[{"date_created":"2025-05-20T12:50:34Z","type":"conference","publication":"Materials Research Proceedings","abstract":[{"lang":"eng","text":"This study focuses on damage modeling across different mechanical joining processes within a process chain, specifically using clinching and self-pierce riveting (SPR). The aim is to apply a comprehensive model that captures the damage mechanisms and interactions in these technologies, optimizing them for enhanced performance and durability of aluminum joints. A GISSMO damage model was utilized, based on the stress states occurring during the joining process and a newly introduced damage testing method. This model was applied to both clinching and SPR processes. A detailed analysis of the stress states provided insights into their effect on the material. By incorporating these insights into the GISSMO model, improved accuracy in damage prediction was achieved. The model's application to clinching and SPR demonstrated its effectiveness in optimizing aluminum joint performance and durability, ensuring that the processes can be finely tuned to minimize damage and enhance joint quality.</jats:p>"}],"language":[{"iso":"eng"}],"doi":"10.21741/9781644903551-19","author":[{"full_name":"Harabati, Özcan","first_name":"Özcan","last_name":"Harabati","id":"54972"},{"last_name":"Bielak","first_name":"Christian Roman","full_name":"Bielak, Christian Roman","id":"34782"},{"last_name":"Böhnke","first_name":"Max","full_name":"Böhnke, Max","id":"45779"},{"full_name":"Schlichter, Malte Christian","last_name":"Schlichter","first_name":"Malte Christian","id":"61977"},{"first_name":"Marc","last_name":"Brockmeier","full_name":"Brockmeier, Marc"},{"id":"7850","last_name":"Bobbert","first_name":"Mathias","full_name":"Bobbert, Mathias"},{"full_name":"Meschut, Gerson","first_name":"Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","id":"32056"}],"publication_identifier":{"issn":["2474-395X"]},"title":"Cross-process damage modeling: A process-chain case study of clinching and self-pierced riveting for aluminum connections","year":"2025","intvolume":"        52","publication_status":"published","date_updated":"2026-02-24T13:59:43Z","citation":{"apa":"Harabati, Ö., Bielak, C. R., Böhnke, M., Schlichter, M. C., Brockmeier, M., Bobbert, M., &#38; Meschut, G. (2025). Cross-process damage modeling: A process-chain case study of clinching and self-pierced riveting for aluminum connections. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-19\">https://doi.org/10.21741/9781644903551-19</a>","ieee":"Ö. Harabati <i>et al.</i>, “Cross-process damage modeling: A process-chain case study of clinching and self-pierced riveting for aluminum connections,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-19\">10.21741/9781644903551-19</a>.","chicago":"Harabati, Özcan, Christian Roman Bielak, Max Böhnke, Malte Christian Schlichter, Marc Brockmeier, Mathias Bobbert, and Gerson Meschut. “Cross-Process Damage Modeling: A Process-Chain Case Study of Clinching and Self-Pierced Riveting for Aluminum Connections.” In <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-19\">https://doi.org/10.21741/9781644903551-19</a>.","short":"Ö. Harabati, C.R. Bielak, M. Böhnke, M.C. Schlichter, M. Brockmeier, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","mla":"Harabati, Özcan, et al. “Cross-Process Damage Modeling: A Process-Chain Case Study of Clinching and Self-Pierced Riveting for Aluminum Connections.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-19\">10.21741/9781644903551-19</a>.","ama":"Harabati Ö, Bielak CR, Böhnke M, et al. Cross-process damage modeling: A process-chain case study of clinching and self-pierced riveting for aluminum connections. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-19\">10.21741/9781644903551-19</a>","bibtex":"@inproceedings{Harabati_Bielak_Böhnke_Schlichter_Brockmeier_Bobbert_Meschut_2025, title={Cross-process damage modeling: A process-chain case study of clinching and self-pierced riveting for aluminum connections}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-19\">10.21741/9781644903551-19</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Harabati, Özcan and Bielak, Christian Roman and Böhnke, Max and Schlichter, Malte Christian and Brockmeier, Marc and Bobbert, Mathias and Meschut, Gerson}, year={2025} }"},"project":[{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"},{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"}],"quality_controlled":"1","publisher":"Materials Research Forum LLC","_id":"60002","volume":52,"user_id":"7850","status":"public"},{"publication_identifier":{"issn":["2666-3309"]},"author":[{"first_name":"Johannes","last_name":"Friedlein","full_name":"Friedlein, Johannes"},{"last_name":"Lüder","first_name":"Stephan","full_name":"Lüder, Stephan"},{"last_name":"Kalich","first_name":"Jan","full_name":"Kalich, Jan"},{"last_name":"Schmale","first_name":"Hans Christian","full_name":"Schmale, Hans Christian"},{"id":"45779","last_name":"Böhnke","first_name":"Max","full_name":"Böhnke, Max"},{"id":"61977","last_name":"Schlichter","first_name":"Malte Christian","full_name":"Schlichter, Malte Christian"},{"id":"7850","full_name":"Bobbert, Mathias","last_name":"Bobbert","first_name":"Mathias"},{"id":"32056","full_name":"Meschut, Gerson","first_name":"Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246"},{"full_name":"Steinmann, Paul","last_name":"Steinmann","first_name":"Paul"},{"full_name":"Mergheim, Julia","first_name":"Julia","last_name":"Mergheim"}],"year":"2025","title":"Application of stress-state-dependent ductile damage and failure model to clinch joining for a wide range of tool and material combinations","intvolume":"        11","publication_status":"published","date_updated":"2026-02-24T14:00:55Z","language":[{"iso":"eng"}],"article_number":"100299","doi":"10.1016/j.jajp.2025.100299","publication":"Journal of Advanced Joining Processes","date_created":"2025-04-15T11:00:56Z","type":"journal_article","status":"public","_id":"59584","publisher":"Elsevier BV","volume":11,"user_id":"7850","citation":{"bibtex":"@article{Friedlein_Lüder_Kalich_Schmale_Böhnke_Schlichter_Bobbert_Meschut_Steinmann_Mergheim_2025, title={Application of stress-state-dependent ductile damage and failure model to clinch joining for a wide range of tool and material combinations}, volume={11}, DOI={<a href=\"https://doi.org/10.1016/j.jajp.2025.100299\">10.1016/j.jajp.2025.100299</a>}, number={100299}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Friedlein, Johannes and Lüder, Stephan and Kalich, Jan and Schmale, Hans Christian and Böhnke, Max and Schlichter, Malte Christian and Bobbert, Mathias and Meschut, Gerson and Steinmann, Paul and Mergheim, Julia}, year={2025} }","ama":"Friedlein J, Lüder S, Kalich J, et al. Application of stress-state-dependent ductile damage and failure model to clinch joining for a wide range of tool and material combinations. <i>Journal of Advanced Joining Processes</i>. 2025;11. doi:<a href=\"https://doi.org/10.1016/j.jajp.2025.100299\">10.1016/j.jajp.2025.100299</a>","short":"J. Friedlein, S. Lüder, J. Kalich, H.C. Schmale, M. Böhnke, M.C. Schlichter, M. Bobbert, G. Meschut, P. Steinmann, J. Mergheim, Journal of Advanced Joining Processes 11 (2025).","chicago":"Friedlein, Johannes, Stephan Lüder, Jan Kalich, Hans Christian Schmale, Max Böhnke, Malte Christian Schlichter, Mathias Bobbert, Gerson Meschut, Paul Steinmann, and Julia Mergheim. “Application of Stress-State-Dependent Ductile Damage and Failure Model to Clinch Joining for a Wide Range of Tool and Material Combinations.” <i>Journal of Advanced Joining Processes</i> 11 (2025). <a href=\"https://doi.org/10.1016/j.jajp.2025.100299\">https://doi.org/10.1016/j.jajp.2025.100299</a>.","ieee":"J. Friedlein <i>et al.</i>, “Application of stress-state-dependent ductile damage and failure model to clinch joining for a wide range of tool and material combinations,” <i>Journal of Advanced Joining Processes</i>, vol. 11, Art. no. 100299, 2025, doi: <a href=\"https://doi.org/10.1016/j.jajp.2025.100299\">10.1016/j.jajp.2025.100299</a>.","mla":"Friedlein, Johannes, et al. “Application of Stress-State-Dependent Ductile Damage and Failure Model to Clinch Joining for a Wide Range of Tool and Material Combinations.” <i>Journal of Advanced Joining Processes</i>, vol. 11, 100299, Elsevier BV, 2025, doi:<a href=\"https://doi.org/10.1016/j.jajp.2025.100299\">10.1016/j.jajp.2025.100299</a>.","apa":"Friedlein, J., Lüder, S., Kalich, J., Schmale, H. C., Böhnke, M., Schlichter, M. C., Bobbert, M., Meschut, G., Steinmann, P., &#38; Mergheim, J. (2025). Application of stress-state-dependent ductile damage and failure model to clinch joining for a wide range of tool and material combinations. <i>Journal of Advanced Joining Processes</i>, <i>11</i>, Article 100299. <a href=\"https://doi.org/10.1016/j.jajp.2025.100299\">https://doi.org/10.1016/j.jajp.2025.100299</a>"},"project":[{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"},{"name":"TRR 285 – A04: TRR 285 - Subproject A04","_id":"138"},{"_id":"139","name":"TRR 285 – A05: TRR 285 - Subproject A05"},{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"}],"quality_controlled":"1"},{"publication":"Materials Research Proceedings","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."}],"date_created":"2025-06-27T08:23:00Z","department":[{"_id":"43"},{"_id":"157"}],"type":"conference","publication_identifier":{"issn":["2474-395X"]},"author":[{"id":"44935","last_name":"Holtkamp","first_name":"Pia Katharina","full_name":"Holtkamp, Pia Katharina"},{"id":"34782","last_name":"Bielak","first_name":"Christian Roman","full_name":"Bielak, Christian Roman"},{"id":"7850","full_name":"Bobbert, Mathias","first_name":"Mathias","last_name":"Bobbert"},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"year":"2025","title":"Simulation of the joining process of graded hardened multi-range capable rivets","intvolume":"        54","publication_status":"published","date_updated":"2026-02-24T14:12:10Z","language":[{"iso":"eng"}],"doi":"10.21741/9781644903599-153","citation":{"short":"P.K. Holtkamp, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 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 <i>Materials Research Proceedings</i>, Vol. 54. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903599-153\">https://doi.org/10.21741/9781644903599-153</a>.","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 <i>Materials Research Proceedings</i>, 2025, vol. 54, doi: <a href=\"https://doi.org/10.21741/9781644903599-153\">10.21741/9781644903599-153</a>.","apa":"Holtkamp, P. K., Bielak, C. R., Bobbert, M., &#38; Meschut, G. (2025). Simulation of the joining process of graded hardened multi-range capable rivets. <i>Materials Research Proceedings</i>, <i>54</i>. <a href=\"https://doi.org/10.21741/9781644903599-153\">https://doi.org/10.21741/9781644903599-153</a>","bibtex":"@inproceedings{Holtkamp_Bielak_Bobbert_Meschut_2025, title={Simulation of the joining process of graded hardened multi-range capable rivets}, volume={54}, DOI={<a href=\"https://doi.org/10.21741/9781644903599-153\">10.21741/9781644903599-153</a>}, 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} }","ama":"Holtkamp PK, Bielak CR, Bobbert M, Meschut G. Simulation of the joining process of graded hardened multi-range capable rivets. In: <i>Materials Research Proceedings</i>. Vol 54. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903599-153\">10.21741/9781644903599-153</a>","mla":"Holtkamp, Pia Katharina, et al. “Simulation of the Joining Process of Graded Hardened Multi-Range Capable Rivets.” <i>Materials Research Proceedings</i>, vol. 54, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903599-153\">10.21741/9781644903599-153</a>."},"project":[{"_id":"130","name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"}],"quality_controlled":"1","status":"public","publisher":"Materials Research Forum LLC","_id":"60440","volume":54,"user_id":"7850"},{"language":[{"iso":"ger"}],"intvolume":"        43","publication_status":"published","date_updated":"2026-02-24T15:12:59Z","publication_identifier":{"isbn":["978-3-88355-454-9"]},"author":[{"id":"114764","first_name":"Alrik","last_name":"Dargel","full_name":"Dargel, Alrik"},{"id":"83408","full_name":"Köhler, Daniel","first_name":"Daniel","last_name":"Köhler"},{"full_name":"Gude, Maik","last_name":"Gude","first_name":"Maik"},{"last_name":"Kupfer","first_name":"Robert","full_name":"Kupfer, Robert"}],"year":"2025","title":"In situ CT unter Temperatur: Thermokammer für thermoplastische FKV-Fügeprozesse","keyword":["in situ CT","Thermokammer","Thermoplastische FKV"],"type":"conference","date_created":"2026-02-20T14:17:33Z","file":[{"content_type":"application/pdf","success":1,"file_id":"64564","file_size":398450,"access_level":"closed","file_name":"V-31-Dargel_v03.pdf","date_updated":"2026-02-20T14:14:36Z","relation":"main_file","date_created":"2026-02-20T14:14:36Z","creator":"adargel"}],"abstract":[{"text":"Für das Verständnis und die Weiterentwicklung temperaturgestützter mechanischer Fü-geprozesse mit thermoplastischen Faser-Kunststoff-Verbunden (FKV) ist die zerstörungsfreie Analyse der Materialstruktur im Inneren des Fügepunktes während der Entstehung und Belastung erforderlich. Die Kombination aus Prüfung unter Temperatureinfluss und in situ Computertomographie (CT) eröffnet neue Möglichkeiten für die Fügeprozessanalyse. Dazu wurde dazu eine Thermokammer entwickelt und in eine bestehende in situ CT-Anlage integriert. Anwendungsszenarien sind die Herstellung und Prüfung von Fügepunkten unter Temperatur. Die Erwärmung erfolgt über einzeln regelbare Heizzonen, welche eine gezielte Temperaturführung über die gesamte Probengeometrie ermöglichen. Die Temperaturkurve eines Aufheizversuchs, sowie eine Röntgenprojektion einer Probe innerhalb der Thermokammer validie-ren die Konstruktion.","lang":"ger"}],"publication":"Tagungsband 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025","volume":43,"editor":[{"last_name":"Zimmermann","first_name":"Martina","full_name":"Zimmermann, Martina"}],"user_id":"114764","ddc":["620"],"publisher":"Deutsche Gesellschaft für Materialkunde e.V. (DGM)","_id":"64562","page":"165-170","has_accepted_license":"1","conference":{"end_date":"2025-11-28","location":"Dresden","name":"43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025","start_date":"2025-11-27"},"status":"public","place":"Sankt Augustin","project":[{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"},{"_id":"148","name":"TRR 285 - Subproject C04"}],"citation":{"mla":"Dargel, Alrik, et al. “In situ CT unter Temperatur: Thermokammer für thermoplastische FKV-Fügeprozesse.” <i>Tagungsband 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, edited by Martina Zimmermann, vol. 43, Deutsche Gesellschaft für Materialkunde e.V. (DGM), 2025, pp. 165–70.","ama":"Dargel A, Köhler D, Gude M, Kupfer R. In situ CT unter Temperatur: Thermokammer für thermoplastische FKV-Fügeprozesse. In: Zimmermann M, ed. <i>Tagungsband 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>. Vol 43. Deutsche Gesellschaft für Materialkunde e.V. (DGM); 2025:165-170.","bibtex":"@inproceedings{Dargel_Köhler_Gude_Kupfer_2025, place={Sankt Augustin}, title={In situ CT unter Temperatur: Thermokammer für thermoplastische FKV-Fügeprozesse}, volume={43}, booktitle={Tagungsband 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025}, publisher={Deutsche Gesellschaft für Materialkunde e.V. (DGM)}, author={Dargel, Alrik and Köhler, Daniel and Gude, Maik and Kupfer, Robert}, editor={Zimmermann, Martina}, year={2025}, pages={165–170} }","apa":"Dargel, A., Köhler, D., Gude, M., &#38; Kupfer, R. (2025). In situ CT unter Temperatur: Thermokammer für thermoplastische FKV-Fügeprozesse. In M. Zimmermann (Ed.), <i>Tagungsband 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i> (Vol. 43, pp. 165–170). Deutsche Gesellschaft für Materialkunde e.V. (DGM).","ieee":"A. Dargel, D. Köhler, M. Gude, and R. Kupfer, “In situ CT unter Temperatur: Thermokammer für thermoplastische FKV-Fügeprozesse,” in <i>Tagungsband 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, Dresden, 2025, vol. 43, pp. 165–170.","short":"A. Dargel, D. Köhler, M. Gude, R. Kupfer, in: M. Zimmermann (Ed.), Tagungsband 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025, Deutsche Gesellschaft für Materialkunde e.V. (DGM), Sankt Augustin, 2025, pp. 165–170.","chicago":"Dargel, Alrik, Daniel Köhler, Maik Gude, and Robert Kupfer. “In situ CT unter Temperatur: Thermokammer für thermoplastische FKV-Fügeprozesse.” In <i>Tagungsband 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, edited by Martina Zimmermann, 43:165–70. Sankt Augustin: Deutsche Gesellschaft für Materialkunde e.V. (DGM), 2025."},"file_date_updated":"2026-02-20T14:14:36Z"},{"_id":"61767","publisher":"Springer Science and Business Media LLC","user_id":"114764","volume":44,"status":"public","citation":{"chicago":"Köhler, Daniel, Alrik Dargel, Juliane Troschitz, Maik Gude, and Robert Kupfer. “In Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns of Radiopaque Materials.” <i>Journal of Nondestructive Evaluation</i> 44, no. 4 (2025). <a href=\"https://doi.org/10.1007/s10921-025-01270-1\">https://doi.org/10.1007/s10921-025-01270-1</a>.","short":"D. Köhler, A. Dargel, J. Troschitz, M. Gude, R. Kupfer, Journal of Nondestructive Evaluation 44 (2025).","apa":"Köhler, D., Dargel, A., Troschitz, J., Gude, M., &#38; Kupfer, R. (2025). In Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns of Radiopaque Materials. <i>Journal of Nondestructive Evaluation</i>, <i>44</i>(4), Article 131. <a href=\"https://doi.org/10.1007/s10921-025-01270-1\">https://doi.org/10.1007/s10921-025-01270-1</a>","ieee":"D. Köhler, A. Dargel, J. Troschitz, M. Gude, and R. Kupfer, “In Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns of Radiopaque Materials,” <i>Journal of Nondestructive Evaluation</i>, vol. 44, no. 4, Art. no. 131, 2025, doi: <a href=\"https://doi.org/10.1007/s10921-025-01270-1\">10.1007/s10921-025-01270-1</a>.","ama":"Köhler D, Dargel A, Troschitz J, Gude M, Kupfer R. In Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns of Radiopaque Materials. <i>Journal of Nondestructive Evaluation</i>. 2025;44(4). doi:<a href=\"https://doi.org/10.1007/s10921-025-01270-1\">10.1007/s10921-025-01270-1</a>","bibtex":"@article{Köhler_Dargel_Troschitz_Gude_Kupfer_2025, title={In Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns of Radiopaque Materials}, volume={44}, DOI={<a href=\"https://doi.org/10.1007/s10921-025-01270-1\">10.1007/s10921-025-01270-1</a>}, number={4131}, journal={Journal of Nondestructive Evaluation}, publisher={Springer Science and Business Media LLC}, author={Köhler, Daniel and Dargel, Alrik and Troschitz, Juliane and Gude, Maik and Kupfer, Robert}, year={2025} }","mla":"Köhler, Daniel, et al. “In Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns of Radiopaque Materials.” <i>Journal of Nondestructive Evaluation</i>, vol. 44, no. 4, 131, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s10921-025-01270-1\">10.1007/s10921-025-01270-1</a>."},"project":[{"_id":"133","name":"TRR 285 - Project Area C"},{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"},{"_id":"148","name":"TRR 285 - Subproject C04"}],"article_number":"131","language":[{"iso":"eng"}],"doi":"10.1007/s10921-025-01270-1","year":"2025","title":"In Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns of Radiopaque Materials","author":[{"full_name":"Köhler, Daniel","last_name":"Köhler","first_name":"Daniel","id":"83408"},{"first_name":"Alrik","last_name":"Dargel","full_name":"Dargel, Alrik","id":"114764"},{"last_name":"Troschitz","first_name":"Juliane","full_name":"Troschitz, Juliane"},{"first_name":"Maik","last_name":"Gude","full_name":"Gude, Maik"},{"first_name":"Robert","last_name":"Kupfer","full_name":"Kupfer, Robert"}],"publication_identifier":{"issn":["0195-9298","1573-4862"]},"date_updated":"2026-02-24T15:13:52Z","publication_status":"published","intvolume":"        44","article_type":"original","date_created":"2025-10-09T08:27:41Z","type":"journal_article","issue":"4","publication":"Journal of Nondestructive Evaluation","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n          <jats:p>A clinch point’s quality is usually assessed using ex situ destructive testing methods. These, however, are unable to detect phenomena immediately during the joining process. For instance, elastic deformations reverse and cracks close after unloading. In situ methods such as the force-displacement evaluation are used to investigate a clinching process, though deviations in the clinch point geometry cannot be derived with this method. To overcome these limitations, the clinching process can be investigated using in situ computed tomography (in situ CT). When investigating the clinching of aluminum parts in in situ CT, the sheet-sheet interface is hardly visible. Earlier investigations showed that radiopaque materials can be applied between the joining parts to enhance the detectability of the sheet-sheet interface. However, the layers cause strong artefacts, break during the clinching process or change the clinch joint’s properties significantly. In this paper, a minimally invasive method to enhance the interface detectability is presented. First, the aluminum oxide layer is removed by etching. Second, the specimen is electroplated with copper or gold, respectively. In some cases, a mask is applied to create a cross-shaped plating pattern. Then, the plated specimen is clinched with a non-plated counterpart and the interface detectability of the clinch points is assessed in CT scans. It is shown that a copper plating of 2.6–4 μm can visualize some parts of the interface, while 7–9 μm is suitable to enhance the detectability of the sheet-sheet interface almost continuously.</jats:p>"}]},{"type":"journal_article","date_created":"2025-09-10T07:52:43Z","project":[{"_id":"142","name":"TRR 285 - Subproject B03"},{"name":"TRR 285 - Project Area B","_id":"132"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n          <jats:p>The effects of corrosion on clinched joints are not completely understood yet. Recent research indicates that galvanic corrosion can actually enhance the fatigue life of clinched joints. It is then of significant interest to investigate the effects of another corrosion phenomenon, pitting corrosion, on the fatigue behavior of clinched joints. Pitting corrosion occurs in passive metals and can lead to stress concentrations. In the present study, the effects of pitting corrosion are investigated by using Lemaitre’s two-scale fatigue model with a 2D geometry of clinched joints. A slip condition is applied as a boundary condition to simplify the clinched joint model and reduce the computational cost of solving the contact mechanics problem. Additionally, a method to determine the damage strength and the damage exponent used in the two-scale damage model is introduced. Numerical simulations reveal that pitting corrosion reduces the fatigue life of clinched joints, particularly when it occurs on the internal surface in the neck area.</jats:p>"}],"citation":{"bibtex":"@article{Chen_Harzheim_Hofmann_Wallmersperger_2025, title={Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints}, DOI={<a href=\"https://doi.org/10.1007/s00707-025-04234-8\">10.1007/s00707-025-04234-8</a>}, journal={Acta Mechanica}, publisher={Springer Science and Business Media LLC}, author={Chen, Chin and Harzheim, Sven and Hofmann, Martin and Wallmersperger, Thomas}, year={2025} }","ama":"Chen C, Harzheim S, Hofmann M, Wallmersperger T. Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints. <i>Acta Mechanica</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1007/s00707-025-04234-8\">10.1007/s00707-025-04234-8</a>","mla":"Chen, Chin, et al. “Numerical Investigation of the Effects of Pitting Corrosion on High-Cycle Fatigue of Clinched Joints.” <i>Acta Mechanica</i>, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s00707-025-04234-8\">10.1007/s00707-025-04234-8</a>.","short":"C. Chen, S. Harzheim, M. Hofmann, T. Wallmersperger, Acta Mechanica (2025).","chicago":"Chen, Chin, Sven Harzheim, Martin Hofmann, and Thomas Wallmersperger. “Numerical Investigation of the Effects of Pitting Corrosion on High-Cycle Fatigue of Clinched Joints.” <i>Acta Mechanica</i>, 2025. <a href=\"https://doi.org/10.1007/s00707-025-04234-8\">https://doi.org/10.1007/s00707-025-04234-8</a>.","ieee":"C. Chen, S. Harzheim, M. Hofmann, and T. Wallmersperger, “Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints,” <i>Acta Mechanica</i>, 2025, doi: <a href=\"https://doi.org/10.1007/s00707-025-04234-8\">10.1007/s00707-025-04234-8</a>.","apa":"Chen, C., Harzheim, S., Hofmann, M., &#38; Wallmersperger, T. (2025). Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints. <i>Acta Mechanica</i>. <a href=\"https://doi.org/10.1007/s00707-025-04234-8\">https://doi.org/10.1007/s00707-025-04234-8</a>"},"publication":"Acta Mechanica","user_id":"114741","doi":"10.1007/s00707-025-04234-8","publisher":"Springer Science and Business Media LLC","_id":"61161","language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2026-02-24T15:11:39Z","author":[{"last_name":"Chen","first_name":"Chin","full_name":"Chen, Chin","id":"114741"},{"full_name":"Harzheim, Sven","last_name":"Harzheim","first_name":"Sven"},{"full_name":"Hofmann, Martin","first_name":"Martin","last_name":"Hofmann"},{"full_name":"Wallmersperger, Thomas","first_name":"Thomas","last_name":"Wallmersperger"}],"publication_identifier":{"issn":["0001-5970","1619-6937"]},"title":"Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints","status":"public","year":"2025"},{"project":[{"name":"TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285 - Subproject B03","_id":"142"},{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"}],"abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n          <jats:p>The effect of corrosion on mechanically joined components is not well understood. While recent research shows that a brief exposure of clinched specimens to a salt spray environment improves the specimens’ fatigue life, other research shows a decrease in load bearing capabilities with increasing corrosion times. These studies primarily focus on galvanic corrosion. It is not entirely clear how other corrosion phenomena, such as pitting corrosion, affect the fatigue life of clinched joints. In this work, a numerical model is used, which is able to simulate corrosion pit growth in EN AW-6014. The experimental polarization data of EN AW-6014 are used directly in the calculation of the interface kinetics parameter of the model.</jats:p>","lang":"eng"}],"citation":{"ama":"Harzheim S, Chen C, Hollmer K, Hofmann M, Zimmermann M, Wallmersperger T. Numerical investigation of pitting corrosion in clinched joints. <i>Acta Mechanica</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>","bibtex":"@article{Harzheim_Chen_Hollmer_Hofmann_Zimmermann_Wallmersperger_2025, title={Numerical investigation of pitting corrosion in clinched joints}, DOI={<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>}, journal={Acta Mechanica}, publisher={Springer Science and Business Media LLC}, author={Harzheim, Sven and Chen, Chin and Hollmer, Katharina and Hofmann, Martin and Zimmermann, Martina and Wallmersperger, Thomas}, year={2025} }","mla":"Harzheim, Sven, et al. “Numerical Investigation of Pitting Corrosion in Clinched Joints.” <i>Acta Mechanica</i>, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>.","short":"S. Harzheim, C. Chen, K. Hollmer, M. Hofmann, M. Zimmermann, T. Wallmersperger, Acta Mechanica (2025).","chicago":"Harzheim, Sven, Chin Chen, Katharina Hollmer, Martin Hofmann, Martina Zimmermann, and Thomas Wallmersperger. “Numerical Investigation of Pitting Corrosion in Clinched Joints.” <i>Acta Mechanica</i>, 2025. <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">https://doi.org/10.1007/s00707-025-04248-2</a>.","apa":"Harzheim, S., Chen, C., Hollmer, K., Hofmann, M., Zimmermann, M., &#38; Wallmersperger, T. (2025). Numerical investigation of pitting corrosion in clinched joints. <i>Acta Mechanica</i>. <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">https://doi.org/10.1007/s00707-025-04248-2</a>","ieee":"S. Harzheim, C. Chen, K. Hollmer, M. Hofmann, M. Zimmermann, and T. Wallmersperger, “Numerical investigation of pitting corrosion in clinched joints,” <i>Acta Mechanica</i>, 2025, doi: <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>."},"publication":"Acta Mechanica","type":"journal_article","date_created":"2025-09-23T11:58:18Z","date_updated":"2026-02-24T15:12:17Z","publication_status":"published","author":[{"first_name":"Sven","last_name":"Harzheim","full_name":"Harzheim, Sven"},{"id":"114741","last_name":"Chen","first_name":"Chin","full_name":"Chen, Chin"},{"last_name":"Hollmer","first_name":"Katharina","full_name":"Hollmer, Katharina"},{"last_name":"Hofmann","first_name":"Martin","full_name":"Hofmann, Martin"},{"first_name":"Martina","last_name":"Zimmermann","full_name":"Zimmermann, Martina"},{"last_name":"Wallmersperger","first_name":"Thomas","full_name":"Wallmersperger, Thomas"}],"publication_identifier":{"issn":["0001-5970","1619-6937"]},"year":"2025","status":"public","title":"Numerical investigation of pitting corrosion in clinched joints","doi":"10.1007/s00707-025-04248-2","user_id":"114741","publisher":"Springer Science and Business Media LLC","_id":"61411","language":[{"iso":"eng"}]},{"abstract":[{"text":" This study investigates the effect of dispersion gas (DG) flow on the formation and properties of maghemite (γ-Fe2O3) nanoparticles using standardized SpraySyn burners (SS1 and SS2). Several diagnostics were employed to characterize the spray and nanoparticles. \r\nIncreasing DG flow (6 - 12 slm) results in smaller droplet sizes (DS), cooler flame temperatures, shorter high-temperature droplet/particle residence times, and smaller agglomerates in the size range of 5 - 12 nm with narrower primary particle size distribution, corresponding to higher mass fractal dimensions, as supported by TEM and SMPS analysis, resulting in more compact agglomerates. BET and TEM confirmed decreasing primary particle sizes with increasing DG flow. Raman and XRD analyses predominantly identified maghemite, which shows a bimodal distribution of crystallite sizes, while SS1 samples have a greater proportion of larger crystallites.\r\nThe self-preserving size distributions of agglomerates with a geometric standard deviation of 1.5 are reached faster with increasing DG flow. The barrier effect of DG observed in SS1 leads to slower droplet combustion kinetics, higher temperatures, and delayed precursor release, which, along with downstream flow recirculation, result in significantly higher agglomeration rates outside the visible flame. SS2 demonstrates improved atomization, more stable flames, and finer, uniform nanoparticles with less carbonaceous residues (CR). Conversely, SS1 showed broader DS distributions and higher CR levels on the γ-Fe2O3 surface, especially at higher DG flow.\r\nThis work highlights the essential role of DG flow and nozzle geometry in controlling droplet evaporation, flame stability, and nanoparticle growth, offering insights for optimizing SFS and validating numerical models.\r\n","lang":"eng"}],"publication":"Powder Technology","type":"journal_article","keyword":["Spray flame synthesis","iron oxide nanoparticle","SpraySyn burner","Dispersion gas","Coaxial atomization","HiaT-SMPS"],"date_created":"2026-02-02T11:41:04Z","intvolume":"       470","article_type":"original","date_updated":"2026-02-25T07:45:44Z","publication_status":"published","publication_identifier":{"issn":["0032-5910"]},"author":[{"full_name":"Massopo, Orlando","first_name":"Orlando","last_name":"Massopo"},{"first_name":"Ricardo","last_name":"Tischendorf","full_name":"Tischendorf, Ricardo"},{"full_name":"Gonchikzhapov, Munko","last_name":"Gonchikzhapov","first_name":"Munko"},{"full_name":"Kasper, Tina","first_name":"Tina","last_name":"Kasper"},{"full_name":"Augustin, Peter","first_name":"Peter","last_name":"Augustin"},{"full_name":"Özer, Burak","last_name":"Özer","first_name":"Burak"},{"full_name":"Reddemann, Manuel","last_name":"Reddemann","first_name":"Manuel"},{"full_name":"Kneer, Reinhold","first_name":"Reinhold","last_name":"Kneer"},{"full_name":"Sheikh, Mohammed-Ali","first_name":"Mohammed-Ali","last_name":"Sheikh"},{"first_name":"Aydan Akyildiz","last_name":"Mert","full_name":"Mert, Aydan Akyildiz"},{"full_name":"Wiggers, Hartmut","last_name":"Wiggers","first_name":"Hartmut"},{"full_name":"Schmid, Hans-Joachim","last_name":"Schmid","first_name":"Hans-Joachim"}],"title":"Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners","year":"2025","doi":"10.1016/j.powtec.2025.121992","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1"}],"article_number":"121992","citation":{"mla":"Massopo, Orlando, et al. “Influence of Dispersion Gas Flow on the Spray Characteristics and γ-Fe2O3 Nanoparticles Formation and Properties in Reference SpraySyn Burners.” <i>Powder Technology</i>, vol. 470, 121992, Elsevier BV, 2025, doi:<a href=\"https://doi.org/10.1016/j.powtec.2025.121992\">10.1016/j.powtec.2025.121992</a>.","ama":"Massopo O, Tischendorf R, Gonchikzhapov M, et al. Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners. <i>Powder Technology</i>. 2025;470. doi:<a href=\"https://doi.org/10.1016/j.powtec.2025.121992\">10.1016/j.powtec.2025.121992</a>","bibtex":"@article{Massopo_Tischendorf_Gonchikzhapov_Kasper_Augustin_Özer_Reddemann_Kneer_Sheikh_Mert_et al._2025, title={Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners}, volume={470}, DOI={<a href=\"https://doi.org/10.1016/j.powtec.2025.121992\">10.1016/j.powtec.2025.121992</a>}, number={121992}, journal={Powder Technology}, publisher={Elsevier BV}, author={Massopo, Orlando and Tischendorf, Ricardo and Gonchikzhapov, Munko and Kasper, Tina and Augustin, Peter and Özer, Burak and Reddemann, Manuel and Kneer, Reinhold and Sheikh, Mohammed-Ali and Mert, Aydan Akyildiz and et al.}, year={2025} }","apa":"Massopo, O., Tischendorf, R., Gonchikzhapov, M., Kasper, T., Augustin, P., Özer, B., Reddemann, M., Kneer, R., Sheikh, M.-A., Mert, A. A., Wiggers, H., &#38; Schmid, H.-J. (2025). Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners. <i>Powder Technology</i>, <i>470</i>, Article 121992. <a href=\"https://doi.org/10.1016/j.powtec.2025.121992\">https://doi.org/10.1016/j.powtec.2025.121992</a>","ieee":"O. Massopo <i>et al.</i>, “Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners,” <i>Powder Technology</i>, vol. 470, Art. no. 121992, 2025, doi: <a href=\"https://doi.org/10.1016/j.powtec.2025.121992\">10.1016/j.powtec.2025.121992</a>.","chicago":"Massopo, Orlando, Ricardo Tischendorf, Munko Gonchikzhapov, Tina Kasper, Peter Augustin, Burak Özer, Manuel Reddemann, et al. “Influence of Dispersion Gas Flow on the Spray Characteristics and γ-Fe2O3 Nanoparticles Formation and Properties in Reference SpraySyn Burners.” <i>Powder Technology</i> 470 (2025). <a href=\"https://doi.org/10.1016/j.powtec.2025.121992\">https://doi.org/10.1016/j.powtec.2025.121992</a>.","short":"O. Massopo, R. Tischendorf, M. Gonchikzhapov, T. Kasper, P. Augustin, B. Özer, M. Reddemann, R. Kneer, M.-A. Sheikh, A.A. Mert, H. Wiggers, H.-J. Schmid, Powder Technology 470 (2025)."},"oa":"1","status":"public","volume":470,"user_id":"98419","_id":"63830","publisher":"Elsevier BV"},{"publication":"Practical Holography XXXIX: Displays, Materials, and Applications","citation":{"ieee":"N. C. Gerhardt, M. R. Hofmann, L. Zens, J. Möller, and V. Besaga, “Quantitative holography for the characterisation of semiconductor amplifieres and lasers,” 2025, doi: <a href=\"https://doi.org/10.1117/12.3041318\">10.1117/12.3041318</a>.","apa":"Gerhardt, N. C., Hofmann, M. R., Zens, L., Möller, J., &#38; Besaga, V. (2025). Quantitative holography for the characterisation of semiconductor amplifieres and lasers. <i>Practical Holography XXXIX: Displays, Materials, and Applications</i>. <a href=\"https://doi.org/10.1117/12.3041318\">https://doi.org/10.1117/12.3041318</a>","chicago":"Gerhardt, Nils Christopher, Martin R. Hofmann, Leon Zens, Jens Möller, and Vira Besaga. “Quantitative Holography for the Characterisation of Semiconductor Amplifieres and Lasers.” In <i>Practical Holography XXXIX: Displays, Materials, and Applications</i>, 2025. <a href=\"https://doi.org/10.1117/12.3041318\">https://doi.org/10.1117/12.3041318</a>.","short":"N.C. Gerhardt, M.R. Hofmann, L. Zens, J. Möller, V. Besaga, in: Practical Holography XXXIX: Displays, Materials, and Applications, 2025.","mla":"Gerhardt, Nils Christopher, et al. “Quantitative Holography for the Characterisation of Semiconductor Amplifieres and Lasers.” <i>Practical Holography XXXIX: Displays, Materials, and Applications</i>, 2025, doi:<a href=\"https://doi.org/10.1117/12.3041318\">10.1117/12.3041318</a>.","bibtex":"@inproceedings{Gerhardt_Hofmann_Zens_Möller_Besaga_2025, title={Quantitative holography for the characterisation of semiconductor amplifieres and lasers}, DOI={<a href=\"https://doi.org/10.1117/12.3041318\">10.1117/12.3041318</a>}, booktitle={Practical Holography XXXIX: Displays, Materials, and Applications}, author={Gerhardt, Nils Christopher and Hofmann, Martin R. and Zens, Leon and Möller, Jens and Besaga, Vira}, year={2025} }","ama":"Gerhardt NC, Hofmann MR, Zens L, Möller J, Besaga V. Quantitative holography for the characterisation of semiconductor amplifieres and lasers. In: <i>Practical Holography XXXIX: Displays, Materials, and Applications</i>. ; 2025. doi:<a href=\"https://doi.org/10.1117/12.3041318\">10.1117/12.3041318</a>"},"date_created":"2026-02-20T10:03:50Z","type":"conference","department":[{"_id":"977"}],"title":"Quantitative holography for the characterisation of semiconductor amplifieres and lasers","year":"2025","status":"public","author":[{"id":"115298","orcid":"0009-0002-5538-231X","first_name":"Nils Christopher","last_name":"Gerhardt","full_name":"Gerhardt, Nils Christopher"},{"full_name":"Hofmann, Martin R.","first_name":"Martin R.","last_name":"Hofmann"},{"first_name":"Leon","last_name":"Zens","full_name":"Zens, Leon"},{"last_name":"Möller","first_name":"Jens","full_name":"Möller, Jens"},{"first_name":"Vira","last_name":"Besaga","full_name":"Besaga, Vira"}],"date_updated":"2026-02-25T09:34:37Z","language":[{"iso":"eng"}],"_id":"64293","user_id":"15911","doi":"10.1117/12.3041318"},{"doi":"10.1007/s10623-024-01471-1","user_id":"70420","volume":93,"page":"971 - 981","language":[{"iso":"eng"}],"_id":"50299","date_updated":"2026-02-25T13:51:50Z","publication_status":"published","intvolume":"        93","title":"Nontrivial $t$-designs in polar spaces exist for all $t$","status":"public","year":"2025","author":[{"full_name":"Weiß, Charlene","last_name":"Weiß","first_name":"Charlene","id":"70420"}],"type":"journal_article","department":[{"_id":"100"}],"date_created":"2024-01-08T14:39:54Z","abstract":[{"text":"A finite classical polar space of rank $n$ consists of the totally isotropic\r\nsubspaces of a finite vector space over $\\mathbb{F}_q$ equipped with a\r\nnondegenerate form such that $n$ is the maximal dimension of such a subspace. A\r\n$t$-$(n,k,\\lambda)$ design in a finite classical polar space of rank $n$ is a\r\ncollection $Y$ of totally isotropic $k$-spaces such that each totally isotropic\r\n$t$-space is contained in exactly $\\lambda$ members of $Y$. Nontrivial examples\r\nare currently only known for $t\\leq 2$. We show that $t$-$(n,k,\\lambda)$\r\ndesigns in polar spaces exist for all $t$ and $q$ provided that\r\n$k>\\frac{21}{2}t$ and $n$ is sufficiently large enough. The proof is based on a\r\nprobabilistic method by Kuperberg, Lovett, and Peled, and it is thus\r\nnonconstructive.","lang":"eng"}],"publication":"Des. Codes Cryptogr.","citation":{"mla":"Weiß, Charlene. “Nontrivial $t$-Designs in Polar Spaces Exist for All $t$.” <i>Des. Codes Cryptogr.</i>, vol. 93, 2025, pp. 971–81, doi:<a href=\"https://doi.org/10.1007/s10623-024-01471-1\">10.1007/s10623-024-01471-1</a>.","bibtex":"@article{Weiß_2025, title={Nontrivial $t$-designs in polar spaces exist for all $t$}, volume={93}, DOI={<a href=\"https://doi.org/10.1007/s10623-024-01471-1\">10.1007/s10623-024-01471-1</a>}, journal={Des. Codes Cryptogr.}, author={Weiß, Charlene}, year={2025}, pages={971–981} }","ama":"Weiß C. Nontrivial $t$-designs in polar spaces exist for all $t$. <i>Des Codes Cryptogr</i>. 2025;93:971-981. doi:<a href=\"https://doi.org/10.1007/s10623-024-01471-1\">10.1007/s10623-024-01471-1</a>","ieee":"C. Weiß, “Nontrivial $t$-designs in polar spaces exist for all $t$,” <i>Des. Codes Cryptogr.</i>, vol. 93, pp. 971–981, 2025, doi: <a href=\"https://doi.org/10.1007/s10623-024-01471-1\">10.1007/s10623-024-01471-1</a>.","apa":"Weiß, C. (2025). Nontrivial $t$-designs in polar spaces exist for all $t$. <i>Des. Codes Cryptogr.</i>, <i>93</i>, 971–981. <a href=\"https://doi.org/10.1007/s10623-024-01471-1\">https://doi.org/10.1007/s10623-024-01471-1</a>","chicago":"Weiß, Charlene. “Nontrivial $t$-Designs in Polar Spaces Exist for All $t$.” <i>Des. Codes Cryptogr.</i> 93 (2025): 971–81. <a href=\"https://doi.org/10.1007/s10623-024-01471-1\">https://doi.org/10.1007/s10623-024-01471-1</a>.","short":"C. Weiß, Des. Codes Cryptogr. 93 (2025) 971–981."}},{"citation":{"chicago":"Lindemann, M., M. D’Alessandro, N. Ledentsov, O. Y. Makarov, N. N. Ledentsov, A. Tibaldi, N. C. Gerhardt, and M. R. Hofmann. “Laterally Coupled Vertical-Cavity Surface-Emitting Lasers with Tunable Resonance Width and Frequency.” <i>Journal of Applied Physics</i> 138, no. 5 (2025). <a href=\"https://doi.org/10.1063/5.0275622\">https://doi.org/10.1063/5.0275622</a>.","short":"M. Lindemann, M. D’Alessandro, N. Ledentsov, O.Y. Makarov, N.N. Ledentsov, A. Tibaldi, N.C. Gerhardt, M.R. Hofmann, Journal of Applied Physics 138 (2025).","ieee":"M. Lindemann <i>et al.</i>, “Laterally coupled vertical-cavity surface-emitting lasers with tunable resonance width and frequency,” <i>Journal of Applied Physics</i>, vol. 138, no. 5, 2025, doi: <a href=\"https://doi.org/10.1063/5.0275622\">10.1063/5.0275622</a>.","apa":"Lindemann, M., D’Alessandro, M., Ledentsov, N., Makarov, O. Y., Ledentsov, N. N., Tibaldi, A., Gerhardt, N. C., &#38; Hofmann, M. R. (2025). Laterally coupled vertical-cavity surface-emitting lasers with tunable resonance width and frequency. <i>Journal of Applied Physics</i>, <i>138</i>(5). <a href=\"https://doi.org/10.1063/5.0275622\">https://doi.org/10.1063/5.0275622</a>","bibtex":"@article{Lindemann_D’Alessandro_Ledentsov_Makarov_Ledentsov_Tibaldi_Gerhardt_Hofmann_2025, title={Laterally coupled vertical-cavity surface-emitting lasers with tunable resonance width and frequency}, volume={138}, DOI={<a href=\"https://doi.org/10.1063/5.0275622\">10.1063/5.0275622</a>}, number={5}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Lindemann, M. and D’Alessandro, M. and Ledentsov, N. and Makarov, O. Y. and Ledentsov, N. N. and Tibaldi, A. and Gerhardt, N. C. and Hofmann, M. R.}, year={2025} }","ama":"Lindemann M, D’Alessandro M, Ledentsov N, et al. Laterally coupled vertical-cavity surface-emitting lasers with tunable resonance width and frequency. <i>Journal of Applied Physics</i>. 2025;138(5). doi:<a href=\"https://doi.org/10.1063/5.0275622\">10.1063/5.0275622</a>","mla":"Lindemann, M., et al. “Laterally Coupled Vertical-Cavity Surface-Emitting Lasers with Tunable Resonance Width and Frequency.” <i>Journal of Applied Physics</i>, vol. 138, no. 5, AIP Publishing, 2025, doi:<a href=\"https://doi.org/10.1063/5.0275622\">10.1063/5.0275622</a>."},"issue":"5","publication":"Journal of Applied Physics","date_created":"2026-02-20T10:03:50Z","department":[{"_id":"977"}],"type":"journal_article","author":[{"first_name":"M.","last_name":"Lindemann","full_name":"Lindemann, M."},{"full_name":"D’Alessandro, M.","first_name":"M.","last_name":"D’Alessandro"},{"full_name":"Ledentsov, N.","last_name":"Ledentsov","first_name":"N."},{"full_name":"Makarov, O. Y.","last_name":"Makarov","first_name":"O. Y."},{"full_name":"Ledentsov, N. N.","first_name":"N. N.","last_name":"Ledentsov"},{"first_name":"A.","last_name":"Tibaldi","full_name":"Tibaldi, A."},{"full_name":"Gerhardt, N. C.","last_name":"Gerhardt","first_name":"N. C."},{"first_name":"M. R.","last_name":"Hofmann","full_name":"Hofmann, M. R."}],"publication_identifier":{"issn":["1089-7550"]},"year":"2025","status":"public","title":"Laterally coupled vertical-cavity surface-emitting lasers with tunable resonance width and frequency","intvolume":"       138","date_updated":"2026-02-25T13:59:32Z","publisher":"AIP Publishing","_id":"64292","volume":138,"user_id":"15911","doi":"10.1063/5.0275622"},{"department":[{"_id":"819"}],"type":"conference","date_created":"2025-10-22T07:26:45Z","citation":{"mla":"Rook, Jeroen, et al. “Efficient Online Automated Algorithm Selection in the Face of Data-Drift in Optimisation Problem Instances.” <i>Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025</i>, ACM, 2025, pp. 262–272, doi:<a href=\"https://doi.org/10.1145/3729878.3746615\">10.1145/3729878.3746615</a>.","bibtex":"@inproceedings{Rook_Renau_Trautmann_Hart_2025, title={Efficient Online Automated Algorithm Selection in the Face of Data-Drift in Optimisation Problem Instances}, DOI={<a href=\"https://doi.org/10.1145/3729878.3746615\">10.1145/3729878.3746615</a>}, booktitle={Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025}, publisher={ACM}, author={Rook, Jeroen and Renau, Quentin and Trautmann, Heike and Hart, Emma}, year={2025}, pages={262–272} }","ama":"Rook J, Renau Q, Trautmann H, Hart E. 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Efficient Online Automated Algorithm Selection in the Face of Data-Drift in Optimisation Problem Instances. <i>Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025</i>, 262–272. <a href=\"https://doi.org/10.1145/3729878.3746615\">https://doi.org/10.1145/3729878.3746615</a>","short":"J. Rook, Q. Renau, H. Trautmann, E. Hart, in: Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025, ACM, 2025, pp. 262–272.","chicago":"Rook, Jeroen, Quentin Renau, Heike Trautmann, and Emma Hart. “Efficient Online Automated Algorithm Selection in the Face of Data-Drift in Optimisation Problem Instances.” In <i>Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025</i>, 262–272. ACM, 2025. <a href=\"https://doi.org/10.1145/3729878.3746615\">https://doi.org/10.1145/3729878.3746615</a>."},"publication":"Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025","user_id":"15504","doi":"10.1145/3729878.3746615","_id":"61918","language":[{"iso":"eng"}],"publisher":"ACM","page":"262–272","date_updated":"2026-02-25T14:31:18Z","author":[{"first_name":"Jeroen","last_name":"Rook","full_name":"Rook, Jeroen","id":"102977"},{"last_name":"Renau","first_name":"Quentin","full_name":"Renau, Quentin"},{"full_name":"Trautmann, Heike","first_name":"Heike","last_name":"Trautmann","orcid":"0000-0002-9788-8282","id":"100740"},{"first_name":"Emma","last_name":"Hart","full_name":"Hart, Emma"}],"year":"2025","title":"Efficient Online Automated Algorithm Selection in the Face of Data-Drift in Optimisation Problem Instances","status":"public"},{"type":"conference_abstract","department":[{"_id":"9"},{"_id":"150"}],"date_created":"2026-02-26T09:00:10Z","citation":{"mla":"Neukötter, Moritz, et al. <i>Die Möglichkeiten Der Filament Extension Atomization </i>. 2025.","ama":"Neukötter M, Jesinghausen S, Schmid H-J. Die Möglichkeiten der Filament Extension Atomization . In: ; 2025.","bibtex":"@inproceedings{Neukötter_Jesinghausen_Schmid_2025, title={Die Möglichkeiten der Filament Extension Atomization }, author={Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}, year={2025} }","apa":"Neukötter, M., Jesinghausen, S., &#38; Schmid, H.-J. (2025). <i>Die Möglichkeiten der Filament Extension Atomization </i>. Jahrestreffen DECHEMA/VDI-Fachgruppe Mehrphasenströmung, Hamburg.","ieee":"M. Neukötter, S. Jesinghausen, and H.-J. Schmid, “Die Möglichkeiten der Filament Extension Atomization ,” presented at the Jahrestreffen DECHEMA/VDI-Fachgruppe Mehrphasenströmung, Hamburg, 2025.","chicago":"Neukötter, Moritz, Steffen Jesinghausen, and Hans-Joachim Schmid. “Die Möglichkeiten Der Filament Extension Atomization ,” 2025.","short":"M. Neukötter, S. Jesinghausen, H.-J. Schmid, in: 2025."},"user_id":"45530","_id":"64658","language":[{"iso":"eng"}],"date_updated":"2026-02-26T09:05:06Z","status":"public","year":"2025","title":"Die Möglichkeiten der Filament Extension Atomization ","conference":{"location":"Hamburg","start_date":"2025-03-19","name":"Jahrestreffen DECHEMA/VDI-Fachgruppe Mehrphasenströmung","end_date":"2025-03-21"},"author":[{"orcid":"0000-0001-9101-8828","last_name":"Neukötter","first_name":"Moritz","full_name":"Neukötter, Moritz","id":"45530"},{"full_name":"Jesinghausen, Steffen","last_name":"Jesinghausen","orcid":"https://orcid.org/0000-0003-2611-5298","first_name":"Steffen","id":"3959"},{"id":"464","full_name":"Schmid, Hans-Joachim","orcid":"000-0001-8590-1921","first_name":"Hans-Joachim","last_name":"Schmid"}]},{"date_created":"2026-02-26T09:03:07Z","department":[{"_id":"9"},{"_id":"150"}],"type":"conference_abstract","citation":{"bibtex":"@inproceedings{Neukötter_Jesinghausen_Schmid_2025, title={Flow around Particles in Uniaxially Elongated Capillary Bridges}, author={Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}, year={2025} }","ama":"Neukötter M, Jesinghausen S, Schmid H-J. Flow around Particles in Uniaxially Elongated Capillary Bridges. In: ; 2025.","mla":"Neukötter, Moritz, et al. <i>Flow around Particles in Uniaxially Elongated Capillary Bridges</i>. 2025.","chicago":"Neukötter, Moritz, Steffen Jesinghausen, and Hans-Joachim Schmid. “Flow around Particles in Uniaxially Elongated Capillary Bridges,” 2025.","short":"M. Neukötter, S. Jesinghausen, H.-J. Schmid, in: 2025.","ieee":"M. Neukötter, S. Jesinghausen, and H.-J. Schmid, “Flow around Particles in Uniaxially Elongated Capillary Bridges,” presented at the DRG Symposium &#38; Nordic Rheology Conference, Berlin, 2025.","apa":"Neukötter, M., Jesinghausen, S., &#38; Schmid, H.-J. (2025). <i>Flow around Particles in Uniaxially Elongated Capillary Bridges</i>. DRG Symposium &#38; Nordic Rheology Conference, Berlin."},"_id":"64659","language":[{"iso":"eng"}],"user_id":"45530","author":[{"full_name":"Neukötter, Moritz","last_name":"Neukötter","first_name":"Moritz","orcid":"0000-0001-9101-8828","id":"45530"},{"full_name":"Jesinghausen, Steffen","first_name":"Steffen","orcid":"https://orcid.org/0000-0003-2611-5298","last_name":"Jesinghausen","id":"3959"},{"id":"464","orcid":"000-0001-8590-1921","last_name":"Schmid","first_name":"Hans-Joachim","full_name":"Schmid, Hans-Joachim"}],"conference":{"location":"Berlin","name":"DRG Symposium & Nordic Rheology Conference","start_date":"2025-06-10","end_date":"2025-06-12"},"year":"2025","status":"public","title":"Flow around Particles in Uniaxially Elongated Capillary Bridges","date_updated":"2026-02-26T09:05:00Z"},{"date_created":"2026-02-26T08:48:05Z","department":[{"_id":"9"},{"_id":"150"}],"type":"bachelorsthesis","supervisor":[{"id":"45530","full_name":"Neukötter, Moritz","last_name":"Neukötter","first_name":"Moritz","orcid":"0000-0001-9101-8828"},{"id":"3959","full_name":"Jesinghausen, Steffen","first_name":"Steffen","orcid":"https://orcid.org/0000-0003-2611-5298","last_name":"Jesinghausen"},{"full_name":"Schmid, Hans-Joachim","orcid":"000-0001-8590-1921","first_name":"Hans-Joachim","last_name":"Schmid","id":"464"}],"citation":{"ieee":"J. Neudorf and M. Neukötter, <i>Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer</i>. 2025.","apa":"Neudorf, J., &#38; Neukötter, M. (2025). <i>Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer</i>.","chicago":"Neudorf, Julian , and Moritz Neukötter. <i>Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer</i>, 2025.","short":"J. Neudorf, M. Neukötter, Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer, 2025.","mla":"Neudorf, Julian, and Moritz Neukötter. <i>Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer</i>. 2025.","bibtex":"@book{Neudorf_Neukötter_2025, title={Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer}, author={Neudorf, Julian  and Neukötter, Moritz}, year={2025} }","ama":"Neudorf J, Neukötter M. <i>Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer</i>.; 2025."},"_id":"64657","language":[{"iso":"ger"}],"user_id":"45530","author":[{"full_name":"Neudorf, Julian ","first_name":"Julian ","last_name":"Neudorf"},{"full_name":"Neukötter, Moritz","orcid":"0000-0001-9101-8828","last_name":"Neukötter","first_name":"Moritz","id":"45530"}],"title":"Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer","year":"2025","status":"public","date_updated":"2026-02-26T08:48:33Z"},{"year":"2025","title":"Boosting third-order nonlinearities in rutile TiO<sub>2</sub> by chromium doping","author":[{"first_name":"Marius","last_name":"Brinkmann","full_name":"Brinkmann, Marius"},{"full_name":"Meier, Falco","last_name":"Meier","first_name":"Falco"},{"full_name":"Spedt, Vladimir","last_name":"Spedt","first_name":"Vladimir"},{"id":"20798","full_name":"Meier, Cedrik","orcid":"https://orcid.org/0000-0002-3787-3572","first_name":"Cedrik","last_name":"Meier"}],"publication_identifier":{"issn":["1094-4087"]},"date_updated":"2026-02-26T09:44:49Z","publication_status":"published","intvolume":"        33","article_number":"54320","language":[{"iso":"eng"}],"doi":"10.1364/oe.572063","issue":"26","publication":"Optics Express","abstract":[{"text":"<jats:p>\r\n                    In this study, we investigate the impact of chromium-induced point defects on the nonlinear optical properties and electric-field-induced second harmonic generation (EFISH) in rutile titanium dioxide (TiO\r\n                    <jats:sub>2</jats:sub>\r\n                    ). Chromium thin films were deposited by electron beam evaporation on (001)-oriented bulk TiO\r\n                    <jats:sub>2</jats:sub>\r\n                    substrates and subsequently diffused into the lattice in a tube furnace under a nitrogen atmosphere at 900 °C. The introduction of chromium significantly enhanced the third harmonic generation (THG) of a 1560 nm laser, with an amplification factor of up to 8.3, indicative of an enhanced third-order nonlinear susceptibility,\r\n                    <jats:italic>χ</jats:italic>\r\n                    <jats:sup>(3)</jats:sup>\r\n                    . Moreover, the application of an external voltage induced a pronounced EFISH signal in the chromium-doped samples, further confirming the enhanced nonlinear response. These results demonstrate that defect engineering via chromium doping in rutile TiO\r\n                    <jats:sub>2</jats:sub>\r\n                    offers a promising pathway for the development of high-performance nonlinear optical devices.\r\n                  </jats:p>","lang":"eng"}],"date_created":"2026-02-26T09:43:53Z","type":"journal_article","department":[{"_id":"15"}],"status":"public","_id":"64662","publisher":"Optica Publishing Group","user_id":"20798","volume":33,"citation":{"chicago":"Brinkmann, Marius, Falco Meier, Vladimir Spedt, and Cedrik Meier. “Boosting Third-Order Nonlinearities in Rutile TiO<sub>2</sub> by Chromium Doping.” <i>Optics Express</i> 33, no. 26 (2025). <a href=\"https://doi.org/10.1364/oe.572063\">https://doi.org/10.1364/oe.572063</a>.","short":"M. Brinkmann, F. Meier, V. Spedt, C. Meier, Optics Express 33 (2025).","ieee":"M. Brinkmann, F. Meier, V. Spedt, and C. Meier, “Boosting third-order nonlinearities in rutile TiO<sub>2</sub> by chromium doping,” <i>Optics Express</i>, vol. 33, no. 26, Art. no. 54320, 2025, doi: <a href=\"https://doi.org/10.1364/oe.572063\">10.1364/oe.572063</a>.","apa":"Brinkmann, M., Meier, F., Spedt, V., &#38; Meier, C. (2025). Boosting third-order nonlinearities in rutile TiO<sub>2</sub> by chromium doping. <i>Optics Express</i>, <i>33</i>(26), Article 54320. <a href=\"https://doi.org/10.1364/oe.572063\">https://doi.org/10.1364/oe.572063</a>","bibtex":"@article{Brinkmann_Meier_Spedt_Meier_2025, title={Boosting third-order nonlinearities in rutile TiO<sub>2</sub> by chromium doping}, volume={33}, DOI={<a href=\"https://doi.org/10.1364/oe.572063\">10.1364/oe.572063</a>}, number={2654320}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Brinkmann, Marius and Meier, Falco and Spedt, Vladimir and Meier, Cedrik}, year={2025} }","ama":"Brinkmann M, Meier F, Spedt V, Meier C. Boosting third-order nonlinearities in rutile TiO<sub>2</sub> by chromium doping. <i>Optics Express</i>. 2025;33(26). doi:<a href=\"https://doi.org/10.1364/oe.572063\">10.1364/oe.572063</a>","mla":"Brinkmann, Marius, et al. “Boosting Third-Order Nonlinearities in Rutile TiO<sub>2</sub> by Chromium Doping.” <i>Optics Express</i>, vol. 33, no. 26, 54320, Optica Publishing Group, 2025, doi:<a href=\"https://doi.org/10.1364/oe.572063\">10.1364/oe.572063</a>."}},{"_id":"64720","publisher":"ACM","doi":"10.1145/3689187.3709612","user_id":"63216","author":[{"full_name":"Schulte, Carsten","last_name":"Schulte","first_name":"Carsten"},{"first_name":"Sue","last_name":"Sentance","full_name":"Sentance, Sue"},{"last_name":"Sparmann","first_name":"Sören","full_name":"Sparmann, Sören"},{"last_name":"Altin","first_name":"Rukiye","full_name":"Altin, Rukiye"},{"full_name":"Friebroon-Yesharim, Mor","last_name":"Friebroon-Yesharim","first_name":"Mor"},{"full_name":"Landman, Martina","first_name":"Martina","last_name":"Landman"},{"last_name":"Rücker","first_name":"Michael T.","full_name":"Rücker, Michael T."},{"last_name":"Satavlekar","first_name":"Spruha","full_name":"Satavlekar, Spruha"},{"first_name":"Angela","last_name":"Siegel","full_name":"Siegel, Angela"},{"last_name":"Tedre","first_name":"Matti","full_name":"Tedre, Matti"},{"last_name":"Tubino","first_name":"Laura","full_name":"Tubino, Laura"},{"full_name":"Vartiainen, Henriikka","first_name":"Henriikka","last_name":"Vartiainen"},{"full_name":"VelÁzquez-Iturbide, J. Ángel","first_name":"J. Ángel","last_name":"VelÁzquez-Iturbide"},{"full_name":"Waite, Jane","last_name":"Waite","first_name":"Jane"},{"full_name":"Wu, Zihan","last_name":"Wu","first_name":"Zihan"}],"year":"2025","title":"What We Talk About When We Talk About K-12 Computing Education","status":"public","date_updated":"2026-02-26T13:02:43Z","publication_status":"published","date_created":"2026-02-26T13:00:09Z","type":"conference","citation":{"mla":"Schulte, Carsten, et al. “What We Talk About When We Talk About K-12 Computing Education.” <i>2024 Working Group Reports on Innovation and Technology in Computer Science Education</i>, ACM, 2025, doi:<a href=\"https://doi.org/10.1145/3689187.3709612\">10.1145/3689187.3709612</a>.","bibtex":"@inproceedings{Schulte_Sentance_Sparmann_Altin_Friebroon-Yesharim_Landman_Rücker_Satavlekar_Siegel_Tedre_et al._2025, title={What We Talk About When We Talk About K-12 Computing Education}, DOI={<a href=\"https://doi.org/10.1145/3689187.3709612\">10.1145/3689187.3709612</a>}, booktitle={2024 Working Group Reports on Innovation and Technology in Computer Science Education}, publisher={ACM}, author={Schulte, Carsten and Sentance, Sue and Sparmann, Sören and Altin, Rukiye and Friebroon-Yesharim, Mor and Landman, Martina and Rücker, Michael T. and Satavlekar, Spruha and Siegel, Angela and Tedre, Matti and et al.}, year={2025} }","ama":"Schulte C, Sentance S, Sparmann S, et al. What We Talk About When We Talk About K-12 Computing Education. In: <i>2024 Working Group Reports on Innovation and Technology in Computer Science Education</i>. ACM; 2025. doi:<a href=\"https://doi.org/10.1145/3689187.3709612\">10.1145/3689187.3709612</a>","ieee":"C. Schulte <i>et al.</i>, “What We Talk About When We Talk About K-12 Computing Education,” 2025, doi: <a href=\"https://doi.org/10.1145/3689187.3709612\">10.1145/3689187.3709612</a>.","apa":"Schulte, C., Sentance, S., Sparmann, S., Altin, R., Friebroon-Yesharim, M., Landman, M., Rücker, M. T., Satavlekar, S., Siegel, A., Tedre, M., Tubino, L., Vartiainen, H., VelÁzquez-Iturbide, J. Á., Waite, J., &#38; Wu, Z. (2025). What We Talk About When We Talk About K-12 Computing Education. <i>2024 Working Group Reports on Innovation and Technology in Computer Science Education</i>. <a href=\"https://doi.org/10.1145/3689187.3709612\">https://doi.org/10.1145/3689187.3709612</a>","short":"C. Schulte, S. Sentance, S. Sparmann, R. Altin, M. Friebroon-Yesharim, M. Landman, M.T. Rücker, S. Satavlekar, A. Siegel, M. Tedre, L. Tubino, H. Vartiainen, J.Á. VelÁzquez-Iturbide, J. Waite, Z. Wu, in: 2024 Working Group Reports on Innovation and Technology in Computer Science Education, ACM, 2025.","chicago":"Schulte, Carsten, Sue Sentance, Sören Sparmann, Rukiye Altin, Mor Friebroon-Yesharim, Martina Landman, Michael T. Rücker, et al. “What We Talk About When We Talk About K-12 Computing Education.” In <i>2024 Working Group Reports on Innovation and Technology in Computer Science Education</i>. ACM, 2025. <a href=\"https://doi.org/10.1145/3689187.3709612\">https://doi.org/10.1145/3689187.3709612</a>."},"publication":"2024 Working Group Reports on Innovation and Technology in Computer Science Education"},{"author":[{"first_name":"Sören","last_name":"Sparmann","full_name":"Sparmann, Sören"},{"first_name":"Rukiye","last_name":"Altin","full_name":"Altin, Rukiye"},{"last_name":"Mühling","first_name":"Andreas","full_name":"Mühling, Andreas"},{"last_name":"Schulte","first_name":"Carsten","full_name":"Schulte, Carsten"}],"status":"public","title":"Surfacing Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison","year":"2025","publication_status":"published","date_updated":"2026-02-26T13:02:37Z","publisher":"ACM","_id":"64719","user_id":"63216","doi":"10.1145/3769994.3770014","citation":{"chicago":"Sparmann, Sören, Rukiye Altin, Andreas Mühling, and Carsten Schulte. “Surfacing Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison.” In <i>Proceedings of the 25th Koli Calling International Conference on Computing Education Research</i>. ACM, 2025. <a href=\"https://doi.org/10.1145/3769994.3770014\">https://doi.org/10.1145/3769994.3770014</a>.","short":"S. Sparmann, R. Altin, A. Mühling, C. Schulte, in: Proceedings of the 25th Koli Calling International Conference on Computing Education Research, ACM, 2025.","ieee":"S. Sparmann, R. Altin, A. Mühling, and C. Schulte, “Surfacing Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison,” 2025, doi: <a href=\"https://doi.org/10.1145/3769994.3770014\">10.1145/3769994.3770014</a>.","apa":"Sparmann, S., Altin, R., Mühling, A., &#38; Schulte, C. (2025). Surfacing Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison. <i>Proceedings of the 25th Koli Calling International Conference on Computing Education Research</i>. <a href=\"https://doi.org/10.1145/3769994.3770014\">https://doi.org/10.1145/3769994.3770014</a>","bibtex":"@inproceedings{Sparmann_Altin_Mühling_Schulte_2025, title={Surfacing Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison}, DOI={<a href=\"https://doi.org/10.1145/3769994.3770014\">10.1145/3769994.3770014</a>}, booktitle={Proceedings of the 25th Koli Calling International Conference on Computing Education Research}, publisher={ACM}, author={Sparmann, Sören and Altin, Rukiye and Mühling, Andreas and Schulte, Carsten}, year={2025} }","ama":"Sparmann S, Altin R, Mühling A, Schulte C. Surfacing Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison. In: <i>Proceedings of the 25th Koli Calling International Conference on Computing Education Research</i>. ACM; 2025. doi:<a href=\"https://doi.org/10.1145/3769994.3770014\">10.1145/3769994.3770014</a>","mla":"Sparmann, Sören, et al. “Surfacing Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison.” <i>Proceedings of the 25th Koli Calling International Conference on Computing Education Research</i>, ACM, 2025, doi:<a href=\"https://doi.org/10.1145/3769994.3770014\">10.1145/3769994.3770014</a>."},"publication":"Proceedings of the 25th Koli Calling International Conference on Computing Education Research","date_created":"2026-02-26T12:59:47Z","type":"conference"},{"project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"citation":{"mla":"Winkler, Michael. “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters.” <i>Applied Mathematics &#38; Optimization</i>, vol. 91, no. 2, 44, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s00245-025-10243-9\">10.1007/s00245-025-10243-9</a>.","ama":"Winkler M. Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters. <i>Applied Mathematics &#38; Optimization</i>. 2025;91(2). doi:<a href=\"https://doi.org/10.1007/s00245-025-10243-9\">10.1007/s00245-025-10243-9</a>","bibtex":"@article{Winkler_2025, title={Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters}, volume={91}, DOI={<a href=\"https://doi.org/10.1007/s00245-025-10243-9\">10.1007/s00245-025-10243-9</a>}, number={244}, journal={Applied Mathematics &#38; Optimization}, publisher={Springer Science and Business Media LLC}, author={Winkler, Michael}, year={2025} }","apa":"Winkler, M. (2025). Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters. <i>Applied Mathematics &#38; Optimization</i>, <i>91</i>(2), Article 44. <a href=\"https://doi.org/10.1007/s00245-025-10243-9\">https://doi.org/10.1007/s00245-025-10243-9</a>","ieee":"M. Winkler, “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters,” <i>Applied Mathematics &#38; Optimization</i>, vol. 91, no. 2, Art. no. 44, 2025, doi: <a href=\"https://doi.org/10.1007/s00245-025-10243-9\">10.1007/s00245-025-10243-9</a>.","chicago":"Winkler, Michael. “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters.” <i>Applied Mathematics &#38; Optimization</i> 91, no. 2 (2025). <a href=\"https://doi.org/10.1007/s00245-025-10243-9\">https://doi.org/10.1007/s00245-025-10243-9</a>.","short":"M. Winkler, Applied Mathematics &#38; Optimization 91 (2025)."},"status":"public","volume":91,"user_id":"11829","publisher":"Springer Science and Business Media LLC","_id":"59258","issue":"2","publication":"Applied Mathematics & Optimization","department":[{"_id":"90"}],"type":"journal_article","date_created":"2025-04-02T11:23:25Z","intvolume":"        91","publication_status":"published","date_updated":"2026-02-26T15:59:30Z","publication_identifier":{"issn":["0095-4616","1432-0606"]},"author":[{"id":"31496","full_name":"Winkler, Michael","last_name":"Winkler","first_name":"Michael"}],"year":"2025","title":"Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters","doi":"10.1007/s00245-025-10243-9","language":[{"iso":"eng"}],"article_number":"44"},{"date_created":"2026-02-26T17:42:01Z","department":[{"_id":"10"},{"_id":"87"},{"_id":"93"}],"type":"journal_editor","citation":{"bibtex":"@book{Frahm_Glöckner_Hilgert_Olafsson_2025, title={Special issue of Journal of Lie Theory dedicated to Karl-Hermann Neeb on the occasion of his 60th birthday}, volume={35}, number={4}, journal={J. 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