation of the effect of liquid-phase backmixing on the mass transfer performance. The validated rate-based model is used to evaluate the separation performance of sandwich packings. Compared with structured packings, up to 10 % higher mass transfer rates are obtained.","lang":"eng"}],"article_number":"122681","language":[{"iso":"eng"}],"doi":"10.1016/j.ces.2025.122681","year":"2025","title":"A rate-based model for reactive separation columns with sandwich packings","author":[{"full_name":"Franke, Patrick","first_name":"Patrick","last_name":"Franke","id":"93922"},{"full_name":"Schubert, Markus","first_name":"Markus","last_name":"Schubert"},{"full_name":"Hampel, Uwe","first_name":"Uwe","last_name":"Hampel"},{"first_name":"Eugeny Y.","last_name":"Kenig","full_name":"Kenig, Eugeny Y.","id":"665"}],"publication_identifier":{"issn":["0009-2509"]},"date_updated":"2025-12-08T07:45:19Z","publication_status":"published","intvolume":"       321","article_type":"original","citation":{"mla":"Franke, Patrick, et al. “A Rate-Based Model for Reactive Separation Columns with Sandwich Packings.” <i>Chemical Engineering Science</i>, vol. 321, 122681, Elsevier BV, 2025, doi:<a href=\"https://doi.org/10.1016/j.ces.2025.122681\">10.1016/j.ces.2025.122681</a>.","ama":"Franke P, Schubert M, Hampel U, Kenig EY. A rate-based model for reactive separation columns with sandwich packings. <i>Chemical Engineering Science</i>. 2025;321. doi:<a href=\"https://doi.org/10.1016/j.ces.2025.122681\">10.1016/j.ces.2025.122681</a>","bibtex":"@article{Franke_Schubert_Hampel_Kenig_2025, title={A rate-based model for reactive separation columns with sandwich packings}, volume={321}, DOI={<a href=\"https://doi.org/10.1016/j.ces.2025.122681\">10.1016/j.ces.2025.122681</a>}, number={122681}, journal={Chemical Engineering Science}, publisher={Elsevier BV}, author={Franke, Patrick and Schubert, Markus and Hampel, Uwe and Kenig, Eugeny Y.}, year={2025} }","apa":"Franke, P., Schubert, M., Hampel, U., &#38; Kenig, E. Y. (2025). A rate-based model for reactive separation columns with sandwich packings. <i>Chemical Engineering Science</i>, <i>321</i>, Article 122681. <a href=\"https://doi.org/10.1016/j.ces.2025.122681\">https://doi.org/10.1016/j.ces.2025.122681</a>","ieee":"P. Franke, M. Schubert, U. Hampel, and E. Y. Kenig, “A rate-based model for reactive separation columns with sandwich packings,” <i>Chemical Engineering Science</i>, vol. 321, Art. no. 122681, 2025, doi: <a href=\"https://doi.org/10.1016/j.ces.2025.122681\">10.1016/j.ces.2025.122681</a>.","chicago":"Franke, Patrick, Markus Schubert, Uwe Hampel, and Eugeny Y. Kenig. “A Rate-Based Model for Reactive Separation Columns with Sandwich Packings.” <i>Chemical Engineering Science</i> 321 (2025). <a href=\"https://doi.org/10.1016/j.ces.2025.122681\">https://doi.org/10.1016/j.ces.2025.122681</a>.","short":"P. Franke, M. Schubert, U. Hampel, E.Y. Kenig, Chemical Engineering Science 321 (2025)."},"quality_controlled":"1","publisher":"Elsevier BV","_id":"62937","user_id":"93922","volume":321,"status":"public"},{"oa":"1","quality_controlled":"1","file_date_updated":"2025-12-12T13:12:33Z","citation":{"ieee":"P. Steinmeier, K.-P. Hoyer, N. F. Lopes Dias, R. Zielke, W. Tillmann, and M. Schaper, “In Situ Alloying of Ti-6Al-7Nb with Copper Using Laser Powder Bed Fusion,” <i>Crystals</i>, vol. 15, no. 12, Art. no. 1053, 2025, doi: <a href=\"https://doi.org/10.3390/cryst15121053\">10.3390/cryst15121053</a>.","apa":"Steinmeier, P., Hoyer, K.-P., Lopes Dias, N. F., Zielke, R., Tillmann, W., &#38; Schaper, M. (2025). In Situ Alloying of Ti-6Al-7Nb with Copper Using Laser Powder Bed Fusion. <i>Crystals</i>, <i>15</i>(12), Article 1053. <a href=\"https://doi.org/10.3390/cryst15121053\">https://doi.org/10.3390/cryst15121053</a>","short":"P. Steinmeier, K.-P. Hoyer, N.F. Lopes Dias, R. Zielke, W. Tillmann, M. Schaper, Crystals 15 (2025).","chicago":"Steinmeier, Paul, Kay-Peter Hoyer, Nelson Filipe Lopes Dias, Reiner Zielke, Wolfgang Tillmann, and Mirko Schaper. “In Situ Alloying of Ti-6Al-7Nb with Copper Using Laser Powder Bed Fusion.” <i>Crystals</i> 15, no. 12 (2025). <a href=\"https://doi.org/10.3390/cryst15121053\">https://doi.org/10.3390/cryst15121053</a>.","mla":"Steinmeier, Paul, et al. “In Situ Alloying of Ti-6Al-7Nb with Copper Using Laser Powder Bed Fusion.” <i>Crystals</i>, vol. 15, no. 12, 1053, MDPI AG, 2025, doi:<a href=\"https://doi.org/10.3390/cryst15121053\">10.3390/cryst15121053</a>.","bibtex":"@article{Steinmeier_Hoyer_Lopes Dias_Zielke_Tillmann_Schaper_2025, title={In Situ Alloying of Ti-6Al-7Nb with Copper Using Laser Powder Bed Fusion}, volume={15}, DOI={<a href=\"https://doi.org/10.3390/cryst15121053\">10.3390/cryst15121053</a>}, number={121053}, journal={Crystals}, publisher={MDPI AG}, author={Steinmeier, Paul and Hoyer, Kay-Peter and Lopes Dias, Nelson Filipe and Zielke, Reiner and Tillmann, Wolfgang and Schaper, Mirko}, year={2025} }","ama":"Steinmeier P, Hoyer K-P, Lopes Dias NF, Zielke R, Tillmann W, Schaper M. In Situ Alloying of Ti-6Al-7Nb with Copper Using Laser Powder Bed Fusion. <i>Crystals</i>. 2025;15(12). doi:<a href=\"https://doi.org/10.3390/cryst15121053\">10.3390/cryst15121053</a>"},"ddc":["620"],"user_id":"69776","volume":15,"funded_apc":"1","_id":"63072","publisher":"MDPI AG","has_accepted_license":"1","status":"public","type":"journal_article","keyword":["Biomaterial","In Situ Alloying","Titanium","Additive Manufacturing"],"department":[{"_id":"158"},{"_id":"321"}],"file":[{"file_id":"63073","content_type":"application/pdf","success":1,"relation":"main_file","date_updated":"2025-12-12T13:12:33Z","file_name":"crystals-15-01053.pdf","file_size":20716652,"access_level":"closed","date_created":"2025-12-12T13:12:33Z","creator":"paulstei"}],"date_created":"2025-12-12T13:11:59Z","abstract":[{"text":"<jats:p>Titanium alloys are widely employed for biomedical implants due to their high strength, biocompatibility, and corrosion resistance, yet their lack of intrinsic antibacterial activity remains a major limitation. Incorporating copper, an antibacterial and β-stabilising element, offers a promising strategy to enhance implant performance. This study investigates Ti-6Al-7Nb modified with 1–9 wt.% Cu via in situ alloying during metal-based laser powder bed fusion (PBF-LB/M), with the aim of assessing processability, microstructural evolution, and mechanical properties. Highly dense samples (&gt;99.9%) were produced across all Cu levels, though chemical homogeneity strongly depended on processing parameters. Increasing Cu content promoted β-phase stabilisation, Ti2Cu precipitation, and pronounced grain refinement. Hardness and yield strength increased nearly linearly with Cu addition, while ductility decreased sharply at ≥5 wt.% Cu due to intermetallic formation, hot cracking, and brittle fracture. These results illustrate both the opportunities and constraints of rapid alloy screening via PBF-LB/M. Overall, moderate Cu additions of 1–3 wt.% provide the most favourable balance between mechanical performance, manufacturability, and potential antibacterial functionality. These findings provide a clear guideline for the design of Cu-functionalised titanium implants and demonstrate the efficiency of in situ alloy screening for accelerated materials development.</jats:p>","lang":"eng"}],"issue":"12","publication":"Crystals","doi":"10.3390/cryst15121053","main_file_link":[{"url":"https://doi.org/10.3390/cryst15121053","open_access":"1"}],"article_number":"1053","language":[{"iso":"eng"}],"date_updated":"2025-12-12T14:02:13Z","publication_status":"published","intvolume":"        15","article_type":"original","year":"2025","title":"In Situ Alloying of Ti-6Al-7Nb with Copper Using Laser Powder Bed Fusion","publication_identifier":{"issn":["2073-4352"]},"author":[{"full_name":"Steinmeier, Paul","last_name":"Steinmeier","first_name":"Paul"},{"last_name":"Hoyer","first_name":"Kay-Peter","full_name":"Hoyer, Kay-Peter"},{"first_name":"Nelson Filipe","last_name":"Lopes Dias","full_name":"Lopes Dias, Nelson Filipe"},{"full_name":"Zielke, Reiner","last_name":"Zielke","first_name":"Reiner"},{"full_name":"Tillmann, Wolfgang","first_name":"Wolfgang","last_name":"Tillmann"},{"full_name":"Schaper, Mirko","last_name":"Schaper","first_name":"Mirko"}]},{"citation":{"chicago":"Fittkau, Niklas, Leon Bußemas, Kevin Malena, Sandra Gausemeier, and Ansgar Trächtler. “Regulatory-Compliant Energy-Saving Potential for the Passing Beam of Matrix LED Headlamps.” In <i>Proceedings of the 16th International Symposium on Automotive Lighting 2025</i>. Darmstadt, 2025. <a href=\"https://doi.org/10.26083/tuprints-00030840\">https://doi.org/10.26083/tuprints-00030840</a>.","short":"N. Fittkau, L. Bußemas, K. Malena, S. Gausemeier, A. Trächtler, in: Proceedings of the 16th International Symposium on Automotive Lighting 2025, Darmstadt, 2025.","ieee":"N. Fittkau, L. Bußemas, K. Malena, S. Gausemeier, and A. Trächtler, “Regulatory-compliant energy-saving potential for the passing beam of matrix LED headlamps,” presented at the 16th International Symposium on Automotive Lighting, Darmstadt, 2025, doi: <a href=\"https://doi.org/10.26083/tuprints-00030840\">10.26083/tuprints-00030840</a>.","apa":"Fittkau, N., Bußemas, L., Malena, K., Gausemeier, S., &#38; Trächtler, A. (2025). Regulatory-compliant energy-saving potential for the passing beam of matrix LED headlamps. <i>Proceedings of the 16th International Symposium on Automotive Lighting 2025</i>. 16th International Symposium on Automotive Lighting, Darmstadt. <a href=\"https://doi.org/10.26083/tuprints-00030840\">https://doi.org/10.26083/tuprints-00030840</a>","bibtex":"@inproceedings{Fittkau_Bußemas_Malena_Gausemeier_Trächtler_2025, place={Darmstadt}, title={Regulatory-compliant energy-saving potential for the passing beam of matrix LED headlamps}, DOI={<a href=\"https://doi.org/10.26083/tuprints-00030840\">10.26083/tuprints-00030840</a>}, booktitle={Proceedings of the 16th International Symposium on Automotive Lighting 2025}, author={Fittkau, Niklas and Bußemas, Leon and Malena, Kevin and Gausemeier, Sandra and Trächtler, Ansgar}, year={2025} }","ama":"Fittkau N, Bußemas L, Malena K, Gausemeier S, Trächtler A. Regulatory-compliant energy-saving potential for the passing beam of matrix LED headlamps. In: <i>Proceedings of the 16th International Symposium on Automotive Lighting 2025</i>. ; 2025. doi:<a href=\"https://doi.org/10.26083/tuprints-00030840\">10.26083/tuprints-00030840</a>","mla":"Fittkau, Niklas, et al. “Regulatory-Compliant Energy-Saving Potential for the Passing Beam of Matrix LED Headlamps.” <i>Proceedings of the 16th International Symposium on Automotive Lighting 2025</i>, 2025, doi:<a href=\"https://doi.org/10.26083/tuprints-00030840\">10.26083/tuprints-00030840</a>."},"publication":"Proceedings of the 16th International Symposium on Automotive Lighting 2025","project":[{"_id":"693","name":"Nachhaltigkeitsoptimiertes Life Cycle Assessment technologisch hochkomplexer Produkte am Beispiel Automobilbeleuchtung"}],"abstract":[{"text":"The carbon footprint of modern vehicles and their mechatronic systems is more\r\nimportant than ever. Research by the publicly funded Nalyses project and the HELLA\r\ncompany shows that the headlamps use phase makes a significant contribution to the life\r\ncycle footprint taking into account the current electricity mix [1]. Today, functionalities\r\nsuch as adaptive curve light or glare-free high beam ensure comfort and safety by\r\nassessing the state of the vehicle and evaluating the driving scenario ahead. In future,\r\nthis evaluation will be expanded and used to adapt the headlamp to the driving scenario\r\nin such a way that as little light as possible is emitted, but as much light as necessary. In\r\norder to achieve this goal, an overall evaluation of the regulatory compliant energy\r\nsaving potential is crucial in a first step and leads to constraints for a dynamic adaption\r\nwhile driving. In this paper, the potential is illustrated by evaluating UNECE Regulation\r\nNo. 149 and optimizing luminous intensity distributions. Depending on the different\r\nresolutions of matrix LED headlamps, this approach can result in a significantly lower\r\nluminous flux. On the other hand, the results are point-like distributions that raise the\r\nquestion of whether the regulation still provides for sensible minimum requirements for\r\nmodern matrix LED headlamps. The results are further presented in a simulated virtual\r\nenvironment with regard to the resulting luminance in different driving scenarios. We\r\nthen present an approach to integrate regulatory requirements into a control algorithm by\r\nsetting optimization constraints and saturating the control. Finally, we classify the found\r\nluminous intensity distributions qualitatively according to common lighting criteria. In summary, although the investigated minimum distributions are by no means desirable\r\nfor drivers themselves, they form the basis on which energy-saving distributions for\r\nilluminated areas and twilight scenarios could be adaptively controlled in the future.","lang":"eng"}],"place":"Darmstadt","date_created":"2025-09-24T08:56:38Z","oa":"1","department":[{"_id":"153"}],"type":"conference","conference":{"end_date":"2025-09-24","location":"Darmstadt","name":"16th International Symposium on Automotive Lighting","start_date":"2025-09-22"},"author":[{"full_name":"Fittkau, Niklas","first_name":"Niklas","orcid":"0009-0007-1281-4465","last_name":"Fittkau","id":"69890"},{"first_name":"Leon","last_name":"Bußemas","full_name":"Bußemas, Leon","id":"51118"},{"full_name":"Malena, Kevin","orcid":"0000-0003-1183-4679","first_name":"Kevin","last_name":"Malena","id":"36303"},{"full_name":"Gausemeier, Sandra","last_name":"Gausemeier","first_name":"Sandra","id":"17793"},{"id":"552","full_name":"Trächtler, Ansgar","last_name":"Trächtler","first_name":"Ansgar"}],"status":"public","year":"2025","title":"Regulatory-compliant energy-saving potential for the passing beam of matrix LED headlamps","date_updated":"2025-12-12T12:47:58Z","language":[{"iso":"eng"}],"_id":"61427","main_file_link":[{"open_access":"1","url":"https://tuprints.ulb.tu-darmstadt.de/30825/"}],"doi":"10.26083/tuprints-00030840","user_id":"69890"},{"quality_controlled":"1","abstract":[{"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.","lang":"eng"}],"publication":"The Journal of Adhesion","citation":{"chicago":"Gilich, Julian, Janika Kroos, Dominik Teutenberg, and Gerson Meschut. “Solvolytically Debondable Adhesive Systems – Potentials and Challenges for Repair and Recycling.” <i>The Journal of Adhesion</i>, 2025, 1–26. <a href=\"https://doi.org/10.1080/00218464.2025.2600590\">https://doi.org/10.1080/00218464.2025.2600590</a>.","short":"J. Gilich, J. Kroos, D. Teutenberg, G. Meschut, The Journal of Adhesion (2025) 1–26.","ieee":"J. Gilich, J. Kroos, D. Teutenberg, and G. Meschut, “Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling,” <i>The Journal of Adhesion</i>, pp. 1–26, 2025, doi: <a href=\"https://doi.org/10.1080/00218464.2025.2600590\">10.1080/00218464.2025.2600590</a>.","apa":"Gilich, J., Kroos, J., Teutenberg, D., &#38; Meschut, G. (2025). Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling. <i>The Journal of Adhesion</i>, 1–26. <a href=\"https://doi.org/10.1080/00218464.2025.2600590\">https://doi.org/10.1080/00218464.2025.2600590</a>","bibtex":"@article{Gilich_Kroos_Teutenberg_Meschut_2025, title={Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling}, DOI={<a href=\"https://doi.org/10.1080/00218464.2025.2600590\">10.1080/00218464.2025.2600590</a>}, 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} }","ama":"Gilich J, Kroos J, Teutenberg D, Meschut G. Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling. <i>The Journal of Adhesion</i>. Published online 2025:1-26. doi:<a href=\"https://doi.org/10.1080/00218464.2025.2600590\">10.1080/00218464.2025.2600590</a>","mla":"Gilich, Julian, et al. “Solvolytically Debondable Adhesive Systems – Potentials and Challenges for Repair and Recycling.” <i>The Journal of Adhesion</i>, Informa UK Limited, 2025, pp. 1–26, doi:<a href=\"https://doi.org/10.1080/00218464.2025.2600590\">10.1080/00218464.2025.2600590</a>."},"type":"journal_article","department":[{"_id":"157"}],"date_created":"2025-12-16T07:50:36Z","publication_status":"published","date_updated":"2025-12-16T07:53:52Z","title":"Solvolytically debondable adhesive systems – potentials and challenges for repair and recycling","status":"public","year":"2025","publication_identifier":{"issn":["0021-8464","1545-5823"]},"author":[{"id":"44391","last_name":"Gilich","first_name":"Julian","full_name":"Gilich, Julian"},{"id":"50198","last_name":"Kroos","first_name":"Janika","full_name":"Kroos, Janika"},{"id":"537","first_name":"Dominik","last_name":"Teutenberg","full_name":"Teutenberg, Dominik"},{"id":"32056","last_name":"Meschut","first_name":"Gerson","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson"}],"user_id":"44391","doi":"10.1080/00218464.2025.2600590","page":"1-26","_id":"63108","publisher":"Informa UK Limited","language":[{"iso":"eng"}]},{"date_created":"2025-12-18T09:07:38Z","type":"conference","department":[{"_id":"151"}],"publication":"2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA)","citation":{"ama":"Löwen A, Quirin D, Hesse M, Aimiyekagbon OK, Sextro W. Facilitating the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics of Technical Systems. In: <i>2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA)</i>. IEEE; 2025. doi:<a href=\"https://doi.org/10.1109/etfa65518.2025.11205799\">10.1109/etfa65518.2025.11205799</a>","bibtex":"@inproceedings{Löwen_Quirin_Hesse_Aimiyekagbon_Sextro_2025, title={Facilitating the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics of Technical Systems}, DOI={<a href=\"https://doi.org/10.1109/etfa65518.2025.11205799\">10.1109/etfa65518.2025.11205799</a>}, booktitle={2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA)}, publisher={IEEE}, author={Löwen, Alexander and Quirin, Dennis and Hesse, Marc and Aimiyekagbon, Osarenren Kennedy and Sextro, Walter}, year={2025} }","mla":"Löwen, Alexander, et al. “Facilitating the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics of Technical Systems.” <i>2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA)</i>, IEEE, 2025, doi:<a href=\"https://doi.org/10.1109/etfa65518.2025.11205799\">10.1109/etfa65518.2025.11205799</a>.","chicago":"Löwen, Alexander, Dennis Quirin, Marc Hesse, Osarenren Kennedy Aimiyekagbon, and Walter Sextro. “Facilitating the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics of Technical Systems.” In <i>2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA)</i>. IEEE, 2025. <a href=\"https://doi.org/10.1109/etfa65518.2025.11205799\">https://doi.org/10.1109/etfa65518.2025.11205799</a>.","short":"A. Löwen, D. Quirin, M. Hesse, O.K. Aimiyekagbon, W. Sextro, in: 2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA), IEEE, 2025.","apa":"Löwen, A., Quirin, D., Hesse, M., Aimiyekagbon, O. K., &#38; Sextro, W. (2025). Facilitating the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics of Technical Systems. <i>2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA)</i>. 2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA), Porto. <a href=\"https://doi.org/10.1109/etfa65518.2025.11205799\">https://doi.org/10.1109/etfa65518.2025.11205799</a>","ieee":"A. Löwen, D. Quirin, M. Hesse, O. K. Aimiyekagbon, and W. Sextro, “Facilitating the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics of Technical Systems,” presented at the 2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA), Porto, 2025, doi: <a href=\"https://doi.org/10.1109/etfa65518.2025.11205799\">10.1109/etfa65518.2025.11205799</a>."},"related_material":{"link":[{"url":"https://ieeexplore.ieee.org/document/11205799","relation":"confirmation"}]},"abstract":[{"lang":"eng","text":"The integration of data-driven models and specifically machine learning for conditon monitoring and predictive maintenance into companies, especially small and medium-sized enterprises, offers significant opportunities in reducing costs, operating more sustainably, and maintaining long-term competitiveness. However, many small and medium-sized enterprises lack the necessary resources and expertise to derive knowledge from data and integrate their own machine learning based solutions. To address this challenge, a framework is presented that enables the automated generation of data-driven models with a particular focus on condition monitoring and predictive maintenance, but applicable to other use cases as well. Using a dataset from the 2022 data challenge of the prognostics and health management society, it is demonstrated that the framework can generate high-performing models, achieving F1-scores up to 0.998, exemplarily for a classification task."}],"project":[{"_id":"1483","name":"Industrie 4.0 Ökosystem für den automatisierten Einsatz von datengetriebenen Services (I4.0AutoServ)"}],"_id":"63193","publisher":"IEEE","language":[{"iso":"eng"}],"doi":"10.1109/etfa65518.2025.11205799","user_id":"47233","title":"Facilitating the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics of Technical Systems","status":"public","year":"2025","conference":{"name":"2025 IEEE 30th International Conference on Emerging Technologies and Factory Automation (ETFA)","location":"Porto"},"author":[{"id":"47233","full_name":"Löwen, Alexander","last_name":"Löwen","first_name":"Alexander"},{"first_name":"Dennis","last_name":"Quirin","full_name":"Quirin, Dennis"},{"first_name":"Marc","last_name":"Hesse","full_name":"Hesse, Marc"},{"id":"9557","last_name":"Aimiyekagbon","first_name":"Osarenren Kennedy","full_name":"Aimiyekagbon, Osarenren Kennedy"},{"id":"21220","full_name":"Sextro, Walter","last_name":"Sextro","first_name":"Walter"}],"date_updated":"2025-12-18T09:12:48Z","publication_status":"published"},{"user_id":"7888","volume":9,"_id":"63347","publisher":"MDPI AG","status":"public","quality_controlled":"1","citation":{"short":"E. Wiens, D. Hijazi, M. Jüttner, W. Homberg, M.D. Kensy, W. Tillmann, Journal of Manufacturing and Materials Processing 9 (2025).","chicago":"Wiens, Eugen, Dina Hijazi, Maik Jüttner, Werner Homberg, Mark Dennis Kensy, and Wolfgang Tillmann. “In Situ Investigation of the Frictional Behaviour in Friction-Spinning.” <i>Journal of Manufacturing and Materials Processing</i> 9, no. 9 (2025). <a href=\"https://doi.org/10.3390/jmmp9090302\">https://doi.org/10.3390/jmmp9090302</a>.","ieee":"E. Wiens, D. Hijazi, M. Jüttner, W. Homberg, M. D. Kensy, and W. Tillmann, “In Situ Investigation of the Frictional Behaviour in Friction-Spinning,” <i>Journal of Manufacturing and Materials Processing</i>, vol. 9, no. 9, Art. no. 302, 2025, doi: <a href=\"https://doi.org/10.3390/jmmp9090302\">10.3390/jmmp9090302</a>.","apa":"Wiens, E., Hijazi, D., Jüttner, M., Homberg, W., Kensy, M. D., &#38; Tillmann, W. (2025). In Situ Investigation of the Frictional Behaviour in Friction-Spinning. <i>Journal of Manufacturing and Materials Processing</i>, <i>9</i>(9), Article 302. <a href=\"https://doi.org/10.3390/jmmp9090302\">https://doi.org/10.3390/jmmp9090302</a>","bibtex":"@article{Wiens_Hijazi_Jüttner_Homberg_Kensy_Tillmann_2025, title={In Situ Investigation of the Frictional Behaviour in Friction-Spinning}, volume={9}, DOI={<a href=\"https://doi.org/10.3390/jmmp9090302\">10.3390/jmmp9090302</a>}, number={9302}, journal={Journal of Manufacturing and Materials Processing}, publisher={MDPI AG}, author={Wiens, Eugen and Hijazi, Dina and Jüttner, Maik and Homberg, Werner and Kensy, Mark Dennis and Tillmann, Wolfgang}, year={2025} }","ama":"Wiens E, Hijazi D, Jüttner M, Homberg W, Kensy MD, Tillmann W. In Situ Investigation of the Frictional Behaviour in Friction-Spinning. <i>Journal of Manufacturing and Materials Processing</i>. 2025;9(9). doi:<a href=\"https://doi.org/10.3390/jmmp9090302\">10.3390/jmmp9090302</a>","mla":"Wiens, Eugen, et al. “In Situ Investigation of the Frictional Behaviour in Friction-Spinning.” <i>Journal of Manufacturing and Materials Processing</i>, vol. 9, no. 9, 302, MDPI AG, 2025, doi:<a href=\"https://doi.org/10.3390/jmmp9090302\">10.3390/jmmp9090302</a>."},"doi":"10.3390/jmmp9090302","article_number":"302","language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2025-12-22T10:39:34Z","intvolume":"         9","title":"In Situ Investigation of the Frictional Behaviour in Friction-Spinning","year":"2025","author":[{"full_name":"Wiens, Eugen","last_name":"Wiens","first_name":"Eugen","id":"7888"},{"full_name":"Hijazi, Dina","last_name":"Hijazi","first_name":"Dina"},{"full_name":"Jüttner, Maik","first_name":"Maik","last_name":"Jüttner"},{"last_name":"Homberg","first_name":"Werner","full_name":"Homberg, Werner","id":"233"},{"full_name":"Kensy, Mark Dennis","last_name":"Kensy","first_name":"Mark Dennis"},{"first_name":"Wolfgang","last_name":"Tillmann","full_name":"Tillmann, Wolfgang"}],"publication_identifier":{"issn":["2504-4494"]},"type":"journal_article","department":[{"_id":"156"}],"date_created":"2025-12-19T10:05:03Z","abstract":[{"text":"<jats:p>Friction-spinning is an incremental thermomechanical forming process that has huge potential due to its simple yet effective mechanism of utilising friction between a rotating workpiece and a forming tool to increase the workpiece’s temperature, which reduces the required forces and increases formability during the forming process. Despite the simplicity of the process’s setup, the thermomechanical loads and high relative velocities involved, especially in the contact zone, make the application of classical methods for characterising friction inaccurate. It is therefore essential to find a way to describe the frictional behaviour under real process conditions to be able to gain a holistic understanding of the process and the effect of the adjustable parameters on the outcome, especially the temperature. To achieve this goal, an experimental setup that considers the actual process boundary conditions in forming tubes made of EN AW-6060 was used to measure in situ normal and frictional forces, in addition to process temperatures, under varying rotational speed and feed rate values.</jats:p>","lang":"eng"}],"issue":"9","publication":"Journal of Manufacturing and Materials Processing"},{"language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1"}],"doi":"10.21741/9781644903551-42","author":[{"id":"65085","last_name":"Yang","orcid":"0000-0001-9201-9304","first_name":"Keke","full_name":"Yang, Keke"},{"first_name":"Max","last_name":"Biegler","full_name":"Biegler, Max"},{"full_name":"Happe, Linus","first_name":"Linus","last_name":"Happe"},{"id":"30228","full_name":"Striewe, Marius","last_name":"Striewe","first_name":"Marius"},{"id":"5974","full_name":"Olfert, Viktoria","last_name":"Olfert","first_name":"Viktoria"},{"full_name":"Hein, David","first_name":"David","last_name":"Hein","id":"7728"},{"last_name":"Rethmeier","first_name":"Michael ","full_name":"Rethmeier, Michael "},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","first_name":"Gerson","orcid":"0000-0002-2763-1246"}],"publication_identifier":{"issn":["2474-395X"]},"title":"Influence of Liquid metal embrittlement on load-bearing capacity of resistance spot welds under crash loads: A study based on S-Rail components","year":"2025","intvolume":"        52","publication_status":"published","date_updated":"2025-12-26T13:44:36Z","date_created":"2025-03-25T07:59:49Z","file":[{"relation":"main_file","date_updated":"2025-03-25T08:02:30Z","file_name":"Shemat.pdf","access_level":"closed","file_size":1901767,"file_id":"59092","content_type":"application/pdf","success":1,"creator":"kekeyang","date_created":"2025-03-25T08:02:30Z"}],"department":[{"_id":"157"}],"type":"conference","publication":"Materials Research Proceedings","license":"https://creativecommons.org/licenses/by-nc/3.0/","abstract":[{"lang":"eng","text":"<jats:p>Abstract. Liquid Metal Embrittlement (LME) cracking is a well-documented issue encountered during resistance spot welding (RSW) of zinc-coated advanced high-strength steels (AHSS) in automotive manufacturing. Given that existing research has predominantly focused on laboratory-scale samples and lacks investigation into the load-bearing capacity of joints under crash conditions, this study aims to fill these gaps by analyzing third-generation zinc-coated AHSS. S-Rail components were produced through stamping to replicate real-world manufacturing conditions and geometries of automotive parts. To account for the disturbances typically encountered in production, samples with LME cracks were intentionally fabricated. Subsequently, a modified three-point bending test, assisted by numerical simulations, was developed to effectively apply loads to the weld spots of the S-Rail components. Results from crash tests demonstrated that observed light crack severity does not significantly compromise the joint's load-bearing capacity or lead to earlier joint failure.</jats:p>"}],"_id":"59091","publisher":"Materials Research Forum LLC","volume":52,"user_id":"65085","ddc":["600"],"status":"public","has_accepted_license":"1","oa":"1","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: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-42\">10.21741/9781644903551-42</a>","bibtex":"@inproceedings{Yang_Biegler_Happe_Striewe_Olfert_Hein_Rethmeier_Meschut_2025, title={Influence of Liquid metal embrittlement on load-bearing capacity of resistance spot welds under crash loads: A study based on S-Rail components}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-42\">10.21741/9781644903551-42</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Yang, Keke and Biegler, Max and Happe, Linus and Striewe, Marius and Olfert, Viktoria and Hein, David and Rethmeier, Michael  and Meschut, Gerson}, year={2025} }","mla":"Yang, Keke, et al. “Influence of Liquid Metal Embrittlement on Load-Bearing Capacity of Resistance Spot Welds under Crash Loads: A Study Based on S-Rail Components.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-42\">10.21741/9781644903551-42</a>.","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.","chicago":"Yang, Keke, Max Biegler, Linus Happe, Marius Striewe, Viktoria Olfert, David Hein, Michael  Rethmeier, and Gerson Meschut. “Influence of Liquid Metal Embrittlement on Load-Bearing Capacity of Resistance Spot Welds under Crash Loads: A Study Based on S-Rail Components.” In <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-42\">https://doi.org/10.21741/9781644903551-42</a>.","apa":"Yang, K., Biegler, M., Happe, L., Striewe, M., Olfert, V., Hein, D., Rethmeier, M., &#38; Meschut, G. (2025). Influence of Liquid metal embrittlement on load-bearing capacity of resistance spot welds under crash loads: A study based on S-Rail components. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-42\">https://doi.org/10.21741/9781644903551-42</a>","ieee":"K. Yang <i>et al.</i>, “Influence of Liquid metal embrittlement on load-bearing capacity of resistance spot welds under crash loads: A study based on S-Rail components,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-42\">10.21741/9781644903551-42</a>."},"file_date_updated":"2025-03-25T08:02:30Z","quality_controlled":"1"},{"oa":"1","citation":{"apa":"Olfert, V., Yang, K., Gollnick, M., Krause, J., Hein, D., &#38; Meschut, G. (2025). Analysis of fatigue behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry. <i>Materials Research Proceedings</i>, <i>54</i>. <a href=\"https://doi.org/10.21741/9781644903599-154\">https://doi.org/10.21741/9781644903599-154</a>","ieee":"V. Olfert, K. Yang, M. Gollnick, J. Krause, D. Hein, and G. Meschut, “Analysis of fatigue behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry,” in <i>Materials Research Proceedings</i>, 2025, vol. 54, doi: <a href=\"https://doi.org/10.21741/9781644903599-154\">10.21741/9781644903599-154</a>.","chicago":"Olfert, Viktoria, Keke Yang, Maik Gollnick, Jacob Krause, David Hein, and Gerson Meschut. “Analysis of Fatigue Behaviour of Self-Piercing Riveted Joints under Cyclic Loading Using Laser Vibrometry.” In <i>Materials Research Proceedings</i>, Vol. 54. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903599-154\">https://doi.org/10.21741/9781644903599-154</a>.","short":"V. Olfert, K. Yang, M. Gollnick, J. Krause, D. Hein, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","mla":"Olfert, Viktoria, et al. “Analysis of Fatigue Behaviour of Self-Piercing Riveted Joints under Cyclic Loading Using Laser Vibrometry.” <i>Materials Research Proceedings</i>, vol. 54, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903599-154\">10.21741/9781644903599-154</a>.","ama":"Olfert V, Yang K, Gollnick M, Krause J, Hein D, Meschut G. Analysis of fatigue behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry. In: <i>Materials Research Proceedings</i>. Vol 54. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903599-154\">10.21741/9781644903599-154</a>","bibtex":"@inproceedings{Olfert_Yang_Gollnick_Krause_Hein_Meschut_2025, title={Analysis of fatigue behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry}, volume={54}, DOI={<a href=\"https://doi.org/10.21741/9781644903599-154\">10.21741/9781644903599-154</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Olfert, Viktoria and Yang, Keke and Gollnick, Maik and Krause, Jacob and Hein, David and Meschut, Gerson}, year={2025} }"},"quality_controlled":"1","_id":"60604","publisher":"Materials Research Forum LLC","volume":54,"user_id":"65085","status":"public","date_created":"2025-07-14T13:25:26Z","department":[{"_id":"157"}],"type":"conference","publication":"Materials Research Proceedings","abstract":[{"text":"<jats:p>Abstract. In the field of online condition monitoring, non-destructive testing methods using active acoustic testing [1] emerged as innovative tools. These techniques are particularly effective because damage in joined structures leads to significant changes in their vibrational characteristics. However, the consistent use of online condition monitoring through active acoustic testing combined with complex pattern recognition for early crack detection in joined components has not yet been fully established. This research aims to develop an online crack detection system employing pattern recognition techniques under cyclic loading during fatigue tests, utilizing non-contact active acoustic testing with laser vibrometry. Due to the wide range of materials that can be joined, mechanical joining processes can be used in many different industry branches. Self-pierce riveting (SPR), in particular, is a well-established joining process. Therefore, the investigations for online crack detection initially focus on SPR joints. To achieve this, the fatigue behavior of SPR joints in a lap-shear configuration was characterized. Experimental fatigue testing demonstrated that SPR joint failure occurs either through cracks propagating in the sheet material away from the rivet or in the rivet foot, depending on the material combination. Laser vibrometry has been successfully used as a crack detection system and has proven to be effective in detecting crack initiation in SPR joints. Cracks can be detected without contact regardless of the material combination, the damage location, the size of the damage, or the type of damage.  The optimization of the crack detection system involved several key enhancements, including adjusting data acquisition to improve crack detection, incorporating principal component analysis (PCA) to reduce dimensionality, and implementing a classification model based on a global training dataset. An intuitive, problem-specific software demonstrator for analyzing the crack initiation behavior of SPR joints under cyclic loading was developed and iteratively optimized. Future work will focus on the implementation of an autoencoder network to further enhance crack detection capabilities.</jats:p>","lang":"eng"}],"language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1"}],"doi":"10.21741/9781644903599-154","publication_identifier":{"issn":["2474-395X"]},"author":[{"id":"5974","full_name":"Olfert, Viktoria","first_name":"Viktoria","last_name":"Olfert"},{"first_name":"Keke","orcid":"0000-0001-9201-9304","last_name":"Yang","full_name":"Yang, Keke","id":"65085"},{"full_name":"Gollnick, Maik","last_name":"Gollnick","first_name":"Maik"},{"first_name":"Jacob","last_name":"Krause","full_name":"Krause, Jacob"},{"first_name":"David","last_name":"Hein","full_name":"Hein, David","id":"7728"},{"id":"32056","first_name":"Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","full_name":"Meschut, Gerson"}],"year":"2025","title":"Analysis of fatigue behaviour of self-piercing riveted joints under cyclic loading using laser vibrometry","intvolume":"        54","date_updated":"2025-12-26T13:45:01Z","publication_status":"published"},{"doi":"10.5162/ultrasonic2025/a18-a4","user_id":"11829","publisher":"AMA Service GmbH","_id":"62299","language":[{"iso":"eng"}],"page":"138–141","date_updated":"2026-01-05T08:00:48Z","author":[{"id":"44026","full_name":"Friesen, Olga","first_name":"Olga","last_name":"Friesen"},{"full_name":"Scheidemann, Claus","last_name":"Scheidemann","first_name":"Claus","id":"38259"},{"id":"11829","full_name":"Claes, Leander","first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes"},{"last_name":"Hemsel","first_name":"Tobias","full_name":"Hemsel, Tobias","id":"210"},{"full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd","id":"213"}],"title":"Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer","status":"public","year":"2025","department":[{"_id":"49"},{"_id":"151"}],"type":"conference","place":"Paderborn","date_created":"2025-11-25T12:23:06Z","project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"citation":{"ieee":"O. Friesen, C. Scheidemann, L. Claes, T. Hemsel, and B. Henning, “Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer,” in <i>2025 International Congress on Ultrasonics</i>, 2025, pp. 138–141, doi: <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a4\">10.5162/ultrasonic2025/a18-a4</a>.","apa":"Friesen, O., Scheidemann, C., Claes, L., Hemsel, T., &#38; Henning, B. (2025). Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer. <i>2025 International Congress on Ultrasonics</i>, 138–141. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a4\">https://doi.org/10.5162/ultrasonic2025/a18-a4</a>","chicago":"Friesen, Olga, Claus Scheidemann, Leander Claes, Tobias Hemsel, and Bernd Henning. “Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer.” In <i>2025 International Congress on Ultrasonics</i>, 138–141. 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