[{"publication_status":"published","date_updated":"2025-03-10T15:27:29Z","year":"2025","status":"public","title":"Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System","author":[{"first_name":"Marcel Patrick Klaus","last_name":"Braun","full_name":"Braun, Marcel Patrick Klaus","id":"84156"},{"full_name":"Grydin, Olexandr","first_name":"Olexandr","last_name":"Grydin"},{"full_name":"Hoyer, Kay-Peter","first_name":"Kay-Peter","last_name":"Hoyer","id":"48411"},{"first_name":"Mirko","last_name":"Schaper","full_name":"Schaper, Mirko","id":"43720"}],"publication_identifier":{"isbn":["9783031810602","9783031810619"],"issn":["2367-1181","2367-1696"]},"conference":{"start_date":"2025-03-23","name":"TMS 2025. The Minerals, Metals & Materials","location":"LAs Vegas, USA","end_date":"2025-03-27"},"user_id":"48411","doi":"10.1007/978-3-031-81061-9_12","_id":"58950","language":[{"iso":"eng"}],"publisher":"Springer Nature Switzerland","quality_controlled":"1","publication":"The Minerals, Metals &amp; Materials Series","citation":{"ieee":"M. P. K. Braun, O. Grydin, K.-P. Hoyer, and M. Schaper, “Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System,” in <i>The Minerals, Metals &#38;amp; Materials Series</i>, Cham: Springer Nature Switzerland, 2025.","apa":"Braun, M. P. K., Grydin, O., Hoyer, K.-P., &#38; Schaper, M. (2025). Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System. In <i>The Minerals, Metals &#38;amp; Materials Series</i>. TMS 2025. The Minerals, Metals &#38; Materials, LAs Vegas, USA. Springer Nature Switzerland. <a href=\"https://doi.org/10.1007/978-3-031-81061-9_12\">https://doi.org/10.1007/978-3-031-81061-9_12</a>","short":"M.P.K. Braun, O. Grydin, K.-P. Hoyer, M. Schaper, in: The Minerals, Metals &#38;amp; Materials Series, Springer Nature Switzerland, Cham, 2025.","chicago":"Braun, Marcel Patrick Klaus, Olexandr Grydin, Kay-Peter Hoyer, and Mirko Schaper. “Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System.” In <i>The Minerals, Metals &#38;amp; Materials Series</i>. Cham: Springer Nature Switzerland, 2025. <a href=\"https://doi.org/10.1007/978-3-031-81061-9_12\">https://doi.org/10.1007/978-3-031-81061-9_12</a>.","mla":"Braun, Marcel Patrick Klaus, et al. “Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System.” <i>The Minerals, Metals &#38;amp; Materials Series</i>, Springer Nature Switzerland, 2025, doi:<a href=\"https://doi.org/10.1007/978-3-031-81061-9_12\">10.1007/978-3-031-81061-9_12</a>.","bibtex":"@inbook{Braun_Grydin_Hoyer_Schaper_2025, place={Cham}, title={Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System}, DOI={<a href=\"https://doi.org/10.1007/978-3-031-81061-9_12\">10.1007/978-3-031-81061-9_12</a>}, booktitle={The Minerals, Metals &#38;amp; Materials Series}, publisher={Springer Nature Switzerland}, author={Braun, Marcel Patrick Klaus and Grydin, Olexandr and Hoyer, Kay-Peter and Schaper, Mirko}, year={2025} }","ama":"Braun MPK, Grydin O, Hoyer K-P, Schaper M. Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System. In: <i>The Minerals, Metals &#38;amp; Materials Series</i>. Springer Nature Switzerland; 2025. doi:<a href=\"https://doi.org/10.1007/978-3-031-81061-9_12\">10.1007/978-3-031-81061-9_12</a>"},"type":"book_chapter","department":[{"_id":"9"},{"_id":"158"}],"date_created":"2025-03-10T15:25:17Z","place":"Cham"},{"status":"public","user_id":"65085","volume":3,"publisher":"DVS-Media","_id":"58971","quality_controlled":"1","citation":{"ama":"Haak V, Yang K, Meschut G. Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen. <i>Schweißen und Schneiden</i>. 2025;3. doi:<a href=\"https://doi.org/10.53192/SUS20250336\">10.53192/SUS20250336</a>","bibtex":"@article{Haak_Yang_Meschut_2025, title={Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen}, volume={3}, DOI={<a href=\"https://doi.org/10.53192/SUS20250336\">10.53192/SUS20250336</a>}, journal={Schweißen und Schneiden}, publisher={DVS-Media}, author={Haak, Viktor and Yang, Keke and Meschut, Gerson}, year={2025} }","mla":"Haak, Viktor, et al. “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen.” <i>Schweißen und Schneiden</i>, vol. 3, DVS-Media, 2025, doi:<a href=\"https://doi.org/10.53192/SUS20250336\">10.53192/SUS20250336</a>.","short":"V. Haak, K. Yang, G. Meschut, Schweißen und Schneiden 3 (2025).","chicago":"Haak, Viktor, Keke Yang, and Gerson Meschut. “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen.” <i>Schweißen und Schneiden</i> 3 (2025). <a href=\"https://doi.org/10.53192/SUS20250336\">https://doi.org/10.53192/SUS20250336</a>.","apa":"Haak, V., Yang, K., &#38; Meschut, G. (2025). Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen. <i>Schweißen und Schneiden</i>, <i>3</i>. <a href=\"https://doi.org/10.53192/SUS20250336\">https://doi.org/10.53192/SUS20250336</a>","ieee":"V. Haak, K. Yang, and G. Meschut, “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen,” <i>Schweißen und Schneiden</i>, vol. 3, 2025, doi: <a href=\"https://doi.org/10.53192/SUS20250336\">10.53192/SUS20250336</a>."},"publication_status":"published","date_updated":"2025-03-12T09:41:39Z","article_type":"original","intvolume":"         3","title":"Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen","year":"2025","author":[{"full_name":"Haak, Viktor","last_name":"Haak","first_name":"Viktor","id":"60398"},{"first_name":"Keke","last_name":"Yang","orcid":"0000-0001-9201-9304","full_name":"Yang, Keke","id":"65085"},{"full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","first_name":"Gerson","last_name":"Meschut","id":"32056"}],"doi":"10.53192/SUS20250336","main_file_link":[{"url":"https://www.schweissenundschneiden.de/artikel/einfluss-von-schweissparametern-und-montageverfahren-auf-die-elektrische-kontaktguete-von-aluminium-massebolzen"}],"language":[{"iso":"ger"}],"abstract":[{"text":"Ein wichtiger Bestandteil jeder Fahrzeugkarosserie sind Massebolzen, die zur Herstellung der elektrischen Schnittstelle zwischen der leitfähigen Karosserie und dem Bordnetz dienen. Eine zuverlässige Signal- und Leistungsübertragung erfor-dert minimale Übergangswiderstände an den elektrischen Anschlusspunkten des Massebolzensystems und muss ver-schiedenen Betriebs- und Umweltbedingungen über die gesamte Lebensdauer standhalten. Der Übergangswiderstand wird von mehreren Faktoren beeinflusst (z. B. Verbindungsgeometrie, Kontaktkraft, Temperatur, Werkstoff) und erhöht sich im Laufe der Betriebszeit infolge unterschiedlicher Alterungsmechanismen. Dieser Beitrag befasst sich mit der elektrischen Charakterisierung von Massebolzen aus AlMg5 mit einer ZnNi-beschichteten Stahl-Hutmutter auf einem AlMg3-Blech. Es werden ausgewählte fertigungs-, montage- und betriebsbedingte Einflussgrößen auf den elektrischen Verbindungs-widerstand analysiert. Als wirtschaftliche und etablierte Fügetechnologie kommt das Lichtbogenbolzenschweißen mit Hubzündung zum Einsatz. Zur Herstellung qualitativ hochwertiger Schweißverbindungen wird mittels einer statistischen Versuchsplanung ein geeigneter Referenzparametersatz ermittelt. Weiterhin wird der montagebedingte Einfluss anhand des Mutter-Anziehmoments bei der Kabelschuhmontage auf den elektrischen Verbindungswiderstand untersucht. Zusätzlich werden die Strombelastbarkeit und der maximal zulässige Betriebsbereich des Massebolzensystems ermittelt.","lang":"ger"}],"publication":"Schweißen und Schneiden","type":"journal_article","department":[{"_id":"157"}],"date_created":"2025-03-12T09:41:06Z"},{"_id":"59019","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://www.ndss-symposium.org/wp-content/uploads/usec25-1.pdf","open_access":"1"}],"user_id":"100966","publication_identifier":{"isbn":["979-8-9919276-5-9"]},"author":[{"full_name":"Last, Yorick","orcid":"0009-0008-9529-2427","first_name":"Yorick","last_name":"Last","id":"100966"},{"id":"92804","last_name":"Arias Cabarcos","first_name":"Patricia","full_name":"Arias Cabarcos, Patricia"}],"conference":{"name":"Symposium on Usable Security and Privacy (USEC) 2025","location":"San Diego, U.S.A."},"title":"Vision: Towards True User-Centric Design for Digital Identity Wallets","year":"2025","status":"public","date_updated":"2025-03-15T09:08:45Z","date_created":"2025-03-14T23:12:43Z","department":[{"_id":"679"}],"oa":"1","type":"conference","citation":{"mla":"Last, Yorick, and Patricia Arias Cabarcos. “Vision: Towards True User-Centric Design for Digital Identity Wallets.” <i>Symposium on Usable Security and Privacy (USEC) 2025</i>, 2025.","bibtex":"@inproceedings{Last_Arias Cabarcos_2025, title={Vision: Towards True User-Centric Design for Digital Identity Wallets}, booktitle={Symposium on Usable Security and Privacy (USEC) 2025}, author={Last, Yorick and Arias Cabarcos, Patricia}, year={2025} }","ama":"Last Y, Arias Cabarcos P. Vision: Towards True User-Centric Design for Digital Identity Wallets. In: <i>Symposium on Usable Security and Privacy (USEC) 2025</i>. ; 2025.","ieee":"Y. Last and P. Arias Cabarcos, “Vision: Towards True User-Centric Design for Digital Identity Wallets,” presented at the Symposium on Usable Security and Privacy (USEC) 2025, San Diego, U.S.A., 2025.","apa":"Last, Y., &#38; Arias Cabarcos, P. (2025). Vision: Towards True User-Centric Design for Digital Identity Wallets. <i>Symposium on Usable Security and Privacy (USEC) 2025</i>. Symposium on Usable Security and Privacy (USEC) 2025, San Diego, U.S.A.","chicago":"Last, Yorick, and Patricia Arias Cabarcos. “Vision: Towards True User-Centric Design for Digital Identity Wallets.” In <i>Symposium on Usable Security and Privacy (USEC) 2025</i>, 2025.","short":"Y. Last, P. Arias Cabarcos, in: Symposium on Usable Security and Privacy (USEC) 2025, 2025."},"publication":"Symposium on Usable Security and Privacy (USEC) 2025","abstract":[{"text":"To facilitate the growing demand for a universal means of digital identification across services, while preserving user control and privacy, multiple digital identity implementations have emerged. From a technical perspective, many of these rely on established concepts within cryptography, allowing them to provide benefits in terms of security and privacy. Recent legislation also promises broader recognition and acceptance of digital identities, both in the digital world and beyond. However, research into the usability, accessibility, and user understanding of digital identities is rare. We argue that the development of usable digital identity wallets is vital to the successful and inclusive application of digital identities in society. In this vision paper, we describe our research plans for obtaining a better understanding of how to develop these usable digital identities wallets.","lang":"eng"}]},{"editor":[{"last_name":"Rühl","first_name":"Meike","full_name":"Rühl, Meike"},{"full_name":"Siemoneit, Johannes Gabriel","first_name":"Johannes Gabriel","last_name":"Siemoneit"}],"user_id":"98462","edition":"1","_id":"59067","publisher":"Franz Steiner Verlag","page":"7-16","status":"public","place":"Stuttgart","citation":{"apa":"Rühl, M., &#38; Siemoneit, J. G. (2025). Einleitung. In M. Rühl &#38; J. G. Siemoneit (Eds.), <i>Literarische Fiktionalität in der Vormoderne. Beiträge zu Problemen und Perspektiven</i> (1st ed., pp. 7–16). Franz Steiner Verlag.","ieee":"M. Rühl and J. G. Siemoneit, “Einleitung,” in <i>Literarische Fiktionalität in der Vormoderne. Beiträge zu Problemen und Perspektiven</i>, 1st ed., M. Rühl and J. G. Siemoneit, Eds. Stuttgart: Franz Steiner Verlag, 2025, pp. 7–16.","chicago":"Rühl, Meike, and Johannes Gabriel Siemoneit. “Einleitung.” In <i>Literarische Fiktionalität in der Vormoderne. Beiträge zu Problemen und Perspektiven</i>, edited by Meike Rühl and Johannes Gabriel Siemoneit, 1st ed., 7–16. Stuttgart: Franz Steiner Verlag, 2025.","short":"M. Rühl, J.G. Siemoneit, in: M. Rühl, J.G. Siemoneit (Eds.), Literarische Fiktionalität in der Vormoderne. Beiträge zu Problemen und Perspektiven, 1st ed., Franz Steiner Verlag, Stuttgart, 2025, pp. 7–16.","mla":"Rühl, Meike, and Johannes Gabriel Siemoneit. “Einleitung.” <i>Literarische Fiktionalität in der Vormoderne. Beiträge zu Problemen und Perspektiven</i>, edited by Meike Rühl and Johannes Gabriel Siemoneit, 1st ed., Franz Steiner Verlag, 2025, pp. 7–16.","ama":"Rühl M, Siemoneit JG. Einleitung. In: Rühl M, Siemoneit JG, eds. <i>Literarische Fiktionalität in der Vormoderne. Beiträge zu Problemen und Perspektiven</i>. 1st ed. Franz Steiner Verlag; 2025:7-16.","bibtex":"@inbook{Rühl_Siemoneit_2025, place={Stuttgart}, edition={1}, title={Einleitung}, booktitle={Literarische Fiktionalität in der Vormoderne. Beiträge zu Problemen und Perspektiven}, publisher={Franz Steiner Verlag}, author={Rühl, Meike and Siemoneit, Johannes Gabriel}, editor={Rühl, Meike and Siemoneit, Johannes Gabriel}, year={2025}, pages={7–16} }"},"language":[{"iso":"ger"}],"main_file_link":[{"url":"https://doi.org/10.25162/9783515138369"}],"date_updated":"2025-03-18T18:45:59Z","publication_status":"published","author":[{"first_name":"Meike","last_name":"Rühl","full_name":"Rühl, Meike"},{"id":"98462","first_name":"Johannes Gabriel","last_name":"Siemoneit","orcid":"0000-0002-2543-2331","full_name":"Siemoneit, Johannes Gabriel"}],"publication_identifier":{"isbn":["978-3-515-13832-1"],"eisbn":["978-3-515-13836-9"]},"year":"2025","title":"Einleitung","department":[{"_id":"25"}],"type":"book_chapter","date_created":"2025-03-18T18:45:36Z","publication":"Literarische Fiktionalität in der Vormoderne. Beiträge zu Problemen und Perspektiven"},{"citation":{"mla":"Neuser, Moritz, et al. “Processing of the Hypoeutectic AlSi9 Alloy with Twin-Roll Casting by Using Copper Shells.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-26\">10.21741/9781644903551-26</a>.","ama":"Neuser M, Hoyer K-P, Schaper M. Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-26\">10.21741/9781644903551-26</a>","bibtex":"@inproceedings{Neuser_Hoyer_Schaper_2025, title={Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-26\">10.21741/9781644903551-26</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Neuser, Moritz and Hoyer, Kay-Peter and Schaper, Mirko}, year={2025} }","apa":"Neuser, M., Hoyer, K.-P., &#38; Schaper, M. (2025). Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-26\">https://doi.org/10.21741/9781644903551-26</a>","ieee":"M. Neuser, K.-P. Hoyer, and M. Schaper, “Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-26\">10.21741/9781644903551-26</a>.","short":"M. Neuser, K.-P. Hoyer, M. Schaper, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","chicago":"Neuser, Moritz, Kay-Peter Hoyer, and Mirko Schaper. “Processing of the Hypoeutectic AlSi9 Alloy with Twin-Roll Casting by Using Copper Shells.” In <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-26\">https://doi.org/10.21741/9781644903551-26</a>."},"quality_controlled":"1","_id":"59154","publisher":"Materials Research Forum LLC","volume":52,"user_id":"48411","status":"public","date_created":"2025-03-26T15:15:15Z","department":[{"_id":"9"},{"_id":"158"}],"type":"conference","publication":"Materials Research Proceedings","abstract":[{"lang":"eng","text":"<jats:p>Abstract. Lightweight design is one of the central topics of the automotive industry since reducing mass can save emissions over the entire life cycle of a component. Nowadays, vehicle structures usually consist of a multi-material design, which poses the additional challenge of joining these different materials. Mechanical joining is the most common way of joining different types of materials. Cast aluminium alloys of the AlSi system have a low ductility, which causes cracks during the mechanical joining process in the joint. One research approach is to achieve a fine microstructure by influencing the solidification rate since this results in increased mechanical properties, specifically the elongation at fracture and yield strength. A very fine microstructure can be achieved by utilizing Twin-roll casting (TRC) which is a continuous casting process in which high solidification rates of more than 100 K/s occur. In this study, the hypoeutectic cast aluminium alloy AlSi9 is processed in the TRC process using copper rollers. The cast strips are investigated regarding the microstructure-property correlation. A variation of the roller materials and cooling conditions allows for an increase in the solidification rate, whereby a defined, fine microstructure can be achieved, which enhances the mechanical properties of the hypoeutectic aluminium casting alloys.</jats:p>"}],"language":[{"iso":"eng"}],"doi":"10.21741/9781644903551-26","publication_identifier":{"issn":["2474-395X"]},"author":[{"id":"32340","full_name":"Neuser, Moritz","last_name":"Neuser","first_name":"Moritz"},{"full_name":"Hoyer, Kay-Peter","last_name":"Hoyer","first_name":"Kay-Peter","id":"48411"},{"id":"43720","full_name":"Schaper, Mirko","first_name":"Mirko","last_name":"Schaper"}],"title":"Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells","year":"2025","intvolume":"        52","date_updated":"2025-03-26T15:17:46Z","publication_status":"published"},{"quality_controlled":"1","citation":{"ama":"Lauth M, Hoyer K-P, Schaper M, Gräfen W. Cost-effective repair solution for twin-roll-caster rollers. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-5\">10.21741/9781644903551-5</a>","bibtex":"@inproceedings{Lauth_Hoyer_Schaper_Gräfen_2025, title={Cost-effective repair solution for twin-roll-caster rollers}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-5\">10.21741/9781644903551-5</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Lauth, Martin and Hoyer, Kay-Peter and Schaper, Mirko and Gräfen, Winfried}, year={2025} }","mla":"Lauth, Martin, et al. “Cost-Effective Repair Solution for Twin-Roll-Caster Rollers.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-5\">10.21741/9781644903551-5</a>.","chicago":"Lauth, Martin, Kay-Peter Hoyer, Mirko Schaper, and Winfried Gräfen. “Cost-Effective Repair Solution for Twin-Roll-Caster Rollers.” In <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-5\">https://doi.org/10.21741/9781644903551-5</a>.","short":"M. Lauth, K.-P. Hoyer, M. Schaper, W. Gräfen, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","apa":"Lauth, M., Hoyer, K.-P., Schaper, M., &#38; Gräfen, W. (2025). Cost-effective repair solution for twin-roll-caster rollers. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-5\">https://doi.org/10.21741/9781644903551-5</a>","ieee":"M. Lauth, K.-P. Hoyer, M. Schaper, and W. Gräfen, “Cost-effective repair solution for twin-roll-caster rollers,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-5\">10.21741/9781644903551-5</a>."},"status":"public","user_id":"48411","volume":52,"_id":"59155","publisher":"Materials Research Forum LLC","abstract":[{"text":"<jats:p>Abstract. Twin-Roll-Casting (TRC) is an energy- and cost-efficient process to produce near-net-shape aluminum strips. Due to the high affinity of molten aluminum to steel surfaces, those rollers show signs of wear throughout the rolling campaign. This leads to the necessity of restoring the worn surfaces to suitable parameters. The easiest way is to grind the surface till all superficial defects are omitted. However, the thickness of the roller is not endless, therefore the rollers must be replaced after a certain amount of surface reconditioning. This ultimately leads to the non-usability of the roller. This research shows a route to recondition the surface including the possibility of renewing worn-down surfaces with an energy- and cost-efficient high-velocity oxygen fuel (HVOF) treatment with subsequent grinding to the desired initial surface parameters.</jats:p>","lang":"eng"}],"publication":"Materials Research Proceedings","type":"conference","department":[{"_id":"9"},{"_id":"158"}],"date_created":"2025-03-26T15:16:31Z","date_updated":"2025-03-26T15:17:51Z","publication_status":"published","intvolume":"        52","title":"Cost-effective repair solution for twin-roll-caster rollers","year":"2025","author":[{"last_name":"Lauth","first_name":"Martin","full_name":"Lauth, Martin","id":"13858"},{"id":"48411","last_name":"Hoyer","first_name":"Kay-Peter","full_name":"Hoyer, Kay-Peter"},{"last_name":"Schaper","first_name":"Mirko","full_name":"Schaper, Mirko","id":"43720"},{"first_name":"Winfried","last_name":"Gräfen","full_name":"Gräfen, Winfried"}],"publication_identifier":{"issn":["2474-395X"]},"doi":"10.21741/9781644903551-5","language":[{"iso":"eng"}]},{"year":"2025","status":"public","title":"Influence of pre-shearing on the rheological properties of filled rubber compounds","author":[{"first_name":"Dennis","last_name":"Kleinschmidt","full_name":"Kleinschmidt, Dennis","id":"40516"},{"first_name":"Florian","last_name":"Brüning","full_name":"Brüning, Florian","id":"72920"}],"date_updated":"2025-03-27T14:13:53Z","language":[{"iso":"eng"}],"_id":"59130","user_id":"59363","publication":"KGK Kautschuk Gummi Kunststoffe","citation":{"ama":"Kleinschmidt D, Brüning F. Influence of pre-shearing on the rheological properties of filled rubber compounds. <i>KGK Kautschuk Gummi Kunststoffe</i>. Published online 2025.","bibtex":"@article{Kleinschmidt_Brüning_2025, title={Influence of pre-shearing on the rheological properties of filled rubber compounds}, journal={KGK Kautschuk Gummi Kunststoffe}, author={Kleinschmidt, Dennis and Brüning, Florian}, year={2025} }","mla":"Kleinschmidt, Dennis, and Florian Brüning. “Influence of Pre-Shearing on the Rheological Properties of Filled Rubber Compounds.” <i>KGK Kautschuk Gummi Kunststoffe</i>, 2025.","short":"D. Kleinschmidt, F. Brüning, KGK Kautschuk Gummi Kunststoffe (2025).","chicago":"Kleinschmidt, Dennis, and Florian Brüning. “Influence of Pre-Shearing on the Rheological Properties of Filled Rubber Compounds.” <i>KGK Kautschuk Gummi Kunststoffe</i>, 2025.","apa":"Kleinschmidt, D., &#38; Brüning, F. (2025). Influence of pre-shearing on the rheological properties of filled rubber compounds. <i>KGK Kautschuk Gummi Kunststoffe</i>.","ieee":"D. Kleinschmidt and F. Brüning, “Influence of pre-shearing on the rheological properties of filled rubber compounds,” <i>KGK Kautschuk Gummi Kunststoffe</i>, 2025."},"quality_controlled":"1","date_created":"2025-03-25T09:55:44Z","type":"journal_article","keyword":["Rheologie","Viskosität","Wandgleiten"],"department":[{"_id":"9"},{"_id":"321"},{"_id":"367"}]},{"citation":{"short":"D. Beverungen, C. Lehrer, M. Trier, eds., Transforming the Digitally Sustainable Enterprise, Springer Nature Switzerland, Cham, 2025.","chicago":"Beverungen, Daniel, Christiane Lehrer, and Matthias Trier, eds. <i>Transforming the Digitally Sustainable Enterprise</i>. Cham: Springer Nature Switzerland, 2025. <a href=\"https://doi.org/10.1007/978-3-031-80125-9\">https://doi.org/10.1007/978-3-031-80125-9</a>.","apa":"Beverungen, D., Lehrer, C., &#38; Trier, M. (Eds.). (2025). <i>Transforming the Digitally Sustainable Enterprise</i>. Springer Nature Switzerland. <a href=\"https://doi.org/10.1007/978-3-031-80125-9\">https://doi.org/10.1007/978-3-031-80125-9</a>","ieee":"D. Beverungen, C. Lehrer, and M. Trier, Eds., <i>Transforming the Digitally Sustainable Enterprise</i>. Cham: Springer Nature Switzerland, 2025.","ama":"Beverungen D, Lehrer C, Trier M, eds. <i>Transforming the Digitally Sustainable Enterprise</i>. Springer Nature Switzerland; 2025. doi:<a href=\"https://doi.org/10.1007/978-3-031-80125-9\">10.1007/978-3-031-80125-9</a>","bibtex":"@book{Beverungen_Lehrer_Trier_2025, place={Cham}, title={Transforming the Digitally Sustainable Enterprise}, DOI={<a href=\"https://doi.org/10.1007/978-3-031-80125-9\">10.1007/978-3-031-80125-9</a>}, publisher={Springer Nature Switzerland}, year={2025} }","mla":"Beverungen, Daniel, et al., editors. <i>Transforming the Digitally Sustainable Enterprise</i>. Springer Nature Switzerland, 2025, doi:<a href=\"https://doi.org/10.1007/978-3-031-80125-9\">10.1007/978-3-031-80125-9</a>."},"type":"book_editor","department":[{"_id":"526"}],"place":"Cham","date_created":"2025-03-28T14:53:09Z","date_updated":"2025-03-28T14:54:46Z","publication_status":"published","status":"public","title":"Transforming the Digitally Sustainable Enterprise","year":"2025","publication_identifier":{"isbn":["9783031801242","9783031801259"],"issn":["2195-4968","2195-4976"]},"doi":"10.1007/978-3-031-80125-9","user_id":"21671","editor":[{"full_name":"Beverungen, Daniel","last_name":"Beverungen","first_name":"Daniel","id":"59677"},{"last_name":"Lehrer","first_name":"Christiane","full_name":"Lehrer, Christiane"},{"first_name":"Matthias","last_name":"Trier","full_name":"Trier, Matthias","id":"72744"}],"alternative_title":["Proceedings of the 18th International Conference on Wirtschaftsinformatik, Paderborn, Germany, 2023, Vol. 3"],"language":[{"iso":"eng"}],"_id":"59182","publisher":"Springer Nature Switzerland"},{"department":[{"_id":"9"}],"type":"dissertation","keyword":["Heat transfer","PCM","numerical simulation","renewable energy","heat storage"],"place":"Paderborn","date_created":"2025-04-02T09:25:58Z","abstract":[{"text":"Diese Arbeit behandelt die Modellierung und Optimierung von mit Phasenwechselmaterialien (PCM) ausgestatteten, energietechnischen Komponenten anhand zweier Fallstudien. PCM sind Materialien, deren Phasenwechseleigenschaften während des Schmelzens und Erstarrens für Heiz- und Kühlzwecke genutzt werden. Zunächst werden die theoretischen Grundlagen zu Wärmeübertragungsproblemen mit Phasenwechsel erörtert und entsprechende numerische Lösungsmethoden diskutiert. Ein Modell für Phasenwechselvorgänge wird vorgestellt, welches anhand analytischer Lösungen validiert wurde und in den Fallstudien zum Einsatz kam. Für beide Fallstudien wird der Stand der Technik erörtert und die entsprechenden Forschungsfragen werden formuliert. Die erste Fallstudie behandelt PCM-integrierte Photovoltaikmodule und die zweite Festbett-Latentwärmespeicher, welche nicht-kugelförmiger PCM-Kapseln verwenden. Für beide Systeme wurden thermische Model-le entwickelt und anhand experimenteller Daten mit guter Genauigkeit validiert. Diese Modelle wurden in Parameterstudien eingesetzt, um optimierte Systemkonfigurationen zu identifizieren. Die vorgestellten Ergebnisse zeigen, dass ein PCM-Kühlkörper mit ausreichender Dicke und Wärmeleitfähigkeit den Wirkungsgrad und die Lebensdauer von Photovoltaikmodulen erheblich erhöht. Darüber hinaus verbessern PCM-Kapseln mit hoher Packungs-dichte und Oberfläche sowohl die volumenspezifische Speicherkapazität als auch die thermische Leistung von Festbett-Latentwärmespeichern.","lang":"ger"},{"lang":"eng","text":"This thesis explores the modeling and optimization of energy system components incorporating phase change materials (PCM) through two different case studies. PCM are materials whose phase change characteristics during melting and solidification are utilized for heating and cooling purposes. The theoretical foundations of heat transfer problems involving phase change, along with the relevant numerical solution methods, are discussed. A phase change model is presented, which was validated against analytical solutions and applied in the case studies. For both case studies, a review of the state of the art is provided, followed by the formulation of specific research problems. The first case study investigated PCM-enhanced photovoltaic modules, while the second focused on packed bed latent heat storages (PBLHS) utilizing non-spherical PCM capsules. Thermal models were developed for both systems and validated with good accuracy against experimental data. These models were employed in parameter studies to identify optimized system configurations. The presented results demonstrate that a PCM heat sink with sufficient thickness and thermal conductivity can significantly improve the efficiency and lifespan of photovoltaic modules. Furthermore, PCM capsules with both high packing density and surface area increase the volume-specific storage capacity and thermal power output of PBLHS."}],"supervisor":[{"first_name":"Eugeny","last_name":"Kenig","full_name":"Kenig, Eugeny","id":"665"}],"citation":{"mla":"Grabo, Matti. <i>Modeling and Optimization of Energy System Components Equipped with Phase Change Materials</i>. 2025, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2199\">10.17619/UNIPB/1-2199</a>.","bibtex":"@book{Grabo_2025, place={Paderborn}, title={Modeling and optimization of energy system components equipped with phase change materials}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-2199\">10.17619/UNIPB/1-2199</a>}, author={Grabo, Matti}, year={2025} }","ama":"Grabo M. <i>Modeling and Optimization of Energy System Components Equipped with Phase Change Materials</i>.; 2025. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2199\">10.17619/UNIPB/1-2199</a>","ieee":"M. Grabo, <i>Modeling and optimization of energy system components equipped with phase change materials</i>. Paderborn, 2025.","apa":"Grabo, M. (2025). <i>Modeling and optimization of energy system components equipped with phase change materials</i>. <a href=\"https://doi.org/10.17619/UNIPB/1-2199\">https://doi.org/10.17619/UNIPB/1-2199</a>","short":"M. Grabo, Modeling and Optimization of Energy System Components Equipped with Phase Change Materials, Paderborn, 2025.","chicago":"Grabo, Matti. <i>Modeling and Optimization of Energy System Components Equipped with Phase Change Materials</i>. Paderborn, 2025. <a href=\"https://doi.org/10.17619/UNIPB/1-2199\">https://doi.org/10.17619/UNIPB/1-2199</a>."},"doi":"10.17619/UNIPB/1-2199","user_id":"66520","_id":"59239","language":[{"iso":"eng"}],"date_updated":"2025-04-02T09:44:05Z","publication_status":"published","author":[{"full_name":"Grabo, Matti","last_name":"Grabo","first_name":"Matti","id":"66520"}],"status":"public","year":"2025","title":"Modeling and optimization of energy system components equipped with phase change materials"},{"abstract":[{"text":"In dieser Arbeit betrachten wir algorithmische Lösungen für fundamentale Probleme in modernen Kommunikationsnetzen. Im ersten Teil dieser Arbeit zeigen wir, wie man ein Overlay-Netzwerk mit Grades und Durchmesser O(log n) in O(log n) Runden ausgehend von einem beliebigen, schwach verbundenen Graphen konstruiert. Wir gehen von einem synchronen Kommunikationsnetz aus, in dem Knoten Nachrichten an alle Knoten senden können, deren Adresse sie kennen, und neue Verbindungen durch das Versenden dieser Adressen hergestellt werden können. Wenn der Ausgangsgraph des Netzwerks schwach zusammenhängend ist und einen konstanten Grad hat, dann konstruiert unser Algorithmus die gewünschte Topologie mit hoher Wahrscheinlichkeit in O(log n) Runden, wobei in jeder Runde nur O(log n) Nachrichten sendet und empfängt. Da das Problem nicht schneller gelöst werden kann als durch sogenanntes Pointer Doubling für O(log n) Runden (was sogar erfordern würde, dass jeder Knoten Ω(n) Bits kommuniziert), ist unser Algorithmus asymptotisch optimal. Außerdem zeigen wir, wie unser Algorithmus zur effizienten Lösung von Graphenproblemen im HYBRID modelverwendet werden kann. Motiviert durch die Idee, dass Knoten zwei verschiedene Arten der Kommunikation besitzen, nehmen wir an, dass die Kommunikation der Kanten unbeschränkt ist, während nur polylogarithmisch viele Nachrichten über Kanten gesendet werden können, die während der Ausführung eines Algorithmus etabliert wurden. Für einen (ungerichteten) Graphen G mit beliebigem Grad zeigen wir, wie man zusammenhängende Komponenten und einen Spannwald mit hoher Wahrscheinlichkeit in O(log n) Zeitberechnen kann. Außerdem zeigen wir, wie man ein MIS mit hoher Wahrscheinlichkeit in O(log ∆ + log log n), berechnet, wobei ∆ der Grad von G ist. Im zweiten Teil der Arbeit betrachten wir das Problem der Berechnung von kompakten Routing-Tabellen und Dekompositionen mit geringem Durchmesser für einen (gewichteten) Graphen G := (V, E, ℓ), der durch k kürzeste Wege separiert werden kann. Zu dieser Klasse von Graphen gehören planare Graphen, Graphen mit beschränkter Treewidth und Graphen, die einen festen Minor Kr ausschließen. Wir präsentieren Algorithmen im CONGEST- und im neuartigen HYBRID-Kommunikationsmodell, die in allen relevanten Parametern konkurrenzfähig sind:• Für einen gegebenen Parameter ϵ &gt; 0 berechnen wir ein Routing-Schema mit Stretch 1 + ϵ. Unser Schema berechnet Label der Größe Oe(kϵ−2) und wird in Oe(kϵ−3) Zeit im HYBRID-Modell, und Oe(kϵ−3· HD) Zeit in CONGEST. Dabei bezeichnet HD den Hopdurchmesser des Graphen.• Für einem Parameter D &gt; 0 unterteilt unser Algorithmus zur Dekomposition den Graphen in zusammenhängende Subgraphen mit starkem Durchmesser D. Eine Kante e ∈ E der Länge ℓe hat ihre Endpunkte in zwei verschieden Subgraphen mit der Wahrscheinlichkeit O(ℓe·log(k log n)/D). Die Dekomposition kann in Oe(k) Zeit im HYBRID-Modell und O˜(kHD) Zeit in CONGEST berechnet werden. Wir stellen verteilte und parallele Implementierungen von sequenziellen Divide-and-Conquer-Algorithmen vor, bei denen wir exakte kürzeste Pfade durch approximative kürzeste Pfade ersetzen. Im Gegensatz zu exakten Pfaden können diese in der verteilten und parallelen Umgebung effizient berechnet werden. Außerdem, zeigen wir, dass es ausreicht, anstelle der expliziten Berechnung von Vertex-Separatoren, einige zufällige Pfade begrenzter Länge zu wählen und die Separatoren um diese herum zu konstruieren. Schließlich stellen wir einen SetCover-Algorithmus für das Beeping-Modell vor. Unser Algorithmus läuft in O(k3) Zeit und hat eine erwartete Approximationsgüte von O(∆3/k log2 ∆). Der Wert k ∈ [3, log ∆] ist ein Parameter, mit dem wir Laufzeit gegen Approximationsgüte eintauschen können, ähnlich wie bei dem Algorithmus von Kuhn und Wattenhofer [PODC ’03]. Dieser Algorithmus kann erweitert werden, um das DominatingSet-Problem in der D-Nachbarschaft eines Graphen mittles eines verteiltes Algorithmus effizient zu lösen.","lang":"eng"},{"text":"This thesis considers algorithmic solutions to problems that arise in the theoretical study of modern communication networks, such ast he Internet. The thesis is divided into two main parts. In the first part of this thesis, we show how to construct an overlay network of degree O(log n) and diameter O(log n) in O(log n) time starting from an arbitrary weakly connected graph. We assume a synchronous communication network in which nodes can send messages to nodes they know the identifier of, and new connections can be established by sending node identifiers. If the initial network’s graph is weakly connected and has constant degree, then our algorithm constructs the desired topology with each node sending and receiving only O(log n) messages in each round in time O(log n), w.h.p. Since the problem cannot be solved faster than by using pointer jumping for O(log n) rounds (which would even require each node to communicate Ω(n) bits), our algorithm is asymptotically optimal. Additionally, we show how our algorithm can be used to efficiently solvegraph problems in the novel HYBRID model. Motivated by the idea that nodes possess two different modes of communication, we assume that communication of the initial edges is unrestricted, whereas only polylogarithmically many messages can be sent over edges that have been established throughout an algorithm’s execution. For an (undirected) graph G with arbitrary degree, we show how tocompute connected components and a spanning forest in O(log n) time, w.h.p. Furthermore, we show how to compute an MIS in timeO(log ∆ + log log n), w.h.p., where ∆ is the initial degree of G. In the second part of the thesis, we consider the problems of computing compact routing tables and low-diameter decompositions for a (weighted) graph G := (V, E, ℓ) that can be separated through k shortest paths. This class of graphs includes planar graphs, graphs of bounded treewidth, and graphs that exclude a fixed minor Kr. We present algorithms in the CONGEST and the novel HYBRID communication model that are competitive in all relevant parameters:• For a given parameter ϵ &gt; 0, we compute a routing scheme with stretch 1 + ϵ. Our scheme computes labels of size Oe(kϵ−2)and is computed in Oe(kϵ−3) time in the HYBRID model and Oe(kϵ−3· HD) time in CONGEST. Here, HD denotes thenetwork’s hop diameter.• Given a parameter D &gt; 0, our low-diameter decomposition algorithm divides the graph into connected subgraphs of strongdiameter D. An edge e ∈ E of length ℓe has endpoints in different subgraphs with probability O(ℓe·log(k log n)/D). The decomposition can be computed in Oe(k) time in the HYBRID model and O˜(kHD) time in CONGEST.Broadly speaking, we present distributed and parallel implementations of sequential divide-and-conquer algorithms where we replaceexact shortest paths with approximate shortest paths. In contrast to exact paths, these can be efficiently computed in the distributed and parallel setting. Further, and perhaps more importantly, we show that instead of explicitly computing vertex-separators to enable efficientparallelization of these algorithms, it suffices to sample a few random paths of bounded length and the nodes close to them. Finally, we present a SetCover algorithm in the Beeping model. Our algorithm runs in O(k3) time and has an expected approximation ratio ofO(∆3/k log2 ∆). The value k ∈ [3, log ∆] is a parameter that lets us trade runtime for approximation ratio similar to the celebrated algorithm by Kuhn and Wattenhofer [PODC ’03]. This algorithm can then be extended to effieciently solve the DominatingSet-problem in a graph’s D-neigborhood in a distributed fashion.","lang":"eng"}],"extern":"1","citation":{"short":"T. Götte, Distributed Algorithms for Modern Communication Networks, LibreCat University, 2025.","chicago":"Götte, Thorsten. <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University, 2025. <a href=\"https://doi.org/10.17619/UNIPB/1-2217\">https://doi.org/10.17619/UNIPB/1-2217</a>.","apa":"Götte, T. (2025). <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University. <a href=\"https://doi.org/10.17619/UNIPB/1-2217\">https://doi.org/10.17619/UNIPB/1-2217</a>","ieee":"T. Götte, <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University, 2025.","ama":"Götte T. <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University; 2025. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2217\">10.17619/UNIPB/1-2217</a>","bibtex":"@book{Götte_2025, title={Distributed Algorithms for Modern Communication Networks}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-2217\">10.17619/UNIPB/1-2217</a>}, publisher={LibreCat University}, author={Götte, Thorsten}, year={2025} }","mla":"Götte, Thorsten. <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University, 2025, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2217\">10.17619/UNIPB/1-2217</a>."},"type":"dissertation","date_created":"2025-04-02T14:02:32Z","date_updated":"2025-04-02T14:07:48Z","status":"public","title":"Distributed Algorithms for Modern Communication Networks","year":"2025","author":[{"full_name":"Götte, Thorsten","last_name":"Götte","first_name":"Thorsten"}],"doi":"10.17619/UNIPB/1-2217","user_id":"34727","language":[{"iso":"eng"}],"_id":"59263","publisher":"LibreCat University"},{"_id":"60286","language":[{"iso":"eng"}],"user_id":"59363","author":[{"id":"45326","full_name":"Austermeier, Laura","first_name":"Laura","last_name":"Austermeier"}],"title":"Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern","status":"public","year":"2025","date_updated":"2025-06-20T07:04:08Z","date_created":"2025-06-20T07:03:49Z","department":[{"_id":"9"},{"_id":"321"},{"_id":"367"}],"type":"dissertation","citation":{"mla":"Austermeier, Laura. <i>Vorhersagemodell Zum Ortsaufgelösten Energieeintrag in Dichtkämmenden Gleichdrall-Doppelschneckenextrudern</i>. 2025.","ama":"Austermeier L. <i>Vorhersagemodell Zum Ortsaufgelösten Energieeintrag in Dichtkämmenden Gleichdrall-Doppelschneckenextrudern</i>.; 2025.","bibtex":"@book{Austermeier_2025, title={Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern}, author={Austermeier, Laura}, year={2025} }","apa":"Austermeier, L. (2025). <i>Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern</i>.","ieee":"L. Austermeier, <i>Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern</i>. 2025.","chicago":"Austermeier, Laura. <i>Vorhersagemodell Zum Ortsaufgelösten Energieeintrag in Dichtkämmenden Gleichdrall-Doppelschneckenextrudern</i>, 2025.","short":"L. Austermeier, Vorhersagemodell Zum Ortsaufgelösten Energieeintrag in Dichtkämmenden Gleichdrall-Doppelschneckenextrudern, 2025."}},{"_id":"60287","language":[{"iso":"eng"}],"user_id":"59363","status":"public","year":"2025","title":"Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds","author":[{"full_name":"Scholle, Maximilian","first_name":"Maximilian","last_name":"Scholle","id":"35736"}],"date_updated":"2025-06-20T07:06:29Z","date_created":"2025-06-20T07:06:25Z","type":"dissertation","department":[{"_id":"9"},{"_id":"321"},{"_id":"367"}],"citation":{"bibtex":"@book{Scholle_2025, title={Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds}, author={Scholle, Maximilian}, year={2025} }","ama":"Scholle M. <i>Die Verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds</i>.; 2025.","mla":"Scholle, Maximilian. <i>Die Verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds</i>. 2025.","short":"M. Scholle, Die Verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds, 2025.","chicago":"Scholle, Maximilian. <i>Die Verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds</i>, 2025.","ieee":"M. Scholle, <i>Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds</i>. 2025.","apa":"Scholle, M. (2025). <i>Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds</i>."},"extern":"1"},{"language":[{"iso":"eng"}],"article_number":"01069","doi":"10.1051/matecconf/202540801069","publication_identifier":{"issn":["2261-236X"]},"author":[{"id":"44935","full_name":"Holtkamp, Pia Katharina","first_name":"Pia Katharina","last_name":"Holtkamp"},{"full_name":"Wituschek, Simon","last_name":"Wituschek","first_name":"Simon","id":"83423"},{"first_name":"Michael","last_name":"Lechner","full_name":"Lechner, Michael"},{"full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson","id":"32056"}],"title":"Integration of multiple-linear and tumbling kinematics into self-piercing riveting","year":"2025","intvolume":"       408","publication_status":"published","date_updated":"2025-06-27T08:34:46Z","date_created":"2025-06-27T08:27:42Z","department":[{"_id":"43"},{"_id":"157"}],"type":"journal_article","publication":"MATEC Web of Conferences","abstract":[{"text":"Conventional mechanical joining processes are typically rigid in their tool systems and can only react to changing process and disturbance variables to a limited extent. At the same time, various industries are increasingly trending towards multi-material systems consisting of parts with varying geometric and mechanical properties. Due to the varying properties, rigid mechanical joining processes require sampling procedures and periodic changes of tool components or auxiliary joining parts. Consequently, research is focusing on versatile mechanical joining processes that allow increased control by modifying the process parameters. Two processes based on self-piercing riveting can achieve a significant increase in process influence possibilities through a multi-linear actuator as versatile self-piercing riveting (V-SPR) and a tumbling superimposed actuator as tumbling self-piercing riveting (T-SPR). Initial research into V-SPR has shown that this process can be used to achieve a higher variation in overall package thickness by adapting the rivet geometry and using multiple linear actuators. The T-SPR process also enables increased material flow control by means of targeted compression of the rivet using the tumbling actuator, thereby extending the range of joints that can be manufactured. Based on these two processes, a combination of the two mechanisms of action is to be developed.","lang":"eng"}],"_id":"60441","publisher":"EDP Sciences","volume":408,"user_id":"44935","status":"public","citation":{"ieee":"P. K. Holtkamp, S. Wituschek, M. Lechner, and G. Meschut, “Integration of multiple-linear and tumbling kinematics into self-piercing riveting,” <i>MATEC Web of Conferences</i>, vol. 408, Art. no. 01069, 2025, doi: <a href=\"https://doi.org/10.1051/matecconf/202540801069\">10.1051/matecconf/202540801069</a>.","apa":"Holtkamp, P. K., Wituschek, S., Lechner, M., &#38; Meschut, G. (2025). Integration of multiple-linear and tumbling kinematics into self-piercing riveting. <i>MATEC Web of Conferences</i>, <i>408</i>, Article 01069. <a href=\"https://doi.org/10.1051/matecconf/202540801069\">https://doi.org/10.1051/matecconf/202540801069</a>","short":"P.K. Holtkamp, S. Wituschek, M. Lechner, G. Meschut, MATEC Web of Conferences 408 (2025).","chicago":"Holtkamp, Pia Katharina, Simon Wituschek, Michael Lechner, and Gerson Meschut. “Integration of Multiple-Linear and Tumbling Kinematics into Self-Piercing Riveting.” <i>MATEC Web of Conferences</i> 408 (2025). <a href=\"https://doi.org/10.1051/matecconf/202540801069\">https://doi.org/10.1051/matecconf/202540801069</a>.","mla":"Holtkamp, Pia Katharina, et al. “Integration of Multiple-Linear and Tumbling Kinematics into Self-Piercing Riveting.” <i>MATEC Web of Conferences</i>, vol. 408, 01069, EDP Sciences, 2025, doi:<a href=\"https://doi.org/10.1051/matecconf/202540801069\">10.1051/matecconf/202540801069</a>.","bibtex":"@article{Holtkamp_Wituschek_Lechner_Meschut_2025, title={Integration of multiple-linear and tumbling kinematics into self-piercing riveting}, volume={408}, DOI={<a href=\"https://doi.org/10.1051/matecconf/202540801069\">10.1051/matecconf/202540801069</a>}, number={01069}, journal={MATEC Web of Conferences}, publisher={EDP Sciences}, author={Holtkamp, Pia Katharina and Wituschek, Simon and Lechner, Michael and Meschut, Gerson}, year={2025} }","ama":"Holtkamp PK, Wituschek S, Lechner M, Meschut G. Integration of multiple-linear and tumbling kinematics into self-piercing riveting. <i>MATEC Web of Conferences</i>. 2025;408. doi:<a href=\"https://doi.org/10.1051/matecconf/202540801069\">10.1051/matecconf/202540801069</a>"},"project":[{"_id":"130","grant_number":"418701707","name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285 – C02: TRR 285 - Subproject C02","_id":"146"}],"quality_controlled":"1"},{"publication_status":"published","date_updated":"2025-06-27T08:17:00Z","intvolume":"        52","year":"2025","title":"Non-destructive testing in versatile joining processes","publication_identifier":{"issn":["2474-395X"]},"author":[{"first_name":"M.","last_name":"Lechner","full_name":"Lechner, M."},{"id":"83141","full_name":"Borgert, Thomas","first_name":"Thomas","last_name":"Borgert"},{"id":"83421","full_name":"Busch, Matthias","first_name":"Matthias","last_name":"Busch","orcid":"https://orcid.org/0000-0002-8456-3374"},{"first_name":"A.","last_name":"Harms","full_name":"Harms, A."},{"id":"44935","first_name":"Pia Katharina","last_name":"Holtkamp","full_name":"Holtkamp, Pia Katharina"},{"last_name":"Römisch","first_name":"D.","full_name":"Römisch, D."},{"full_name":"Wituschek, Simon","first_name":"Simon","last_name":"Wituschek","id":"83423"},{"id":"66459","last_name":"Kappe","first_name":"Fabian","full_name":"Kappe, Fabian"}],"doi":"10.21741/9781644903551-12","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Abstract. Mechanical joints are traditionally analyzed through destructive micrograph analysis, which may compromise internal geometry and morphology, as evidenced by radial cracks in semi-tubular self-pierce riveting. In contrast, industrial X-ray computed tomography (XCT) offers a non-destructive method for component diagnosis, providing volumetric insights without damaging the sample and enabling dimensional measurement. The DFG-funded Collaborative Research Center TRR 285 is exploring XCT's application in assessing mechanical joinability across various joining processes and materials, particularly in multi-material systems like steel-aluminum joints. XCT faces challenges in accurately capturing multi-material compositions, leading to artifacts that complicate interface detection. This research aims to validate XCT for joint investigations, yielding quantitative characteristics that surpass those from traditional micrograph analysis."}],"publication":"Materials Research Proceedings","type":"conference","department":[{"_id":"43"},{"_id":"157"}],"date_created":"2025-06-27T07:56:32Z","status":"public","user_id":"44935","volume":52,"_id":"60439","publisher":"Materials Research Forum LLC","quality_controlled":"1","project":[{"name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130","grant_number":"418701707"},{"_id":"133","name":"TRR 285 - C: TRR 285 - Project Area C"},{"name":"TRR 285 – C01: TRR 285 - Subproject C01","_id":"145"},{"_id":"147","name":"TRR 285 – C03: TRR 285 - Subproject C03"},{"name":"TRR 285 – C02: TRR 285 - Subproject C02","_id":"146"},{"_id":"149","name":"TRR 285 – C05: TRR 285 - Subproject C05"}],"citation":{"short":"M. Lechner, T. Borgert, M. Busch, A. Harms, P.K. Holtkamp, D. Römisch, S. Wituschek, F. Kappe, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","ama":"Lechner M, Borgert T, Busch M, et al. Non-destructive testing in versatile joining processes. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-12\">10.21741/9781644903551-12</a>","chicago":"Lechner, M., Thomas Borgert, Matthias Busch, A. Harms, Pia Katharina Holtkamp, D. Römisch, Simon Wituschek, and Fabian Kappe. “Non-Destructive Testing in Versatile Joining Processes.” In <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-12\">https://doi.org/10.21741/9781644903551-12</a>.","bibtex":"@inproceedings{Lechner_Borgert_Busch_Harms_Holtkamp_Römisch_Wituschek_Kappe_2025, title={Non-destructive testing in versatile joining processes}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-12\">10.21741/9781644903551-12</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Lechner, M. and Borgert, Thomas and Busch, Matthias and Harms, A. and Holtkamp, Pia Katharina and Römisch, D. and Wituschek, Simon and Kappe, Fabian}, year={2025} }","apa":"Lechner, M., Borgert, T., Busch, M., Harms, A., Holtkamp, P. K., Römisch, D., Wituschek, S., &#38; Kappe, F. (2025). Non-destructive testing in versatile joining processes. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-12\">https://doi.org/10.21741/9781644903551-12</a>","mla":"Lechner, M., et al. “Non-Destructive Testing in Versatile Joining Processes.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-12\">10.21741/9781644903551-12</a>.","ieee":"M. Lechner <i>et al.</i>, “Non-destructive testing in versatile joining processes,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-12\">10.21741/9781644903551-12</a>."}},{"citation":{"chicago":"Schultz, Andreas Maximilian. <i>Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr</i>. LibreCat University, 2025. <a href=\"https://doi.org/10.17619/UNIPB/1-2315\">https://doi.org/10.17619/UNIPB/1-2315</a>.","short":"A.M. Schultz, Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr, LibreCat University, 2025.","apa":"Schultz, A. M. (2025). <i>Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr</i>. LibreCat University. <a href=\"https://doi.org/10.17619/UNIPB/1-2315\">https://doi.org/10.17619/UNIPB/1-2315</a>","ieee":"A. M. Schultz, <i>Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr</i>. LibreCat University, 2025.","ama":"Schultz AM. <i>Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr</i>. LibreCat University; 2025. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2315\">10.17619/UNIPB/1-2315</a>","bibtex":"@book{Schultz_2025, title={Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-2315\">10.17619/UNIPB/1-2315</a>}, publisher={LibreCat University}, author={Schultz, Andreas Maximilian}, year={2025} }","mla":"Schultz, Andreas Maximilian. <i>Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr</i>. LibreCat University, 2025, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2315\">10.17619/UNIPB/1-2315</a>."},"supervisor":[{"last_name":"Mozgova","first_name":"Iryna","full_name":"Mozgova, Iryna","id":"95903"},{"full_name":"Lachmayer, Roland","last_name":"Lachmayer","first_name":"Roland"}],"abstract":[{"lang":"eng","text":"Wissensmanagement ist im unternehmerischen Kontext ein etabliertes Feld der Forschung und Praxis, das auf die Verbesserung von Effizienz und Wettbewerbsfähigkeit abzielt. In den Organisationen der zivilen Gefahrenabwehr hingegen gibt es erhebliche Defizite bei der Erfassung und Weitergabe von Wissen, obwohl auch hier große Abhängigkeiten vom Erfahrungswissen bestehen. Diese Arbeit analysiert am Beispiel der Feuerwehr die Gründe für diese Diskrepanz und entwickelt ein Konzept, das das Wissensmanagement im Feuerwehrwesen nachhaltig verankern soll. Eine deutschlandweite Umfrage mit 577 Einsatzkräften ergab, dass eine digitale Verwaltungsunterstützung bereits verbreitet ist, das Wissen jedoch vornehmlich per E-Mail, Chat, mündlich oder per Aushang verteilt wird. Die Teilnehmenden wünschen sich eine Lösung für das Wissensmanagement, die im Einsatz, bei Aus- und Weiterbildung sowie der Verwaltungsarbeit unterstützt. Auf der Umfrage und einer systematischen Literaturrecherche aufbauend, wurde der Handlungsbedarf identifiziert. Darauf basieren die Ableitung der Anwendungsbereiche sowie Rahmenbedingungen, welche sich in den Anforderungen an ein Wissensmanagementsystem widerspiegeln. Das Umsetzungskonzept beschreibt die Systemarchitektur der Lösung, die auf einem open-source Wiki mit passenden Erweiterungen beruht. Zentrales Element ist die Möglichkeit zum Austausch von Wissen über Organisationsgrenzen. Abgeschlossen wird die Arbeit mit der Demonstration und Evaluation der Lösung."},{"lang":"eng","text":"In the corporate context, knowledge management is an established field of research and practice that aims to improve efficiency and competitiveness. In civil emergency response organizations, on the other hand, there are considerable deficits in the acquisition and transfer of knowledge, although there is great dependence on empirical knowledge, too. This paper uses the example of the fire department to analyze the reasons for this discrepancy and develops a concept to anchor knowledge management in the fire department in the long term. A Germany-wide survey of 577 firefighters revealed that digital administrative support is already widespread, but that knowledge is primarily distributed by email, chat, verbally or via paper. The participants seek for a knowledge management solution that provides support during incients, training, as well as administrative work.Based on the survey and a systematic literature review, the need for action was identified. The areas of application and framework conditions, which are reflected in the requirements for a knowledge management system, are based on this. The implementation concept describes the system architecture of the solution, which is based on an open-source wiki with suitable extensions. The central element is the ability to share knowledge across organizational boundaries. The work concludes with a demonstration and evaluation of the solution."}],"date_created":"2025-06-30T09:11:38Z","department":[{"_id":"741"}],"oa":"1","type":"dissertation","author":[{"id":"40599","first_name":"Andreas Maximilian","last_name":"Schultz","full_name":"Schultz, Andreas Maximilian"}],"year":"2025","status":"public","title":"Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr","publication_status":"epub_ahead","date_updated":"2025-06-30T09:15:14Z","_id":"60469","language":[{"iso":"ger"}],"publisher":"LibreCat University","main_file_link":[{"open_access":"1"}],"user_id":"40599","doi":"10.17619/UNIPB/1-2315"},{"citation":{"apa":"Afsahnoudeh, R., Riese, J., &#38; Kenig, E. Y. (2025). Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis. <i>Systems and Control Transactions</i>, <i>4</i>. <a href=\"https://doi.org/10.69997/sct.178665\">https://doi.org/10.69997/sct.178665</a>","ieee":"R. Afsahnoudeh, J. Riese, and E. Y. Kenig, “Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis,” in <i>Systems and Control Transactions</i>, 2025, vol. 4, doi: <a href=\"https://doi.org/10.69997/sct.178665\">10.69997/sct.178665</a>.","short":"R. Afsahnoudeh, J. Riese, E.Y. Kenig, in: Systems and Control Transactions, PSE Press, 2025.","chicago":"Afsahnoudeh, Reza, Julia Riese, and Eugeny Y. Kenig. “Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis.” In <i>Systems and Control Transactions</i>, Vol. 4. PSE Press, 2025. <a href=\"https://doi.org/10.69997/sct.178665\">https://doi.org/10.69997/sct.178665</a>.","mla":"Afsahnoudeh, Reza, et al. “Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis.” <i>Systems and Control Transactions</i>, vol. 4, PSE Press, 2025, doi:<a href=\"https://doi.org/10.69997/sct.178665\">10.69997/sct.178665</a>.","ama":"Afsahnoudeh R, Riese J, Kenig EY. Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis. In: <i>Systems and Control Transactions</i>. Vol 4. PSE Press; 2025. doi:<a href=\"https://doi.org/10.69997/sct.178665\">10.69997/sct.178665</a>","bibtex":"@inproceedings{Afsahnoudeh_Riese_Kenig_2025, title={Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis}, volume={4}, DOI={<a href=\"https://doi.org/10.69997/sct.178665\">10.69997/sct.178665</a>}, booktitle={Systems and Control Transactions}, publisher={PSE Press}, author={Afsahnoudeh, Reza and Riese, Julia and Kenig, Eugeny Y.}, year={2025} }"},"quality_controlled":"1","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"status":"public","_id":"60494","publisher":"PSE Press","user_id":"101499","volume":4,"publication":"Systems and Control Transactions","abstract":[{"text":"Pillow-plate heat exchangers (PPHEs) represent a viable alternative to conventional shell-and-tube and plate heat exchangers. The waviness of their channels intensifies fluid mixing in the boundary layers and facilitates heat transfer. Applying secondary surface structuring can further enhance the overall thermo-hydraulic performance of PPHEs, thus increasing their competitiveness against conventional heat exchangers. In this work, streamlined secondary structures applied on the PPHE surface were studied numerically to explore their potential in enhancing near-wall fluid mixing. Computational fluid dynamics (CFD) simulations of single-phase turbulent flow in the inner PPHE channel were performed and pressure drop, heat transfer coefficients, and overall thermo-hydraulic efficiency were determined. The simulation results clearly demonstrate a favourable influence of secondary structuring on the heat transfer performance of PPHEs.</jats:p>","lang":"eng"}],"date_created":"2025-07-02T07:56:12Z","type":"conference","department":[{"_id":"831"}],"title":"Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis","year":"2025","author":[{"id":"90390","last_name":"Afsahnoudeh","orcid":"https://orcid.org/0009-0001-3161-8036","first_name":"Reza","full_name":"Afsahnoudeh, Reza"},{"id":"101499","last_name":"Riese","first_name":"Julia","orcid":"0000-0002-3053-0534","full_name":"Riese, Julia"},{"full_name":"Kenig, Eugeny Y.","last_name":"Kenig","first_name":"Eugeny Y."}],"publication_identifier":{"issn":["2818-4734"]},"date_updated":"2025-07-02T07:57:08Z","publication_status":"published","intvolume":"         4","language":[{"iso":"eng"}],"doi":"10.69997/sct.178665"},{"language":[{"iso":"eng"}],"doi":"10.69997/sct.196662","author":[{"last_name":"Hochhaus","first_name":"Thorben","full_name":"Hochhaus, Thorben"},{"full_name":"Wloch, Johannes","last_name":"Wloch","first_name":"Johannes"},{"full_name":"Grünewald, Marcus","first_name":"Marcus","last_name":"Grünewald"},{"first_name":"Julia","orcid":"0000-0002-3053-0534","last_name":"Riese","full_name":"Riese, Julia","id":"101499"}],"publication_identifier":{"issn":["2818-4734"]},"title":"A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand","year":"2025","intvolume":"         4","date_updated":"2025-07-02T07:57:22Z","publication_status":"published","date_created":"2025-07-02T07:52:30Z","department":[{"_id":"831"}],"type":"conference","publication":"Systems and Control Transactions","abstract":[{"lang":"eng","text":"Heat pumps play a crucial role in decarbonizing the chemical industry. The integration and sizing of heat pumps in chemical processes is a challenging task in multi-product chemical processes due to the fluctuating waste heat supply and heat demand. Integrating heat pumps may require a retrofit of the utility system. Mathematical optimization is a useful tool to tackle this challenge by enabling the analysis of correlation between relevant system parameters and equipment sizing. This study demonstrates the utilization of mathematical optimization and parameter studies for utility system equipment sizing addressing fluctuating heat supply and demand profiles.</jats:p>"}],"_id":"60493","publisher":"PSE Press","volume":4,"user_id":"101499","status":"public","citation":{"apa":"Hochhaus, T., Wloch, J., Grünewald, M., &#38; Riese, J. (2025). A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand. <i>Systems and Control Transactions</i>, <i>4</i>. <a href=\"https://doi.org/10.69997/sct.196662\">https://doi.org/10.69997/sct.196662</a>","ieee":"T. Hochhaus, J. Wloch, M. Grünewald, and J. Riese, “A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand,” in <i>Systems and Control Transactions</i>, 2025, vol. 4, doi: <a href=\"https://doi.org/10.69997/sct.196662\">10.69997/sct.196662</a>.","chicago":"Hochhaus, Thorben, Johannes Wloch, Marcus Grünewald, and Julia Riese. “A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand.” In <i>Systems and Control Transactions</i>, Vol. 4. PSE Press, 2025. <a href=\"https://doi.org/10.69997/sct.196662\">https://doi.org/10.69997/sct.196662</a>.","short":"T. Hochhaus, J. Wloch, M. Grünewald, J. Riese, in: Systems and Control Transactions, PSE Press, 2025.","mla":"Hochhaus, Thorben, et al. “A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand.” <i>Systems and Control Transactions</i>, vol. 4, PSE Press, 2025, doi:<a href=\"https://doi.org/10.69997/sct.196662\">10.69997/sct.196662</a>.","ama":"Hochhaus T, Wloch J, Grünewald M, Riese J. A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand. In: <i>Systems and Control Transactions</i>. Vol 4. PSE Press; 2025. doi:<a href=\"https://doi.org/10.69997/sct.196662\">10.69997/sct.196662</a>","bibtex":"@inproceedings{Hochhaus_Wloch_Grünewald_Riese_2025, title={A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand}, volume={4}, DOI={<a href=\"https://doi.org/10.69997/sct.196662\">10.69997/sct.196662</a>}, booktitle={Systems and Control Transactions}, publisher={PSE Press}, author={Hochhaus, Thorben and Wloch, Johannes and Grünewald, Marcus and Riese, Julia}, year={2025} }"},"quality_controlled":"1"},{"date_created":"2025-07-08T10:27:46Z","department":[{"_id":"728"}],"type":"journal_article","citation":{"chicago":"Arns, Rahel, Rory McClish, Patrick Hemberger, Andras Bodi, Jordy Bouwman, Tina Kasper, and Domenik Schleier. “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?” <i>Angewandte Chemie International Edition</i>, 2025. <a href=\"https://doi.org/10.1002/anie.202503940\">https://doi.org/10.1002/anie.202503940</a>.","short":"R. Arns, R. McClish, P. Hemberger, A. Bodi, J. Bouwman, T. Kasper, D. Schleier, Angewandte Chemie International Edition (2025).","apa":"Arns, R., McClish, R., Hemberger, P., Bodi, A., Bouwman, J., Kasper, T., &#38; Schleier, D. (2025). Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? <i>Angewandte Chemie International Edition</i>. <a href=\"https://doi.org/10.1002/anie.202503940\">https://doi.org/10.1002/anie.202503940</a>","ieee":"R. Arns <i>et al.</i>, “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?,” <i>Angewandte Chemie International Edition</i>, 2025, doi: <a href=\"https://doi.org/10.1002/anie.202503940\">10.1002/anie.202503940</a>.","ama":"Arns R, McClish R, Hemberger P, et al. Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? <i>Angewandte Chemie International Edition</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1002/anie.202503940\">10.1002/anie.202503940</a>","bibtex":"@article{Arns_McClish_Hemberger_Bodi_Bouwman_Kasper_Schleier_2025, title={Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?}, DOI={<a href=\"https://doi.org/10.1002/anie.202503940\">10.1002/anie.202503940</a>}, journal={Angewandte Chemie International Edition}, publisher={Wiley}, author={Arns, Rahel and McClish, Rory and Hemberger, Patrick and Bodi, Andras and Bouwman, Jordy and Kasper, Tina and Schleier, Domenik}, year={2025} }","mla":"Arns, Rahel, et al. “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?” <i>Angewandte Chemie International Edition</i>, Wiley, 2025, doi:<a href=\"https://doi.org/10.1002/anie.202503940\">10.1002/anie.202503940</a>."},"publication":"Angewandte Chemie International Edition","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>The incorporation of heteroatoms into the framework of polycyclic aromatic hydrocarbons (PAHs), in particular of nitrogen to yield polycyclic aromatic nitrogen heterocycles (PANHs), has been proposed for both astronomical and combustion environments, but no suitable precursors and pathways have been found. Analogous pathways to PAH formation are kinetically or energetically inhibited in the presence of a nitrogen heteroatom. We report on the reaction of phenylnitrene (<jats:sup>3</jats:sup>PhN, <jats:italic>c</jats:italic>‐C<jats:sub>6</jats:sub>H<jats:sub>5</jats:sub>N) with resonance‐stabilized propargyl radicals (C<jats:sub>3</jats:sub>H<jats:sub>3</jats:sub>) and find that the association reaction bifurcates depending on the orientation of the attacking propargyl radical and yields multiple isomeric products. Among them, we identify the condensed‐ring quinoline and conclude that nitrenes are viable candidates to drive the formation of PANHs.</jats:p>"}],"_id":"60552","publisher":"Wiley","language":[{"iso":"eng"}],"user_id":"94562","doi":"10.1002/anie.202503940","publication_identifier":{"issn":["1433-7851","1521-3773"]},"author":[{"last_name":"Arns","first_name":"Rahel","full_name":"Arns, Rahel"},{"last_name":"McClish","first_name":"Rory","full_name":"McClish, Rory"},{"last_name":"Hemberger","first_name":"Patrick","full_name":"Hemberger, Patrick"},{"full_name":"Bodi, Andras","first_name":"Andras","last_name":"Bodi"},{"full_name":"Bouwman, Jordy","first_name":"Jordy","last_name":"Bouwman"},{"id":"94562","last_name":"Kasper","first_name":"Tina","orcid":"0000-0003-3993-5316 ","full_name":"Kasper, Tina"},{"full_name":"Schleier, Domenik","last_name":"Schleier","first_name":"Domenik","id":"98339"}],"status":"public","year":"2025","title":"Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?","article_type":"original","publication_status":"published","date_updated":"2025-07-08T10:39:30Z"},{"citation":{"ama":"Arns R, McClish R, Hemberger P, et al. Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? <i>Angewandte Chemie International Edition</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1002/anie.202503940\">10.1002/anie.202503940</a>","bibtex":"@article{Arns_McClish_Hemberger_Bodi_Bouwman_Kasper_Schleier_2025, title={Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?}, DOI={<a href=\"https://doi.org/10.1002/anie.202503940\">10.1002/anie.202503940</a>}, journal={Angewandte Chemie International Edition}, publisher={Wiley}, author={Arns, Rahel and McClish, Rory and Hemberger, Patrick and Bodi, Andras and Bouwman, Jordy and Kasper, Tina and Schleier, Domenik}, year={2025} }","mla":"Arns, Rahel, et al. “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?” <i>Angewandte Chemie International Edition</i>, Wiley, 2025, doi:<a href=\"https://doi.org/10.1002/anie.202503940\">10.1002/anie.202503940</a>.","chicago":"Arns, Rahel, Rory McClish, Patrick Hemberger, Andras Bodi, Jordy Bouwman, Tina Kasper, and Domenik Schleier. “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?” <i>Angewandte Chemie International Edition</i>, 2025. <a href=\"https://doi.org/10.1002/anie.202503940\">https://doi.org/10.1002/anie.202503940</a>.","short":"R. Arns, R. McClish, P. Hemberger, A. Bodi, J. Bouwman, T. Kasper, D. Schleier, Angewandte Chemie International Edition (2025).","apa":"Arns, R., McClish, R., Hemberger, P., Bodi, A., Bouwman, J., Kasper, T., &#38; Schleier, D. (2025). Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? <i>Angewandte Chemie International Edition</i>. <a href=\"https://doi.org/10.1002/anie.202503940\">https://doi.org/10.1002/anie.202503940</a>","ieee":"R. Arns <i>et al.</i>, “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?,” <i>Angewandte Chemie International Edition</i>, 2025, doi: <a href=\"https://doi.org/10.1002/anie.202503940\">10.1002/anie.202503940</a>."},"publication":"Angewandte Chemie International Edition","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>The incorporation of heteroatoms into the framework of polycyclic aromatic hydrocarbons (PAHs), in particular of nitrogen to yield polycyclic aromatic nitrogen heterocycles (PANHs), has been proposed for both astronomical and combustion environments, but no suitable precursors and pathways have been found. Analogous pathways to PAH formation are kinetically or energetically inhibited in the presence of a nitrogen heteroatom. We report on the reaction of phenylnitrene (<jats:sup>3</jats:sup>PhN, <jats:italic>c</jats:italic>‐C<jats:sub>6</jats:sub>H<jats:sub>5</jats:sub>N) with resonance‐stabilized propargyl radicals (C<jats:sub>3</jats:sub>H<jats:sub>3</jats:sub>) and find that the association reaction bifurcates depending on the orientation of the attacking propargyl radical and yields multiple isomeric products. Among them, we identify the condensed‐ring quinoline and conclude that nitrenes are viable candidates to drive the formation of PANHs.</jats:p>"}],"date_created":"2025-07-08T10:27:37Z","department":[{"_id":"728"}],"type":"journal_article","author":[{"last_name":"Arns","first_name":"Rahel","full_name":"Arns, Rahel"},{"full_name":"McClish, Rory","last_name":"McClish","first_name":"Rory"},{"full_name":"Hemberger, Patrick","first_name":"Patrick","last_name":"Hemberger"},{"last_name":"Bodi","first_name":"Andras","full_name":"Bodi, Andras"},{"first_name":"Jordy","last_name":"Bouwman","full_name":"Bouwman, Jordy"},{"first_name":"Tina","last_name":"Kasper","full_name":"Kasper, Tina"},{"full_name":"Schleier, Domenik","first_name":"Domenik","last_name":"Schleier"}],"publication_identifier":{"issn":["1433-7851","1521-3773"]},"status":"public","year":"2025","title":"Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?","publication_status":"published","date_updated":"2025-07-08T10:34:45Z","_id":"60551","language":[{"iso":"eng"}],"publisher":"Wiley","user_id":"94562","doi":"10.1002/anie.202503940"},{"main_file_link":[{"open_access":"1"}],"language":[{"iso":"eng"}],"doi":"10.1177/13621718251340452","year":"2025","title":"Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components","author":[{"full_name":"Biegler, Max","first_name":"Max","last_name":"Biegler"},{"first_name":"Keke","last_name":"Yang","orcid":"0000-0001-9201-9304","full_name":"Yang, Keke","id":"65085"},{"first_name":"Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson","id":"32056"},{"full_name":"Rethmeier, Michael","last_name":"Rethmeier","first_name":"Michael"}],"publication_identifier":{"issn":["1362-1718","1743-2936"]},"publication_status":"published","date_updated":"2025-07-14T08:38:19Z","article_type":"original","file":[{"content_type":"application/pdf","success":1,"file_id":"60599","date_updated":"2025-07-14T08:37:40Z","relation":"main_file","access_level":"closed","file_size":4534008,"file_name":"KYA_VÖ7.pdf","date_created":"2025-07-14T08:37:40Z","creator":"kekeyang"}],"date_created":"2025-07-12T22:44:20Z","type":"journal_article","department":[{"_id":"157"}],"publication":"Science and Technology of Welding and Joining","abstract":[{"lang":"eng","text":"<jats:p>This study investigates the occurrence and mitigation of liquid metal embrittlement occurring during resistance spot welding in deep-drawn automotive components, specifically focusing on an S-Rail made from advanced high-strength steel. A simulation-based liquid metal embrittlement risk criterion based on local major component stresses was established and used to quantify and compare liquid metal embrittlement risks between different tests. Experimental and numerical analyses were conducted, revealing that springback significantly impacts liquid metal embrittlement formation. Adjustments in electrode geometry and hold time post-welding were found to mitigate liquid metal embrittlement risks. The effects of stack-up configuration and related parameter settings on liquid metal embrittlement occurrence were identified and liquid metal embrittlement was effectively prevented across both stack-up configurations. These findings advance the understanding of liquid metal embrittlement mechanisms and provide practical approaches to enhance the spot weld quality in AHSS-based body-in-whites.</jats:p>"}],"related_material":{"link":[{"relation":"confirmation","url":"10.1177/13621718251340452"}]},"publisher":"SAGE Publications","_id":"60592","user_id":"65085","ddc":["620"],"status":"public","has_accepted_license":"1","oa":"1","file_date_updated":"2025-07-14T08:37:40Z","citation":{"apa":"Biegler, M., Yang, K., Meschut, G., &#38; Rethmeier, M. (2025). Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components. <i>Science and Technology of Welding and Joining</i>. <a href=\"https://doi.org/10.1177/13621718251340452\">https://doi.org/10.1177/13621718251340452</a>","ieee":"M. Biegler, K. Yang, G. Meschut, and M. Rethmeier, “Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components,” <i>Science and Technology of Welding and Joining</i>, 2025, doi: <a href=\"https://doi.org/10.1177/13621718251340452\">10.1177/13621718251340452</a>.","chicago":"Biegler, Max, Keke Yang, Gerson Meschut, and Michael Rethmeier. “Occurrence and Avoidance of Liquid Metal Embrittlement in Resistance Spot Welding of Springback-Afflicted Deep-Drawn Components.” <i>Science and Technology of Welding and Joining</i>, 2025. <a href=\"https://doi.org/10.1177/13621718251340452\">https://doi.org/10.1177/13621718251340452</a>.","short":"M. Biegler, K. Yang, G. Meschut, M. Rethmeier, Science and Technology of Welding and Joining (2025).","mla":"Biegler, Max, et al. “Occurrence and Avoidance of Liquid Metal Embrittlement in Resistance Spot Welding of Springback-Afflicted Deep-Drawn Components.” <i>Science and Technology of Welding and Joining</i>, SAGE Publications, 2025, doi:<a href=\"https://doi.org/10.1177/13621718251340452\">10.1177/13621718251340452</a>.","ama":"Biegler M, Yang K, Meschut G, Rethmeier M. Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components. <i>Science and Technology of Welding and Joining</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1177/13621718251340452\">10.1177/13621718251340452</a>","bibtex":"@article{Biegler_Yang_Meschut_Rethmeier_2025, title={Occurrence and avoidance of liquid metal embrittlement in resistance spot welding of springback-afflicted deep-drawn components}, DOI={<a href=\"https://doi.org/10.1177/13621718251340452\">10.1177/13621718251340452</a>}, journal={Science and Technology of Welding and Joining}, publisher={SAGE Publications}, author={Biegler, Max and Yang, Keke and Meschut, Gerson and Rethmeier, Michael}, year={2025} }"},"quality_controlled":"1"}]