--- _id: '58761' author: - first_name: Christopher full_name: Dechert, Christopher id: '69828' last_name: Dechert - first_name: Julia full_name: Riese, Julia id: '101499' last_name: Riese orcid: 0000-0002-3053-0534 - first_name: Patrick full_name: Franke, Patrick id: '93922' last_name: Franke citation: ama: 'Dechert C, Riese J, Franke P. Untersuchung zur Vergleichbarkeit von verschiedenen Methoden zur Bestimmung der effektiven Phasengrenzflächen. In: ; 2025.' apa: Dechert, C., Riese, J., & Franke, P. (2025). Untersuchung zur Vergleichbarkeit von verschiedenen Methoden zur Bestimmung der effektiven Phasengrenzflächen. Jahrestagung der Fachgruppe FLuidverfahrenstechnik, Bochum. bibtex: '@inproceedings{Dechert_Riese_Franke_2025, title={Untersuchung zur Vergleichbarkeit von verschiedenen Methoden zur Bestimmung der effektiven Phasengrenzflächen}, author={Dechert, Christopher and Riese, Julia and Franke, Patrick}, year={2025} }' chicago: Dechert, Christopher, Julia Riese, and Patrick Franke. “Untersuchung Zur Vergleichbarkeit von Verschiedenen Methoden Zur Bestimmung Der Effektiven Phasengrenzflächen,” 2025. ieee: C. Dechert, J. Riese, and P. Franke, “Untersuchung zur Vergleichbarkeit von verschiedenen Methoden zur Bestimmung der effektiven Phasengrenzflächen,” presented at the Jahrestagung der Fachgruppe FLuidverfahrenstechnik, Bochum, 2025. mla: Dechert, Christopher, et al. Untersuchung Zur Vergleichbarkeit von Verschiedenen Methoden Zur Bestimmung Der Effektiven Phasengrenzflächen. 2025. short: 'C. Dechert, J. Riese, P. Franke, in: 2025.' conference: end_date: 2025-02-05 location: Bochum name: Jahrestagung der Fachgruppe FLuidverfahrenstechnik start_date: 2025-02-03 date_created: 2025-02-21T12:36:20Z date_updated: 2025-02-21T12:38:25Z department: - _id: '831' extern: '1' language: - iso: eng project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' status: public title: Untersuchung zur Vergleichbarkeit von verschiedenen Methoden zur Bestimmung der effektiven Phasengrenzflächen type: conference_abstract user_id: '69828' year: '2025' ... --- _id: '58762' author: - first_name: Christopher full_name: Dechert, Christopher id: '69828' last_name: Dechert - first_name: Julia full_name: Riese, Julia id: '101499' last_name: Riese orcid: 0000-0002-3053-0534 citation: ama: 'Dechert C, Riese J. Bewertung des Potentiales der Elektrobenetzung für Trennkolonnen. In: ; 2025.' apa: Dechert, C., & Riese, J. (2025). Bewertung des Potentiales der Elektrobenetzung für Trennkolonnen. Jahrestreffen der Fachgruppe Fluidverfahrenstechnik, Bochum. bibtex: '@inproceedings{Dechert_Riese_2025, title={Bewertung des Potentiales der Elektrobenetzung für Trennkolonnen}, author={Dechert, Christopher and Riese, Julia}, year={2025} }' chicago: Dechert, Christopher, and Julia Riese. “Bewertung Des Potentiales Der Elektrobenetzung Für Trennkolonnen,” 2025. ieee: C. Dechert and J. Riese, “Bewertung des Potentiales der Elektrobenetzung für Trennkolonnen,” presented at the Jahrestreffen der Fachgruppe Fluidverfahrenstechnik, Bochum, 2025. mla: Dechert, Christopher, and Julia Riese. Bewertung Des Potentiales Der Elektrobenetzung Für Trennkolonnen. 2025. short: 'C. Dechert, J. Riese, in: 2025.' conference: end_date: 2025-02-05 location: Bochum name: Jahrestreffen der Fachgruppe Fluidverfahrenstechnik start_date: 2025-02-03 date_created: 2025-02-21T12:38:03Z date_updated: 2025-02-21T12:38:28Z department: - _id: '831' language: - iso: eng status: public title: Bewertung des Potentiales der Elektrobenetzung für Trennkolonnen type: conference_abstract user_id: '69828' year: '2025' ... --- _id: '58535' author: - first_name: Keke full_name: Yang, Keke id: '65085' last_name: Yang orcid: 0000-0001-9201-9304 - first_name: Zhuoqun full_name: Wang, Zhuoqun last_name: Wang - first_name: Viktor full_name: Haak, Viktor id: '60398' last_name: Haak - first_name: Viktoria full_name: Olfert, Viktoria id: '5974' last_name: Olfert - first_name: Bassel full_name: El-Sari, Bassel last_name: El-Sari - first_name: David full_name: Hein, David id: '7728' last_name: Hein - first_name: Max full_name: Biegler, Max last_name: Biegler - first_name: Michael full_name: Rethmeier, Michael last_name: Rethmeier - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Yang K, Wang Z, Haak V, et al. A novel welding schedule for expanding the expulsion-free process window in resistance spot welding of dissimilar joints with ultra-high strength steel. Journal of Manufacturing Processes. 2025;137:306-319. doi:10.1016/j.jmapro.2025.02.009 apa: Yang, K., Wang, Z., Haak, V., Olfert, V., El-Sari, B., Hein, D., Biegler, M., Rethmeier, M., & Meschut, G. (2025). A novel welding schedule for expanding the expulsion-free process window in resistance spot welding of dissimilar joints with ultra-high strength steel. Journal of Manufacturing Processes, 137, 306–319. https://doi.org/10.1016/j.jmapro.2025.02.009 bibtex: '@article{Yang_Wang_Haak_Olfert_El-Sari_Hein_Biegler_Rethmeier_Meschut_2025, title={A novel welding schedule for expanding the expulsion-free process window in resistance spot welding of dissimilar joints with ultra-high strength steel}, volume={137}, DOI={10.1016/j.jmapro.2025.02.009}, journal={Journal of Manufacturing Processes}, publisher={Elsevier BV}, author={Yang, Keke and Wang, Zhuoqun and Haak, Viktor and Olfert, Viktoria and El-Sari, Bassel and Hein, David and Biegler, Max and Rethmeier, Michael and Meschut, Gerson}, year={2025}, pages={306–319} }' chicago: 'Yang, Keke, Zhuoqun Wang, Viktor Haak, Viktoria Olfert, Bassel El-Sari, David Hein, Max Biegler, Michael Rethmeier, and Gerson Meschut. “A Novel Welding Schedule for Expanding the Expulsion-Free Process Window in Resistance Spot Welding of Dissimilar Joints with Ultra-High Strength Steel.” Journal of Manufacturing Processes 137 (2025): 306–19. https://doi.org/10.1016/j.jmapro.2025.02.009.' ieee: 'K. Yang et al., “A novel welding schedule for expanding the expulsion-free process window in resistance spot welding of dissimilar joints with ultra-high strength steel,” Journal of Manufacturing Processes, vol. 137, pp. 306–319, 2025, doi: 10.1016/j.jmapro.2025.02.009.' mla: Yang, Keke, et al. “A Novel Welding Schedule for Expanding the Expulsion-Free Process Window in Resistance Spot Welding of Dissimilar Joints with Ultra-High Strength Steel.” Journal of Manufacturing Processes, vol. 137, Elsevier BV, 2025, pp. 306–19, doi:10.1016/j.jmapro.2025.02.009. short: K. Yang, Z. Wang, V. Haak, V. Olfert, B. El-Sari, D. Hein, M. Biegler, M. Rethmeier, G. Meschut, Journal of Manufacturing Processes 137 (2025) 306–319. date_created: 2025-02-07T10:08:08Z date_updated: 2025-02-24T07:30:23Z ddc: - '670' department: - _id: '157' doi: 10.1016/j.jmapro.2025.02.009 file: - access_level: closed content_type: application/pdf creator: kekeyang date_created: 2025-02-07T10:09:17Z date_updated: 2025-02-07T10:09:17Z file_id: '58536' file_name: KYA_VÖ6.pdf file_size: 3747516 relation: main_file success: 1 file_date_updated: 2025-02-07T10:09:17Z has_accepted_license: '1' intvolume: ' 137' language: - iso: eng main_file_link: - open_access: '1' oa: '1' page: 306-319 publication: Journal of Manufacturing Processes publication_identifier: issn: - 1526-6125 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: A novel welding schedule for expanding the expulsion-free process window in resistance spot welding of dissimilar joints with ultra-high strength steel type: journal_article user_id: '65085' volume: 137 year: '2025' ... --- _id: '58556' abstract: - lang: eng text: 'To predict and prevent uneven tire wear in addition to a reduction of overall tire wear, it is essential to estimate not only the total amount of wear but also how the wear is distributed across the tire width. This requires knowledge of the frictional power distribution in the tire contact patch, which is the basis for calculating tire wear using a wear law. Usually, only 3D structural tire models can generate such distributed contact results. However, they involve high computational costs and cannot be used for comprehensive optimization of a vehicle’s suspension system with respect to tire wear characteristics. Hence, this contribution presents a methodology on how to accelerate the prediction of the frictional power distribution using two components: The structural tire model is replaced by an empirical tire model that on its own is not able to generate distributed contact results. Therefore, an artificial neural network is trained to predict the desired contact results from the kinematic quantities calculated by the empirical tire model. In the initial training phase, both components are fitted to data generated by the original complex tire model. After training, the empirical tire model can replace the structural tire model in vehicle simulations, resulting in significantly shorter calculation times. The simulation results are fed into the artificial neural network, which predicts the frictional power distributions over the tire width with negligible additional effort. Overall, the methodology reduces calculation time for the prediction of tire wear based on virtual test drives to approximately 25% of the time needed when using structural tire models.' article_type: original author: - first_name: Lars full_name: Muth, Lars id: '77313' last_name: Muth orcid: 0000-0002-2938-5616 - first_name: Raphael full_name: Zharia, Raphael last_name: Zharia - first_name: Hürkan full_name: Sahin, Hürkan last_name: Sahin - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: Muth L, Zharia R, Sahin H, Sextro W. Prediction of the Frictional Power Distribution in the Tire Contact Patch Based on an Empirical Tire Model and an Artificial Neural Network. Tire Science and Technology. Published online 2025. doi:https://doi.org/10.2346/TST-24-009 apa: Muth, L., Zharia, R., Sahin, H., & Sextro, W. (2025). Prediction of the Frictional Power Distribution in the Tire Contact Patch Based on an Empirical Tire Model and an Artificial Neural Network. Tire Science and Technology. https://doi.org/10.2346/TST-24-009 bibtex: '@article{Muth_Zharia_Sahin_Sextro_2025, title={Prediction of the Frictional Power Distribution in the Tire Contact Patch Based on an Empirical Tire Model and an Artificial Neural Network}, DOI={https://doi.org/10.2346/TST-24-009}, journal={Tire Science and Technology}, publisher={The Tire Society}, author={Muth, Lars and Zharia, Raphael and Sahin, Hürkan and Sextro, Walter}, year={2025} }' chicago: Muth, Lars, Raphael Zharia, Hürkan Sahin, and Walter Sextro. “Prediction of the Frictional Power Distribution in the Tire Contact Patch Based on an Empirical Tire Model and an Artificial Neural Network.” Tire Science and Technology, 2025. https://doi.org/10.2346/TST-24-009. ieee: 'L. Muth, R. Zharia, H. Sahin, and W. Sextro, “Prediction of the Frictional Power Distribution in the Tire Contact Patch Based on an Empirical Tire Model and an Artificial Neural Network,” Tire Science and Technology, 2025, doi: https://doi.org/10.2346/TST-24-009.' mla: Muth, Lars, et al. “Prediction of the Frictional Power Distribution in the Tire Contact Patch Based on an Empirical Tire Model and an Artificial Neural Network.” Tire Science and Technology, The Tire Society, 2025, doi:https://doi.org/10.2346/TST-24-009. short: L. Muth, R. Zharia, H. Sahin, W. Sextro, Tire Science and Technology (2025). date_created: 2025-02-10T19:54:28Z date_updated: 2025-02-27T19:53:09Z department: - _id: '151' - _id: '9' doi: https://doi.org/10.2346/TST-24-009 extern: '1' language: - iso: eng publication: Tire Science and Technology publication_status: epub_ahead publisher: The Tire Society quality_controlled: '1' status: public title: Prediction of the Frictional Power Distribution in the Tire Contact Patch Based on an Empirical Tire Model and an Artificial Neural Network type: journal_article user_id: '77313' year: '2025' ... --- _id: '58165' article_number: '131436' author: - first_name: Maximilian full_name: Neumann, Maximilian last_name: Neumann - first_name: Marc full_name: Xia, Marc last_name: Xia - first_name: René full_name: Pöschmann, René last_name: Pöschmann - first_name: Amelie full_name: Merkel, Amelie last_name: Merkel - first_name: Rolf full_name: Staud, Rolf last_name: Staud - first_name: Hannes full_name: Schneider, Hannes last_name: Schneider - first_name: Thomas full_name: Ehlert, Thomas id: '47151' last_name: Ehlert - first_name: Jürgen full_name: Paschold, Jürgen last_name: Paschold - first_name: Steffen full_name: Müller, Steffen last_name: Müller - first_name: Laura-Selin full_name: Harding, Laura-Selin last_name: Harding - first_name: Johannes full_name: Neukäufer, Johannes last_name: Neukäufer - first_name: Christoph full_name: Hiller, Christoph last_name: Hiller - first_name: Ilja full_name: Ausner, Ilja last_name: Ausner - first_name: Ansor full_name: Gäbler, Ansor last_name: Gäbler - first_name: Reiner full_name: Chromik, Reiner last_name: Chromik - first_name: Jan full_name: Maćkowiak, Jan last_name: Maćkowiak - first_name: Jerzy full_name: Maćkowiak, Jerzy last_name: Maćkowiak - first_name: Jose Luis full_name: Sola Cervera, Jose Luis last_name: Sola Cervera - first_name: Christian full_name: Geipel, Christian last_name: Geipel - first_name: Jost full_name: Brinkmann, Jost last_name: Brinkmann - first_name: Jürgen full_name: Bausa, Jürgen last_name: Bausa - first_name: Sebastian full_name: Zeck, Sebastian last_name: Zeck - first_name: Mark full_name: Hapke, Mark last_name: Hapke - first_name: Florian full_name: Forner, Florian last_name: Forner - first_name: Florian full_name: Habla, Florian last_name: Habla - first_name: Manuel full_name: Knaup, Manuel last_name: Knaup - first_name: Robin full_name: Schulz, Robin last_name: Schulz - first_name: Michael full_name: Schultes, Michael last_name: Schultes - first_name: Thomas full_name: Harlacher, Thomas last_name: Harlacher - first_name: Nicole full_name: Lutters, Nicole id: '22006' last_name: Lutters orcid: 0009-0006-7828-8448 - first_name: Eugeny full_name: Kenig, Eugeny id: '665' last_name: Kenig - first_name: Katharina full_name: Jasch, Katharina last_name: Jasch - first_name: Mandy full_name: Paschetag, Mandy last_name: Paschetag - first_name: Stephan full_name: Scholl, Stephan last_name: Scholl - first_name: Marcus full_name: Grünewald, Marcus last_name: Grünewald - first_name: Georg full_name: Brösigke, Georg last_name: Brösigke - first_name: Jens-Uwe full_name: Repke, Jens-Uwe last_name: Repke - first_name: Harald full_name: Klein, Harald last_name: Klein - first_name: Sebastian full_name: Rehfeldt, Sebastian last_name: Rehfeldt citation: ama: 'Neumann M, Xia M, Pöschmann R, et al. Towards reliable HETP values: Lessons learned from standardized separation efficiency measurements. Separation and Purification Technology. 2025;361. doi:10.1016/j.seppur.2025.131436' apa: 'Neumann, M., Xia, M., Pöschmann, R., Merkel, A., Staud, R., Schneider, H., Ehlert, T., Paschold, J., Müller, S., Harding, L.-S., Neukäufer, J., Hiller, C., Ausner, I., Gäbler, A., Chromik, R., Maćkowiak, J., Maćkowiak, J., Sola Cervera, J. L., Geipel, C., … Rehfeldt, S. (2025). Towards reliable HETP values: Lessons learned from standardized separation efficiency measurements. Separation and Purification Technology, 361, Article 131436. https://doi.org/10.1016/j.seppur.2025.131436' bibtex: '@article{Neumann_Xia_Pöschmann_Merkel_Staud_Schneider_Ehlert_Paschold_Müller_Harding_et al._2025, title={Towards reliable HETP values: Lessons learned from standardized separation efficiency measurements}, volume={361}, DOI={10.1016/j.seppur.2025.131436}, number={131436}, journal={Separation and Purification Technology}, publisher={Elsevier BV}, author={Neumann, Maximilian and Xia, Marc and Pöschmann, René and Merkel, Amelie and Staud, Rolf and Schneider, Hannes and Ehlert, Thomas and Paschold, Jürgen and Müller, Steffen and Harding, Laura-Selin and et al.}, year={2025} }' chicago: 'Neumann, Maximilian, Marc Xia, René Pöschmann, Amelie Merkel, Rolf Staud, Hannes Schneider, Thomas Ehlert, et al. “Towards Reliable HETP Values: Lessons Learned from Standardized Separation Efficiency Measurements.” Separation and Purification Technology 361 (2025). https://doi.org/10.1016/j.seppur.2025.131436.' ieee: 'M. Neumann et al., “Towards reliable HETP values: Lessons learned from standardized separation efficiency measurements,” Separation and Purification Technology, vol. 361, Art. no. 131436, 2025, doi: 10.1016/j.seppur.2025.131436.' mla: 'Neumann, Maximilian, et al. “Towards Reliable HETP Values: Lessons Learned from Standardized Separation Efficiency Measurements.” Separation and Purification Technology, vol. 361, 131436, Elsevier BV, 2025, doi:10.1016/j.seppur.2025.131436.' short: M. Neumann, M. Xia, R. Pöschmann, A. Merkel, R. Staud, H. Schneider, T. Ehlert, J. Paschold, S. Müller, L.-S. Harding, J. Neukäufer, C. Hiller, I. Ausner, A. Gäbler, R. Chromik, J. Maćkowiak, J. Maćkowiak, J.L. Sola Cervera, C. Geipel, J. Brinkmann, J. Bausa, S. Zeck, M. Hapke, F. Forner, F. Habla, M. Knaup, R. Schulz, M. Schultes, T. Harlacher, N. Lutters, E. Kenig, K. Jasch, M. Paschetag, S. Scholl, M. Grünewald, G. Brösigke, J.-U. Repke, H. Klein, S. Rehfeldt, Separation and Purification Technology 361 (2025). date_created: 2025-01-13T11:35:51Z date_updated: 2025-02-28T07:57:11Z department: - _id: '9' - _id: '145' - _id: '831' doi: 10.1016/j.seppur.2025.131436 intvolume: ' 361' language: - iso: eng publication: Separation and Purification Technology publication_identifier: issn: - 1383-5866 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: 'Towards reliable HETP values: Lessons learned from standardized separation efficiency measurements' type: journal_article user_id: '22006' volume: 361 year: '2025' ... --- _id: '58950' author: - first_name: Marcel Patrick Klaus full_name: Braun, Marcel Patrick Klaus id: '84156' last_name: Braun - first_name: Olexandr full_name: Grydin, Olexandr last_name: Grydin - first_name: Kay-Peter full_name: Hoyer, Kay-Peter id: '48411' last_name: Hoyer - first_name: Mirko full_name: Schaper, Mirko id: '43720' last_name: Schaper citation: ama: 'Braun MPK, Grydin O, Hoyer K-P, Schaper M. Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System. In: The Minerals, Metals & Materials Series. Springer Nature Switzerland; 2025. doi:10.1007/978-3-031-81061-9_12' apa: Braun, M. P. K., Grydin, O., Hoyer, K.-P., & Schaper, M. (2025). Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System. In The Minerals, Metals & Materials Series. TMS 2025. The Minerals, Metals & Materials, LAs Vegas, USA. Springer Nature Switzerland. https://doi.org/10.1007/978-3-031-81061-9_12 bibtex: '@inbook{Braun_Grydin_Hoyer_Schaper_2025, place={Cham}, title={Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System}, DOI={10.1007/978-3-031-81061-9_12}, booktitle={The Minerals, Metals & Materials Series}, publisher={Springer Nature Switzerland}, author={Braun, Marcel Patrick Klaus and Grydin, Olexandr and Hoyer, Kay-Peter and Schaper, Mirko}, year={2025} }' chicago: 'Braun, Marcel Patrick Klaus, Olexandr Grydin, Kay-Peter Hoyer, and Mirko Schaper. “Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System.” In The Minerals, Metals & Materials Series. Cham: Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-81061-9_12.' ieee: 'M. P. K. Braun, O. Grydin, K.-P. Hoyer, and M. Schaper, “Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System,” in The Minerals, Metals & Materials Series, Cham: Springer Nature Switzerland, 2025.' mla: Braun, Marcel Patrick Klaus, et al. “Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System.” The Minerals, Metals & Materials Series, Springer Nature Switzerland, 2025, doi:10.1007/978-3-031-81061-9_12. short: 'M.P.K. Braun, O. Grydin, K.-P. Hoyer, M. Schaper, in: The Minerals, Metals & Materials Series, Springer Nature Switzerland, Cham, 2025.' conference: end_date: 2025-03-27 location: LAs Vegas, USA name: TMS 2025. The Minerals, Metals & Materials start_date: 2025-03-23 date_created: 2025-03-10T15:25:17Z date_updated: 2025-03-10T15:27:29Z department: - _id: '9' - _id: '158' doi: 10.1007/978-3-031-81061-9_12 language: - iso: eng place: Cham publication: The Minerals, Metals & Materials Series publication_identifier: isbn: - '9783031810602' - '9783031810619' issn: - 2367-1181 - 2367-1696 publication_status: published publisher: Springer Nature Switzerland quality_controlled: '1' status: public title: Precipitation Hardening in the Magnesium–Zinc–Calcium Alloy System type: book_chapter user_id: '48411' year: '2025' ... --- _id: '58971' abstract: - lang: ger text: Ein wichtiger Bestandteil jeder Fahrzeugkarosserie sind Massebolzen, die zur Herstellung der elektrischen Schnittstelle zwischen der leitfähigen Karosserie und dem Bordnetz dienen. Eine zuverlässige Signal- und Leistungsübertragung erfor-dert minimale Übergangswiderstände an den elektrischen Anschlusspunkten des Massebolzensystems und muss ver-schiedenen Betriebs- und Umweltbedingungen über die gesamte Lebensdauer standhalten. Der Übergangswiderstand wird von mehreren Faktoren beeinflusst (z. B. Verbindungsgeometrie, Kontaktkraft, Temperatur, Werkstoff) und erhöht sich im Laufe der Betriebszeit infolge unterschiedlicher Alterungsmechanismen. Dieser Beitrag befasst sich mit der elektrischen Charakterisierung von Massebolzen aus AlMg5 mit einer ZnNi-beschichteten Stahl-Hutmutter auf einem AlMg3-Blech. Es werden ausgewählte fertigungs-, montage- und betriebsbedingte Einflussgrößen auf den elektrischen Verbindungs-widerstand analysiert. Als wirtschaftliche und etablierte Fügetechnologie kommt das Lichtbogenbolzenschweißen mit Hubzündung zum Einsatz. Zur Herstellung qualitativ hochwertiger Schweißverbindungen wird mittels einer statistischen Versuchsplanung ein geeigneter Referenzparametersatz ermittelt. Weiterhin wird der montagebedingte Einfluss anhand des Mutter-Anziehmoments bei der Kabelschuhmontage auf den elektrischen Verbindungswiderstand untersucht. Zusätzlich werden die Strombelastbarkeit und der maximal zulässige Betriebsbereich des Massebolzensystems ermittelt. article_type: original author: - first_name: Viktor full_name: Haak, Viktor id: '60398' last_name: Haak - first_name: Keke full_name: Yang, Keke id: '65085' last_name: Yang orcid: 0000-0001-9201-9304 - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Haak V, Yang K, Meschut G. Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen. Schweißen und Schneiden. 2025;3. doi:10.53192/SUS20250336 apa: Haak, V., Yang, K., & Meschut, G. (2025). Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen. Schweißen und Schneiden, 3. https://doi.org/10.53192/SUS20250336 bibtex: '@article{Haak_Yang_Meschut_2025, title={Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen}, volume={3}, DOI={10.53192/SUS20250336}, journal={Schweißen und Schneiden}, publisher={DVS-Media}, author={Haak, Viktor and Yang, Keke and Meschut, Gerson}, year={2025} }' chicago: Haak, Viktor, Keke Yang, and Gerson Meschut. “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen.” Schweißen und Schneiden 3 (2025). https://doi.org/10.53192/SUS20250336. ieee: 'V. Haak, K. Yang, and G. Meschut, “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen,” Schweißen und Schneiden, vol. 3, 2025, doi: 10.53192/SUS20250336.' mla: Haak, Viktor, et al. “Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen.” Schweißen und Schneiden, vol. 3, DVS-Media, 2025, doi:10.53192/SUS20250336. short: V. Haak, K. Yang, G. Meschut, Schweißen und Schneiden 3 (2025). date_created: 2025-03-12T09:41:06Z date_updated: 2025-03-12T09:41:39Z department: - _id: '157' doi: 10.53192/SUS20250336 intvolume: ' 3' language: - iso: ger main_file_link: - url: https://www.schweissenundschneiden.de/artikel/einfluss-von-schweissparametern-und-montageverfahren-auf-die-elektrische-kontaktguete-von-aluminium-massebolzen publication: Schweißen und Schneiden publication_status: published publisher: DVS-Media quality_controlled: '1' status: public title: Einfluss von Schweißparametern und Montageverfahren auf die elektrische Kontaktgüte von Aluminium-Massebolzen type: journal_article user_id: '65085' volume: 3 year: '2025' ... --- _id: '59154' abstract: - lang: eng text: 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. author: - first_name: Moritz full_name: Neuser, Moritz id: '32340' last_name: Neuser - first_name: Kay-Peter full_name: Hoyer, Kay-Peter id: '48411' last_name: Hoyer - first_name: Mirko full_name: Schaper, Mirko id: '43720' last_name: Schaper citation: ama: 'Neuser M, Hoyer K-P, Schaper M. Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells. In: Materials Research Proceedings. Vol 52. Materials Research Forum LLC; 2025. doi:10.21741/9781644903551-26' apa: Neuser, M., Hoyer, K.-P., & Schaper, M. (2025). Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-26 bibtex: '@inproceedings{Neuser_Hoyer_Schaper_2025, title={Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells}, volume={52}, DOI={10.21741/9781644903551-26}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Neuser, Moritz and Hoyer, Kay-Peter and Schaper, Mirko}, year={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 Materials Research Proceedings, Vol. 52. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-26. ieee: 'M. Neuser, K.-P. Hoyer, and M. Schaper, “Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells,” in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-26.' mla: Neuser, Moritz, et al. “Processing of the Hypoeutectic AlSi9 Alloy with Twin-Roll Casting by Using Copper Shells.” Materials Research Proceedings, vol. 52, Materials Research Forum LLC, 2025, doi:10.21741/9781644903551-26. short: 'M. Neuser, K.-P. Hoyer, M. Schaper, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2025-03-26T15:15:15Z date_updated: 2025-03-26T15:17:46Z department: - _id: '9' - _id: '158' doi: 10.21741/9781644903551-26 intvolume: ' 52' language: - iso: eng publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells type: conference user_id: '48411' volume: 52 year: '2025' ... --- _id: '59155' abstract: - lang: eng text: 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. author: - first_name: Martin full_name: Lauth, Martin id: '13858' last_name: Lauth - first_name: Kay-Peter full_name: Hoyer, Kay-Peter id: '48411' last_name: Hoyer - first_name: Mirko full_name: Schaper, Mirko id: '43720' last_name: Schaper - first_name: Winfried full_name: Gräfen, Winfried last_name: Gräfen citation: ama: 'Lauth M, Hoyer K-P, Schaper M, Gräfen W. Cost-effective repair solution for twin-roll-caster rollers. In: Materials Research Proceedings. Vol 52. Materials Research Forum LLC; 2025. doi:10.21741/9781644903551-5' apa: Lauth, M., Hoyer, K.-P., Schaper, M., & Gräfen, W. (2025). Cost-effective repair solution for twin-roll-caster rollers. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-5 bibtex: '@inproceedings{Lauth_Hoyer_Schaper_Gräfen_2025, title={Cost-effective repair solution for twin-roll-caster rollers}, volume={52}, DOI={10.21741/9781644903551-5}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Lauth, Martin and Hoyer, Kay-Peter and Schaper, Mirko and Gräfen, Winfried}, year={2025} }' chicago: Lauth, Martin, Kay-Peter Hoyer, Mirko Schaper, and Winfried Gräfen. “Cost-Effective Repair Solution for Twin-Roll-Caster Rollers.” In Materials Research Proceedings, Vol. 52. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-5. ieee: 'M. Lauth, K.-P. Hoyer, M. Schaper, and W. Gräfen, “Cost-effective repair solution for twin-roll-caster rollers,” in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-5.' mla: Lauth, Martin, et al. “Cost-Effective Repair Solution for Twin-Roll-Caster Rollers.” Materials Research Proceedings, vol. 52, Materials Research Forum LLC, 2025, doi:10.21741/9781644903551-5. short: 'M. Lauth, K.-P. Hoyer, M. Schaper, W. Gräfen, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2025-03-26T15:16:31Z date_updated: 2025-03-26T15:17:51Z department: - _id: '9' - _id: '158' doi: 10.21741/9781644903551-5 intvolume: ' 52' language: - iso: eng publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Cost-effective repair solution for twin-roll-caster rollers type: conference user_id: '48411' volume: 52 year: '2025' ... --- _id: '59130' author: - first_name: Dennis full_name: Kleinschmidt, Dennis id: '40516' last_name: Kleinschmidt - first_name: Florian full_name: Brüning, Florian id: '72920' last_name: Brüning citation: ama: Kleinschmidt D, Brüning F. Influence of pre-shearing on the rheological properties of filled rubber compounds. KGK Kautschuk Gummi Kunststoffe. Published online 2025. apa: Kleinschmidt, D., & Brüning, F. (2025). Influence of pre-shearing on the rheological properties of filled rubber compounds. KGK Kautschuk Gummi Kunststoffe. 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} }' chicago: Kleinschmidt, Dennis, and Florian Brüning. “Influence of Pre-Shearing on the Rheological Properties of Filled Rubber Compounds.” KGK Kautschuk Gummi Kunststoffe, 2025. ieee: D. Kleinschmidt and F. Brüning, “Influence of pre-shearing on the rheological properties of filled rubber compounds,” KGK Kautschuk Gummi Kunststoffe, 2025. mla: Kleinschmidt, Dennis, and Florian Brüning. “Influence of Pre-Shearing on the Rheological Properties of Filled Rubber Compounds.” KGK Kautschuk Gummi Kunststoffe, 2025. short: D. Kleinschmidt, F. Brüning, KGK Kautschuk Gummi Kunststoffe (2025). date_created: 2025-03-25T09:55:44Z date_updated: 2025-03-27T14:13:53Z department: - _id: '9' - _id: '321' - _id: '367' keyword: - Rheologie - Viskosität - Wandgleiten language: - iso: eng publication: KGK Kautschuk Gummi Kunststoffe quality_controlled: '1' status: public title: Influence of pre-shearing on the rheological properties of filled rubber compounds type: journal_article user_id: '59363' year: '2025' ... --- _id: '59239' abstract: - lang: ger 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: 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. author: - first_name: Matti full_name: Grabo, Matti id: '66520' last_name: Grabo citation: ama: Grabo M. Modeling and Optimization of Energy System Components Equipped with Phase Change Materials.; 2025. doi:10.17619/UNIPB/1-2199 apa: Grabo, M. (2025). Modeling and optimization of energy system components equipped with phase change materials. https://doi.org/10.17619/UNIPB/1-2199 bibtex: '@book{Grabo_2025, place={Paderborn}, title={Modeling and optimization of energy system components equipped with phase change materials}, DOI={10.17619/UNIPB/1-2199}, author={Grabo, Matti}, year={2025} }' chicago: Grabo, Matti. Modeling and Optimization of Energy System Components Equipped with Phase Change Materials. Paderborn, 2025. https://doi.org/10.17619/UNIPB/1-2199. ieee: M. Grabo, Modeling and optimization of energy system components equipped with phase change materials. Paderborn, 2025. mla: Grabo, Matti. Modeling and Optimization of Energy System Components Equipped with Phase Change Materials. 2025, doi:10.17619/UNIPB/1-2199. short: M. Grabo, Modeling and Optimization of Energy System Components Equipped with Phase Change Materials, Paderborn, 2025. date_created: 2025-04-02T09:25:58Z date_updated: 2025-04-02T09:44:05Z department: - _id: '9' doi: 10.17619/UNIPB/1-2199 keyword: - Heat transfer - PCM - numerical simulation - renewable energy - heat storage language: - iso: eng place: Paderborn publication_status: published status: public supervisor: - first_name: Eugeny full_name: Kenig, Eugeny id: '665' last_name: Kenig title: Modeling and optimization of energy system components equipped with phase change materials type: dissertation user_id: '66520' year: '2025' ... --- _id: '60286' author: - first_name: Laura full_name: Austermeier, Laura id: '45326' last_name: Austermeier citation: ama: Austermeier L. Vorhersagemodell Zum Ortsaufgelösten Energieeintrag in Dichtkämmenden Gleichdrall-Doppelschneckenextrudern.; 2025. apa: Austermeier, L. (2025). Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern. bibtex: '@book{Austermeier_2025, title={Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern}, author={Austermeier, Laura}, year={2025} }' chicago: Austermeier, Laura. Vorhersagemodell Zum Ortsaufgelösten Energieeintrag in Dichtkämmenden Gleichdrall-Doppelschneckenextrudern, 2025. ieee: L. Austermeier, Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern. 2025. mla: Austermeier, Laura. Vorhersagemodell Zum Ortsaufgelösten Energieeintrag in Dichtkämmenden Gleichdrall-Doppelschneckenextrudern. 2025. short: L. Austermeier, Vorhersagemodell Zum Ortsaufgelösten Energieeintrag in Dichtkämmenden Gleichdrall-Doppelschneckenextrudern, 2025. date_created: 2025-06-20T07:03:49Z date_updated: 2025-06-20T07:04:08Z department: - _id: '9' - _id: '321' - _id: '367' language: - iso: eng status: public title: Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern type: dissertation user_id: '59363' year: '2025' ... --- _id: '60287' author: - first_name: Maximilian full_name: Scholle, Maximilian id: '35736' last_name: Scholle citation: ama: Scholle M. Die Verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds.; 2025. apa: Scholle, M. (2025). Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds. bibtex: '@book{Scholle_2025, title={Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds}, author={Scholle, Maximilian}, year={2025} }' chicago: Scholle, Maximilian. Die Verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds, 2025. ieee: M. Scholle, Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds. 2025. mla: Scholle, Maximilian. Die Verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds. 2025. short: M. Scholle, Die Verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds, 2025. date_created: 2025-06-20T07:06:25Z date_updated: 2025-06-20T07:06:29Z department: - _id: '9' - _id: '321' - _id: '367' extern: '1' language: - iso: eng status: public title: Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds type: dissertation user_id: '59363' year: '2025' ... --- _id: '60441' abstract: - lang: eng text: Conventional mechanical joining processes are typically rigid in their tool systems and can only react to changing process and disturbance variables to a limited extent. At the same time, various industries are increasingly trending towards multi-material systems consisting of parts with varying geometric and mechanical properties. Due to the varying properties, rigid mechanical joining processes require sampling procedures and periodic changes of tool components or auxiliary joining parts. Consequently, research is focusing on versatile mechanical joining processes that allow increased control by modifying the process parameters. Two processes based on self-piercing riveting can achieve a significant increase in process influence possibilities through a multi-linear actuator as versatile self-piercing riveting (V-SPR) and a tumbling superimposed actuator as tumbling self-piercing riveting (T-SPR). Initial research into V-SPR has shown that this process can be used to achieve a higher variation in overall package thickness by adapting the rivet geometry and using multiple linear actuators. The T-SPR process also enables increased material flow control by means of targeted compression of the rivet using the tumbling actuator, thereby extending the range of joints that can be manufactured. Based on these two processes, a combination of the two mechanisms of action is to be developed. article_number: '01069' author: - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: Simon full_name: Wituschek, Simon id: '83423' last_name: Wituschek - first_name: Michael full_name: Lechner, Michael last_name: Lechner - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Holtkamp PK, Wituschek S, Lechner M, Meschut G. Integration of multiple-linear and tumbling kinematics into self-piercing riveting. MATEC Web of Conferences. 2025;408. doi:10.1051/matecconf/202540801069 apa: Holtkamp, P. K., Wituschek, S., Lechner, M., & Meschut, G. (2025). Integration of multiple-linear and tumbling kinematics into self-piercing riveting. MATEC Web of Conferences, 408, Article 01069. https://doi.org/10.1051/matecconf/202540801069 bibtex: '@article{Holtkamp_Wituschek_Lechner_Meschut_2025, title={Integration of multiple-linear and tumbling kinematics into self-piercing riveting}, volume={408}, DOI={10.1051/matecconf/202540801069}, number={01069}, journal={MATEC Web of Conferences}, publisher={EDP Sciences}, author={Holtkamp, Pia Katharina and Wituschek, Simon and Lechner, Michael and Meschut, Gerson}, year={2025} }' chicago: Holtkamp, Pia Katharina, Simon Wituschek, Michael Lechner, and Gerson Meschut. “Integration of Multiple-Linear and Tumbling Kinematics into Self-Piercing Riveting.” MATEC Web of Conferences 408 (2025). https://doi.org/10.1051/matecconf/202540801069. ieee: 'P. K. Holtkamp, S. Wituschek, M. Lechner, and G. Meschut, “Integration of multiple-linear and tumbling kinematics into self-piercing riveting,” MATEC Web of Conferences, vol. 408, Art. no. 01069, 2025, doi: 10.1051/matecconf/202540801069.' mla: Holtkamp, Pia Katharina, et al. “Integration of Multiple-Linear and Tumbling Kinematics into Self-Piercing Riveting.” MATEC Web of Conferences, vol. 408, 01069, EDP Sciences, 2025, doi:10.1051/matecconf/202540801069. short: P.K. Holtkamp, S. Wituschek, M. Lechner, G. Meschut, MATEC Web of Conferences 408 (2025). date_created: 2025-06-27T08:27:42Z date_updated: 2025-06-27T08:34:46Z department: - _id: '43' - _id: '157' doi: 10.1051/matecconf/202540801069 intvolume: ' 408' language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' publication: MATEC Web of Conferences publication_identifier: issn: - 2261-236X publication_status: published publisher: EDP Sciences quality_controlled: '1' status: public title: Integration of multiple-linear and tumbling kinematics into self-piercing riveting type: journal_article user_id: '44935' volume: 408 year: '2025' ... --- _id: '60439' abstract: - lang: eng text: Abstract. Mechanical joints are traditionally analyzed through destructive micrograph analysis, which may compromise internal geometry and morphology, as evidenced by radial cracks in semi-tubular self-pierce riveting. In contrast, industrial X-ray computed tomography (XCT) offers a non-destructive method for component diagnosis, providing volumetric insights without damaging the sample and enabling dimensional measurement. The DFG-funded Collaborative Research Center TRR 285 is exploring XCT's application in assessing mechanical joinability across various joining processes and materials, particularly in multi-material systems like steel-aluminum joints. XCT faces challenges in accurately capturing multi-material compositions, leading to artifacts that complicate interface detection. This research aims to validate XCT for joint investigations, yielding quantitative characteristics that surpass those from traditional micrograph analysis. author: - first_name: M. full_name: Lechner, M. last_name: Lechner - first_name: Thomas full_name: Borgert, Thomas id: '83141' last_name: Borgert - first_name: Matthias full_name: Busch, Matthias id: '83421' last_name: Busch orcid: https://orcid.org/0000-0002-8456-3374 - first_name: A. full_name: Harms, A. last_name: Harms - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: D. full_name: Römisch, D. last_name: Römisch - first_name: Simon full_name: Wituschek, Simon id: '83423' last_name: Wituschek - first_name: Fabian full_name: Kappe, Fabian id: '66459' last_name: Kappe citation: ama: 'Lechner M, Borgert T, Busch M, et al. Non-destructive testing in versatile joining processes. In: Materials Research Proceedings. Vol 52. Materials Research Forum LLC; 2025. doi:10.21741/9781644903551-12' apa: Lechner, M., Borgert, T., Busch, M., Harms, A., Holtkamp, P. K., Römisch, D., Wituschek, S., & Kappe, F. (2025). Non-destructive testing in versatile joining processes. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-12 bibtex: '@inproceedings{Lechner_Borgert_Busch_Harms_Holtkamp_Römisch_Wituschek_Kappe_2025, title={Non-destructive testing in versatile joining processes}, volume={52}, DOI={10.21741/9781644903551-12}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Lechner, M. and Borgert, Thomas and Busch, Matthias and Harms, A. and Holtkamp, Pia Katharina and Römisch, D. and Wituschek, Simon and Kappe, Fabian}, year={2025} }' chicago: Lechner, M., Thomas Borgert, Matthias Busch, A. Harms, Pia Katharina Holtkamp, D. Römisch, Simon Wituschek, and Fabian Kappe. “Non-Destructive Testing in Versatile Joining Processes.” In Materials Research Proceedings, Vol. 52. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-12. ieee: 'M. Lechner et al., “Non-destructive testing in versatile joining processes,” in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-12.' mla: Lechner, M., et al. “Non-Destructive Testing in Versatile Joining Processes.” Materials Research Proceedings, vol. 52, Materials Research Forum LLC, 2025, doi:10.21741/9781644903551-12. short: 'M. Lechner, T. Borgert, M. Busch, A. Harms, P.K. Holtkamp, D. Römisch, S. Wituschek, F. Kappe, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2025-06-27T07:56:32Z date_updated: 2025-06-27T08:17:00Z department: - _id: '43' - _id: '157' doi: 10.21741/9781644903551-12 intvolume: ' 52' language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '145' name: 'TRR 285 – C01: TRR 285 - Subproject C01' - _id: '147' name: 'TRR 285 – C03: TRR 285 - Subproject C03' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' - _id: '149' name: 'TRR 285 – C05: TRR 285 - Subproject C05' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Non-destructive testing in versatile joining processes type: conference user_id: '44935' volume: 52 year: '2025' ... --- _id: '60469' 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. author: - first_name: Andreas Maximilian full_name: Schultz, Andreas Maximilian id: '40599' last_name: Schultz citation: ama: Schultz AM. Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr. LibreCat University; 2025. doi:10.17619/UNIPB/1-2315 apa: Schultz, A. M. (2025). Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr. LibreCat University. https://doi.org/10.17619/UNIPB/1-2315 bibtex: '@book{Schultz_2025, title={Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr}, DOI={10.17619/UNIPB/1-2315}, publisher={LibreCat University}, author={Schultz, Andreas Maximilian}, year={2025} }' chicago: Schultz, Andreas Maximilian. Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr. LibreCat University, 2025. https://doi.org/10.17619/UNIPB/1-2315. ieee: A. M. Schultz, Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr. LibreCat University, 2025. mla: Schultz, Andreas Maximilian. Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr. LibreCat University, 2025, doi:10.17619/UNIPB/1-2315. short: A.M. Schultz, Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr, LibreCat University, 2025. date_created: 2025-06-30T09:11:38Z date_updated: 2025-06-30T09:15:14Z department: - _id: '741' doi: 10.17619/UNIPB/1-2315 language: - iso: ger main_file_link: - open_access: '1' oa: '1' publication_status: epub_ahead publisher: LibreCat University status: public supervisor: - first_name: Iryna full_name: Mozgova, Iryna id: '95903' last_name: Mozgova - first_name: Roland full_name: Lachmayer, Roland last_name: Lachmayer title: Konzeptionierung eines digitalen Wissensmanagementsystems für die zivile Gefahrenabwehr am Beispiel der Feuerwehr type: dissertation user_id: '40599' year: '2025' ... --- _id: '60494' abstract: - lang: eng 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. author: - first_name: Reza full_name: Afsahnoudeh, Reza id: '90390' last_name: Afsahnoudeh orcid: https://orcid.org/0009-0001-3161-8036 - first_name: Julia full_name: Riese, Julia id: '101499' last_name: Riese orcid: 0000-0002-3053-0534 - first_name: Eugeny Y. full_name: Kenig, Eugeny Y. last_name: Kenig citation: ama: 'Afsahnoudeh R, Riese J, Kenig EY. Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis. In: Systems and Control Transactions. Vol 4. PSE Press; 2025. doi:10.69997/sct.178665' apa: 'Afsahnoudeh, R., Riese, J., & Kenig, E. Y. (2025). Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis. Systems and Control Transactions, 4. https://doi.org/10.69997/sct.178665' 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={10.69997/sct.178665}, booktitle={Systems and Control Transactions}, publisher={PSE Press}, author={Afsahnoudeh, Reza and Riese, Julia and Kenig, Eugeny Y.}, year={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 Systems and Control Transactions, Vol. 4. PSE Press, 2025. https://doi.org/10.69997/sct.178665.' 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 Systems and Control Transactions, 2025, vol. 4, doi: 10.69997/sct.178665.' mla: 'Afsahnoudeh, Reza, et al. “Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis.” Systems and Control Transactions, vol. 4, PSE Press, 2025, doi:10.69997/sct.178665.' short: 'R. Afsahnoudeh, J. Riese, E.Y. Kenig, in: Systems and Control Transactions, PSE Press, 2025.' date_created: 2025-07-02T07:56:12Z date_updated: 2025-07-02T07:57:08Z department: - _id: '831' doi: 10.69997/sct.178665 intvolume: ' 4' language: - iso: eng project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Systems and Control Transactions publication_identifier: issn: - 2818-4734 publication_status: published publisher: PSE Press quality_controlled: '1' status: public title: 'Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis' type: conference user_id: '101499' volume: 4 year: '2025' ... --- _id: '60493' 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. author: - first_name: Thorben full_name: Hochhaus, Thorben last_name: Hochhaus - first_name: Johannes full_name: Wloch, Johannes last_name: Wloch - first_name: Marcus full_name: Grünewald, Marcus last_name: Grünewald - first_name: Julia full_name: Riese, Julia id: '101499' last_name: Riese orcid: 0000-0002-3053-0534 citation: 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: Systems and Control Transactions. Vol 4. PSE Press; 2025. doi:10.69997/sct.196662' apa: Hochhaus, T., Wloch, J., Grünewald, M., & Riese, J. (2025). A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand. Systems and Control Transactions, 4. https://doi.org/10.69997/sct.196662 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={10.69997/sct.196662}, booktitle={Systems and Control Transactions}, publisher={PSE Press}, author={Hochhaus, Thorben and Wloch, Johannes and Grünewald, Marcus and Riese, Julia}, year={2025} }' 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 Systems and Control Transactions, Vol. 4. PSE Press, 2025. https://doi.org/10.69997/sct.196662. 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 Systems and Control Transactions, 2025, vol. 4, doi: 10.69997/sct.196662.' mla: Hochhaus, Thorben, et al. “A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand.” Systems and Control Transactions, vol. 4, PSE Press, 2025, doi:10.69997/sct.196662. short: 'T. Hochhaus, J. Wloch, M. Grünewald, J. Riese, in: Systems and Control Transactions, PSE Press, 2025.' date_created: 2025-07-02T07:52:30Z date_updated: 2025-07-02T07:57:22Z department: - _id: '831' doi: 10.69997/sct.196662 intvolume: ' 4' language: - iso: eng publication: Systems and Control Transactions publication_identifier: issn: - 2818-4734 publication_status: published publisher: PSE Press quality_controlled: '1' status: public title: A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand type: conference user_id: '101499' volume: 4 year: '2025' ... --- _id: '60552' abstract: - lang: eng text: AbstractThe 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 (3PhN, c‐C6H5N) with resonance‐stabilized propargyl radicals (C3H3) 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. article_type: original author: - first_name: Rahel full_name: Arns, Rahel last_name: Arns - first_name: Rory full_name: McClish, Rory last_name: McClish - first_name: Patrick full_name: Hemberger, Patrick last_name: Hemberger - first_name: Andras full_name: Bodi, Andras last_name: Bodi - first_name: Jordy full_name: Bouwman, Jordy last_name: Bouwman - first_name: Tina full_name: Kasper, Tina id: '94562' last_name: Kasper orcid: '0000-0003-3993-5316 ' - first_name: Domenik full_name: Schleier, Domenik id: '98339' last_name: Schleier citation: ama: Arns R, McClish R, Hemberger P, et al. Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? Angewandte Chemie International Edition. Published online 2025. doi:10.1002/anie.202503940 apa: Arns, R., McClish, R., Hemberger, P., Bodi, A., Bouwman, J., Kasper, T., & Schleier, D. (2025). Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202503940 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={10.1002/anie.202503940}, 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} }' 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?” Angewandte Chemie International Edition, 2025. https://doi.org/10.1002/anie.202503940. ieee: 'R. Arns et al., “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?,” Angewandte Chemie International Edition, 2025, doi: 10.1002/anie.202503940.' mla: Arns, Rahel, et al. “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?” Angewandte Chemie International Edition, Wiley, 2025, doi:10.1002/anie.202503940. short: R. Arns, R. McClish, P. Hemberger, A. Bodi, J. Bouwman, T. Kasper, D. Schleier, Angewandte Chemie International Edition (2025). date_created: 2025-07-08T10:27:46Z date_updated: 2025-07-08T10:39:30Z department: - _id: '728' doi: 10.1002/anie.202503940 language: - iso: eng publication: Angewandte Chemie International Edition publication_identifier: issn: - 1433-7851 - 1521-3773 publication_status: published publisher: Wiley status: public title: Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? type: journal_article user_id: '94562' year: '2025' ... --- _id: '60551' abstract: - lang: eng text: AbstractThe 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 (3PhN, c‐C6H5N) with resonance‐stabilized propargyl radicals (C3H3) 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. author: - first_name: Rahel full_name: Arns, Rahel last_name: Arns - first_name: Rory full_name: McClish, Rory last_name: McClish - first_name: Patrick full_name: Hemberger, Patrick last_name: Hemberger - first_name: Andras full_name: Bodi, Andras last_name: Bodi - first_name: Jordy full_name: Bouwman, Jordy last_name: Bouwman - first_name: Tina full_name: Kasper, Tina last_name: Kasper - first_name: Domenik full_name: Schleier, Domenik last_name: Schleier citation: ama: Arns R, McClish R, Hemberger P, et al. Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? Angewandte Chemie International Edition. Published online 2025. doi:10.1002/anie.202503940 apa: Arns, R., McClish, R., Hemberger, P., Bodi, A., Bouwman, J., Kasper, T., & Schleier, D. (2025). Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202503940 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={10.1002/anie.202503940}, 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} }' 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?” Angewandte Chemie International Edition, 2025. https://doi.org/10.1002/anie.202503940. ieee: 'R. Arns et al., “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?,” Angewandte Chemie International Edition, 2025, doi: 10.1002/anie.202503940.' mla: Arns, Rahel, et al. “Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?” Angewandte Chemie International Edition, Wiley, 2025, doi:10.1002/anie.202503940. short: R. Arns, R. McClish, P. Hemberger, A. Bodi, J. Bouwman, T. Kasper, D. Schleier, Angewandte Chemie International Edition (2025). date_created: 2025-07-08T10:27:37Z date_updated: 2025-07-08T10:34:45Z department: - _id: '728' doi: 10.1002/anie.202503940 language: - iso: eng publication: Angewandte Chemie International Edition publication_identifier: issn: - 1433-7851 - 1521-3773 publication_status: published publisher: Wiley status: public title: Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? type: journal_article user_id: '94562' year: '2025' ...