[{"status":"public","page":"429-438","_id":"66762","publisher":"Aisthesis Verlag","user_id":"363","volume":22,"editor":[{"first_name":"Stefan","last_name":"Höppner","full_name":"Höppner, Stefan"},{"full_name":"Maxwill, Arnold","last_name":"Maxwill","first_name":"Arnold"}],"citation":{"short":"R. Morrien, in: S. Höppner, A. Maxwill, Literaturkommission Westfalen des Landschaftsverbandes Westfalen-Lippe (Eds.), Literatur in Westfalen. Beiträge zur Forschung 22, Aisthesis Verlag, Bielefeld, 2026, pp. 429–438.","chicago":"Morrien, Rita. “‘Future Fresko’ - Charlotte Kraffts Münsterland-Blog MOMUMENT als dystopische Heimatliteratur.” In Literatur in Westfalen. Beiträge zur Forschung 22, edited by Stefan Höppner, Arnold Maxwill, and Literaturkommission Westfalen des Landschaftsverbandes Westfalen-Lippe, 22:429–38. Literatur in Westfalen. Bielefeld: Aisthesis Verlag, 2026.","ieee":"R. Morrien, “‘Future Fresko’ - Charlotte Kraffts Münsterland-Blog MOMUMENT als dystopische Heimatliteratur,” in Literatur in Westfalen. Beiträge zur Forschung 22, vol. 22, S. Höppner, A. Maxwill, and Literaturkommission Westfalen des Landschaftsverbandes Westfalen-Lippe, Eds. Bielefeld: Aisthesis Verlag, 2026, pp. 429–438.","apa":"Morrien, R. (2026). “Future Fresko” - Charlotte Kraffts Münsterland-Blog MOMUMENT als dystopische Heimatliteratur. In S. Höppner, A. Maxwill, & Literaturkommission Westfalen des Landschaftsverbandes Westfalen-Lippe (Eds.), Literatur in Westfalen. Beiträge zur Forschung 22 (Vol. 22, pp. 429–438). Aisthesis Verlag.","bibtex":"@inbook{Morrien_2026, place={Bielefeld}, series={Literatur in Westfalen}, title={“Future Fresko” - Charlotte Kraffts Münsterland-Blog MOMUMENT als dystopische Heimatliteratur}, volume={22}, booktitle={Literatur in Westfalen. Beiträge zur Forschung 22}, publisher={Aisthesis Verlag}, author={Morrien, Rita}, editor={Höppner, Stefan and Maxwill, Arnold and Literaturkommission Westfalen des Landschaftsverbandes Westfalen-Lippe}, year={2026}, pages={429–438}, collection={Literatur in Westfalen} }","ama":"Morrien R. “Future Fresko” - Charlotte Kraffts Münsterland-Blog MOMUMENT als dystopische Heimatliteratur. In: Höppner S, Maxwill A, Literaturkommission Westfalen des Landschaftsverbandes Westfalen-Lippe, eds. Literatur in Westfalen. Beiträge zur Forschung 22. Vol 22. Literatur in Westfalen. Aisthesis Verlag; 2026:429-438.","mla":"Morrien, Rita. “‘Future Fresko’ - Charlotte Kraffts Münsterland-Blog MOMUMENT als dystopische Heimatliteratur.” Literatur in Westfalen. Beiträge zur Forschung 22, edited by Stefan Höppner et al., vol. 22, Aisthesis Verlag, 2026, pp. 429–38."},"quality_controlled":"1","place":"Bielefeld","title":"\"Future Fresko\" - Charlotte Kraffts Münsterland-Blog MOMUMENT als dystopische Heimatliteratur","year":"2026","publication_identifier":{"isbn":["978-3-8498-2149-4"]},"author":[{"full_name":"Morrien, Rita","first_name":"Rita","last_name":"Morrien","id":"363"}],"corporate_editor":["Literaturkommission Westfalen des Landschaftsverbandes Westfalen-Lippe"],"publication_status":"published","date_updated":"2026-08-20T11:48:47Z","intvolume":" 22","language":[{"iso":"ger"}],"series_title":"Literatur in Westfalen","publication":"Literatur in Westfalen. Beiträge zur Forschung 22","date_created":"2026-08-20T11:48:37Z","type":"book_chapter"},{"quality_controlled":"1","citation":{"mla":"Lutters, Nicole, et al. “Electrification of Separation Column with 3D-Printed Ceramic Packings.” Book of Full Paper 13th International Conference on Distillation & Absorption, 2026, pp. 709–14, doi:10.83455/2026DISTILLATIONADSORPTION.","bibtex":"@inproceedings{Lutters_Riese_Boz_2026, title={Electrification of Separation Column with 3D-Printed Ceramic Packings}, DOI={10.83455/2026DISTILLATIONADSORPTION}, booktitle={Book of Full Paper 13th International Conference on Distillation & Absorption}, author={Lutters, Nicole and Riese, Julia and Boz, Özgün Alkim}, year={2026}, pages={709–714} }","ama":"Lutters N, Riese J, Boz ÖA. Electrification of Separation Column with 3D-Printed Ceramic Packings. In: Book of Full Paper 13th International Conference on Distillation & Absorption. ; 2026:709-714. doi:10.83455/2026DISTILLATIONADSORPTION","ieee":"N. Lutters, J. Riese, and Ö. A. Boz, “Electrification of Separation Column with 3D-Printed Ceramic Packings,” in Book of Full Paper 13th International Conference on Distillation & Absorption, 2026, pp. 709–714, doi: 10.83455/2026DISTILLATIONADSORPTION.","apa":"Lutters, N., Riese, J., & Boz, Ö. A. (2026). Electrification of Separation Column with 3D-Printed Ceramic Packings. Book of Full Paper 13th International Conference on Distillation & Absorption, 709–714. https://doi.org/10.83455/2026DISTILLATIONADSORPTION","chicago":"Lutters, Nicole, Julia Riese, and Özgün Alkim Boz. “Electrification of Separation Column with 3D-Printed Ceramic Packings.” In Book of Full Paper 13th International Conference on Distillation & Absorption, 709–14, 2026. https://doi.org/10.83455/2026DISTILLATIONADSORPTION.","short":"N. Lutters, J. Riese, Ö.A. Boz, in: Book of Full Paper 13th International Conference on Distillation & Absorption, 2026, pp. 709–714."},"publication":"Book of Full Paper 13th International Conference on Distillation & Absorption","department":[{"_id":"831"}],"type":"conference","date_created":"2026-09-04T07:36:15Z","date_updated":"2026-09-04T07:36:19Z","author":[{"id":"22006","full_name":"Lutters, Nicole","orcid":"0009-0006-7828-8448","first_name":"Nicole","last_name":"Lutters"},{"id":"101499","full_name":"Riese, Julia","first_name":"Julia","orcid":"0000-0002-3053-0534","last_name":"Riese"},{"full_name":"Boz, Özgün Alkim","first_name":"Özgün Alkim","last_name":"Boz","id":"116497"}],"title":"Electrification of Separation Column with 3D-Printed Ceramic Packings","status":"public","year":"2026","doi":"10.83455/2026DISTILLATIONADSORPTION","user_id":"101499","_id":"66955","language":[{"iso":"eng"}],"page":"709-714"},{"date_created":"2026-09-07T12:52:16Z","type":"conference","department":[{"_id":"151"}],"publication":"PHM Society European Conference","issue":"1","related_material":{"link":[{"url":"https://papers.phmsociety.org/index.php/phme/article/view/4952","relation":"confirmation"}]},"abstract":[{"text":"In order to make rail transportation more attractive compared to motorized private transport, intelligent solutions are required across the entire mobility chain. Train stations, as places of connection and transfer, offer the greatest potential in this context. Thus, the deployment of autonomous service robots at train stations offers a wide range of possibilities for supporting passengers on their journeys by rail, for example, by providing information, accompanying them to the next link in the mobility chain, or transporting their luggage. Since such robots are battery-powered, one challenge is to carefully plan activities based on the remaining battery capacity. Therefore, the aim of this work is to predict battery usage and, in turn, battery state, in order to inform passengers, and to enable intelligent planning of its usage.In this work, realistic operational conditions of a service robot are systematically assessed through measurements on the service robot itself and through passenger surveys at a train station. The estimated operational conditions are experimentally replicated to simulate the heterogeneous use of the battery pack, while acquiring condition monitoring data throughout its use. The battery pack is modeled based on the single particle model, which can robustly predict the battery state by simulating its usage considering past operational conditions. The approach is validated using experimental data obtained from simulating realistic usage. On the one hand, additional battery packs are employed, and on the other hand, the load is varied. The advantage of this approach lies in the ability to account for future changes, such as higher loads than anticipated, to provide robust predictions.This enables the intelligent use of service robots, offering passengers an improved service experience at train stations.","lang":"eng"}],"main_file_link":[{"open_access":"1","url":"https://papers.phmsociety.org/index.php/phme/article/view/4952"}],"language":[{"iso":"eng"}],"doi":"10.36001/phme.2026.v9i1.4952","year":"2026","title":"Prediction and simulation of battery pack usage for intelligent service robot deployment at a train station","publication_identifier":{"issn":["2325-016X","2325-016X"]},"author":[{"full_name":"Löwen, Alexander","last_name":"Löwen","first_name":"Alexander","id":"47233"},{"last_name":"Aleman-Gallegos","first_name":"Enrique","full_name":"Aleman-Gallegos, Enrique"},{"id":"9557","full_name":"Aimiyekagbon, Osarenren","last_name":"Aimiyekagbon","first_name":"Osarenren"},{"first_name":"Sven","last_name":"Wachsmuth","full_name":"Wachsmuth, Sven"},{"full_name":"Sextro, Walter","first_name":"Walter","last_name":"Sextro","id":"21220"}],"publication_status":"published","date_updated":"2026-09-07T13:01:58Z","intvolume":" 9","place":"Oslo","oa":"1","popular_science":"1","citation":{"short":"A. Löwen, E. Aleman-Gallegos, O. Aimiyekagbon, S. Wachsmuth, W. Sextro, in: PHM Society European Conference, PHM Society, Oslo, 2026, pp. 1–10.","chicago":"Löwen, Alexander, Enrique Aleman-Gallegos, Osarenren Aimiyekagbon, Sven Wachsmuth, and Walter Sextro. “Prediction and Simulation of Battery Pack Usage for Intelligent Service Robot Deployment at a Train Station.” In PHM Society European Conference, 9:1–10. Oslo: PHM Society, 2026. https://doi.org/10.36001/phme.2026.v9i1.4952.","apa":"Löwen, A., Aleman-Gallegos, E., Aimiyekagbon, O., Wachsmuth, S., & Sextro, W. (2026). Prediction and simulation of battery pack usage for intelligent service robot deployment at a train station. PHM Society European Conference, 9(1), 1–10. https://doi.org/10.36001/phme.2026.v9i1.4952","ieee":"A. Löwen, E. Aleman-Gallegos, O. Aimiyekagbon, S. Wachsmuth, and W. Sextro, “Prediction and simulation of battery pack usage for intelligent service robot deployment at a train station,” in PHM Society European Conference, Oslo, 2026, vol. 9, no. 1, pp. 1–10, doi: 10.36001/phme.2026.v9i1.4952.","ama":"Löwen A, Aleman-Gallegos E, Aimiyekagbon O, Wachsmuth S, Sextro W. Prediction and simulation of battery pack usage for intelligent service robot deployment at a train station. In: PHM Society European Conference. Vol 9. PHM Society; 2026:1-10. doi:10.36001/phme.2026.v9i1.4952","bibtex":"@inproceedings{Löwen_Aleman-Gallegos_Aimiyekagbon_Wachsmuth_Sextro_2026, place={Oslo}, title={Prediction and simulation of battery pack usage for intelligent service robot deployment at a train station}, volume={9}, DOI={10.36001/phme.2026.v9i1.4952}, number={1}, booktitle={PHM Society European Conference}, publisher={PHM Society}, author={Löwen, Alexander and Aleman-Gallegos, Enrique and Aimiyekagbon, Osarenren and Wachsmuth, Sven and Sextro, Walter}, year={2026}, pages={1–10} }","mla":"Löwen, Alexander, et al. “Prediction and Simulation of Battery Pack Usage for Intelligent Service Robot Deployment at a Train Station.” PHM Society European Conference, vol. 9, no. 1, PHM Society, 2026, pp. 1–10, doi:10.36001/phme.2026.v9i1.4952."},"quality_controlled":"1","page":"1-10","publisher":"PHM Society","_id":"67019","user_id":"47233","volume":9,"status":"public","conference":{"end_date":"2026-07-10","location":"Oslo","start_date":"2026-07-08"}},{"date_created":"2025-01-30T14:26:50Z","type":"journal_article","department":[{"_id":"157"}],"publication":"Welding in the World","citation":{"ama":"Wippermann J, Meschut G. Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber contents. Welding in the World. Published online 2025. doi:10.1007/s40194-025-01928-4","bibtex":"@article{Wippermann_Meschut_2025, title={Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber contents}, DOI={10.1007/s40194-025-01928-4}, journal={Welding in the World}, publisher={Springer Science and Business Media LLC}, author={Wippermann, Jan and Meschut, Gerson}, year={2025} }","mla":"Wippermann, Jan, and Gerson Meschut. “Numerical Modeling of Clamp Load Relaxation of Plastic Nuts under Varying Moisture and Fiber Contents.” Welding in the World, Springer Science and Business Media LLC, 2025, doi:10.1007/s40194-025-01928-4.","short":"J. Wippermann, G. Meschut, Welding in the World (2025).","chicago":"Wippermann, Jan, and Gerson Meschut. “Numerical Modeling of Clamp Load Relaxation of Plastic Nuts under Varying Moisture and Fiber Contents.” Welding in the World, 2025. https://doi.org/10.1007/s40194-025-01928-4.","apa":"Wippermann, J., & Meschut, G. (2025). Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber contents. Welding in the World. https://doi.org/10.1007/s40194-025-01928-4","ieee":"J. Wippermann and G. Meschut, “Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber contents,” Welding in the World, 2025, doi: 10.1007/s40194-025-01928-4."},"abstract":[{"lang":"eng","text":"This study presents a numerical approach using a 3D finite element model to quantify the remaining clamp load of a plastic nut joint after a specific time. The viscoelastic relaxation of a thermoplastic nut, which is predominantly screwed on a welding stud, is described by a material card using Prony Series. Prony Series are derived from experimental dynamical mechanical analysis with different moisture and fiber contents of the thermoplastic. Since plastic nuts usually do not have preformed threads, the increased temperatures and resulting stresses from the thread-forming process are considered in the simulation. An FE model is created and verified by substrate stress relaxation tests. Experimental clamp load measurements with miniature compression load cells verify the clamp load prediction and show a good agreement. The developed model is used to analyze the clamp load distribution within the threads and reveals an almost even distribution within the threads."}],"quality_controlled":"1","language":[{"iso":"eng"}],"_id":"58438","publisher":"Springer Science and Business Media LLC","doi":"10.1007/s40194-025-01928-4","user_id":"55686","title":"Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber contents","status":"public","year":"2025","author":[{"first_name":"Jan","last_name":"Wippermann","full_name":"Wippermann, Jan"},{"last_name":"Meschut","first_name":"Gerson","full_name":"Meschut, Gerson"}],"publication_identifier":{"issn":["0043-2288","1878-6669"]},"date_updated":"2025-01-30T14:40:06Z","publication_status":"published"},{"abstract":[{"text":"A coupled finite plasticity ductile damage and failure model is proposed for the finite element simulation of clinch joining, which incorporates stress-state dependency and regularisation by gradient-enhancement of the damage variable. Ductile damage is determined based on a failure indicator governed by a failure surface in stress space. The latter is exemplary chosen as a combination of the Hosford–Coulomb and Cockcroft–Latham–Oh failure criteria for the high and low stress triaxiality range, respectively, to cover the wide stress range encountered in forming. Damage is coupled to elasto-plasticity to capture the damage-induced degradation of the stiffness and flow stress. This affects the material behaviour up to failure, thereby realistically altering the stress state. Consequently, especially for highly ductile materials, where substantial necking and localisation precede material fracture, the failure prediction is enhanced. The resulting stress softening is regularised by gradient-enhancement to obtain mesh-objective results. The analysis of a modified punch test experiment emphasises how the damage-induced softening effect can strongly alter the actual stress state towards failure. Moreover, the impact of successful regularisation is shown, and the applicability of the damage and failure model to clinch joining is proven.","lang":"eng"}],"publication":"Journal of the Mechanics and Physics of Solids","keyword":["Finite plasticity","Ductile damage","Gradient-enhancement","Stress-state dependency","Failure"],"type":"journal_article","date_created":"2025-01-31T17:04:12Z","article_type":"original","intvolume":" 196","publication_status":"published","date_updated":"2025-01-31T17:06:22Z","publication_identifier":{"issn":["0022-5096"]},"author":[{"full_name":"Friedlein, Johannes","last_name":"Friedlein","first_name":"Johannes"},{"full_name":"Mergheim, Julia","first_name":"Julia","last_name":"Mergheim"},{"first_name":"Paul","last_name":"Steinmann","full_name":"Steinmann, Paul"}],"title":"Modelling of stress-state-dependent ductile damage with gradient-enhancement exemplified for clinch joining","year":"2025","doi":"10.1016/j.jmps.2025.106026","language":[{"iso":"eng"}],"article_number":"106026","project":[{"_id":"130","grant_number":"418701707","name":"TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A05: TRR 285 - Subproject A05","_id":"139"}],"citation":{"bibtex":"@article{Friedlein_Mergheim_Steinmann_2025, title={Modelling of stress-state-dependent ductile damage with gradient-enhancement exemplified for clinch joining}, volume={196}, DOI={10.1016/j.jmps.2025.106026}, number={106026}, journal={Journal of the Mechanics and Physics of Solids}, publisher={Elsevier BV}, author={Friedlein, Johannes and Mergheim, Julia and Steinmann, Paul}, year={2025} }","ama":"Friedlein J, Mergheim J, Steinmann P. Modelling of stress-state-dependent ductile damage with gradient-enhancement exemplified for clinch joining. Journal of the Mechanics and Physics of Solids. 2025;196. doi:10.1016/j.jmps.2025.106026","short":"J. Friedlein, J. Mergheim, P. Steinmann, Journal of the Mechanics and Physics of Solids 196 (2025).","chicago":"Friedlein, Johannes, Julia Mergheim, and Paul Steinmann. “Modelling of Stress-State-Dependent Ductile Damage with Gradient-Enhancement Exemplified for Clinch Joining.” Journal of the Mechanics and Physics of Solids 196 (2025). https://doi.org/10.1016/j.jmps.2025.106026.","ieee":"J. Friedlein, J. Mergheim, and P. Steinmann, “Modelling of stress-state-dependent ductile damage with gradient-enhancement exemplified for clinch joining,” Journal of the Mechanics and Physics of Solids, vol. 196, Art. no. 106026, 2025, doi: 10.1016/j.jmps.2025.106026.","mla":"Friedlein, Johannes, et al. “Modelling of Stress-State-Dependent Ductile Damage with Gradient-Enhancement Exemplified for Clinch Joining.” Journal of the Mechanics and Physics of Solids, vol. 196, 106026, Elsevier BV, 2025, doi:10.1016/j.jmps.2025.106026.","apa":"Friedlein, J., Mergheim, J., & Steinmann, P. (2025). Modelling of stress-state-dependent ductile damage with gradient-enhancement exemplified for clinch joining. Journal of the Mechanics and Physics of Solids, 196, Article 106026. https://doi.org/10.1016/j.jmps.2025.106026"},"status":"public","volume":196,"user_id":"84990","publisher":"Elsevier BV","_id":"58492"},{"citation":{"ieee":"R. D. Müller, D. Büchel, and J. Baumeister, “Validation, Reliability, and Usefulness of the Functional Agility Square Test [FAST],” Journal of Functional Morphology and Kinesiology, vol. 10, no. 2, Art. no. 126, 2025, doi: 10.3390/jfmk10020126.","apa":"Müller, R. D., Büchel, D., & Baumeister, J. (2025). Validation, Reliability, and Usefulness of the Functional Agility Square Test [FAST]. Journal of Functional Morphology and Kinesiology, 10(2), Article 126. https://doi.org/10.3390/jfmk10020126","short":"R.D. Müller, D. Büchel, J. Baumeister, Journal of Functional Morphology and Kinesiology 10 (2025).","chicago":"Müller, Romina Desiree, Daniel Büchel, and Jochen Baumeister. “Validation, Reliability, and Usefulness of the Functional Agility Square Test [FAST].” Journal of Functional Morphology and Kinesiology 10, no. 2 (2025). https://doi.org/10.3390/jfmk10020126.","mla":"Müller, Romina Desiree, et al. “Validation, Reliability, and Usefulness of the Functional Agility Square Test [FAST].” Journal of Functional Morphology and Kinesiology, vol. 10, no. 2, 126, MDPI AG, 2025, doi:10.3390/jfmk10020126.","bibtex":"@article{Müller_Büchel_Baumeister_2025, title={Validation, Reliability, and Usefulness of the Functional Agility Square Test [FAST]}, volume={10}, DOI={10.3390/jfmk10020126}, number={2126}, journal={Journal of Functional Morphology and Kinesiology}, publisher={MDPI AG}, author={Müller, Romina Desiree and Büchel, Daniel and Baumeister, Jochen}, year={2025} }","ama":"Müller RD, Büchel D, Baumeister J. Validation, Reliability, and Usefulness of the Functional Agility Square Test [FAST]. Journal of Functional Morphology and Kinesiology. 2025;10(2). doi:10.3390/jfmk10020126"},"status":"public","user_id":"62569","volume":10,"publisher":"MDPI AG","_id":"59599","abstract":[{"lang":"eng","text":"Background: Agility is crucial in game sports, requiring both motor and cognitive skills. Athletes must perceive and process information to adapt movements, yet traditional agility tests often lack cognitive and multidirectional demands. Additionally, modern test systems are mostly stationary. This study evaluated the novel and portable “Functional Agility Square Test” (FAST) for validity, reliability, and usefulness. Methods: To assess discriminant validity, 22 game sports (GS) and 22 non-game sports (NGS) athletes participated in one session. Test–retest reliability was examined with 36 GS athletes (20 female) across three sessions. Participants performed cognitive (FAST_COG), preplanned (FAST_MOT), and randomized (FAST_SAT) reactive change-of-direction tasks, each repeated three times per session. Results: Results showed significantly lower response times (RTs) in GS compared to NGS (p < 0.05). Mean RTs indicated moderate relative reliability (ICC 0.50–0.74), while medians showed moderate to good reliability (ICC 0.59–0.83). Usefulness was evident from the first session (FAST_MOT) or from the third session (FAST_SAT) based on median RTs. Conclusions: Thus, the FAST seems to be valid, reliable, and sensitive for GS-based agility assessment. Its portable setup enables ecologically valid field testing. Future research should further increase task complexity to better simulate game conditions."}],"publication":"Journal of Functional Morphology and Kinesiology","issue":"2","type":"journal_article","date_created":"2025-04-16T09:15:59Z","date_updated":"2025-04-16T09:19:31Z","publication_status":"published","intvolume":" 10","year":"2025","title":"Validation, Reliability, and Usefulness of the Functional Agility Square Test [FAST]","publication_identifier":{"issn":["2411-5142"]},"author":[{"first_name":"Romina Desiree","last_name":"Müller","full_name":"Müller, Romina Desiree","id":"62569"},{"id":"41088","last_name":"Büchel","first_name":"Daniel","full_name":"Büchel, Daniel"},{"first_name":"Jochen","orcid":"0000-0003-2683-5826","last_name":"Baumeister","full_name":"Baumeister, Jochen","id":"46"}],"doi":"10.3390/jfmk10020126","article_number":"126","language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"article_number":"1517","main_file_link":[{"url":"https://www.mdpi.com/2079-9292/14/8/1517"}],"doi":"10.3390/electronics14081517","publication_identifier":{"issn":["2079-9292"]},"author":[{"last_name":"Unruh","first_name":"Roland","full_name":"Unruh, Roland","id":"34289"},{"id":"66","full_name":"Böcker, Joachim","last_name":"Böcker","orcid":"0000-0002-8480-7295","first_name":"Joachim"},{"id":"71291","first_name":"Frank","last_name":"Schafmeister","full_name":"Schafmeister, Frank"}],"title":"Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple","year":"2025","intvolume":" 14","publication_status":"published","date_updated":"2025-05-05T12:34:00Z","date_created":"2025-05-05T12:27:39Z","department":[{"_id":"52"}],"keyword":["adaptive DC-link voltage","cascaded H-bridge","resonant operation","Full-Bridge Converter","loss minimization","LLC Resonant Converter","peak capacitor voltage reduction"],"type":"journal_article","issue":"8","publication":"Electronics","abstract":[{"lang":"eng","text":"The LLC converter achieves the highest efficiency in resonant operation. Conventionally, the input DC-link voltage is controlled to operate the LLC converter at resonance for the given operating point. However, the DC-link capacitor voltage shows a low-frequency voltage ripple (typically the second harmonic of grid frequency) in cascaded converters so that the LLC has to adapt its switching frequency within the grid period. Conventionally, the LLC converter operates 50% of the time above the resonant frequency of 40 kHz and 50% below resonance. Both operating conditions cause additional losses. However, experimental measurements indicate that the below-resonance operation causes significantly higher losses than above-resonance operation due to much higher primary and secondary transformer currents. It is better to increase the DC-link voltage by 30% of the peak-to-peak low-frequency voltage ripple to mostly avoid below-resonance operation (i.e., from 650 V to 680 V in this case). With the proposed control, the LLC converter operates about 75% of time over resonance and only 25% of time below resonance. The overall efficiency increases from 97.66% to 97.7% for the average operating point with an 80% load current. This corresponds to a 2% total loss reduction. Finally, the peak resonance capacitor voltage decreases from 910 V to 790 V (−13%)."}],"publisher":"MDPI AG","_id":"59805","volume":14,"user_id":"34289","status":"public","citation":{"ama":"Unruh R, Böcker J, Schafmeister F. Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple. Electronics. 2025;14(8). doi:10.3390/electronics14081517","bibtex":"@article{Unruh_Böcker_Schafmeister_2025, title={Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple}, volume={14}, DOI={10.3390/electronics14081517}, number={81517}, journal={Electronics}, publisher={MDPI AG}, author={Unruh, Roland and Böcker, Joachim and Schafmeister, Frank}, year={2025} }","mla":"Unruh, Roland, et al. “Adaptive DC-Link Voltage Control for 22 KW, 40 KHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple.” Electronics, vol. 14, no. 8, 1517, MDPI AG, 2025, doi:10.3390/electronics14081517.","short":"R. Unruh, J. Böcker, F. Schafmeister, Electronics 14 (2025).","chicago":"Unruh, Roland, Joachim Böcker, and Frank Schafmeister. “Adaptive DC-Link Voltage Control for 22 KW, 40 KHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple.” Electronics 14, no. 8 (2025). https://doi.org/10.3390/electronics14081517.","apa":"Unruh, R., Böcker, J., & Schafmeister, F. (2025). Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple. Electronics, 14(8), Article 1517. https://doi.org/10.3390/electronics14081517","ieee":"R. Unruh, J. Böcker, and F. Schafmeister, “Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple,” Electronics, vol. 14, no. 8, Art. no. 1517, 2025, doi: 10.3390/electronics14081517."}},{"date_created":"2025-05-13T06:51:37Z","type":"conference","department":[{"_id":"157"}],"publication":"Materials Research Proceedings","abstract":[{"text":"Abstract. Clinching is a conventional mechanical joining process used in Multi-Material Design in the automotive sector. To receive the desired geometrical characteristics in clinch joints, correct process design is required. To reduce the cost of finding fitting process parameters, numerical simulation of the joining process can be used to predict the geometrical characteristics, such as interlock, instead of an experimental approach. These numerical simulation models consume computational resources and time. In this paper machine learning is used to find correlations between features of the joining process and geometrical characteristics in the joint. This serves the purpose of predicting the joint’s target values more resource-efficiently. Modelling with machine learning requires a structured dataset with sufficient parameter variation. To create this data base the following procedure was used. For joining partners, a HC340LA steel alloy with 2 mm material thickness was used punch-sided and an EN AW 5182 aluminum alloy with 1.5 mm thickness was used die-sided. For this combination a suitable tool combination and punch distance was experimentally identified. A finite element model was created to reproduce the joining process. For the modelling of the material of both joining partners flow curves determined by Vallaster et al. were used [1]. The punch and die were recreated digitally by opto-electronic measurements and transformed into a mesh suitable for numerical simulation. The model was validated by comparing process values like the maximum force applied by the punch and geometrical values in the joints cross section. Additionally, a process window for suitable punch distances was experimentally determined. Afterwards a variation of 70 different process designs was conducted with variants inside and outside the process window. The results were used for training, testing and validating various machine learning models. All models competed against each other to find the must suited model to predict every geometric value. To ensure good model performances and prevent the model from overfitting, a tenfold cross validation was used for validating the models. Analysis of the results gives the following key findings: i) Good predictability is reached for the interlock and sheet thickness of the joint. ii) Prediction neck thickness showed low error values, but also low correlation. iii)The prediction of those key values for evaluating clinch joint characteristics by machine learning models positively impacts needed resources in comparison to numerical models.","lang":"eng"}],"language":[{"iso":"eng"}],"doi":"10.21741/9781644903599-157","title":"Data driven prognosis of clinch joints in multi-material design","year":"2025","publication_identifier":{"issn":["2474-395X"]},"author":[{"id":"76631","last_name":"Ludwig","first_name":"Jean-Patrick","full_name":"Ludwig, Jean-Patrick"},{"first_name":"Seraphin ","last_name":"Tsi-Nda Lontsi","full_name":"Tsi-Nda Lontsi, Seraphin "},{"first_name":"Jonas","last_name":"Neumann","full_name":"Neumann, Jonas"},{"full_name":"Kappis, Lukas","last_name":"Kappis","first_name":"Lukas"},{"full_name":"Scharr, Christian ","last_name":"Scharr","first_name":"Christian "},{"last_name":"Flügge","first_name":"Wilko","full_name":"Flügge, Wilko"},{"full_name":"Merklein, Marion","first_name":"Marion","last_name":"Merklein"},{"full_name":"Meschut, Gerson","first_name":"Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056"}],"date_updated":"2025-05-13T07:20:19Z","publication_status":"published","intvolume":" 54","place":"Paestum","citation":{"ama":"Ludwig J-P, Tsi-Nda Lontsi S, Neumann J, et al. Data driven prognosis of clinch joints in multi-material design. In: Materials Research Proceedings. Vol 54. Materials Research Forum LLC; 2025. doi:10.21741/9781644903599-157","bibtex":"@inproceedings{Ludwig_Tsi-Nda Lontsi_Neumann_Kappis_Scharr_Flügge_Merklein_Meschut_2025, place={Paestum}, title={Data driven prognosis of clinch joints in multi-material design}, volume={54}, DOI={10.21741/9781644903599-157}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Ludwig, Jean-Patrick and Tsi-Nda Lontsi, Seraphin and Neumann, Jonas and Kappis, Lukas and Scharr, Christian and Flügge, Wilko and Merklein, Marion and Meschut, Gerson}, year={2025} }","mla":"Ludwig, Jean-Patrick, et al. “Data Driven Prognosis of Clinch Joints in Multi-Material Design.” Materials Research Proceedings, vol. 54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-157.","short":"J.-P. Ludwig, S. Tsi-Nda Lontsi, J. Neumann, L. Kappis, C. Scharr, W. Flügge, M. Merklein, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, Paestum, 2025.","chicago":"Ludwig, Jean-Patrick, Seraphin Tsi-Nda Lontsi, Jonas Neumann, Lukas Kappis, Christian Scharr, Wilko Flügge, Marion Merklein, and Gerson Meschut. “Data Driven Prognosis of Clinch Joints in Multi-Material Design.” In Materials Research Proceedings, Vol. 54. Paestum: Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-157.","apa":"Ludwig, J.-P., Tsi-Nda Lontsi, S., Neumann, J., Kappis, L., Scharr, C., Flügge, W., Merklein, M., & Meschut, G. (2025). Data driven prognosis of clinch joints in multi-material design. Materials Research Proceedings, 54. https://doi.org/10.21741/9781644903599-157","ieee":"J.-P. Ludwig et al., “Data driven prognosis of clinch joints in multi-material design,” in Materials Research Proceedings, 2025, vol. 54, doi: 10.21741/9781644903599-157."},"_id":"59876","publisher":"Materials Research Forum LLC","user_id":"76631","volume":54,"status":"public"},{"citation":{"mla":"Drossel, Kerstin, et al. “Basisdimensionen der Unterrichtsqualität im Kontext des Erwerbs digitaler Kompetenzen an resilienten Schulen.” Zeitschrift für Bildungsforschung, Springer Science and Business Media LLC, 2025, doi:10.1007/s35834-024-00468-z.","ama":"Drossel K, Niemann J, Oldak A, Eickelmann B. Basisdimensionen der Unterrichtsqualität im Kontext des Erwerbs digitaler Kompetenzen an resilienten Schulen. Zeitschrift für Bildungsforschung. Published online 2025. doi:10.1007/s35834-024-00468-z","bibtex":"@article{Drossel_Niemann_Oldak_Eickelmann_2025, title={Basisdimensionen der Unterrichtsqualität im Kontext des Erwerbs digitaler Kompetenzen an resilienten Schulen}, DOI={10.1007/s35834-024-00468-z}, journal={Zeitschrift für Bildungsforschung}, publisher={Springer Science and Business Media LLC}, author={Drossel, Kerstin and Niemann, Jan and Oldak, Anna and Eickelmann, Birgit}, year={2025} }","apa":"Drossel, K., Niemann, J., Oldak, A., & Eickelmann, B. (2025). Basisdimensionen der Unterrichtsqualität im Kontext des Erwerbs digitaler Kompetenzen an resilienten Schulen. Zeitschrift für Bildungsforschung. https://doi.org/10.1007/s35834-024-00468-z","ieee":"K. Drossel, J. Niemann, A. Oldak, and B. Eickelmann, “Basisdimensionen der Unterrichtsqualität im Kontext des Erwerbs digitaler Kompetenzen an resilienten Schulen,” Zeitschrift für Bildungsforschung, 2025, doi: 10.1007/s35834-024-00468-z.","chicago":"Drossel, Kerstin, Jan Niemann, Anna Oldak, and Birgit Eickelmann. “Basisdimensionen der Unterrichtsqualität im Kontext des Erwerbs digitaler Kompetenzen an resilienten Schulen.” Zeitschrift für Bildungsforschung, 2025. https://doi.org/10.1007/s35834-024-00468-z.","short":"K. Drossel, J. Niemann, A. Oldak, B. Eickelmann, Zeitschrift für Bildungsforschung (2025)."},"publication":"Zeitschrift für Bildungsforschung","abstract":[{"text":"Zusammenfassung\r\n Die fortschreitende Digitalisierung stellt Schulen vor Herausforderungen, insbesondere bei der Nutzung digitaler Medien in unterrichtlichen Lehr- und Lernprozessen mit dem Ziel, den (über-) fachlichen Kompetenzerwerb aller Schüler*innen zu unterstützen. Betrachtet man die digitalen Kompetenzen, zeigt sich, dass auch diese sozialen Disparitäten unterliegen. Dennoch lassen sich in ICILS organisational resiliente Schulen identifizieren, deren Schüler*innen trotz herausfordernder Schüler*innenkomposition überdurchschnittliche digitale Kompetenzen erreichen. Studien, die fachspezifische Kompetenzen untersuchen, lassen erkennen, dass organisational resiliente Schulen gemeinsame Merkmale aufweisen. Ein Merkmal, das in diesem Zusammenhang bedeutsam erscheint, ist die Gestaltung von Unterrichtsqualitätsmerkmalen. Digitale Kompetenzen erscheinen diesbezüglich unerforscht, sodass der vorliegende Beitrag mittels Daten aus der BMBF-geförderten qualitativen ICILS-Vertiefungsstudie UneS-ICILS 2018 (Unerwartbar erfolgreiche Schulen im digitalen Wandel) Basisdimensionen von Unterrichtsqualität an resilienten Schulen in Bezug auf digitale Kompetenzen untersucht. Für die Analyse wurden 22 leitfadengestützte Interviews mit Lehrkräften und sieben Gruppeninterviews mit Schüler*innen im Hinblick auf eine ‚effiziente Klassenführung‘, ‚kognitive Aktivierung‘ und ‚konstruktive Unterstützung‘ inhaltsanalytisch ausgewertet. Im Ergebnis zeigt die Analyse der Dimension ‚effiziente Klassenführung‘, dass sich u. a. die Organisation und Struktur mittels digitaler Medien wie beispielsweise durch den Einsatz digitaler Lernplattformen als bedeutende Faktoren herausstellen. Hinsichtlich der ‚kognitiven Aktivierung‘ wird der Einsatz digitaler Tools für das Anknüpfen an individuelles Vorwissen als bedeutend hervorgehoben. Darüber hinaus zeigt sich bei der Dimension ‚konstruktive Unterstützung‘ die Förderung des selbstgesteuerten Lernens und das Ausbilden von Unterstützungsstrukturen zum (kooperativen) Lernen mit digitalen Medien als bedeutsam. Induktiv ergänzt wurde die Dimension ‚Inhaltswahl und selektive Fokussierung‘, die die hohe Relevanz des Erwerbs digitaler Kompetenzen im Unterricht an den resilienten Schulen verdeutlicht.","lang":"eng"}],"date_created":"2025-02-07T06:53:08Z","department":[{"_id":"462"}],"type":"journal_article","publication_identifier":{"issn":["2190-6890","2190-6904"]},"author":[{"id":"48921","full_name":"Drossel, Kerstin","first_name":"Kerstin","last_name":"Drossel"},{"full_name":"Niemann, Jan","first_name":"Jan","last_name":"Niemann","id":"32467"},{"id":"98273","last_name":"Oldak","first_name":"Anna","full_name":"Oldak, Anna"},{"id":"40387","full_name":"Eickelmann, Birgit","first_name":"Birgit","orcid":"0000-0001-6124-746X","last_name":"Eickelmann"}],"year":"2025","title":"Basisdimensionen der Unterrichtsqualität im Kontext des Erwerbs digitaler Kompetenzen an resilienten Schulen","status":"public","date_updated":"2025-06-10T09:05:24Z","publication_status":"published","language":[{"iso":"ger"}],"_id":"58531","publisher":"Springer Science and Business Media LLC","doi":"10.1007/s35834-024-00468-z","user_id":"40387"},{"date_updated":"2025-06-11T08:46:27Z","intvolume":" 24","title":"Associations of carbohydrate quality and cardiovascular risk factors vary among diabetes subtypes.","status":"public","year":"2025","author":[{"full_name":"Weber, KS","last_name":"Weber","first_name":"KS"},{"full_name":"Schlesinger, S","last_name":"Schlesinger","first_name":"S"},{"full_name":"Goletzke, J","first_name":"J","last_name":"Goletzke"},{"full_name":"Straßburger, K","last_name":"Straßburger","first_name":"K"},{"full_name":"Zaharia, OP","first_name":"OP","last_name":"Zaharia"},{"first_name":"S","last_name":"Trenkamp","full_name":"Trenkamp, S"},{"last_name":"Wagner","first_name":"R","full_name":"Wagner, R"},{"full_name":"Lieb, W","last_name":"Lieb","first_name":"W"},{"id":"65985","full_name":"Buyken, Anette","first_name":"Anette","last_name":"Buyken"},{"last_name":"Roden","first_name":"M","full_name":"Roden, M"},{"full_name":"Herder, C","last_name":"Herder","first_name":"C"},{"last_name":"group","first_name":"GDS","full_name":"group, GDS"}],"publication_identifier":{"issn":["1475-2840"]},"pmid":"1","user_id":"92491","volume":24,"page":"53","language":[{"iso":"eng"}],"_id":"60179","publication":"Cardiovasc Diabetol","issue":"1","citation":{"short":"K. Weber, S. Schlesinger, J. Goletzke, K. Straßburger, O. Zaharia, S. Trenkamp, R. Wagner, W. Lieb, A. Buyken, M. Roden, C. Herder, G. group, Cardiovasc Diabetol 24 (2025) 53.","chicago":"Weber, KS, S Schlesinger, J Goletzke, K Straßburger, OP Zaharia, S Trenkamp, R Wagner, et al. “Associations of Carbohydrate Quality and Cardiovascular Risk Factors Vary among Diabetes Subtypes.” Cardiovasc Diabetol 24, no. 1 (2025): 53.","apa":"Weber, K., Schlesinger, S., Goletzke, J., Straßburger, K., Zaharia, O., Trenkamp, S., Wagner, R., Lieb, W., Buyken, A., Roden, M., Herder, C., & group, G. (2025). Associations of carbohydrate quality and cardiovascular risk factors vary among diabetes subtypes. Cardiovasc Diabetol, 24(1), 53.","ieee":"K. Weber et al., “Associations of carbohydrate quality and cardiovascular risk factors vary among diabetes subtypes.,” Cardiovasc Diabetol, vol. 24, no. 1, p. 53, 2025.","ama":"Weber K, Schlesinger S, Goletzke J, et al. Associations of carbohydrate quality and cardiovascular risk factors vary among diabetes subtypes. Cardiovasc Diabetol. 2025;24(1):53.","bibtex":"@article{Weber_Schlesinger_Goletzke_Straßburger_Zaharia_Trenkamp_Wagner_Lieb_Buyken_Roden_et al._2025, title={Associations of carbohydrate quality and cardiovascular risk factors vary among diabetes subtypes.}, volume={24}, number={1}, journal={Cardiovasc Diabetol}, author={Weber, KS and Schlesinger, S and Goletzke, J and Straßburger, K and Zaharia, OP and Trenkamp, S and Wagner, R and Lieb, W and Buyken, Anette and Roden, M and et al.}, year={2025}, pages={53} }","mla":"Weber, KS, et al. “Associations of Carbohydrate Quality and Cardiovascular Risk Factors Vary among Diabetes Subtypes.” Cardiovasc Diabetol, vol. 24, no. 1, 2025, p. 53."},"type":"journal_article","department":[{"_id":"22"}],"external_id":{"pmid":["39915806"]},"date_created":"2025-06-11T08:45:21Z"},{"title":"Effect of a controlled lifestyle intervention on medication use and costs: The Healthy Lifestyle Community Program (cohort 2).","status":"public","year":"2025","publication_identifier":{"issn":["0260-1060"]},"author":[{"full_name":"Kranz, RM","first_name":"RM","last_name":"Kranz"},{"full_name":"Kettler, C","first_name":"C","last_name":"Kettler"},{"full_name":"Anand, C","first_name":"C","last_name":"Anand"},{"full_name":"Koeder, C","first_name":"C","last_name":"Koeder"},{"last_name":"Husain","first_name":"S","full_name":"Husain, S"},{"full_name":"Schoch, N","first_name":"N","last_name":"Schoch"},{"id":"65985","full_name":"Buyken, Anette","last_name":"Buyken","first_name":"Anette"},{"first_name":"H","last_name":"Englert","full_name":"Englert, H"}],"date_updated":"2025-06-11T08:47:39Z","intvolume":" 31","page":"175-186","language":[{"iso":"eng"}],"_id":"60180","pmid":"1","user_id":"92491","volume":31,"publication":"Nutr Health","issue":"1","citation":{"ama":"Kranz R, Kettler C, Anand C, et al. Effect of a controlled lifestyle intervention on medication use and costs: The Healthy Lifestyle Community Program (cohort 2). Nutr Health. 2025;31(1):175-186.","bibtex":"@article{Kranz_Kettler_Anand_Koeder_Husain_Schoch_Buyken_Englert_2025, title={Effect of a controlled lifestyle intervention on medication use and costs: The Healthy Lifestyle Community Program (cohort 2).}, volume={31}, number={1}, journal={Nutr Health}, author={Kranz, RM and Kettler, C and Anand, C and Koeder, C and Husain, S and Schoch, N and Buyken, Anette and Englert, H}, year={2025}, pages={175–186} }","mla":"Kranz, RM, et al. “Effect of a Controlled Lifestyle Intervention on Medication Use and Costs: The Healthy Lifestyle Community Program (Cohort 2).” Nutr Health, vol. 31, no. 1, 2025, pp. 175–86.","short":"R. Kranz, C. Kettler, C. Anand, C. Koeder, S. Husain, N. Schoch, A. Buyken, H. Englert, Nutr Health 31 (2025) 175–186.","chicago":"Kranz, RM, C Kettler, C Anand, C Koeder, S Husain, N Schoch, Anette Buyken, and H Englert. “Effect of a Controlled Lifestyle Intervention on Medication Use and Costs: The Healthy Lifestyle Community Program (Cohort 2).” Nutr Health 31, no. 1 (2025): 175–86.","apa":"Kranz, R., Kettler, C., Anand, C., Koeder, C., Husain, S., Schoch, N., Buyken, A., & Englert, H. (2025). Effect of a controlled lifestyle intervention on medication use and costs: The Healthy Lifestyle Community Program (cohort 2). Nutr Health, 31(1), 175–186.","ieee":"R. Kranz et al., “Effect of a controlled lifestyle intervention on medication use and costs: The Healthy Lifestyle Community Program (cohort 2).,” Nutr Health, vol. 31, no. 1, pp. 175–186, 2025."},"external_id":{"pmid":["36938591"]},"date_created":"2025-06-11T08:46:42Z","type":"journal_article","department":[{"_id":"22"}]},{"oa":"1","department":[{"_id":"15"}],"type":"dissertation","date_created":"2026-02-04T06:57:14Z","abstract":[{"text":"Electron energy-loss spectroscopy (EELS) is an advanced analytical technique in transmission electron microscopy, as it provides insights into material characteristics, such as electronic properties or elemental composition, at the atomic scale. The precision of every EELS analysis, however, is inherently limited by noises and blur. This thesis offers a comprehensive understanding of the noise, which is particularly valuable at low dwell times necessary for beam sensitive materials and for electron-matter interactions with low frequency of occurrence, where the noise dominates the measurement. Additionally, correlations encountered in the noise of an EELS measurement are described from both a theoretical and experimental perspective. These correlations are caused by a convolution of the noisy signal with the detector point spread function. Methods for characterizing key noise parameters of typical detectors are described, allowing the noise model to be tailored to any EELS detector. Ultimately, a novel deconvolution method enabling significant sharpening and denoising of EELS measurements is introduced and demonstrated. Its efficiency is further validated on both simulation and experimental data. The described advancement offered by the proposed deconvolution method enables the extension of current electron microscope capabilities, facilitating analysis that would be unfeasible with existing deconvolution techniques.","lang":"eng"}],"related_material":{"link":[{"url":"https://doi.org/10.17619/UNIPB/1-2438","relation":"software"}]},"supervisor":[{"full_name":"Lindner, Jörg K. N.","last_name":"Lindner","first_name":"Jörg K. N.","id":"20797"}],"citation":{"short":"C. Zietlow, A Novel Lagrangian-Based Method for the Deconvolution of Electron Energy-Loss Spectra, Universitätsbibliothek Paderborn, 2025.","chicago":"Zietlow, Christian. A Novel Lagrangian-Based Method for the Deconvolution of Electron Energy-Loss Spectra. Universitätsbibliothek Paderborn, 2025. https://doi.org/10.17619/UNIPB/1-2438.","ieee":"C. Zietlow, A novel Lagrangian-based method for the deconvolution of electron energy-loss spectra. Universitätsbibliothek Paderborn, 2025.","apa":"Zietlow, C. (2025). A novel Lagrangian-based method for the deconvolution of electron energy-loss spectra. Universitätsbibliothek Paderborn. https://doi.org/10.17619/UNIPB/1-2438","bibtex":"@book{Zietlow_2025, title={A novel Lagrangian-based method for the deconvolution of electron energy-loss spectra}, DOI={10.17619/UNIPB/1-2438}, publisher={Universitätsbibliothek Paderborn}, author={Zietlow, Christian}, year={2025} }","ama":"Zietlow C. A Novel Lagrangian-Based Method for the Deconvolution of Electron Energy-Loss Spectra. Universitätsbibliothek Paderborn; 2025. doi:10.17619/UNIPB/1-2438","mla":"Zietlow, Christian. A Novel Lagrangian-Based Method for the Deconvolution of Electron Energy-Loss Spectra. Universitätsbibliothek Paderborn, 2025, doi:10.17619/UNIPB/1-2438."},"doi":"10.17619/UNIPB/1-2438","user_id":"77368","_id":"63856","language":[{"iso":"eng"}],"publisher":"Universitätsbibliothek Paderborn","main_file_link":[{"open_access":"1"}],"date_updated":"2026-02-04T12:28:17Z","publication_status":"published","author":[{"id":"77368","first_name":"Christian","orcid":"https://orcid.org/0000-0001-9696-619X","last_name":"Zietlow","full_name":"Zietlow, Christian"}],"status":"public","title":"A novel Lagrangian-based method for the deconvolution of electron energy-loss spectra","year":"2025"},{"department":[{"_id":"35"},{"_id":"17"},{"_id":"22"}],"type":"journal_article","date_created":"2026-02-05T09:22:45Z","citation":{"mla":"Dinkelbach, Lars, et al. “Urinary Steroid Metabolome Shows Adrenal, Gonadal, and Neuroactive Steroid Dysregulation in Adolescents with Depressive Symptoms.” Journal of Affective Disorders, vol. 399, 120867, Elsevier BV, 2025, doi:10.1016/j.jad.2025.120867.","apa":"Dinkelbach, L., Wudy, S. A., Hartmann, M. F., Libuda, L., Föcker, M., Hebebrand, J., Hinney, A., Nöthlings, U., Alexy, U., Grasemann, C., & Hirtz, R. (2025). Urinary steroid metabolome shows adrenal, gonadal, and neuroactive steroid dysregulation in adolescents with depressive symptoms. Journal of Affective Disorders, 399, Article 120867. https://doi.org/10.1016/j.jad.2025.120867","ieee":"L. Dinkelbach et al., “Urinary steroid metabolome shows adrenal, gonadal, and neuroactive steroid dysregulation in adolescents with depressive symptoms,” Journal of Affective Disorders, vol. 399, Art. no. 120867, 2025, doi: 10.1016/j.jad.2025.120867.","chicago":"Dinkelbach, Lars, Stefan A. Wudy, Michaela F. Hartmann, Lars Libuda, Manuel Föcker, Johannes Hebebrand, Anke Hinney, et al. “Urinary Steroid Metabolome Shows Adrenal, Gonadal, and Neuroactive Steroid Dysregulation in Adolescents with Depressive Symptoms.” Journal of Affective Disorders 399 (2025). https://doi.org/10.1016/j.jad.2025.120867.","ama":"Dinkelbach L, Wudy SA, Hartmann MF, et al. Urinary steroid metabolome shows adrenal, gonadal, and neuroactive steroid dysregulation in adolescents with depressive symptoms. Journal of Affective Disorders. 2025;399. doi:10.1016/j.jad.2025.120867","short":"L. Dinkelbach, S.A. Wudy, M.F. Hartmann, L. Libuda, M. Föcker, J. Hebebrand, A. Hinney, U. Nöthlings, U. Alexy, C. Grasemann, R. Hirtz, Journal of Affective Disorders 399 (2025).","bibtex":"@article{Dinkelbach_Wudy_Hartmann_Libuda_Föcker_Hebebrand_Hinney_Nöthlings_Alexy_Grasemann_et al._2025, title={Urinary steroid metabolome shows adrenal, gonadal, and neuroactive steroid dysregulation in adolescents with depressive symptoms}, volume={399}, DOI={10.1016/j.jad.2025.120867}, number={120867}, journal={Journal of Affective Disorders}, publisher={Elsevier BV}, author={Dinkelbach, Lars and Wudy, Stefan A. and Hartmann, Michaela F. and Libuda, Lars and Föcker, Manuel and Hebebrand, Johannes and Hinney, Anke and Nöthlings, Ute and Alexy, Ute and Grasemann, Corinna and et al.}, year={2025} }"},"publication":"Journal of Affective Disorders","volume":399,"doi":"10.1016/j.jad.2025.120867","user_id":"88682","_id":"63882","language":[{"iso":"eng"}],"publisher":"Elsevier BV","article_number":"120867","intvolume":" 399","date_updated":"2026-02-05T09:22:55Z","publication_status":"published","author":[{"first_name":"Lars","last_name":"Dinkelbach","full_name":"Dinkelbach, Lars"},{"full_name":"Wudy, Stefan A.","last_name":"Wudy","first_name":"Stefan A."},{"last_name":"Hartmann","first_name":"Michaela F.","full_name":"Hartmann, Michaela F."},{"first_name":"Lars","last_name":"Libuda","full_name":"Libuda, Lars"},{"full_name":"Föcker, Manuel","last_name":"Föcker","first_name":"Manuel"},{"full_name":"Hebebrand, Johannes","last_name":"Hebebrand","first_name":"Johannes"},{"full_name":"Hinney, Anke","last_name":"Hinney","first_name":"Anke"},{"full_name":"Nöthlings, Ute","first_name":"Ute","last_name":"Nöthlings"},{"last_name":"Alexy","first_name":"Ute","full_name":"Alexy, Ute"},{"last_name":"Grasemann","first_name":"Corinna","full_name":"Grasemann, Corinna"},{"full_name":"Hirtz, Raphael","first_name":"Raphael","last_name":"Hirtz"}],"publication_identifier":{"issn":["0165-0327"]},"status":"public","title":"Urinary steroid metabolome shows adrenal, gonadal, and neuroactive steroid dysregulation in adolescents with depressive symptoms","year":"2025"},{"citation":{"ieee":"C. Scheideler, A. Padalkin, and M. Kumar, “Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025),” Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025), 2025.","mla":"Scheideler, Christian, et al. “Reconfiguration and Locomotion with Joint Movements in the Amoebot Model. Auton. Robots 49(3): 22 (2025).” Reconfiguration and Locomotion with Joint Movements in the Amoebot Model. Auton. Robots 49(3): 22 (2025), 2025.","apa":"Scheideler, C., Padalkin, A., & Kumar, M. (2025). Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025). Reconfiguration and Locomotion with Joint Movements in the Amoebot Model. Auton. Robots 49(3): 22 (2025).","bibtex":"@article{Scheideler_Padalkin_Kumar_2025, title={Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025)}, journal={Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025)}, author={Scheideler, Christian and Padalkin, Andreas and Kumar, Manish}, year={2025} }","ama":"Scheideler C, Padalkin A, Kumar M. Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025). Reconfiguration and locomotion with joint movements in the amoebot model Auton Robots 49(3): 22 (2025). Published online 2025.","short":"C. Scheideler, A. Padalkin, M. Kumar, Reconfiguration and Locomotion with Joint Movements in the Amoebot Model. Auton. Robots 49(3): 22 (2025) (2025).","chicago":"Scheideler, Christian, Andreas Padalkin, and Manish Kumar. “Reconfiguration and Locomotion with Joint Movements in the Amoebot Model. Auton. Robots 49(3): 22 (2025).” Reconfiguration and Locomotion with Joint Movements in the Amoebot Model. Auton. Robots 49(3): 22 (2025), 2025."},"publication":"Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025)","date_created":"2026-02-10T09:41:12Z","department":[{"_id":"34"},{"_id":"7"},{"_id":"79"}],"type":"journal_article","author":[{"id":"20792","full_name":"Scheideler, Christian","first_name":"Christian","last_name":"Scheideler"},{"full_name":"Padalkin, Andreas","first_name":"Andreas","last_name":"Padalkin","id":"88238"},{"first_name":"Manish","last_name":"Kumar","full_name":"Kumar, Manish"}],"title":"Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025)","status":"public","year":"2025","date_updated":"2026-02-11T09:11:49Z","language":[{"iso":"eng"}],"_id":"64098","user_id":"15578"},{"author":[{"full_name":"Scheideler, Christian","first_name":"Christian","last_name":"Scheideler","id":"20792"},{"first_name":"Matthias","last_name":"Artmann","full_name":"Artmann, Matthias","id":"63743"},{"full_name":"Maurer, Tobias ","first_name":"Tobias ","last_name":"Maurer"},{"last_name":"Padalkin","first_name":"Andreas","full_name":"Padalkin, Andreas","id":"88238"},{"id":"3902","first_name":"Daniel","last_name":"Warner","full_name":"Warner, Daniel"}],"year":"2025","status":"public","title":"AmoebotSim 2.0: A Visual Simulation Environment for the Amoebot Model with Reconfigurable Circuits and Joint Movements (Media Exposition). ","date_updated":"2026-02-11T09:11:42Z","language":[{"iso":"eng"}],"_id":"64094","user_id":"15578","citation":{"apa":"Scheideler, C., Artmann, M., Maurer, T., Padalkin, A., & Warner, D. (2025). AmoebotSim 2.0: A Visual Simulation Environment for the Amoebot Model with Reconfigurable Circuits and Joint Movements (Media Exposition). .","ieee":"C. Scheideler, M. Artmann, T. Maurer, A. Padalkin, and D. Warner, “AmoebotSim 2.0: A Visual Simulation Environment for the Amoebot Model with Reconfigurable Circuits and Joint Movements (Media Exposition). ,” 2025.","chicago":"Scheideler, Christian, Matthias Artmann, Tobias Maurer, Andreas Padalkin, and Daniel Warner. “AmoebotSim 2.0: A Visual Simulation Environment for the Amoebot Model with Reconfigurable Circuits and Joint Movements (Media Exposition). .” SoCG 2025: 81:1-81:5, 2025.","short":"C. Scheideler, M. Artmann, T. Maurer, A. Padalkin, D. Warner, in: SoCG 2025: 81:1-81:5, 2025.","mla":"Scheideler, Christian, et al. AmoebotSim 2.0: A Visual Simulation Environment for the Amoebot Model with Reconfigurable Circuits and Joint Movements (Media Exposition). . 2025.","ama":"Scheideler C, Artmann M, Maurer T, Padalkin A, Warner D. AmoebotSim 2.0: A Visual Simulation Environment for the Amoebot Model with Reconfigurable Circuits and Joint Movements (Media Exposition). . In: ; 2025.","bibtex":"@inproceedings{Scheideler_Artmann_Maurer_Padalkin_Warner_2025, place={SoCG 2025: 81:1-81:5}, title={AmoebotSim 2.0: A Visual Simulation Environment for the Amoebot Model with Reconfigurable Circuits and Joint Movements (Media Exposition). }, author={Scheideler, Christian and Artmann, Matthias and Maurer, Tobias and Padalkin, Andreas and Warner, Daniel}, year={2025} }"},"date_created":"2026-02-10T09:01:15Z","place":"SoCG 2025: 81:1-81:5","department":[{"_id":"34"},{"_id":"7"},{"_id":"79"}],"type":"conference"},{"citation":{"mla":"Müller, Laura, et al. “Getting Things Done: How to Make Simulation Data FAIR and Ready to Reuse.” IFIP Advances in Information and Communication Technology, Springer Nature Switzerland, 2025, pp. 140–50, doi:10.1007/978-3-032-09704-0_14.","bibtex":"@inproceedings{Müller_Hinterthaner_Ortlieb_Mohnfeld_Schultz_Uhe_Koepler_Mozgova_2025, place={Cham}, title={Getting Things Done: How to Make Simulation Data FAIR and Ready to Reuse}, DOI={10.1007/978-3-032-09704-0_14}, booktitle={IFIP Advances in Information and Communication Technology}, publisher={Springer Nature Switzerland}, author={Müller, Laura and Hinterthaner, Marc and Ortlieb, Eduard and Mohnfeld, Norman and Schultz, Andreas Maximilian and Uhe, Johanna and Koepler, Oliver and Mozgova, Iryna}, year={2025}, pages={140–150} }","ama":"Müller L, Hinterthaner M, Ortlieb E, et al. Getting Things Done: How to Make Simulation Data FAIR and Ready to Reuse. In: IFIP Advances in Information and Communication Technology. Springer Nature Switzerland; 2025:140-150. doi:10.1007/978-3-032-09704-0_14","ieee":"L. Müller et al., “Getting Things Done: How to Make Simulation Data FAIR and Ready to Reuse,” in IFIP Advances in Information and Communication Technology, 2025, pp. 140–150, doi: 10.1007/978-3-032-09704-0_14.","apa":"Müller, L., Hinterthaner, M., Ortlieb, E., Mohnfeld, N., Schultz, A. M., Uhe, J., Koepler, O., & Mozgova, I. (2025). Getting Things Done: How to Make Simulation Data FAIR and Ready to Reuse. IFIP Advances in Information and Communication Technology, 140–150. https://doi.org/10.1007/978-3-032-09704-0_14","short":"L. Müller, M. Hinterthaner, E. Ortlieb, N. Mohnfeld, A.M. Schultz, J. Uhe, O. Koepler, I. Mozgova, in: IFIP Advances in Information and Communication Technology, Springer Nature Switzerland, Cham, 2025, pp. 140–150.","chicago":"Müller, Laura, Marc Hinterthaner, Eduard Ortlieb, Norman Mohnfeld, Andreas Maximilian Schultz, Johanna Uhe, Oliver Koepler, and Iryna Mozgova. “Getting Things Done: How to Make Simulation Data FAIR and Ready to Reuse.” In IFIP Advances in Information and Communication Technology, 140–50. Cham: Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-032-09704-0_14."},"publication":"IFIP Advances in Information and Communication Technology","quality_controlled":"1","place":"Cham","date_created":"2025-12-01T14:12:55Z","department":[{"_id":"741"}],"type":"conference","author":[{"first_name":"Laura","last_name":"Müller","full_name":"Müller, Laura","id":"44605"},{"full_name":"Hinterthaner, Marc","first_name":"Marc","last_name":"Hinterthaner"},{"last_name":"Ortlieb","first_name":"Eduard","full_name":"Ortlieb, Eduard"},{"last_name":"Mohnfeld","first_name":"Norman","full_name":"Mohnfeld, Norman"},{"first_name":"Andreas Maximilian","last_name":"Schultz","full_name":"Schultz, Andreas Maximilian","id":"40599"},{"full_name":"Uhe, Johanna","first_name":"Johanna","last_name":"Uhe"},{"full_name":"Koepler, Oliver","first_name":"Oliver","last_name":"Koepler"},{"full_name":"Mozgova, Iryna","last_name":"Mozgova","first_name":"Iryna","id":"95903"}],"publication_identifier":{"isbn":["9783032097033","9783032097040"],"issn":["1868-4238","1868-422X"]},"status":"public","year":"2025","title":"Getting Things Done: How to Make Simulation Data FAIR and Ready to Reuse","date_updated":"2026-02-20T13:01:07Z","publication_status":"published","publisher":"Springer Nature Switzerland","_id":"62728","language":[{"iso":"eng"}],"page":"140-150","doi":"10.1007/978-3-032-09704-0_14","user_id":"44605"},{"status":"public","year":"2025","title":"Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter Crashbelastung","conference":{"end_date":"2025-02-19","location":"Köln","start_date":"2025-02-18","name":"25. Kolloquium: Gemeinsame Forschung in der Klebtechnik"},"corporate_editor":["DECHEMA"],"author":[{"first_name":"Lars","last_name":"Schmelzle","full_name":"Schmelzle, Lars"},{"full_name":"Beule, Felix","first_name":"Felix","last_name":"Beule","id":"66192"},{"full_name":"Possart, Gunnar","last_name":"Possart","first_name":"Gunnar"},{"full_name":"Teutenberg, Dominik","last_name":"Teutenberg","first_name":"Dominik","id":"537"},{"full_name":"Mergheim, Julia","first_name":"Julia","last_name":"Mergheim"},{"full_name":"Meschut, Gerson","first_name":"Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056"}],"date_updated":"2026-02-23T11:44:37Z","_id":"58844","language":[{"iso":"eng"}],"user_id":"537","publication":"25. Kolloquium: Gemeinsame Forschung in der Klebtechnik","citation":{"short":"L. Schmelzle, F. Beule, G. Possart, D. Teutenberg, J. Mergheim, G. Meschut, in: DECHEMA (Ed.), 25. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, 2025.","ama":"Schmelzle L, Beule F, Possart G, Teutenberg D, Mergheim J, Meschut G. Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter Crashbelastung. In: DECHEMA, ed. 25. Kolloquium: Gemeinsame Forschung in Der Klebtechnik. ; 2025.","chicago":"Schmelzle, Lars, Felix Beule, Gunnar Possart, Dominik Teutenberg, Julia Mergheim, and Gerson Meschut. “Methodenentwicklung Zur Simulation von Hyperelastischen Klebverbindungen Unter Crashbelastung.” In 25. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, edited by DECHEMA, 2025.","bibtex":"@inproceedings{Schmelzle_Beule_Possart_Teutenberg_Mergheim_Meschut_2025, title={Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter Crashbelastung}, booktitle={25. Kolloquium: Gemeinsame Forschung in der Klebtechnik}, author={Schmelzle, Lars and Beule, Felix and Possart, Gunnar and Teutenberg, Dominik and Mergheim, Julia and Meschut, Gerson}, editor={DECHEMA}, year={2025} }","mla":"Schmelzle, Lars, et al. “Methodenentwicklung Zur Simulation von Hyperelastischen Klebverbindungen Unter Crashbelastung.” 25. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, edited by DECHEMA, 2025.","apa":"Schmelzle, L., Beule, F., Possart, G., Teutenberg, D., Mergheim, J., & Meschut, G. (2025). Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter Crashbelastung. In DECHEMA (Ed.), 25. Kolloquium: Gemeinsame Forschung in der Klebtechnik.","ieee":"L. Schmelzle, F. Beule, G. Possart, D. Teutenberg, J. Mergheim, and G. Meschut, “Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter Crashbelastung,” in 25. Kolloquium: Gemeinsame Forschung in der Klebtechnik, Köln, 2025."},"date_created":"2025-02-26T07:23:07Z","type":"conference","department":[{"_id":"157"}]},{"publication_identifier":{"issn":["2474-395X"]},"author":[{"full_name":"Chen, Chin","first_name":"Chin","last_name":"Chen"},{"full_name":"Schlichter, Malte Christian","first_name":"Malte Christian","last_name":"Schlichter","id":"61977"},{"full_name":"Harzheim, Sven","last_name":"Harzheim","first_name":"Sven"},{"last_name":"Hofmann","first_name":"Martin","full_name":"Hofmann, Martin"},{"first_name":"Mathias","last_name":"Bobbert","full_name":"Bobbert, Mathias","id":"7850"},{"last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson","full_name":"Meschut, Gerson","id":"32056"},{"last_name":"Wallmersperger","first_name":"Thomas","full_name":"Wallmersperger, Thomas"}],"title":"High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014","year":"2025","intvolume":" 52","publication_status":"published","date_updated":"2026-02-24T13:43:56Z","language":[{"iso":"eng"}],"doi":"10.21741/9781644903551-23","publication":"Materials Research Proceedings","abstract":[{"lang":"eng","text":"Abstract. As a widely used sheet metal in clinched joints within the automotive industry, the aluminum alloy EN AW-6014 has been the focus of numerous studies. High-cycle fatigue (HCF) is a critical aspect when assessing the durability of clinched joints. In the present work, the HCF behavior of EN AW-6014 T4 was explored both experimentally and numerically. To model the fatigue behavior, Lemaitre’s two-scale damage model was used. Two key parameters, damage strength and damage exponent, are necessary for numerical investigations of HCF behavior. These parameters were determined through experiments with flat specimens and subsequently validated within a numerical model of clinched joints. The numerical results for fatigue match the experimental ones of the clinched joints quite well."}],"date_created":"2025-04-15T11:14:53Z","department":[{"_id":"157"}],"type":"conference","status":"public","publisher":"Materials Research Forum LLC","_id":"59587","volume":52,"user_id":"7850","citation":{"ama":"Chen C, Schlichter MC, Harzheim S, et al. High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014. In: Materials Research Proceedings. Vol 52. Materials Research Forum LLC; 2025. doi:10.21741/9781644903551-23","short":"C. Chen, M.C. Schlichter, S. Harzheim, M. Hofmann, M. Bobbert, G. Meschut, T. Wallmersperger, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","chicago":"Chen, Chin, Malte Christian Schlichter, Sven Harzheim, Martin Hofmann, Mathias Bobbert, Gerson Meschut, and Thomas Wallmersperger. “High-Cycle Fatigue Testing and Parameter Identification for Numerical Simulation of Aluminum Alloy EN AW-6014.” In Materials Research Proceedings, Vol. 52. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-23.","bibtex":"@inproceedings{Chen_Schlichter_Harzheim_Hofmann_Bobbert_Meschut_Wallmersperger_2025, title={High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014}, volume={52}, DOI={10.21741/9781644903551-23}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Chen, Chin and Schlichter, Malte Christian and Harzheim, Sven and Hofmann, Martin and Bobbert, Mathias and Meschut, Gerson and Wallmersperger, Thomas}, year={2025} }","mla":"Chen, Chin, et al. “High-Cycle Fatigue Testing and Parameter Identification for Numerical Simulation of Aluminum Alloy EN AW-6014.” Materials Research Proceedings, vol. 52, Materials Research Forum LLC, 2025, doi:10.21741/9781644903551-23.","apa":"Chen, C., Schlichter, M. C., Harzheim, S., Hofmann, M., Bobbert, M., Meschut, G., & Wallmersperger, T. (2025). High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-23","ieee":"C. Chen et al., “High-cycle fatigue testing and parameter identification for numerical simulation of aluminum alloy EN AW-6014,” in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-23."},"project":[{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"},{"_id":"130","name":"TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"quality_controlled":"1"},{"_id":"60440","publisher":"Materials Research Forum LLC","user_id":"7850","volume":54,"status":"public","citation":{"ama":"Holtkamp PK, Bielak CR, Bobbert M, Meschut G. Simulation of the joining process of graded hardened multi-range capable rivets. In: Materials Research Proceedings. Vol 54. Materials Research Forum LLC; 2025. doi:10.21741/9781644903599-153","bibtex":"@inproceedings{Holtkamp_Bielak_Bobbert_Meschut_2025, title={Simulation of the joining process of graded hardened multi-range capable rivets}, volume={54}, DOI={10.21741/9781644903599-153}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Holtkamp, Pia Katharina and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2025} }","mla":"Holtkamp, Pia Katharina, et al. “Simulation of the Joining Process of Graded Hardened Multi-Range Capable Rivets.” Materials Research Proceedings, vol. 54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-153.","short":"P.K. Holtkamp, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","chicago":"Holtkamp, Pia Katharina, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Simulation of the Joining Process of Graded Hardened Multi-Range Capable Rivets.” In Materials Research Proceedings, Vol. 54. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-153.","apa":"Holtkamp, P. K., Bielak, C. R., Bobbert, M., & Meschut, G. (2025). Simulation of the joining process of graded hardened multi-range capable rivets. Materials Research Proceedings, 54. https://doi.org/10.21741/9781644903599-153","ieee":"P. K. Holtkamp, C. R. Bielak, M. Bobbert, and G. Meschut, “Simulation of the joining process of graded hardened multi-range capable rivets,” in Materials Research Proceedings, 2025, vol. 54, doi: 10.21741/9781644903599-153."},"quality_controlled":"1","project":[{"name":"TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"}],"language":[{"iso":"eng"}],"doi":"10.21741/9781644903599-153","year":"2025","title":"Simulation of the joining process of graded hardened multi-range capable rivets","author":[{"last_name":"Holtkamp","first_name":"Pia Katharina","full_name":"Holtkamp, Pia Katharina","id":"44935"},{"id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak","first_name":"Christian Roman"},{"full_name":"Bobbert, Mathias","first_name":"Mathias","last_name":"Bobbert","id":"7850"},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"publication_identifier":{"issn":["2474-395X"]},"date_updated":"2026-02-24T14:12:10Z","publication_status":"published","intvolume":" 54","date_created":"2025-06-27T08:23:00Z","type":"conference","department":[{"_id":"43"},{"_id":"157"}],"publication":"Materials Research Proceedings","abstract":[{"lang":"eng","text":"The versatile self-pierce riveting (V-SPR) is a further development of semi-tubular self-pierce riveting. V-SPR enables adaptation to changing boundary conditions, such as a change in the material thickness combination, without varying the rivet die combination due to increased punch actuation and the use of multi-range capable rivets [1]. The inner punch first sets the rivet. The outer punch then forms the rivet head to the respective sheet thickness. For this, the rivet requires a hard shank and a ductile rivet head, which is achieved by an inductive local hardening process [2]. Until now, the joint formation of rivets with graded hardness profile has been challenging to estimate in the FEM simulation due to the inhomogeneous material conditions in the rivet. In this study, a method capable of reproducing the experimentally determined hardness levels of rivets in detail is shown. This FE model enables the realistic modelling of the mechanical properties of the rivet on the basis of the hardness profile in order to predict the correct deformation processes and stresses during the riveting process. First, the detailed experimental hardness mapping of the locally heat-treated rivets is transferred into the FE model. The FEM material model can predict the local strength of the rivet based on hardness by scaling the flow curves. To estimate the predictive capability of the FEM model, the joint formation of rivets with different graded hardness profiles is compared experimentally and simulative. Based on the validated model, the influence of different rivet hardness profiles on the joint formation is analysed numerically. By adapting the material model, a high level of correlation between the experiment's joint formation and the simulation can be achieved."}]},{"date_created":"2025-11-04T12:48:21Z","type":"conference","keyword":["Finite Element Method (FEM)","Process","Thermoplastic Fiber Reinforced Plastic"],"publication":"Sheet Metal 2025","abstract":[{"lang":"eng","text":"This paper investigates two modeling approaches for the simulation of the deformation and decomposition behavior of preconsolidated rovings above the thermoplastic matrix{\\textquoteright} melting temperature. This is crucial for capturing the local material structure after processes introducing highly localized deformation such as mechanical joining processes between metal and fiber reinforced thermoplastics (FRTP). A generic finite element (FE) model is developed, incorporating interfaces discretized through either cohesive zone (CZ) elements or Coulomb friction-based contacts. The material parameters for the FE elements are derived from the initial stiffness of a statistical volume element (SVE) at micro scale modelled with an Arbitrary-Lagrange-Eulerian method for three load cases. The CZ properties calculated are based on the shear viscosity of the composite. The CZ and contact modelling approaches are evaluated using three load cases of the SVE, comparing force-displacement curves. Under simple loading conditions, such as normal pressure tension and bending, both methods produce similar results; however, in complex load cases, the CZ approach shows clear advantages in handling interface interactions and shows robust simulations. The CZ approach thus presents a promising method for simulating roving decomposition in FRTP-metal joining applications above the matrix{\\textquoteright} melting temperature."}],"language":[{"iso":"eng"}],"series_title":"Materials Research Proceedings","doi":"10.21741/9781644903551-33","title":"Modeling approaches for the decomposition behavior of preconsolidated rovings throughout local deformation processes","year":"2025","author":[{"first_name":"Benjamin","last_name":"Gröger","full_name":"Gröger, Benjamin"},{"last_name":"Gerritzen","orcid":"0000-0002-0169-8602","first_name":"Johannes","full_name":"Gerritzen, Johannes","id":"105344"},{"last_name":"Hornig","first_name":"Andreas","full_name":"Hornig, Andreas"},{"last_name":"Gude","first_name":"Maik","full_name":"Gude, Maik"}],"publication_identifier":{"isbn":["978-1-64490-354-4"]},"date_updated":"2026-02-27T06:43:19Z","citation":{"mla":"Gröger, Benjamin, et al. “Modeling Approaches for the Decomposition Behavior of Preconsolidated Rovings throughout Local Deformation Processes.” Sheet Metal 2025, edited by G. Meschut et al., Materials Research Forum LLC, Materials Research Foundations, 2025, pp. 268–275, doi:10.21741/9781644903551-33.","ama":"Gröger B, Gerritzen J, Hornig A, Gude M. Modeling approaches for the decomposition behavior of preconsolidated rovings throughout local deformation processes. In: Meschut G, Bobbert M, Duflou J, et al., eds. Sheet Metal 2025. Materials Research Proceedings. Materials Research Forum LLC, Materials Research Foundations; 2025:268–275. doi:10.21741/9781644903551-33","bibtex":"@inproceedings{Gröger_Gerritzen_Hornig_Gude_2025, series={Materials Research Proceedings}, title={Modeling approaches for the decomposition behavior of preconsolidated rovings throughout local deformation processes}, DOI={10.21741/9781644903551-33}, booktitle={Sheet Metal 2025}, publisher={Materials Research Forum LLC, Materials Research Foundations}, author={Gröger, Benjamin and Gerritzen, Johannes and Hornig, Andreas and Gude, Maik}, editor={Meschut, G. and Bobbert, M. and Duflou, J. and Fratini, L. and Hagenah, H. and Martins, P. and Merklein, M. and Micari, F.}, year={2025}, pages={268–275}, collection={Materials Research Proceedings} }","apa":"Gröger, B., Gerritzen, J., Hornig, A., & Gude, M. (2025). Modeling approaches for the decomposition behavior of preconsolidated rovings throughout local deformation processes. In G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. Martins, M. Merklein, & F. Micari (Eds.), Sheet Metal 2025 (pp. 268–275). Materials Research Forum LLC, Materials Research Foundations. https://doi.org/10.21741/9781644903551-33","ieee":"B. Gröger, J. Gerritzen, A. Hornig, and M. Gude, “Modeling approaches for the decomposition behavior of preconsolidated rovings throughout local deformation processes,” in Sheet Metal 2025, 2025, pp. 268–275, doi: 10.21741/9781644903551-33.","chicago":"Gröger, Benjamin, Johannes Gerritzen, Andreas Hornig, and Maik Gude. “Modeling Approaches for the Decomposition Behavior of Preconsolidated Rovings throughout Local Deformation Processes.” In Sheet Metal 2025, edited by G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. Martins, M. Merklein, and F. Micari, 268–275. Materials Research Proceedings. Materials Research Forum LLC, Materials Research Foundations, 2025. https://doi.org/10.21741/9781644903551-33.","short":"B. Gröger, J. Gerritzen, A. Hornig, M. Gude, in: G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. Martins, M. Merklein, F. Micari (Eds.), Sheet Metal 2025, Materials Research Forum LLC, Materials Research Foundations, 2025, pp. 268–275."},"project":[{"name":"TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"},{"name":"TRR 285 - Subproject A03","_id":"137"},{"_id":"131","name":"TRR 285 - Project Area A"}],"page":"268–275","_id":"62079","publisher":"Materials Research Forum LLC, Materials Research Foundations","user_id":"105344","editor":[{"first_name":"G.","last_name":"Meschut","full_name":"Meschut, G."},{"full_name":"Bobbert, M.","last_name":"Bobbert","first_name":"M."},{"full_name":"Duflou, J.","last_name":"Duflou","first_name":"J."},{"full_name":"Fratini, L.","first_name":"L.","last_name":"Fratini"},{"last_name":"Hagenah","first_name":"H.","full_name":"Hagenah, H."},{"last_name":"Martins","first_name":"P.","full_name":"Martins, P."},{"full_name":"Merklein, M.","last_name":"Merklein","first_name":"M."},{"full_name":"Micari, F.","last_name":"Micari","first_name":"F."}],"status":"public"}]