[{"title":"End-to-End Dereverberation, Beamforming, and Speech Recognition in A Cocktail Party","date_created":"2022-10-11T07:27:51Z","year":"2022","language":[{"iso":"eng"}],"ddc":["000"],"file":[{"date_updated":"2022-10-11T07:23:13Z","creator":"huesera","content_type":"application/pdf","date_created":"2022-10-11T07:23:13Z","file_size":6167931,"file_name":"End-to-End_Dereverberation_Beamforming_and_Speech_Recognition_in_A_Cocktail_Party.pdf","file_id":"33674","access_level":"open_access","relation":"main_file"}],"abstract":[{"lang":"eng","text":"Far-field multi-speaker automatic speech recognition (ASR) has drawn increasing attention in recent years. Most existing methods feature a signal processing frontend and an ASR backend. In realistic scenarios, these modules are usually trained separately or progressively, which suffers from either inter-module mismatch or a complicated training process. In this paper, we propose an end-to-end multi-channel model that jointly optimizes the speech enhancement (including speech dereverberation, denoising, and separation) frontend and the ASR backend as a single system. To the best of our knowledge, this is the first work that proposes to optimize dereverberation, beamforming, and multi-speaker ASR in a fully end-to-end manner. The frontend module consists of a weighted prediction error (WPE) based submodule for dereverberation and a neural beamformer for denoising and speech separation. For the backend, we adopt a widely used end-to-end (E2E) ASR architecture. It is worth noting that the entire model is differentiable and can be optimized in a fully end-to-end manner using only the ASR criterion, without the need of parallel signal-level labels. We evaluate the proposed model on several multi-speaker benchmark datasets, and experimental results show that the fully E2E ASR model can achieve competitive performance on both noisy and reverberant conditions, with over 30% relative word error rate (WER) reduction over the single-channel baseline systems."}],"publication":"IEEE/ACM Transactions on Audio, Speech, and Language Processing","doi":"10.1109/TASLP.2022.3209942","author":[{"full_name":"Zhang, Wangyou","last_name":"Zhang","first_name":"Wangyou"},{"full_name":"Chang, Xuankai","last_name":"Chang","first_name":"Xuankai"},{"first_name":"Christoph","full_name":"Boeddeker, Christoph","id":"40767","last_name":"Boeddeker"},{"last_name":"Nakatani","full_name":"Nakatani, Tomohiro","first_name":"Tomohiro"},{"last_name":"Watanabe","full_name":"Watanabe, Shinji","first_name":"Shinji"},{"full_name":"Qian, Yanmin","last_name":"Qian","first_name":"Yanmin"}],"oa":"1","date_updated":"2022-12-05T12:35:31Z","citation":{"short":"W. Zhang, X. Chang, C. Boeddeker, T. Nakatani, S. Watanabe, Y. Qian, IEEE/ACM Transactions on Audio, Speech, and Language Processing (2022).","bibtex":"@article{Zhang_Chang_Boeddeker_Nakatani_Watanabe_Qian_2022, title={End-to-End Dereverberation, Beamforming, and Speech Recognition in A Cocktail Party}, DOI={<a href=\"https://doi.org/10.1109/TASLP.2022.3209942\">10.1109/TASLP.2022.3209942</a>}, journal={IEEE/ACM Transactions on Audio, Speech, and Language Processing}, author={Zhang, Wangyou and Chang, Xuankai and Boeddeker, Christoph and Nakatani, Tomohiro and Watanabe, Shinji and Qian, Yanmin}, year={2022} }","mla":"Zhang, Wangyou, et al. “End-to-End Dereverberation, Beamforming, and Speech Recognition in A Cocktail Party.” <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>, 2022, doi:<a href=\"https://doi.org/10.1109/TASLP.2022.3209942\">10.1109/TASLP.2022.3209942</a>.","apa":"Zhang, W., Chang, X., Boeddeker, C., Nakatani, T., Watanabe, S., &#38; Qian, Y. (2022). End-to-End Dereverberation, Beamforming, and Speech Recognition in A Cocktail Party. <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>. <a href=\"https://doi.org/10.1109/TASLP.2022.3209942\">https://doi.org/10.1109/TASLP.2022.3209942</a>","chicago":"Zhang, Wangyou, Xuankai Chang, Christoph Boeddeker, Tomohiro Nakatani, Shinji Watanabe, and Yanmin Qian. “End-to-End Dereverberation, Beamforming, and Speech Recognition in A Cocktail Party.” <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>, 2022. <a href=\"https://doi.org/10.1109/TASLP.2022.3209942\">https://doi.org/10.1109/TASLP.2022.3209942</a>.","ieee":"W. Zhang, X. Chang, C. Boeddeker, T. Nakatani, S. Watanabe, and Y. Qian, “End-to-End Dereverberation, Beamforming, and Speech Recognition in A Cocktail Party,” <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>, 2022, doi: <a href=\"https://doi.org/10.1109/TASLP.2022.3209942\">10.1109/TASLP.2022.3209942</a>.","ama":"Zhang W, Chang X, Boeddeker C, Nakatani T, Watanabe S, Qian Y. End-to-End Dereverberation, Beamforming, and Speech Recognition in A Cocktail Party. <i>IEEE/ACM Transactions on Audio, Speech, and Language Processing</i>. Published online 2022. doi:<a href=\"https://doi.org/10.1109/TASLP.2022.3209942\">10.1109/TASLP.2022.3209942</a>"},"related_material":{"link":[{"url":"https://ieeexplore.ieee.org/abstract/document/9904314","relation":"confirmation"}]},"publication_status":"published","publication_identifier":{"issn":["Print ISSN: 2329-9290 Electronic ISSN: 2329-9304"]},"has_accepted_license":"1","file_date_updated":"2022-10-11T07:23:13Z","user_id":"40767","department":[{"_id":"54"}],"_id":"33669","status":"public","type":"journal_article"},{"title":"Characterization of Usage Data with the Help of Data Classifications","doi":"10.1007/s13132-022-01081-z","date_updated":"2022-12-05T12:51:03Z","publisher":"Springer Science and Business Media LLC","author":[{"full_name":"Panzner, Melina","last_name":"Panzner","first_name":"Melina"},{"full_name":"von Enzberg, Sebastian","last_name":"von Enzberg","first_name":"Sebastian"},{"first_name":"Maurice","last_name":"Meyer","full_name":"Meyer, Maurice"},{"last_name":"Dumitrescu","full_name":"Dumitrescu, Roman","first_name":"Roman"}],"date_created":"2022-12-05T12:49:56Z","year":"2022","citation":{"ieee":"M. Panzner, S. von Enzberg, M. Meyer, and R. Dumitrescu, “Characterization of Usage Data with the Help of Data Classifications,” <i>Journal of the Knowledge Economy</i>, 2022, doi: <a href=\"https://doi.org/10.1007/s13132-022-01081-z\">10.1007/s13132-022-01081-z</a>.","chicago":"Panzner, Melina, Sebastian von Enzberg, Maurice Meyer, and Roman Dumitrescu. “Characterization of Usage Data with the Help of Data Classifications.” <i>Journal of the Knowledge Economy</i>, 2022. <a href=\"https://doi.org/10.1007/s13132-022-01081-z\">https://doi.org/10.1007/s13132-022-01081-z</a>.","ama":"Panzner M, von Enzberg S, Meyer M, Dumitrescu R. Characterization of Usage Data with the Help of Data Classifications. <i>Journal of the Knowledge Economy</i>. Published online 2022. doi:<a href=\"https://doi.org/10.1007/s13132-022-01081-z\">10.1007/s13132-022-01081-z</a>","short":"M. Panzner, S. von Enzberg, M. Meyer, R. Dumitrescu, Journal of the Knowledge Economy (2022).","bibtex":"@article{Panzner_von Enzberg_Meyer_Dumitrescu_2022, title={Characterization of Usage Data with the Help of Data Classifications}, DOI={<a href=\"https://doi.org/10.1007/s13132-022-01081-z\">10.1007/s13132-022-01081-z</a>}, journal={Journal of the Knowledge Economy}, publisher={Springer Science and Business Media LLC}, author={Panzner, Melina and von Enzberg, Sebastian and Meyer, Maurice and Dumitrescu, Roman}, year={2022} }","mla":"Panzner, Melina, et al. “Characterization of Usage Data with the Help of Data Classifications.” <i>Journal of the Knowledge Economy</i>, Springer Science and Business Media LLC, 2022, doi:<a href=\"https://doi.org/10.1007/s13132-022-01081-z\">10.1007/s13132-022-01081-z</a>.","apa":"Panzner, M., von Enzberg, S., Meyer, M., &#38; Dumitrescu, R. (2022). Characterization of Usage Data with the Help of Data Classifications. <i>Journal of the Knowledge Economy</i>. <a href=\"https://doi.org/10.1007/s13132-022-01081-z\">https://doi.org/10.1007/s13132-022-01081-z</a>"},"publication_status":"published","publication_identifier":{"issn":["1868-7865","1868-7873"]},"keyword":["Economics and Econometrics"],"language":[{"iso":"eng"}],"_id":"34197","user_id":"15782","department":[{"_id":"563"}],"abstract":[{"text":"<jats:title>Abstract</jats:title><jats:p>Comprehensive data understanding is a key success driver for data analytics projects. Knowing the characteristics of the data helps a lot in selecting the appropriate data analysis techniques. Especially in data-driven product planning, knowledge about the data is a necessary prerequisite because data of the use phase is very heterogeneous. However, companies often do not have the necessary know-how or time to build up solid data understanding in connection with data analysis. In this paper, we develop a methodology to organize and categorize and thus understand use phase data in a way that makes it accessible to general data analytics workflows, following a design science research approach. We first present a knowledge base that lists typical use phase data from a product planning view. Second, we develop a taxonomy based on standard literature and real data objects, which covers the diversity of the data considered. The taxonomy provides 8 dimensions that support classification of use phase data and allows to capture data characteristics from a data analytics view. Finally, we combine both views by clustering the objects of the knowledge base according to the taxonomy. Each of the resulting clusters covers a typical combination of analytics relevant characteristics occurring in practice. By abstracting from the diversity of use phase data into artifacts with manageable complexity, our approach provides guidance to choose appropriate data analysis and AI techniques.</jats:p>","lang":"eng"}],"status":"public","type":"journal_article","publication":"Journal of the Knowledge Economy"},{"year":"2022","title":"Using vibration data to classify conditions in disk stack separators","date_created":"2022-12-05T12:47:22Z","publisher":"JVE International Ltd.","abstract":[{"text":"<jats:p>Mounting sensors in disk stack separators is often a major challenge due to the operating conditions. However, a process cannot be optimally monitored without sensors. Virtual sensors can be a solution to calculate the sought parameters from measurable values. We measured the vibrations of disk stack separators and applied machine learning (ML) to detect whether the separator contains only water or whether particles are also present. We combined seven ML classification algorithms with three feature engineering strategies and evaluated our model successfully on vibration data of an experimental disk stack separator. Our experimental results demonstrate that random forest in combination with manual feature engineering using domain specific knowledge about suitable features outperforms all other models with an accuracy of 91.27 %.</jats:p>","lang":"eng"}],"publication":"Vibroengineering PROCEDIA","language":[{"iso":"eng"}],"keyword":["General Medicine"],"citation":{"mla":"Merkelbach, Silke, et al. “Using Vibration Data to Classify Conditions in Disk Stack Separators.” <i>Vibroengineering PROCEDIA</i>, vol. 46, JVE International Ltd., 2022, pp. 21–26, doi:<a href=\"https://doi.org/10.21595/vp.2022.23000\">10.21595/vp.2022.23000</a>.","short":"S. Merkelbach, L. Afroze, N. Janssen, S. von Enzberg, A. Kühn, R. Dumitrescu, Vibroengineering PROCEDIA 46 (2022) 21–26.","bibtex":"@article{Merkelbach_Afroze_Janssen_von Enzberg_Kühn_Dumitrescu_2022, title={Using vibration data to classify conditions in disk stack separators}, volume={46}, DOI={<a href=\"https://doi.org/10.21595/vp.2022.23000\">10.21595/vp.2022.23000</a>}, journal={Vibroengineering PROCEDIA}, publisher={JVE International Ltd.}, author={Merkelbach, Silke and Afroze, Lameya and Janssen, Nils and von Enzberg, Sebastian and Kühn, Arno and Dumitrescu, Roman}, year={2022}, pages={21–26} }","apa":"Merkelbach, S., Afroze, L., Janssen, N., von Enzberg, S., Kühn, A., &#38; Dumitrescu, R. (2022). Using vibration data to classify conditions in disk stack separators. <i>Vibroengineering PROCEDIA</i>, <i>46</i>, 21–26. <a href=\"https://doi.org/10.21595/vp.2022.23000\">https://doi.org/10.21595/vp.2022.23000</a>","ieee":"S. Merkelbach, L. Afroze, N. Janssen, S. von Enzberg, A. Kühn, and R. Dumitrescu, “Using vibration data to classify conditions in disk stack separators,” <i>Vibroengineering PROCEDIA</i>, vol. 46, pp. 21–26, 2022, doi: <a href=\"https://doi.org/10.21595/vp.2022.23000\">10.21595/vp.2022.23000</a>.","chicago":"Merkelbach, Silke, Lameya Afroze, Nils Janssen, Sebastian von Enzberg, Arno Kühn, and Roman Dumitrescu. “Using Vibration Data to Classify Conditions in Disk Stack Separators.” <i>Vibroengineering PROCEDIA</i> 46 (2022): 21–26. <a href=\"https://doi.org/10.21595/vp.2022.23000\">https://doi.org/10.21595/vp.2022.23000</a>.","ama":"Merkelbach S, Afroze L, Janssen N, von Enzberg S, Kühn A, Dumitrescu R. Using vibration data to classify conditions in disk stack separators. <i>Vibroengineering PROCEDIA</i>. 2022;46:21-26. doi:<a href=\"https://doi.org/10.21595/vp.2022.23000\">10.21595/vp.2022.23000</a>"},"page":"21-26","intvolume":"        46","publication_status":"published","publication_identifier":{"issn":["2345-0533","2538-8479"]},"doi":"10.21595/vp.2022.23000","author":[{"first_name":"Silke","last_name":"Merkelbach","full_name":"Merkelbach, Silke"},{"first_name":"Lameya","last_name":"Afroze","full_name":"Afroze, Lameya"},{"first_name":"Nils","last_name":"Janssen","full_name":"Janssen, Nils"},{"last_name":"von Enzberg","full_name":"von Enzberg, Sebastian","first_name":"Sebastian"},{"first_name":"Arno","full_name":"Kühn, Arno","last_name":"Kühn"},{"first_name":"Roman","full_name":"Dumitrescu, Roman","last_name":"Dumitrescu"}],"volume":46,"date_updated":"2022-12-05T12:51:08Z","status":"public","type":"journal_article","user_id":"15782","department":[{"_id":"563"}],"_id":"34196"},{"language":[{"iso":"eng"}],"department":[{"_id":"563"}],"user_id":"15782","_id":"34195","status":"public","publication":"Praxishandbuch Robotic Process Automation (RPA)","type":"book_chapter","doi":"10.1007/978-3-658-38379-4_8","title":"Soziotechnische Herausforderungen bei der Einführung von RPA managen","author":[{"last_name":"Hobscheidt","full_name":"Hobscheidt, Daniela","first_name":"Daniela"},{"first_name":"Jörn Steffen","last_name":"Menzefricke","full_name":"Menzefricke, Jörn Steffen"},{"first_name":"Stefan","last_name":"Gabriel","full_name":"Gabriel, Stefan"},{"first_name":"Arno","last_name":"Kühn","full_name":"Kühn, Arno"},{"first_name":"Roman","last_name":"Dumitrescu","full_name":"Dumitrescu, Roman"}],"date_created":"2022-12-05T12:46:56Z","date_updated":"2022-12-05T12:51:11Z","publisher":"Springer Fachmedien Wiesbaden","citation":{"apa":"Hobscheidt, D., Menzefricke, J. S., Gabriel, S., Kühn, A., &#38; Dumitrescu, R. (2022). Soziotechnische Herausforderungen bei der Einführung von RPA managen. In <i>Praxishandbuch Robotic Process Automation (RPA)</i>. Springer Fachmedien Wiesbaden. <a href=\"https://doi.org/10.1007/978-3-658-38379-4_8\">https://doi.org/10.1007/978-3-658-38379-4_8</a>","short":"D. Hobscheidt, J.S. Menzefricke, S. Gabriel, A. Kühn, R. Dumitrescu, in: Praxishandbuch Robotic Process Automation (RPA), Springer Fachmedien Wiesbaden, Wiesbaden, 2022.","bibtex":"@inbook{Hobscheidt_Menzefricke_Gabriel_Kühn_Dumitrescu_2022, place={Wiesbaden}, title={Soziotechnische Herausforderungen bei der Einführung von RPA managen}, DOI={<a href=\"https://doi.org/10.1007/978-3-658-38379-4_8\">10.1007/978-3-658-38379-4_8</a>}, booktitle={Praxishandbuch Robotic Process Automation (RPA)}, publisher={Springer Fachmedien Wiesbaden}, author={Hobscheidt, Daniela and Menzefricke, Jörn Steffen and Gabriel, Stefan and Kühn, Arno and Dumitrescu, Roman}, year={2022} }","mla":"Hobscheidt, Daniela, et al. “Soziotechnische Herausforderungen Bei Der Einführung von RPA Managen.” <i>Praxishandbuch Robotic Process Automation (RPA)</i>, Springer Fachmedien Wiesbaden, 2022, doi:<a href=\"https://doi.org/10.1007/978-3-658-38379-4_8\">10.1007/978-3-658-38379-4_8</a>.","ieee":"D. Hobscheidt, J. S. Menzefricke, S. Gabriel, A. Kühn, and R. Dumitrescu, “Soziotechnische Herausforderungen bei der Einführung von RPA managen,” in <i>Praxishandbuch Robotic Process Automation (RPA)</i>, Wiesbaden: Springer Fachmedien Wiesbaden, 2022.","chicago":"Hobscheidt, Daniela, Jörn Steffen Menzefricke, Stefan Gabriel, Arno Kühn, and Roman Dumitrescu. “Soziotechnische Herausforderungen Bei Der Einführung von RPA Managen.” In <i>Praxishandbuch Robotic Process Automation (RPA)</i>. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. <a href=\"https://doi.org/10.1007/978-3-658-38379-4_8\">https://doi.org/10.1007/978-3-658-38379-4_8</a>.","ama":"Hobscheidt D, Menzefricke JS, Gabriel S, Kühn A, Dumitrescu R. Soziotechnische Herausforderungen bei der Einführung von RPA managen. In: <i>Praxishandbuch Robotic Process Automation (RPA)</i>. Springer Fachmedien Wiesbaden; 2022. doi:<a href=\"https://doi.org/10.1007/978-3-658-38379-4_8\">10.1007/978-3-658-38379-4_8</a>"},"place":"Wiesbaden","year":"2022","publication_identifier":{"isbn":["9783658383787","9783658383794"]},"publication_status":"published"},{"author":[{"first_name":"Michael","last_name":"Bansmann","full_name":"Bansmann, Michael"},{"first_name":"Roman","full_name":"Dumitrescu, Roman","last_name":"Dumitrescu"},{"full_name":"Fechtelpeter, Christian","last_name":"Fechtelpeter","first_name":"Christian"}],"date_created":"2022-12-05T12:45:43Z","date_updated":"2022-12-05T12:51:19Z","publisher":"Springer Berlin Heidelberg","doi":"10.1007/978-3-662-58014-1_3","title":"Transfer von Arbeit 4.0-Anwendungsszenarien","publication_status":"published","publication_identifier":{"issn":["2523-3637","2523-3645"],"isbn":["9783662580134","9783662580141"]},"citation":{"ama":"Bansmann M, Dumitrescu R, Fechtelpeter C. Transfer von Arbeit 4.0-Anwendungsszenarien. In: <i>Gestaltung Digitalisierter Arbeitswelten</i>. Springer Berlin Heidelberg; 2022. doi:<a href=\"https://doi.org/10.1007/978-3-662-58014-1_3\">10.1007/978-3-662-58014-1_3</a>","ieee":"M. Bansmann, R. Dumitrescu, and C. Fechtelpeter, “Transfer von Arbeit 4.0-Anwendungsszenarien,” in <i>Gestaltung digitalisierter Arbeitswelten</i>, Berlin, Heidelberg: Springer Berlin Heidelberg, 2022.","chicago":"Bansmann, Michael, Roman Dumitrescu, and Christian Fechtelpeter. “Transfer von Arbeit 4.0-Anwendungsszenarien.” In <i>Gestaltung Digitalisierter Arbeitswelten</i>. Berlin, Heidelberg: Springer Berlin Heidelberg, 2022. <a href=\"https://doi.org/10.1007/978-3-662-58014-1_3\">https://doi.org/10.1007/978-3-662-58014-1_3</a>.","bibtex":"@inbook{Bansmann_Dumitrescu_Fechtelpeter_2022, place={Berlin, Heidelberg}, title={Transfer von Arbeit 4.0-Anwendungsszenarien}, DOI={<a href=\"https://doi.org/10.1007/978-3-662-58014-1_3\">10.1007/978-3-662-58014-1_3</a>}, booktitle={Gestaltung digitalisierter Arbeitswelten}, publisher={Springer Berlin Heidelberg}, author={Bansmann, Michael and Dumitrescu, Roman and Fechtelpeter, Christian}, year={2022} }","mla":"Bansmann, Michael, et al. “Transfer von Arbeit 4.0-Anwendungsszenarien.” <i>Gestaltung Digitalisierter Arbeitswelten</i>, Springer Berlin Heidelberg, 2022, doi:<a href=\"https://doi.org/10.1007/978-3-662-58014-1_3\">10.1007/978-3-662-58014-1_3</a>.","short":"M. Bansmann, R. Dumitrescu, C. Fechtelpeter, in: Gestaltung Digitalisierter Arbeitswelten, Springer Berlin Heidelberg, Berlin, Heidelberg, 2022.","apa":"Bansmann, M., Dumitrescu, R., &#38; Fechtelpeter, C. (2022). Transfer von Arbeit 4.0-Anwendungsszenarien. In <i>Gestaltung digitalisierter Arbeitswelten</i>. Springer Berlin Heidelberg. <a href=\"https://doi.org/10.1007/978-3-662-58014-1_3\">https://doi.org/10.1007/978-3-662-58014-1_3</a>"},"year":"2022","place":"Berlin, Heidelberg","user_id":"15782","department":[{"_id":"563"}],"_id":"34193","language":[{"iso":"eng"}],"type":"book_chapter","publication":"Gestaltung digitalisierter Arbeitswelten","status":"public"},{"language":[{"iso":"eng"}],"_id":"34194","department":[{"_id":"563"}],"user_id":"15782","status":"public","publication":"Praxishandbuch Robotic Process Automation (RPA)","type":"book_chapter","title":"Nutzung von Process Mining in RPA-Projekten","doi":"10.1007/978-3-658-38379-4_5","publisher":"Springer Fachmedien Wiesbaden","date_updated":"2022-12-05T12:51:14Z","date_created":"2022-12-05T12:46:26Z","author":[{"last_name":"Brock","full_name":"Brock, Jonathan","first_name":"Jonathan"},{"first_name":"Sebastian","last_name":"von Enzberg","full_name":"von Enzberg, Sebastian"},{"first_name":"Arno","last_name":"Kühn","full_name":"Kühn, Arno"},{"first_name":"Roman","last_name":"Dumitrescu","full_name":"Dumitrescu, Roman"}],"year":"2022","place":"Wiesbaden","citation":{"mla":"Brock, Jonathan, et al. “Nutzung von Process Mining in RPA-Projekten.” <i>Praxishandbuch Robotic Process Automation (RPA)</i>, Springer Fachmedien Wiesbaden, 2022, doi:<a href=\"https://doi.org/10.1007/978-3-658-38379-4_5\">10.1007/978-3-658-38379-4_5</a>.","bibtex":"@inbook{Brock_von Enzberg_Kühn_Dumitrescu_2022, place={Wiesbaden}, title={Nutzung von Process Mining in RPA-Projekten}, DOI={<a href=\"https://doi.org/10.1007/978-3-658-38379-4_5\">10.1007/978-3-658-38379-4_5</a>}, booktitle={Praxishandbuch Robotic Process Automation (RPA)}, publisher={Springer Fachmedien Wiesbaden}, author={Brock, Jonathan and von Enzberg, Sebastian and Kühn, Arno and Dumitrescu, Roman}, year={2022} }","short":"J. Brock, S. von Enzberg, A. Kühn, R. Dumitrescu, in: Praxishandbuch Robotic Process Automation (RPA), Springer Fachmedien Wiesbaden, Wiesbaden, 2022.","apa":"Brock, J., von Enzberg, S., Kühn, A., &#38; Dumitrescu, R. (2022). Nutzung von Process Mining in RPA-Projekten. In <i>Praxishandbuch Robotic Process Automation (RPA)</i>. Springer Fachmedien Wiesbaden. <a href=\"https://doi.org/10.1007/978-3-658-38379-4_5\">https://doi.org/10.1007/978-3-658-38379-4_5</a>","ieee":"J. Brock, S. von Enzberg, A. Kühn, and R. Dumitrescu, “Nutzung von Process Mining in RPA-Projekten,” in <i>Praxishandbuch Robotic Process Automation (RPA)</i>, Wiesbaden: Springer Fachmedien Wiesbaden, 2022.","chicago":"Brock, Jonathan, Sebastian von Enzberg, Arno Kühn, and Roman Dumitrescu. “Nutzung von Process Mining in RPA-Projekten.” In <i>Praxishandbuch Robotic Process Automation (RPA)</i>. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. <a href=\"https://doi.org/10.1007/978-3-658-38379-4_5\">https://doi.org/10.1007/978-3-658-38379-4_5</a>.","ama":"Brock J, von Enzberg S, Kühn A, Dumitrescu R. Nutzung von Process Mining in RPA-Projekten. In: <i>Praxishandbuch Robotic Process Automation (RPA)</i>. Springer Fachmedien Wiesbaden; 2022. doi:<a href=\"https://doi.org/10.1007/978-3-658-38379-4_5\">10.1007/978-3-658-38379-4_5</a>"},"publication_identifier":{"isbn":["9783658383787","9783658383794"]},"publication_status":"published"},{"language":[{"iso":"ger"}],"keyword":["Strategy and Management","Applied Psychology","Social Sciences (miscellaneous)","Education","Communication","Statistics and Probability"],"publication":"Zeitschrift für Evaluation","abstract":[{"text":"<jats:p>Praxeologische Kompetenzansätze verstehen Kompetenz als sozial erlernt und folglich als relativ zum sozialen Kontext. Damit einher geht die Frage, wie solche praxeologisch gerahmten Kompetenzen eigentlich unabhängig von der sie hervorbringenden Praxis evaluiert werden können – und eben dadurch erst für einen breiteren Kompetenzdiskurs fruchtbar sind. Die Dokumentarische Evaluationsforschung bietet hierzu erste Anhaltspunkte, offenbart aber auch Grenzen, die mit dem Evaluationsverständnis zusammenhängen, sich jedoch in der Forschungspraxis so nicht finden lassen. Aus der Differenz zwischen Methode und Praxis dokumentarischer Evaluation lässt sich formulieren, wie eine praxeologische Evaluation gestaltet werden könnte. Dabei spielt die Formulierung von Referenzrahmen eine zentrale Rolle, welche einerseits der zu evaluierenden Praktik external sein, andererseits praktisch formuliert werden müssen, damit sie soziale Praktiken jenseits ihrer eigenen Sinnhaftigkeit evaluativ (er-)fassen können.</jats:p>","lang":"eng"}],"date_created":"2022-12-05T13:25:58Z","publisher":"Waxmann","title":"Rekonstruktive Evaluationsforschung im Kontext praxeologischer Kompetenzdiskurse. Kritische Reflexionen und konzeptionelle Überlegungen zur Dokumentarischen Evaluationsforschung","issue":"02","quality_controlled":"1","year":"2022","department":[{"_id":"4"}],"user_id":"69383","_id":"34200","type":"journal_article","status":"public","volume":2022,"author":[{"first_name":"Thiemo","last_name":"Bloh","full_name":"Bloh, Thiemo"}],"date_updated":"2022-12-05T13:26:35Z","doi":"10.31244/zfe.2022.02.02","publication_identifier":{"issn":["1619-5515","2699-5506"]},"publication_status":"published","page":"193-215","intvolume":"      2022","citation":{"ama":"Bloh T. Rekonstruktive Evaluationsforschung im Kontext praxeologischer Kompetenzdiskurse. Kritische Reflexionen und konzeptionelle Überlegungen zur Dokumentarischen Evaluationsforschung. <i>Zeitschrift für Evaluation</i>. 2022;2022(02):193-215. doi:<a href=\"https://doi.org/10.31244/zfe.2022.02.02\">10.31244/zfe.2022.02.02</a>","ieee":"T. Bloh, “Rekonstruktive Evaluationsforschung im Kontext praxeologischer Kompetenzdiskurse. Kritische Reflexionen und konzeptionelle Überlegungen zur Dokumentarischen Evaluationsforschung,” <i>Zeitschrift für Evaluation</i>, vol. 2022, no. 02, pp. 193–215, 2022, doi: <a href=\"https://doi.org/10.31244/zfe.2022.02.02\">10.31244/zfe.2022.02.02</a>.","chicago":"Bloh, Thiemo. “Rekonstruktive Evaluationsforschung im Kontext praxeologischer Kompetenzdiskurse. Kritische Reflexionen und konzeptionelle Überlegungen zur Dokumentarischen Evaluationsforschung.” <i>Zeitschrift für Evaluation</i> 2022, no. 02 (2022): 193–215. <a href=\"https://doi.org/10.31244/zfe.2022.02.02\">https://doi.org/10.31244/zfe.2022.02.02</a>.","bibtex":"@article{Bloh_2022, title={Rekonstruktive Evaluationsforschung im Kontext praxeologischer Kompetenzdiskurse. Kritische Reflexionen und konzeptionelle Überlegungen zur Dokumentarischen Evaluationsforschung}, volume={2022}, DOI={<a href=\"https://doi.org/10.31244/zfe.2022.02.02\">10.31244/zfe.2022.02.02</a>}, number={02}, journal={Zeitschrift für Evaluation}, publisher={Waxmann}, author={Bloh, Thiemo}, year={2022}, pages={193–215} }","short":"T. Bloh, Zeitschrift für Evaluation 2022 (2022) 193–215.","mla":"Bloh, Thiemo. “Rekonstruktive Evaluationsforschung im Kontext praxeologischer Kompetenzdiskurse. Kritische Reflexionen und konzeptionelle Überlegungen zur Dokumentarischen Evaluationsforschung.” <i>Zeitschrift für Evaluation</i>, vol. 2022, no. 02, Waxmann, 2022, pp. 193–215, doi:<a href=\"https://doi.org/10.31244/zfe.2022.02.02\">10.31244/zfe.2022.02.02</a>.","apa":"Bloh, T. (2022). Rekonstruktive Evaluationsforschung im Kontext praxeologischer Kompetenzdiskurse. Kritische Reflexionen und konzeptionelle Überlegungen zur Dokumentarischen Evaluationsforschung. <i>Zeitschrift für Evaluation</i>, <i>2022</i>(02), 193–215. <a href=\"https://doi.org/10.31244/zfe.2022.02.02\">https://doi.org/10.31244/zfe.2022.02.02</a>"}},{"department":[{"_id":"4"}],"user_id":"69383","_id":"34198","language":[{"iso":"ger"}],"publication":"die hochschullehre","type":"journal_article","status":"public","volume":8,"date_created":"2022-12-05T13:23:42Z","author":[{"first_name":"Thiemo","orcid":"0000-0002-2215-2924","last_name":"Bloh","full_name":"Bloh, Thiemo","id":"69383"},{"first_name":"Carina","full_name":"Caruso, Carina","last_name":"Caruso"}],"oa":"1","date_updated":"2022-12-05T13:26:41Z","doi":"10.3278/HSL2221W","main_file_link":[{"url":"https://www.wbv.de/shop/Ein-kritisch-multiperspektivischer-Blick-auf-Forschendes-Lernen-in-der-Lehrkraeftebildung-HSL2221W","open_access":"1"}],"title":"Ein kritisch-multiperspektivischer Blick auf Forschendes Lernen in der Lehrkräftebildung. Fragen, Erwägungen und Rekonstruktionen.","quality_controlled":"1","publication_status":"published","intvolume":"         8","citation":{"bibtex":"@article{Bloh_Caruso_2022, title={Ein kritisch-multiperspektivischer Blick auf Forschendes Lernen in der Lehrkräftebildung. Fragen, Erwägungen und Rekonstruktionen.}, volume={8}, DOI={<a href=\"https://doi.org/10.3278/HSL2221W\">10.3278/HSL2221W</a>}, journal={die hochschullehre}, author={Bloh, Thiemo and Caruso, Carina}, year={2022} }","mla":"Bloh, Thiemo, and Carina Caruso. “Ein kritisch-multiperspektivischer Blick auf Forschendes Lernen in der Lehrkräftebildung. Fragen, Erwägungen und Rekonstruktionen.” <i>die hochschullehre</i>, vol. 8, 2022, doi:<a href=\"https://doi.org/10.3278/HSL2221W\">10.3278/HSL2221W</a>.","short":"T. Bloh, C. Caruso, die hochschullehre 8 (2022).","apa":"Bloh, T., &#38; Caruso, C. (2022). Ein kritisch-multiperspektivischer Blick auf Forschendes Lernen in der Lehrkräftebildung. Fragen, Erwägungen und Rekonstruktionen. <i>die hochschullehre</i>, <i>8</i>. <a href=\"https://doi.org/10.3278/HSL2221W\">https://doi.org/10.3278/HSL2221W</a>","ama":"Bloh T, Caruso C. Ein kritisch-multiperspektivischer Blick auf Forschendes Lernen in der Lehrkräftebildung. Fragen, Erwägungen und Rekonstruktionen. <i>die hochschullehre</i>. 2022;8. doi:<a href=\"https://doi.org/10.3278/HSL2221W\">10.3278/HSL2221W</a>","ieee":"T. Bloh and C. Caruso, “Ein kritisch-multiperspektivischer Blick auf Forschendes Lernen in der Lehrkräftebildung. Fragen, Erwägungen und Rekonstruktionen.,” <i>die hochschullehre</i>, vol. 8, 2022, doi: <a href=\"https://doi.org/10.3278/HSL2221W\">10.3278/HSL2221W</a>.","chicago":"Bloh, Thiemo, and Carina Caruso. “Ein kritisch-multiperspektivischer Blick auf Forschendes Lernen in der Lehrkräftebildung. Fragen, Erwägungen und Rekonstruktionen.” <i>die hochschullehre</i> 8 (2022). <a href=\"https://doi.org/10.3278/HSL2221W\">https://doi.org/10.3278/HSL2221W</a>."},"year":"2022"},{"quality_controlled":"1","publication_status":"published","issue":"6","year":"2022","page":"749-762","intvolume":"        68","citation":{"ieee":"T. Bloh, “Grundlagentheoretische Differenzen in der Lehrkräftekooperationsforschung,” <i>Zeitschrift für Pädagogik</i>, vol. 68, no. 6, pp. 749–762, 2022, doi: <a href=\"https://doi.org/10.3262/ZP2206749\">10.3262/ZP2206749</a>.","chicago":"Bloh, Thiemo. “Grundlagentheoretische Differenzen in der Lehrkräftekooperationsforschung.” <i>Zeitschrift für Pädagogik</i> 68, no. 6 (2022): 749–62. <a href=\"https://doi.org/10.3262/ZP2206749\">https://doi.org/10.3262/ZP2206749</a>.","ama":"Bloh T. Grundlagentheoretische Differenzen in der Lehrkräftekooperationsforschung. <i>Zeitschrift für Pädagogik</i>. 2022;68(6):749-762. doi:<a href=\"https://doi.org/10.3262/ZP2206749\">10.3262/ZP2206749</a>","apa":"Bloh, T. (2022). Grundlagentheoretische Differenzen in der Lehrkräftekooperationsforschung. <i>Zeitschrift für Pädagogik</i>, <i>68</i>(6), 749–762. <a href=\"https://doi.org/10.3262/ZP2206749\">https://doi.org/10.3262/ZP2206749</a>","mla":"Bloh, Thiemo. “Grundlagentheoretische Differenzen in der Lehrkräftekooperationsforschung.” <i>Zeitschrift für Pädagogik</i>, vol. 68, no. 6, 2022, pp. 749–62, doi:<a href=\"https://doi.org/10.3262/ZP2206749\">10.3262/ZP2206749</a>.","short":"T. Bloh, Zeitschrift für Pädagogik 68 (2022) 749–762.","bibtex":"@article{Bloh_2022, title={Grundlagentheoretische Differenzen in der Lehrkräftekooperationsforschung}, volume={68}, DOI={<a href=\"https://doi.org/10.3262/ZP2206749\">10.3262/ZP2206749</a>}, number={6}, journal={Zeitschrift für Pädagogik}, author={Bloh, Thiemo}, year={2022}, pages={749–762} }"},"date_updated":"2022-12-05T13:26:38Z","volume":68,"author":[{"first_name":"Thiemo","full_name":"Bloh, Thiemo","id":"69383","last_name":"Bloh","orcid":"0000-0002-2215-2924"}],"date_created":"2022-12-05T13:25:20Z","title":"Grundlagentheoretische Differenzen in der Lehrkräftekooperationsforschung","doi":"10.3262/ZP2206749","publication":"Zeitschrift für Pädagogik","type":"journal_article","status":"public","_id":"34199","department":[{"_id":"4"}],"user_id":"69383","language":[{"iso":"ger"}]},{"_id":"34207","project":[{"grant_number":"418701707","name":"TRR 285: TRR 285","_id":"130"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"_id":"136","name":"TRR 285 – A02: TRR 285 - Subproject A02"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285 – C02: TRR 285 - Subproject C02","_id":"146"}],"user_id":"7850","keyword":["Condensed Matter Physics","General Materials Science"],"article_number":"2200874","language":[{"iso":"eng"}],"publication":"Advanced Engineering Materials","type":"journal_article","abstract":[{"lang":"eng","text":"AlSi casting alloys combine excellent castability with high strength. Hence, this group of alloys is often used in the automotive sector. The challenge for this application is the brittle character of these alloys which leads to cracks during joint formation when mechanical joining technologies are used. A rise in ductility can be achieved by a considerable increase in the solidification rate which results in grain refinement. High solidification rates can be realized in twin–roll casting (TRC) by water-cooled rolls. Therefore, a hypoeutectic EN AC–AlSi9 (for European Norm - aluminum cast product) is manufactured by the TRC process and analyzed. Subsequently, joining investigations are performed on castings in as-cast and heat-treated condition using the self-piercing riveting process considering the joint formation and the load-bearing capacity. Due to the fine microstructure, the crack initiation can be avoided during joining, while maintaining the joining parameters, especially by specimens in heat treatment conditions. Furthermore, due to the extremely fine microstructure, the load-bearing capacity of the joint can be significantly increased in terms of the maximum load-bearing force and the energy absorbed."}],"status":"public","publisher":"Wiley","date_updated":"2022-12-05T20:09:50Z","volume":24,"author":[{"last_name":"Neuser","full_name":"Neuser, Moritz","first_name":"Moritz"},{"first_name":"Fabian","last_name":"Kappe","full_name":"Kappe, Fabian"},{"full_name":"Ostermeier, Jakob","last_name":"Ostermeier","first_name":"Jakob"},{"last_name":"Krüger","full_name":"Krüger, Jan Tobias","first_name":"Jan Tobias"},{"full_name":"Bobbert, Mathias","last_name":"Bobbert","first_name":"Mathias"},{"full_name":"Meschut, Gerson","last_name":"Meschut","first_name":"Gerson"},{"full_name":"Schaper, Mirko","last_name":"Schaper","first_name":"Mirko"},{"first_name":"Olexandr","last_name":"Grydin","full_name":"Grydin, Olexandr"}],"date_created":"2022-12-05T20:07:55Z","title":"Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting","doi":"10.1002/adem.202200874","publication_identifier":{"issn":["1438-1656","1527-2648"]},"publication_status":"published","issue":"10","year":"2022","intvolume":"        24","citation":{"bibtex":"@article{Neuser_Kappe_Ostermeier_Krüger_Bobbert_Meschut_Schaper_Grydin_2022, title={Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting}, volume={24}, DOI={<a href=\"https://doi.org/10.1002/adem.202200874\">10.1002/adem.202200874</a>}, number={102200874}, journal={Advanced Engineering Materials}, publisher={Wiley}, author={Neuser, Moritz and Kappe, Fabian and Ostermeier, Jakob and Krüger, Jan Tobias and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko and Grydin, Olexandr}, year={2022} }","short":"M. Neuser, F. Kappe, J. Ostermeier, J.T. Krüger, M. Bobbert, G. Meschut, M. Schaper, O. Grydin, Advanced Engineering Materials 24 (2022).","mla":"Neuser, Moritz, et al. “Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting.” <i>Advanced Engineering Materials</i>, vol. 24, no. 10, 2200874, Wiley, 2022, doi:<a href=\"https://doi.org/10.1002/adem.202200874\">10.1002/adem.202200874</a>.","apa":"Neuser, M., Kappe, F., Ostermeier, J., Krüger, J. T., Bobbert, M., Meschut, G., Schaper, M., &#38; Grydin, O. (2022). Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting. <i>Advanced Engineering Materials</i>, <i>24</i>(10), Article 2200874. <a href=\"https://doi.org/10.1002/adem.202200874\">https://doi.org/10.1002/adem.202200874</a>","ieee":"M. Neuser <i>et al.</i>, “Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting,” <i>Advanced Engineering Materials</i>, vol. 24, no. 10, Art. no. 2200874, 2022, doi: <a href=\"https://doi.org/10.1002/adem.202200874\">10.1002/adem.202200874</a>.","chicago":"Neuser, Moritz, Fabian Kappe, Jakob Ostermeier, Jan Tobias Krüger, Mathias Bobbert, Gerson Meschut, Mirko Schaper, and Olexandr Grydin. “Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting.” <i>Advanced Engineering Materials</i> 24, no. 10 (2022). <a href=\"https://doi.org/10.1002/adem.202200874\">https://doi.org/10.1002/adem.202200874</a>.","ama":"Neuser M, Kappe F, Ostermeier J, et al. Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting. <i>Advanced Engineering Materials</i>. 2022;24(10). doi:<a href=\"https://doi.org/10.1002/adem.202200874\">10.1002/adem.202200874</a>"}},{"type":"conference","status":"public","department":[{"_id":"4"}],"user_id":"69383","_id":"34203","language":[{"iso":"ger"}],"quality_controlled":"1","publication_status":"published","citation":{"chicago":"Bloh, Thiemo. “Was bedeutet Post-Digitalität? – Universitäre Lehrpraktiken zwischen situativer Anforderung und habitueller Prägung,” 2022.","ieee":"T. Bloh, “Was bedeutet Post-Digitalität? – Universitäre Lehrpraktiken zwischen situativer Anforderung und habitueller Prägung,” presented at the 50. Jahrestagung der DGHD, Paderborn, 2022.","ama":"Bloh T. Was bedeutet Post-Digitalität? – Universitäre Lehrpraktiken zwischen situativer Anforderung und habitueller Prägung. In: ; 2022.","apa":"Bloh, T. (2022). <i>Was bedeutet Post-Digitalität? – Universitäre Lehrpraktiken zwischen situativer Anforderung und habitueller Prägung</i>. 50. Jahrestagung der DGHD, Paderborn.","mla":"Bloh, Thiemo. <i>Was bedeutet Post-Digitalität? – Universitäre Lehrpraktiken zwischen situativer Anforderung und habitueller Prägung</i>. 2022.","bibtex":"@inproceedings{Bloh_2022, title={Was bedeutet Post-Digitalität? – Universitäre Lehrpraktiken zwischen situativer Anforderung und habitueller Prägung}, author={Bloh, Thiemo}, year={2022} }","short":"T. Bloh, in: 2022."},"year":"2022","author":[{"last_name":"Bloh","orcid":"0000-0002-2215-2924","full_name":"Bloh, Thiemo","id":"69383","first_name":"Thiemo"}],"date_created":"2022-12-05T13:32:00Z","date_updated":"2022-12-05T13:33:20Z","conference":{"start_date":"2022-09-06","name":"50. Jahrestagung der DGHD","location":"Paderborn","end_date":"2022-09-09"},"title":"Was bedeutet Post-Digitalität? – Universitäre Lehrpraktiken zwischen situativer Anforderung und habitueller Prägung"},{"status":"public","type":"conference","language":[{"iso":"ger"}],"_id":"34201","department":[{"_id":"4"}],"user_id":"69383","year":"2022","citation":{"short":"T. Bloh, in: 2022.","bibtex":"@inproceedings{Bloh_2022, title={AussteigerInnen – Fluchtbewegungen in der LehrerInnenbiographie}, author={Bloh, Thiemo}, year={2022} }","mla":"Bloh, Thiemo. <i>AussteigerInnen – Fluchtbewegungen in der LehrerInnenbiographie</i>. 2022.","apa":"Bloh, T. (2022). <i>AussteigerInnen – Fluchtbewegungen in der LehrerInnenbiographie</i>. Jahrestagung der DGfE-Kommission “Professionsforschung und Lehrer:innenbildung,” Oldenburg.","ama":"Bloh T. AussteigerInnen – Fluchtbewegungen in der LehrerInnenbiographie. In: ; 2022.","chicago":"Bloh, Thiemo. “AussteigerInnen – Fluchtbewegungen in der LehrerInnenbiographie,” 2022.","ieee":"T. Bloh, “AussteigerInnen – Fluchtbewegungen in der LehrerInnenbiographie,” presented at the Jahrestagung der DGfE-Kommission “Professionsforschung und Lehrer:innenbildung,” Oldenburg, 2022."},"quality_controlled":"1","publication_status":"published","title":"AussteigerInnen – Fluchtbewegungen in der LehrerInnenbiographie","conference":{"end_date":"2022-09-30","location":"Oldenburg","name":"Jahrestagung der DGfE-Kommission \"Professionsforschung und Lehrer:innenbildung\"","start_date":"2022-09-29"},"date_updated":"2022-12-05T13:33:25Z","author":[{"orcid":"0000-0002-2215-2924","last_name":"Bloh","full_name":"Bloh, Thiemo","id":"69383","first_name":"Thiemo"}],"date_created":"2022-12-05T13:29:08Z"},{"quality_controlled":"1","publication_status":"published","citation":{"ama":"Bloh T. „Referenzrahmen“ als gewinnbringendes Konstrukt im Kontext Dokumentarischer Evaluationsforschung!? In: ; 2022.","chicago":"Bloh, Thiemo. “„Referenzrahmen“ als gewinnbringendes Konstrukt im Kontext Dokumentarischer Evaluationsforschung!?,” 2022.","ieee":"T. Bloh, “„Referenzrahmen“ als gewinnbringendes Konstrukt im Kontext Dokumentarischer Evaluationsforschung!?,” presented at the ces Jahrestagung, Frankfurt a.M., 2022.","apa":"Bloh, T. (2022). <i>„Referenzrahmen“ als gewinnbringendes Konstrukt im Kontext Dokumentarischer Evaluationsforschung!?</i> ces Jahrestagung, Frankfurt a.M.","bibtex":"@inproceedings{Bloh_2022, title={„Referenzrahmen“ als gewinnbringendes Konstrukt im Kontext Dokumentarischer Evaluationsforschung!?}, author={Bloh, Thiemo}, year={2022} }","mla":"Bloh, Thiemo. <i>„Referenzrahmen“ als gewinnbringendes Konstrukt im Kontext Dokumentarischer Evaluationsforschung!?</i> 2022.","short":"T. Bloh, in: 2022."},"year":"2022","author":[{"first_name":"Thiemo","id":"69383","full_name":"Bloh, Thiemo","orcid":"0000-0002-2215-2924","last_name":"Bloh"}],"date_created":"2022-12-05T13:30:50Z","date_updated":"2022-12-05T13:33:22Z","conference":{"start_date":"2022-09-22","name":"ces Jahrestagung","location":"Frankfurt a.M.","end_date":"2022-09-23"},"title":"„Referenzrahmen“ als gewinnbringendes Konstrukt im Kontext Dokumentarischer Evaluationsforschung!?","type":"conference","status":"public","department":[{"_id":"4"}],"user_id":"69383","_id":"34202","language":[{"iso":"ger"}]},{"citation":{"apa":"Bloh, T. (2022). <i>The Deconstruction of Professionalism</i>. EARLI SIG14 Conference 2022, Paderborn.","bibtex":"@inproceedings{Bloh_2022, title={The Deconstruction of Professionalism}, author={Bloh, Thiemo}, year={2022} }","short":"T. Bloh, in: 2022.","mla":"Bloh, Thiemo. <i>The Deconstruction of Professionalism</i>. 2022.","ama":"Bloh T. The Deconstruction of Professionalism. In: ; 2022.","chicago":"Bloh, Thiemo. “The Deconstruction of Professionalism,” 2022.","ieee":"T. Bloh, “The Deconstruction of Professionalism,” presented at the EARLI SIG14 Conference 2022, Paderborn, 2022."},"year":"2022","quality_controlled":"1","publication_status":"published","conference":{"end_date":"2022-08-19","location":"Paderborn","name":"EARLI SIG14 Conference 2022","start_date":"2022-08-17"},"title":"The Deconstruction of Professionalism","author":[{"orcid":"0000-0002-2215-2924","last_name":"Bloh","id":"69383","full_name":"Bloh, Thiemo","first_name":"Thiemo"}],"date_created":"2022-12-05T13:33:14Z","date_updated":"2022-12-05T13:33:17Z","status":"public","type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"4"}],"user_id":"69383","_id":"34204"},{"status":"public","abstract":[{"lang":"eng","text":"Nowadays, clinching is a widely used joining technique, where sheets are joined by pure deformation to create an interlock without the need for auxiliary parts. This leads to advantages such as reduced joining time and manufacturing\r\ncosts. On the other hand, the joint strength solely relies on directed material deformation, which renders an accurate material modelling essential to reliably predict the joint forming. The formation of the joint locally involves large plastic strains and possibly complex non-proportional loading paths, as typical of many metal forming applications. Consequently, a finite plasticity formulation is utilised incorporating a Chaboche–Rousselier kinematic hardening law to capture the Bauschinger effect. Material parameters are identified from tension–compression tests on miniature spec-\r\nimens for the dual-phase steel HCT590X. The resulting material model is implemented in LS-Dyna to study the locally diverse loading paths and give a quantitative statement on the importance of kinematic hardening for clinching. It turns out that the Bauschinger effect mainly affects the springback of the sheets and has a smaller effect on the joint forming itself."}],"type":"book_chapter","publication":"The Minerals, Metals &amp; Materials Series","language":[{"iso":"eng"}],"keyword":["Clinching","Material modelling","Kinematic hardening","Parameter identification","Bauschinger effect"],"user_id":"7850","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 – A05: TRR 285 - Subproject A05","_id":"139"}],"_id":"34211","citation":{"apa":"Friedlein, J., Mergheim, J., &#38; Steinmann, P. (2022). Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal. In <i>The Minerals, Metals &#38;amp; Materials Series</i>. Springer International Publishing. <a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">https://doi.org/10.1007/978-3-031-06212-4_31</a>","mla":"Friedlein, Johannes, et al. “Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal.” <i>The Minerals, Metals &#38;amp; Materials Series</i>, Springer International Publishing, 2022, doi:<a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">10.1007/978-3-031-06212-4_31</a>.","short":"J. Friedlein, J. Mergheim, P. Steinmann, in: The Minerals, Metals &#38;amp; Materials Series, Springer International Publishing, Cham, 2022.","bibtex":"@inbook{Friedlein_Mergheim_Steinmann_2022, place={Cham}, title={Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal}, DOI={<a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">10.1007/978-3-031-06212-4_31</a>}, booktitle={The Minerals, Metals &#38;amp; Materials Series}, publisher={Springer International Publishing}, author={Friedlein, Johannes and Mergheim, Julia and Steinmann, Paul}, year={2022} }","ieee":"J. Friedlein, J. Mergheim, and P. Steinmann, “Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal,” in <i>The Minerals, Metals &#38;amp; Materials Series</i>, Cham: Springer International Publishing, 2022.","chicago":"Friedlein, Johannes, Julia Mergheim, and Paul Steinmann. “Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal.” In <i>The Minerals, Metals &#38;amp; Materials Series</i>. Cham: Springer International Publishing, 2022. <a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">https://doi.org/10.1007/978-3-031-06212-4_31</a>.","ama":"Friedlein J, Mergheim J, Steinmann P. Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal. In: <i>The Minerals, Metals &#38;amp; Materials Series</i>. Springer International Publishing; 2022. doi:<a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">10.1007/978-3-031-06212-4_31</a>"},"place":"Cham","year":"2022","publication_status":"published","publication_identifier":{"isbn":["9783031062117","9783031062124"],"issn":["2367-1181","2367-1696"]},"doi":"10.1007/978-3-031-06212-4_31","title":"Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal","author":[{"last_name":"Friedlein","full_name":"Friedlein, Johannes","first_name":"Johannes"},{"full_name":"Mergheim, Julia","last_name":"Mergheim","first_name":"Julia"},{"last_name":"Steinmann","full_name":"Steinmann, Paul","first_name":"Paul"}],"date_created":"2022-12-05T21:01:29Z","date_updated":"2022-12-05T21:05:52Z","publisher":"Springer International Publishing"},{"publication":"Production Engineering","abstract":[{"lang":"eng","text":"In this paper, a study based on experimental and numerical simulations is performed to analyze fatigue cracks in clinched joints. An experimental investigation is conducted to determine the failure modes of clinched joints under cyclic loading at different load amplitudes with single-lap shear tests. In addition, numerical FEM simulations of clinching process and subsequent shear loading are performed to support the experimental investigations by analyzing the state of stresses at the location of failure. An attempt is made to explain the location of crack initiation in the experiments using evaluation variables such as contact shear stress and maximum principal stress."}],"language":[{"iso":"eng"}],"keyword":["Industrial and Manufacturing Engineering","Mechanical Engineering"],"issue":"2-3","year":"2022","date_created":"2022-12-05T21:12:10Z","publisher":"Springer Science and Business Media LLC","title":"Numerical and experimental identification of fatigue crack initiation sites in clinched joints","type":"journal_article","status":"public","user_id":"7850","_id":"34213","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"_id":"141","name":"TRR 285 – B02: TRR 285 - Subproject B02"}],"publication_identifier":{"issn":["0944-6524","1863-7353"]},"publication_status":"published","page":"305-313","intvolume":"        16","citation":{"short":"L. Ewenz, C.R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, M. Zimmermann, Production Engineering 16 (2022) 305–313.","mla":"Ewenz, L., et al. “Numerical and Experimental Identification of Fatigue Crack Initiation Sites in Clinched Joints.” <i>Production Engineering</i>, vol. 16, no. 2–3, Springer Science and Business Media LLC, 2022, pp. 305–13, doi:<a href=\"https://doi.org/10.1007/s11740-022-01124-z\">10.1007/s11740-022-01124-z</a>.","bibtex":"@article{Ewenz_Bielak_Otroshi_Bobbert_Meschut_Zimmermann_2022, title={Numerical and experimental identification of fatigue crack initiation sites in clinched joints}, volume={16}, DOI={<a href=\"https://doi.org/10.1007/s11740-022-01124-z\">10.1007/s11740-022-01124-z</a>}, number={2–3}, journal={Production Engineering}, publisher={Springer Science and Business Media LLC}, author={Ewenz, L. and Bielak, Christian Roman and Otroshi, Mortaza and Bobbert, Mathias and Meschut, Gerson and Zimmermann, M.}, year={2022}, pages={305–313} }","apa":"Ewenz, L., Bielak, C. R., Otroshi, M., Bobbert, M., Meschut, G., &#38; Zimmermann, M. (2022). Numerical and experimental identification of fatigue crack initiation sites in clinched joints. <i>Production Engineering</i>, <i>16</i>(2–3), 305–313. <a href=\"https://doi.org/10.1007/s11740-022-01124-z\">https://doi.org/10.1007/s11740-022-01124-z</a>","chicago":"Ewenz, L., Christian Roman Bielak, Mortaza Otroshi, Mathias Bobbert, Gerson Meschut, and M. Zimmermann. “Numerical and Experimental Identification of Fatigue Crack Initiation Sites in Clinched Joints.” <i>Production Engineering</i> 16, no. 2–3 (2022): 305–13. <a href=\"https://doi.org/10.1007/s11740-022-01124-z\">https://doi.org/10.1007/s11740-022-01124-z</a>.","ieee":"L. Ewenz, C. R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, and M. Zimmermann, “Numerical and experimental identification of fatigue crack initiation sites in clinched joints,” <i>Production Engineering</i>, vol. 16, no. 2–3, pp. 305–313, 2022, doi: <a href=\"https://doi.org/10.1007/s11740-022-01124-z\">10.1007/s11740-022-01124-z</a>.","ama":"Ewenz L, Bielak CR, Otroshi M, Bobbert M, Meschut G, Zimmermann M. Numerical and experimental identification of fatigue crack initiation sites in clinched joints. <i>Production Engineering</i>. 2022;16(2-3):305-313. doi:<a href=\"https://doi.org/10.1007/s11740-022-01124-z\">10.1007/s11740-022-01124-z</a>"},"volume":16,"author":[{"last_name":"Ewenz","full_name":"Ewenz, L.","first_name":"L."},{"id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak","first_name":"Christian Roman"},{"id":"71269","full_name":"Otroshi, Mortaza","orcid":"0000-0002-8652-9209","last_name":"Otroshi","first_name":"Mortaza"},{"id":"7850","full_name":"Bobbert, Mathias","last_name":"Bobbert","first_name":"Mathias"},{"first_name":"Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056","full_name":"Meschut, Gerson"},{"full_name":"Zimmermann, M.","last_name":"Zimmermann","first_name":"M."}],"date_updated":"2022-12-05T21:14:34Z","doi":"10.1007/s11740-022-01124-z"},{"publication_identifier":{"isbn":["9783031062117","9783031062124"],"issn":["2367-1181","2367-1696"]},"publication_status":"published","citation":{"bibtex":"@inbook{Köhler_Kupfer_Troschitz_Gude_2022, place={Cham}, title={Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes}, DOI={<a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">10.1007/978-3-031-06212-4_75</a>}, booktitle={The Minerals, Metals &#38; Materials Series}, publisher={Springer International Publishing}, author={Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}, year={2022} }","short":"D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: The Minerals, Metals &#38; Materials Series, Springer International Publishing, Cham, 2022.","mla":"Köhler, Daniel, et al. “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes.” <i>The Minerals, Metals &#38; Materials Series</i>, Springer International Publishing, 2022, doi:<a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">10.1007/978-3-031-06212-4_75</a>.","apa":"Köhler, D., Kupfer, R., Troschitz, J., &#38; Gude, M. (2022). Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes. In <i>The Minerals, Metals &#38; Materials Series</i>. Springer International Publishing. <a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">https://doi.org/10.1007/978-3-031-06212-4_75</a>","ieee":"D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes,” in <i>The Minerals, Metals &#38; Materials Series</i>, Cham: Springer International Publishing, 2022.","chicago":"Köhler, Daniel, Robert Kupfer, Juliane Troschitz, and Maik Gude. “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes.” In <i>The Minerals, Metals &#38; Materials Series</i>. Cham: Springer International Publishing, 2022. <a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">https://doi.org/10.1007/978-3-031-06212-4_75</a>.","ama":"Köhler D, Kupfer R, Troschitz J, Gude M. Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes. In: <i>The Minerals, Metals &#38; Materials Series</i>. Springer International Publishing; 2022. doi:<a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">10.1007/978-3-031-06212-4_75</a>"},"place":"Cham","year":"2022","author":[{"last_name":"Köhler","full_name":"Köhler, Daniel","first_name":"Daniel"},{"full_name":"Kupfer, Robert","last_name":"Kupfer","first_name":"Robert"},{"full_name":"Troschitz, Juliane","last_name":"Troschitz","first_name":"Juliane"},{"first_name":"Maik","last_name":"Gude","full_name":"Gude, Maik"}],"date_created":"2022-12-05T21:06:21Z","publisher":"Springer International Publishing","date_updated":"2022-12-05T21:11:47Z","doi":"10.1007/978-3-031-06212-4_75","title":"Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes","publication":"The Minerals, Metals & Materials Series","type":"book_chapter","status":"public","abstract":[{"text":"Force–displacement measurements and micrograph analyses are commonly used methods to validate numerical models of clinching processes. However, these methods often lead to resetting of elastic deformations and crack-\r\nclosing after unloading. In contrast, the in situ computed tomography (CT) can provide three-dimensional images of the clinch point under loading conditions. In this paper, the potential of the in situ investigation of a clinching process as validation method is analyzed. For the in situ testing, a tailored test set-up featuring a beryllium cylinder for load-bearing and clinching tools made from ultra-high-strength titanium and Si3N4 are used. In the experiments, the clinching of two aluminum sheets is interrupted at specific process steps in order to perform the CT scans. It is shown that in situ CT visualizes the inner geometry of the joint at high precision and that this method is suitable to validate numerical models.","lang":"eng"}],"user_id":"7850","_id":"34212","project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"148","name":"TRR 285 – C04: TRR 285 - Subproject C04"}],"language":[{"iso":"eng"}],"keyword":["Clinching","Non-destructive testing","Computed tomography","In situ CT"]},{"title":"Investigation of the influence of formed, non-rotationally symmetrical pin geometries and their effect on the joint quality of steel and aluminium sheets by direct pin pressing","doi":"10.1177/14644207221081408","publisher":"SAGE Publications","date_updated":"2022-12-05T21:41:09Z","volume":236,"date_created":"2022-12-05T21:39:38Z","author":[{"first_name":"David","last_name":"Römisch","full_name":"Römisch, David"},{"full_name":"Kraus, Martin","last_name":"Kraus","first_name":"Martin"},{"first_name":"Marion","full_name":"Merklein, Marion","last_name":"Merklein"}],"year":"2022","intvolume":"       236","page":"1187-1202","citation":{"mla":"Römisch, David, et al. “Investigation of the Influence of Formed, Non-Rotationally Symmetrical Pin Geometries and Their Effect on the Joint Quality of Steel and Aluminium Sheets by Direct Pin Pressing.” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, vol. 236, no. 6, SAGE Publications, 2022, pp. 1187–202, doi:<a href=\"https://doi.org/10.1177/14644207221081408\">10.1177/14644207221081408</a>.","short":"D. Römisch, M. Kraus, M. Merklein, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 236 (2022) 1187–1202.","bibtex":"@article{Römisch_Kraus_Merklein_2022, title={Investigation of the influence of formed, non-rotationally symmetrical pin geometries and their effect on the joint quality of steel and aluminium sheets by direct pin pressing}, volume={236}, DOI={<a href=\"https://doi.org/10.1177/14644207221081408\">10.1177/14644207221081408</a>}, number={6}, journal={Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}, publisher={SAGE Publications}, author={Römisch, David and Kraus, Martin and Merklein, Marion}, year={2022}, pages={1187–1202} }","apa":"Römisch, D., Kraus, M., &#38; Merklein, M. (2022). Investigation of the influence of formed, non-rotationally symmetrical pin geometries and their effect on the joint quality of steel and aluminium sheets by direct pin pressing. <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, <i>236</i>(6), 1187–1202. <a href=\"https://doi.org/10.1177/14644207221081408\">https://doi.org/10.1177/14644207221081408</a>","ieee":"D. Römisch, M. Kraus, and M. Merklein, “Investigation of the influence of formed, non-rotationally symmetrical pin geometries and their effect on the joint quality of steel and aluminium sheets by direct pin pressing,” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, vol. 236, no. 6, pp. 1187–1202, 2022, doi: <a href=\"https://doi.org/10.1177/14644207221081408\">10.1177/14644207221081408</a>.","chicago":"Römisch, David, Martin Kraus, and Marion Merklein. “Investigation of the Influence of Formed, Non-Rotationally Symmetrical Pin Geometries and Their Effect on the Joint Quality of Steel and Aluminium Sheets by Direct Pin Pressing.” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i> 236, no. 6 (2022): 1187–1202. <a href=\"https://doi.org/10.1177/14644207221081408\">https://doi.org/10.1177/14644207221081408</a>.","ama":"Römisch D, Kraus M, Merklein M. Investigation of the influence of formed, non-rotationally symmetrical pin geometries and their effect on the joint quality of steel and aluminium sheets by direct pin pressing. <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>. 2022;236(6):1187-1202. doi:<a href=\"https://doi.org/10.1177/14644207221081408\">10.1177/14644207221081408</a>"},"publication_identifier":{"issn":["1464-4207","2041-3076"]},"publication_status":"published","issue":"6","keyword":["Mechanical Engineering","General Materials Science"],"language":[{"iso":"eng"}],"_id":"34219","project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"_id":"133","name":"TRR 285 - C: TRR 285 - Project Area C"},{"_id":"145","name":"TRR 285 – C01: TRR 285 - Subproject C01"}],"user_id":"7850","abstract":[{"lang":"eng","text":"Resource-saving and sustainable production is becoming increasingly important regarding social, political and economic aspects, thus making the use of lightweight-construction technologies a current trend. For this reason, multi-material-systems made of high-strength steel and aluminium as well as metal and fibre-reinforced plastics gain in importance. However, different material properties, e.g. stiffness, thermal expansion coefficients or chemical incompatibilities, are challenging for conventional joining technologies. Joining by cold formed pin structures has shown to have high potential for joining multi-material-systems. These pins can be joined either by direct pin pressing into an unperforated joining partner or by caulking, where the pins are inserted through a pre-punched joining partner and the pin head is upset, resulting in a form-fit joint. Usually, cylindrical pins are used for joining. However, non-rotationally symmetrical pin geometries offer the possibility of introducing a predetermined breaking point or reinforcing a connection in the principal force direction. In this work, cylindrical pins as well as non-rotationally symmetrical pin geometries, such as polygonal and oval pin structures, are cold extruded from the sheet metal plane of an HCT590X+Z dual phase steel and joined in the next step with an EN AW-6014 aluminium using direct pin pressing. Since the formation of an undercut has an crucial influence on the joint strength, the investigations will be focused on the resulting joint geometry. In addition, the effect of different pin heights will be examined to analyse the joint formation at different levels of compression of the pin structures. Finally, the joints are evaluated regarding their joint strength in tensile shear tests and cross tension tests. Here the flow resistance of the geometry used as well as the pin height and thus the strain hardening of the pin base during the extrusion of the pins play a decisive role for the shear strength."}],"status":"public","publication":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","type":"journal_article"},{"year":"2022","intvolume":"        12","citation":{"mla":"Popp, Julian, et al. “Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures.” <i>Applied Sciences</i>, vol. 12, no. 10, 4962, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/app12104962\">10.3390/app12104962</a>.","bibtex":"@article{Popp_Römisch_Merklein_Drummer_2022, title={Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures}, volume={12}, DOI={<a href=\"https://doi.org/10.3390/app12104962\">10.3390/app12104962</a>}, number={104962}, journal={Applied Sciences}, publisher={MDPI AG}, author={Popp, Julian and Römisch, David and Merklein, Marion and Drummer, Dietmar}, year={2022} }","short":"J. Popp, D. Römisch, M. Merklein, D. Drummer, Applied Sciences 12 (2022).","apa":"Popp, J., Römisch, D., Merklein, M., &#38; Drummer, D. (2022). Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures. <i>Applied Sciences</i>, <i>12</i>(10), Article 4962. <a href=\"https://doi.org/10.3390/app12104962\">https://doi.org/10.3390/app12104962</a>","ama":"Popp J, Römisch D, Merklein M, Drummer D. Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures. <i>Applied Sciences</i>. 2022;12(10). doi:<a href=\"https://doi.org/10.3390/app12104962\">10.3390/app12104962</a>","chicago":"Popp, Julian, David Römisch, Marion Merklein, and Dietmar Drummer. “Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures.” <i>Applied Sciences</i> 12, no. 10 (2022). <a href=\"https://doi.org/10.3390/app12104962\">https://doi.org/10.3390/app12104962</a>.","ieee":"J. Popp, D. Römisch, M. Merklein, and D. Drummer, “Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures,” <i>Applied Sciences</i>, vol. 12, no. 10, Art. no. 4962, 2022, doi: <a href=\"https://doi.org/10.3390/app12104962\">10.3390/app12104962</a>."},"publication_identifier":{"issn":["2076-3417"]},"publication_status":"published","issue":"10","title":"Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures","doi":"10.3390/app12104962","publisher":"MDPI AG","date_updated":"2022-12-05T21:49:30Z","volume":12,"date_created":"2022-12-05T21:48:01Z","author":[{"full_name":"Popp, Julian","last_name":"Popp","first_name":"Julian"},{"last_name":"Römisch","full_name":"Römisch, David","first_name":"David"},{"first_name":"Marion","full_name":"Merklein, Marion","last_name":"Merklein"},{"last_name":"Drummer","full_name":"Drummer, Dietmar","first_name":"Dietmar"}],"abstract":[{"lang":"eng","text":"In this study, quasi-unidirectional continuous fiber reinforced thermoplastics (CFRTs) are joined with metal sheets via cold formed cylindrical, elliptical and polygonal pin structures which are directly pressed into the CFRT component after local infrared heating. In comparison to already available studies, the unique novelty is the use of non-rotational symmetric pin structures for the CFRT/metal hybrid joining. Thus, a variation in the fiber orientation in the CFRT component as well as a variation in the non-rotational symmetric pins’ orientation in relation to the sample orientation is conducted. The created samples are consequently mechanically tested via single lap shear experiments in a quasi-static state. Finally, the failure behavior of the single lap shear samples is investigated with the help of microscopic images and detailed photographs. In the single lap shear tests, it could be shown that non-rotational symmetric pin structures lead to an increase in maximum testing forces of up to 74% when compared to cylindrical pins. However, when normalized to the pin foot print related joint strength, only one polygonal pin variation showed increased joint strength in comparison to cylindrical pin structures. The investigation of the failure behavior showed two distinct failure modes. The first failure mode was failure of the CFRT component due to an exceedance of the maximum bearing strength of the pin-hole leading to significant damage in the CFRT component. The second failure mode was pin-deflection due to the applied testing load and a subsequent pin extraction from the CFRT component resulting in significantly less visible damage in the CFRT component. Generally, CFRT failure is more likely with a fiber orientation of 0° in relation to the load direction while pin extraction typically occurs with a fiber orientation of 90°. It is assumed that for future investigations, pin structures with an undercutting shape that creates an interlocking joint could counteract the tendency for pin-extraction and consequently lead to increased maximum joint strengths."}],"status":"public","publication":"Applied Sciences","type":"journal_article","keyword":["Fluid Flow and Transfer Processes","Computer Science Applications","Process Chemistry and Technology","General Engineering","Instrumentation","General Materials Science"],"article_number":"4962","language":[{"iso":"eng"}],"_id":"34223","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"145","name":"TRR 285 – C01: TRR 285 - Subproject C01"}],"user_id":"7850"},{"publisher":"MDPI AG","date_updated":"2022-12-05T21:54:09Z","volume":15,"author":[{"first_name":"Juliane","full_name":"Troschitz, Juliane","last_name":"Troschitz"},{"first_name":"Benjamin","last_name":"Gröger","full_name":"Gröger, Benjamin"},{"first_name":"Veit","full_name":"Würfel, Veit","last_name":"Würfel"},{"last_name":"Kupfer","full_name":"Kupfer, Robert","first_name":"Robert"},{"first_name":"Maik","full_name":"Gude, Maik","last_name":"Gude"}],"date_created":"2022-12-05T21:51:47Z","title":"Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation","doi":"10.3390/ma15155454","publication_identifier":{"issn":["1996-1944"]},"publication_status":"published","issue":"15","year":"2022","intvolume":"        15","citation":{"ama":"Troschitz J, Gröger B, Würfel V, Kupfer R, Gude M. Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation. <i>Materials</i>. 2022;15(15). doi:<a href=\"https://doi.org/10.3390/ma15155454\">10.3390/ma15155454</a>","ieee":"J. Troschitz, B. Gröger, V. Würfel, R. Kupfer, and M. Gude, “Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation,” <i>Materials</i>, vol. 15, no. 15, Art. no. 5454, 2022, doi: <a href=\"https://doi.org/10.3390/ma15155454\">10.3390/ma15155454</a>.","chicago":"Troschitz, Juliane, Benjamin Gröger, Veit Würfel, Robert Kupfer, and Maik Gude. “Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation.” <i>Materials</i> 15, no. 15 (2022). <a href=\"https://doi.org/10.3390/ma15155454\">https://doi.org/10.3390/ma15155454</a>.","apa":"Troschitz, J., Gröger, B., Würfel, V., Kupfer, R., &#38; Gude, M. (2022). Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation. <i>Materials</i>, <i>15</i>(15), Article 5454. <a href=\"https://doi.org/10.3390/ma15155454\">https://doi.org/10.3390/ma15155454</a>","bibtex":"@article{Troschitz_Gröger_Würfel_Kupfer_Gude_2022, title={Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation}, volume={15}, DOI={<a href=\"https://doi.org/10.3390/ma15155454\">10.3390/ma15155454</a>}, number={155454}, journal={Materials}, publisher={MDPI AG}, author={Troschitz, Juliane and Gröger, Benjamin and Würfel, Veit and Kupfer, Robert and Gude, Maik}, year={2022} }","short":"J. Troschitz, B. Gröger, V. Würfel, R. Kupfer, M. Gude, Materials 15 (2022).","mla":"Troschitz, Juliane, et al. “Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation.” <i>Materials</i>, vol. 15, no. 15, 5454, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/ma15155454\">10.3390/ma15155454</a>."},"_id":"34225","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 – A03: TRR 285 - Subproject A03","_id":"137"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285 – C04: TRR 285 - Subproject C04","_id":"148"}],"user_id":"7850","article_number":"5454","language":[{"iso":"eng"}],"publication":"Materials","type":"journal_article","abstract":[{"text":"Thermoplastic composites (TPCs) are predestined for use in lightweight structures, especially for high-volume applications. In many cases, joining is a key factor for the successful application of TPCs in multi-material systems. Many joining processes for this material group are based on warm forming the joining zone. This results in a change of the local material structure characterised by modified fibre paths, as well as varying fibre contents, which significantly influences the load-bearing behaviour. During the forming process, many different phenomena occur simultaneously at different scales. In this paper, the deformation modes and flow mechanisms of TPCs during forming described in the literature are first analysed. Based on this, three different joining processes are investigated: embedding of inserts, moulding of contour joints, and hotclinching. In order to identify the phenomena occurring in each process and to describe the characteristic resulting material structure in the joining zones, micrographs as well as computed tomography (CT) analyses are performed for both individual process stages and final joining zones.","lang":"eng"}],"status":"public"}]