--- _id: '30100' abstract: - lang: eng text: Since the application of mechanical joining methods, such as clinching or riveting, offers a robust solution for the generation of advanced multi-material connections, the use in the field of lightweight designs (e.g. automotive industry) is steadily increasing. Therefore, not only the design of an individual joint is required but also the dimensioning of the entire joining connection is crucial. However, in comparison to thermal joining techniques, such as spot welding, the evaluation of the joints’ resistance against defined requirements (e.g. types of load, minimal amount of load cycles) mainly relies on the consideration of expert knowledge, a few design principles and a small amount of experimental data. Since this generally implies the involvement of several domains, such as the material characterization or the part design, a tremendous amount of data and knowledge is separately generated for a certain dimensioning process. Nevertheless, the lack of formalization and standardization in representing the gained knowledge leads to a difficult and inconsistent reuse, sharing or searching of already existing information. Thus, this contribution presents a specific ontology for the provision of cross-domain knowledge about mechanical joining processes and highlights two potential use cases of this ontology in the design of clinched and pin joints. author: - first_name: Christoph full_name: Zirngibl, Christoph last_name: Zirngibl - first_name: Patricia full_name: Kügler, Patricia last_name: Kügler - first_name: Julian full_name: Popp, Julian last_name: Popp - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Dietmar full_name: Drummer, Dietmar last_name: Drummer - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Sandro full_name: Wartzack, Sandro last_name: Wartzack - first_name: Benjamin full_name: Schleich, Benjamin last_name: Schleich citation: ama: Zirngibl C, Kügler P, Popp J, et al. Provision of cross-domain knowledge in mechanical joining using ontologies. Production Engineering. Published online 2022. doi:10.1007/s11740-022-01117-y apa: Zirngibl, C., Kügler, P., Popp, J., Bielak, C. R., Bobbert, M., Drummer, D., Meschut, G., Wartzack, S., & Schleich, B. (2022). Provision of cross-domain knowledge in mechanical joining using ontologies. Production Engineering. https://doi.org/10.1007/s11740-022-01117-y bibtex: '@article{Zirngibl_Kügler_Popp_Bielak_Bobbert_Drummer_Meschut_Wartzack_Schleich_2022, title={Provision of cross-domain knowledge in mechanical joining using ontologies}, DOI={10.1007/s11740-022-01117-y}, journal={Production Engineering}, publisher={Springer Science and Business Media LLC}, author={Zirngibl, Christoph and Kügler, Patricia and Popp, Julian and Bielak, Christian Roman and Bobbert, Mathias and Drummer, Dietmar and Meschut, Gerson and Wartzack, Sandro and Schleich, Benjamin}, year={2022} }' chicago: Zirngibl, Christoph, Patricia Kügler, Julian Popp, Christian Roman Bielak, Mathias Bobbert, Dietmar Drummer, Gerson Meschut, Sandro Wartzack, and Benjamin Schleich. “Provision of Cross-Domain Knowledge in Mechanical Joining Using Ontologies.” Production Engineering, 2022. https://doi.org/10.1007/s11740-022-01117-y. ieee: 'C. Zirngibl et al., “Provision of cross-domain knowledge in mechanical joining using ontologies,” Production Engineering, 2022, doi: 10.1007/s11740-022-01117-y.' mla: Zirngibl, Christoph, et al. “Provision of Cross-Domain Knowledge in Mechanical Joining Using Ontologies.” Production Engineering, Springer Science and Business Media LLC, 2022, doi:10.1007/s11740-022-01117-y. short: C. Zirngibl, P. Kügler, J. Popp, C.R. Bielak, M. Bobbert, D. Drummer, G. Meschut, S. Wartzack, B. Schleich, Production Engineering (2022). date_created: 2022-02-25T07:19:45Z date_updated: 2023-04-27T07:42:19Z department: - _id: '157' doi: 10.1007/s11740-022-01117-y keyword: - Industrial and Manufacturing Engineering - Mechanical Engineering language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '132' name: 'TRR 285 - B: TRR 285 - Project Area B' - _id: '144' name: 'TRR 285 – B05: TRR 285 - Subproject B05' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '145' name: 'TRR 285 – C01: TRR 285 - Subproject C01' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' publication: Production Engineering publication_identifier: issn: - 0944-6524 - 1863-7353 publication_status: published publisher: Springer Science and Business Media LLC quality_controlled: '1' status: public title: Provision of cross-domain knowledge in mechanical joining using ontologies type: journal_article user_id: '7850' year: '2022' ... --- _id: '34275' abstract: - lang: eng text: Due to economic and ecological requirements and the associated trend towards lightweight construction, mechanical joining technologies like self-piercing riveting are gaining in importance. In addition, the increase in lightweight multi-material joints has led to the development of many different mechanical joining technologies which can only be applied to join a small number of material combinations. This leads to low process efficiency, and in the case of self-piercing riveting, to a large number of required tool changes. Another approach focuses on reacting to changing boundary conditions as well as the creation of customised joints by using adaptive tools, versatile auxiliary joining parts or modified process kinematics. Therefore, this study investigates the influence of increased die-sided kinematics on joint formation in self-piercing riveting process. The aim is to achieve an improvement of the joint properties by superimposing the punch feed. Furthermore, it is intended to reduce required tool changes due to the improved joint design. The investigations were carried out by means of a 2D-axisymmetric numerical simulation model using the LS-Dyna simulation software. After the validation of the process model, the die was extended to include driven die elements. Using the model, different kinematics as well as their effects on the joint formation and the internal stress concentration could be analysed. In principle, the increased actuator technology enabled an increase of the interlock formation for both pure aluminium and multi-material joints consisting of steel and aluminium. However, the resulting process forces were higher during the process phases of punching and spreading. author: - first_name: Fabian full_name: Kappe, Fabian id: '66459' last_name: Kappe - first_name: Simon full_name: Wituschek, Simon last_name: Wituschek - first_name: Vincenzo full_name: de Pascalis, Vincenzo last_name: de Pascalis - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Michael full_name: Lechner, Michael last_name: Lechner - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Kappe F, Wituschek S, de Pascalis V, Bobbert M, Lechner M, Meschut G. Numerical Investigation of the Influence of a Movable Die Base on Joint Formation in Semi-tubular Self-piercing Riveting. In: Materials Design and Applications IV. Springer International Publishing; 2022. doi:10.1007/978-3-031-18130-6_10' apa: Kappe, F., Wituschek, S., de Pascalis, V., Bobbert, M., Lechner, M., & Meschut, G. (2022). Numerical Investigation of the Influence of a Movable Die Base on Joint Formation in Semi-tubular Self-piercing Riveting. In Materials Design and Applications IV. Springer International Publishing. https://doi.org/10.1007/978-3-031-18130-6_10 bibtex: '@inbook{Kappe_Wituschek_de Pascalis_Bobbert_Lechner_Meschut_2022, place={Cham}, title={Numerical Investigation of the Influence of a Movable Die Base on Joint Formation in Semi-tubular Self-piercing Riveting}, DOI={10.1007/978-3-031-18130-6_10}, booktitle={Materials Design and Applications IV}, publisher={Springer International Publishing}, author={Kappe, Fabian and Wituschek, Simon and de Pascalis, Vincenzo and Bobbert, Mathias and Lechner, Michael and Meschut, Gerson}, year={2022} }' chicago: 'Kappe, Fabian, Simon Wituschek, Vincenzo de Pascalis, Mathias Bobbert, Michael Lechner, and Gerson Meschut. “Numerical Investigation of the Influence of a Movable Die Base on Joint Formation in Semi-Tubular Self-Piercing Riveting.” In Materials Design and Applications IV. Cham: Springer International Publishing, 2022. https://doi.org/10.1007/978-3-031-18130-6_10.' ieee: 'F. Kappe, S. Wituschek, V. de Pascalis, M. Bobbert, M. Lechner, and G. Meschut, “Numerical Investigation of the Influence of a Movable Die Base on Joint Formation in Semi-tubular Self-piercing Riveting,” in Materials Design and Applications IV, Cham: Springer International Publishing, 2022.' mla: Kappe, Fabian, et al. “Numerical Investigation of the Influence of a Movable Die Base on Joint Formation in Semi-Tubular Self-Piercing Riveting.” Materials Design and Applications IV, Springer International Publishing, 2022, doi:10.1007/978-3-031-18130-6_10. short: 'F. Kappe, S. Wituschek, V. de Pascalis, M. Bobbert, M. Lechner, G. Meschut, in: Materials Design and Applications IV, Springer International Publishing, Cham, 2022.' date_created: 2022-12-07T15:21:45Z date_updated: 2023-04-27T08:53:09Z department: - _id: '630' - _id: '157' doi: 10.1007/978-3-031-18130-6_10 language: - iso: eng place: Cham project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' publication: Materials Design and Applications IV publication_identifier: isbn: - '9783031181290' - '9783031181306' issn: - 1869-8433 - 1869-8441 publication_status: published publisher: Springer International Publishing quality_controlled: '1' status: public title: Numerical Investigation of the Influence of a Movable Die Base on Joint Formation in Semi-tubular Self-piercing Riveting type: book_chapter user_id: '66459' year: '2022' ... --- _id: '34244' author: - first_name: Fabian full_name: Kappe, Fabian last_name: Kappe - first_name: Christoph full_name: Zirngibl, Christoph last_name: Zirngibl - first_name: Benjamin full_name: Schleich, Benjamin last_name: Schleich - first_name: Mathias full_name: Bobbert, Mathias last_name: Bobbert - first_name: Sandro full_name: Wartzack, Sandro last_name: Wartzack - first_name: Gerson full_name: Meschut, Gerson last_name: Meschut citation: ama: Kappe F, Zirngibl C, Schleich B, Bobbert M, Wartzack S, Meschut G. Determining the influence of different process parameters on the versatile self-piercing riveting process using numerical methods. Journal of Manufacturing Processes. 2022;84:1438-1448. doi:10.1016/j.jmapro.2022.11.019 apa: Kappe, F., Zirngibl, C., Schleich, B., Bobbert, M., Wartzack, S., & Meschut, G. (2022). Determining the influence of different process parameters on the versatile self-piercing riveting process using numerical methods. Journal of Manufacturing Processes, 84, 1438–1448. https://doi.org/10.1016/j.jmapro.2022.11.019 bibtex: '@article{Kappe_Zirngibl_Schleich_Bobbert_Wartzack_Meschut_2022, title={Determining the influence of different process parameters on the versatile self-piercing riveting process using numerical methods}, volume={84}, DOI={10.1016/j.jmapro.2022.11.019}, journal={Journal of Manufacturing Processes}, publisher={Elsevier BV}, author={Kappe, Fabian and Zirngibl, Christoph and Schleich, Benjamin and Bobbert, Mathias and Wartzack, Sandro and Meschut, Gerson}, year={2022}, pages={1438–1448} }' chicago: 'Kappe, Fabian, Christoph Zirngibl, Benjamin Schleich, Mathias Bobbert, Sandro Wartzack, and Gerson Meschut. “Determining the Influence of Different Process Parameters on the Versatile Self-Piercing Riveting Process Using Numerical Methods.” Journal of Manufacturing Processes 84 (2022): 1438–48. https://doi.org/10.1016/j.jmapro.2022.11.019.' ieee: 'F. Kappe, C. Zirngibl, B. Schleich, M. Bobbert, S. Wartzack, and G. Meschut, “Determining the influence of different process parameters on the versatile self-piercing riveting process using numerical methods,” Journal of Manufacturing Processes, vol. 84, pp. 1438–1448, 2022, doi: 10.1016/j.jmapro.2022.11.019.' mla: Kappe, Fabian, et al. “Determining the Influence of Different Process Parameters on the Versatile Self-Piercing Riveting Process Using Numerical Methods.” Journal of Manufacturing Processes, vol. 84, Elsevier BV, 2022, pp. 1438–48, doi:10.1016/j.jmapro.2022.11.019. short: F. Kappe, C. Zirngibl, B. Schleich, M. Bobbert, S. Wartzack, G. Meschut, Journal of Manufacturing Processes 84 (2022) 1438–1448. date_created: 2022-12-06T13:57:46Z date_updated: 2023-04-27T08:53:36Z department: - _id: '157' - _id: '630' doi: 10.1016/j.jmapro.2022.11.019 intvolume: ' 84' keyword: - Industrial and Manufacturing Engineering - Management Science and Operations Research - Strategy and Management language: - iso: eng page: 1438-1448 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' - _id: '132' name: 'TRR 285 - B: TRR 285 - Project Area B' - _id: '144' name: 'TRR 285 – B05: TRR 285 - Subproject B05' publication: Journal of Manufacturing Processes publication_identifier: issn: - 1526-6125 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Determining the influence of different process parameters on the versatile self-piercing riveting process using numerical methods type: journal_article user_id: '66459' volume: 84 year: '2022' ... --- _id: '29858' author: - first_name: Fabian full_name: Kappe, Fabian id: '66459' last_name: Kappe - first_name: Luca full_name: Schadow, Luca last_name: Schadow - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Kappe F, Schadow L, Bobbert M, Meschut G. Increasing flexibility of self-piercing riveting by reducing tool–geometry combinations using cluster analysis in the application of multi-material design. Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications. Published online 2022. doi:10.1177/14644207211070992 apa: Kappe, F., Schadow, L., Bobbert, M., & Meschut, G. (2022). Increasing flexibility of self-piercing riveting by reducing tool–geometry combinations using cluster analysis in the application of multi-material design. Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications. https://doi.org/10.1177/14644207211070992 bibtex: '@article{Kappe_Schadow_Bobbert_Meschut_2022, title={Increasing flexibility of self-piercing riveting by reducing tool–geometry combinations using cluster analysis in the application of multi-material design}, DOI={10.1177/14644207211070992}, journal={Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications}, author={Kappe, Fabian and Schadow, Luca and Bobbert, Mathias and Meschut, Gerson}, year={2022} }' chicago: Kappe, Fabian, Luca Schadow, Mathias Bobbert, and Gerson Meschut. “Increasing Flexibility of Self-Piercing Riveting by Reducing Tool–Geometry Combinations Using Cluster Analysis in the Application of Multi-Material Design.” Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2022. https://doi.org/10.1177/14644207211070992. ieee: 'F. Kappe, L. Schadow, M. Bobbert, and G. Meschut, “Increasing flexibility of self-piercing riveting by reducing tool–geometry combinations using cluster analysis in the application of multi-material design,” Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2022, doi: 10.1177/14644207211070992.' mla: Kappe, Fabian, et al. “Increasing Flexibility of Self-Piercing Riveting by Reducing Tool–Geometry Combinations Using Cluster Analysis in the Application of Multi-Material Design.” Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2022, doi:10.1177/14644207211070992. short: F. Kappe, L. Schadow, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications (2022). date_created: 2022-02-16T09:50:09Z date_updated: 2023-04-27T08:54:33Z department: - _id: '157' - _id: '630' doi: 10.1177/14644207211070992 language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' publication: Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications quality_controlled: '1' status: public title: Increasing flexibility of self-piercing riveting by reducing tool–geometry combinations using cluster analysis in the application of multi-material design type: journal_article user_id: '66459' year: '2022' ... --- _id: '29857' author: - first_name: Fabian full_name: Kappe, Fabian id: '66459' last_name: Kappe - first_name: Simon full_name: Wituschek, Simon last_name: Wituschek - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Kappe F, Wituschek S, Bobbert M, Meschut G. Determining the properties of multi‑range semi‑tubular self‑piercing riveted joints. Production Engineering. Published online 2022. doi:https://doi.org/10.1007/s11740-022-01105-2 apa: Kappe, F., Wituschek, S., Bobbert, M., & Meschut, G. (2022). Determining the properties of multi‑range semi‑tubular self‑piercing riveted joints. Production Engineering. https://doi.org/10.1007/s11740-022-01105-2 bibtex: '@article{Kappe_Wituschek_Bobbert_Meschut_2022, title={Determining the properties of multi‑range semi‑tubular self‑piercing riveted joints}, DOI={https://doi.org/10.1007/s11740-022-01105-2}, journal={Production Engineering}, author={Kappe, Fabian and Wituschek, Simon and Bobbert, Mathias and Meschut, Gerson}, year={2022} }' chicago: Kappe, Fabian, Simon Wituschek, Mathias Bobbert, and Gerson Meschut. “Determining the Properties of Multi‑range Semi‑tubular Self‑piercing Riveted Joints.” Production Engineering, 2022. https://doi.org/10.1007/s11740-022-01105-2. ieee: 'F. Kappe, S. Wituschek, M. Bobbert, and G. Meschut, “Determining the properties of multi‑range semi‑tubular self‑piercing riveted joints,” Production Engineering, 2022, doi: https://doi.org/10.1007/s11740-022-01105-2.' mla: Kappe, Fabian, et al. “Determining the Properties of Multi‑range Semi‑tubular Self‑piercing Riveted Joints.” Production Engineering, 2022, doi:https://doi.org/10.1007/s11740-022-01105-2. short: F. Kappe, S. Wituschek, M. Bobbert, G. Meschut, Production Engineering (2022). date_created: 2022-02-16T09:47:02Z date_updated: 2023-04-27T08:54:21Z department: - _id: '157' - _id: '630' doi: https://doi.org/10.1007/s11740-022-01105-2 language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' publication: Production Engineering quality_controlled: '1' status: public title: Determining the properties of multi‑range semi‑tubular self‑piercing riveted joints type: journal_article user_id: '66459' year: '2022' ... --- _id: '34403' abstract: - lang: eng text: "For a reliable, strength-compliant and fracture-resistant design of components and technical structures and for the prevention of damage cases, both the criteria of strength calculation and fracture mechanics are essential. In contrast to strength calculation the fracture mechanics assumes the existence of cracks which might further propagate due to the operational load. First, the present paper illustrates the general procedure of a fracture mechanical evaluation of fatigue cracks in order to assess practical damage cases. Fracture mechanical fundamentals which are essential for the calculation of the stress intensity factors K\r\n \ I and the experimental determination of fracture mechanical material parameters (e.g. threshold ΔK\r\n \ I,th against fatigue crack growth, crack growth rate curve) are explained in detail. The subsequent fracture mechanical evaluation on the basis of the local stress situation at the crack tip and the fracture mechanical material data is executed for different materials and selected crack problems. Hereby, the main focus is on the material HCT590X as it is the essential material being investigated by TRR285." author: - first_name: Britta full_name: Schramm, Britta id: '4668' last_name: Schramm - first_name: Deborah full_name: Weiß, Deborah id: '45673' last_name: Weiß citation: ama: Schramm B, Weiß D. Fracture mechanical evaluation of the material HCT590X. Materials Testing. 2022;64(10):1437-1449. doi:10.1515/mt-2022-0191 apa: Schramm, B., & Weiß, D. (2022). Fracture mechanical evaluation of the material HCT590X. Materials Testing, 64(10), 1437–1449. https://doi.org/10.1515/mt-2022-0191 bibtex: '@article{Schramm_Weiß_2022, title={Fracture mechanical evaluation of the material HCT590X}, volume={64}, DOI={10.1515/mt-2022-0191}, number={10}, journal={Materials Testing}, publisher={Walter de Gruyter GmbH}, author={Schramm, Britta and Weiß, Deborah}, year={2022}, pages={1437–1449} }' chicago: 'Schramm, Britta, and Deborah Weiß. “Fracture Mechanical Evaluation of the Material HCT590X.” Materials Testing 64, no. 10 (2022): 1437–49. https://doi.org/10.1515/mt-2022-0191.' ieee: 'B. Schramm and D. Weiß, “Fracture mechanical evaluation of the material HCT590X,” Materials Testing, vol. 64, no. 10, pp. 1437–1449, 2022, doi: 10.1515/mt-2022-0191.' mla: Schramm, Britta, and Deborah Weiß. “Fracture Mechanical Evaluation of the Material HCT590X.” Materials Testing, vol. 64, no. 10, Walter de Gruyter GmbH, 2022, pp. 1437–49, doi:10.1515/mt-2022-0191. short: B. Schramm, D. Weiß, Materials Testing 64 (2022) 1437–1449. date_created: 2022-12-13T15:19:58Z date_updated: 2023-04-27T10:20:38Z department: - _id: '143' - _id: '630' doi: 10.1515/mt-2022-0191 intvolume: ' 64' issue: '10' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 1437-1449 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '132' name: 'TRR 285 - B: TRR 285 - Project Area B' - _id: '143' name: 'TRR 285 – B04: TRR 285 - Subproject B04' publication: Materials Testing publication_identifier: issn: - 0025-5300 - 2195-8572 publication_status: published publisher: Walter de Gruyter GmbH quality_controlled: '1' status: public title: Fracture mechanical evaluation of the material HCT590X type: journal_article user_id: '45673' volume: 64 year: '2022' ... --- _id: '34210' abstract: - lang: eng text: The application of the mechanical joining process clinching enables the joining of sheet metals with a wide range of material-thickness configurations, which is of interest in lightweight construction of multi-material structures. Each material-thickness combination results in a joint with its own property profile that is affected differently by variations. Manufacturing process-related effects from preforming steps influence the geometric shape of a clinched joint as well as its load-bearing capacity. During the clinching process high degrees of plastic strain, increased temperatures and high strain rates occur. In this context, a 3D numerical model was developed which can represent the material-specific behaviour during the process chain steps sheet metal forming, joining, and loading phase in order to achieve a high predictive accuracy of the simulation. Besides to the investigation of the prediction accuracy, the extent of the influence of individual modelling aspects such as temperature and strain rate dependency is examined. author: - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Bielak CR, Böhnke M, Bobbert M, Meschut G. Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains. In: The Minerals, Metals &amp; Materials Series. Springer International Publishing; 2022. doi:10.1007/978-3-031-06212-4_15' apa: Bielak, C. R., Böhnke, M., Bobbert, M., & Meschut, G. (2022). Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains. In The Minerals, Metals &amp; Materials Series. Springer International Publishing. https://doi.org/10.1007/978-3-031-06212-4_15 bibtex: '@inbook{Bielak_Böhnke_Bobbert_Meschut_2022, place={Cham}, title={Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains}, DOI={10.1007/978-3-031-06212-4_15}, booktitle={The Minerals, Metals &amp; Materials Series}, publisher={Springer International Publishing}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson}, year={2022} }' chicago: 'Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut. “Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains.” In The Minerals, Metals &amp; Materials Series. Cham: Springer International Publishing, 2022. https://doi.org/10.1007/978-3-031-06212-4_15.' ieee: 'C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains,” in The Minerals, Metals &amp; Materials Series, Cham: Springer International Publishing, 2022.' mla: Bielak, Christian Roman, et al. “Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains.” The Minerals, Metals &amp; Materials Series, Springer International Publishing, 2022, doi:10.1007/978-3-031-06212-4_15. short: 'C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: The Minerals, Metals &amp; Materials Series, Springer International Publishing, Cham, 2022.' date_created: 2022-12-05T20:56:01Z date_updated: 2023-04-27T11:21:52Z doi: 10.1007/978-3-031-06212-4_15 language: - iso: eng place: Cham popular_science: '1' project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' publication: The Minerals, Metals & Materials Series publication_identifier: isbn: - '9783031062117' - '9783031062124' issn: - 2367-1181 - 2367-1696 publication_status: published publisher: Springer International Publishing quality_controlled: '1' status: public title: Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains type: book_chapter user_id: '34782' year: '2022' ... --- _id: '30962' abstract: - lang: eng text: Clinching as a mechanical joining process has become established in many areas of car body. In order to predict relevant properties of clinched joints and to ensure the reliability of the process, it is numerically simulated during the product development process. The prediction accuracy of the simulated process depends on the implemented friction model. Therefore, a new method for determining friction coefficients in sheet metal materials was developed and tested. The aim of this study is the numerical investigation of this experimental method by means of FE simulation. The experimental setup is modelled in a 3D numerical simulation taking into account the process parameters varying in the experiment, such as geometric properties, contact pressure and contact velocity. Furthermore, the contact description of the model is calibrated via the experimentally determined friction coefficients according to clinch-relevant parameter space. It is shown that the assumptions made in the determination of the experimental data in preliminary work are valid. In addition, it is investigated to what extent the standard Coulomb friction model in the FEM can reproduce the results of the experimental method. article_number: '146442072210934' author: - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Bielak CR, Böhnke M, Bobbert M, Meschut G. Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. Published online 2022. doi:10.1177/14644207221093468' apa: 'Bielak, C. R., Böhnke, M., Bobbert, M., & Meschut, G. (2022). Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, Article 146442072210934. https://doi.org/10.1177/14644207221093468' bibtex: '@article{Bielak_Böhnke_Bobbert_Meschut_2022, title={Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process}, DOI={10.1177/14644207221093468}, number={146442072210934}, journal={Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}, publisher={SAGE Publications}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson}, year={2022} }' chicago: 'Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut. “Numerical Investigation of a Friction  Test to Determine the Friction  Coefficients for the Clinching Process.” Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2022. https://doi.org/10.1177/14644207221093468.' ieee: 'C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process,” Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, Art. no. 146442072210934, 2022, doi: 10.1177/14644207221093468.' mla: 'Bielak, Christian Roman, et al. “Numerical Investigation of a Friction  Test to Determine the Friction  Coefficients for the Clinching Process.” Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 146442072210934, SAGE Publications, 2022, doi:10.1177/14644207221093468.' short: 'C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022).' date_created: 2022-04-27T08:58:11Z date_updated: 2023-04-28T11:31:35Z department: - _id: '157' - _id: '630' doi: 10.1177/14644207221093468 keyword: - Mechanical Engineering - General Materials Science language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' publication: 'Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications' publication_identifier: issn: - 1464-4207 - 2041-3076 publication_status: published publisher: SAGE Publications quality_controlled: '1' status: public title: Numerical investigation of a friction test to determine the friction coefficients for the clinching process type: journal_article user_id: '34782' year: '2022' ... --- _id: '34069' article_number: '100133' author: - first_name: Britta full_name: Schramm, Britta id: '4668' last_name: Schramm - first_name: Sven full_name: Martin, Sven id: '38177' last_name: Martin - first_name: Christian full_name: Steinfelder, Christian last_name: Steinfelder - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Alexander full_name: Brosius, Alexander last_name: Brosius - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster - first_name: Thomas full_name: Wallmersperger, Thomas last_name: Wallmersperger - first_name: Julia full_name: Mergheim, Julia last_name: Mergheim citation: ama: 'Schramm B, Martin S, Steinfelder C, et al. A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase. Journal of Advanced Joining Processes. 2022;6. doi:10.1016/j.jajp.2022.100133' apa: 'Schramm, B., Martin, S., Steinfelder, C., Bielak, C. R., Brosius, A., Meschut, G., Tröster, T., Wallmersperger, T., & Mergheim, J. (2022). A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase. Journal of Advanced Joining Processes, 6, Article 100133. https://doi.org/10.1016/j.jajp.2022.100133' bibtex: '@article{Schramm_Martin_Steinfelder_Bielak_Brosius_Meschut_Tröster_Wallmersperger_Mergheim_2022, title={A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase}, volume={6}, DOI={10.1016/j.jajp.2022.100133}, number={100133}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Schramm, Britta and Martin, Sven and Steinfelder, Christian and Bielak, Christian Roman and Brosius, Alexander and Meschut, Gerson and Tröster, Thomas and Wallmersperger, Thomas and Mergheim, Julia}, year={2022} }' chicago: 'Schramm, Britta, Sven Martin, Christian Steinfelder, Christian Roman Bielak, Alexander Brosius, Gerson Meschut, Thomas Tröster, Thomas Wallmersperger, and Julia Mergheim. “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase.” Journal of Advanced Joining Processes 6 (2022). https://doi.org/10.1016/j.jajp.2022.100133.' ieee: 'B. Schramm et al., “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase,” Journal of Advanced Joining Processes, vol. 6, Art. no. 100133, 2022, doi: 10.1016/j.jajp.2022.100133.' mla: 'Schramm, Britta, et al. “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase.” Journal of Advanced Joining Processes, vol. 6, 100133, Elsevier BV, 2022, doi:10.1016/j.jajp.2022.100133.' short: B. Schramm, S. Martin, C. Steinfelder, C.R. Bielak, A. Brosius, G. Meschut, T. Tröster, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes 6 (2022). date_created: 2022-11-14T08:53:49Z date_updated: 2023-04-28T11:30:38Z department: - _id: '143' - _id: '157' doi: 10.1016/j.jajp.2022.100133 intvolume: ' 6' keyword: - Mechanical Engineering - Mechanics of Materials - Engineering (miscellaneous) - Chemical Engineering (miscellaneous) language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '143' name: 'TRR 285 – B04: TRR 285 - Subproject B04' - _id: '140' name: 'TRR 285 – B01: TRR 285 - Subproject B01' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' - _id: '142' name: 'TRR 285 – B03: TRR 285 - Subproject B03' - _id: '139' name: 'TRR 285 – A05: TRR 285 - Subproject A05' publication: Journal of Advanced Joining Processes publication_identifier: issn: - 2666-3309 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: 'A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase' type: journal_article user_id: '34782' volume: 6 year: '2022' ... --- _id: '34068' article_number: '100134' author: - first_name: Britta full_name: Schramm, Britta id: '4668' last_name: Schramm - first_name: Johannes full_name: Friedlein, Johannes last_name: Friedlein - first_name: Benjamin full_name: Gröger, Benjamin last_name: Gröger - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Maik full_name: Gude, Maik last_name: Gude - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Thomas full_name: Wallmersperger, Thomas last_name: Wallmersperger - first_name: Julia full_name: Mergheim, Julia last_name: Mergheim citation: ama: 'Schramm B, Friedlein J, Gröger B, et al. A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process. Journal of Advanced Joining Processes. Published online 2022. doi:10.1016/j.jajp.2022.100134' apa: 'Schramm, B., Friedlein, J., Gröger, B., Bielak, C. R., Bobbert, M., Gude, M., Meschut, G., Wallmersperger, T., & Mergheim, J. (2022). A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process. Journal of Advanced Joining Processes, Article 100134. https://doi.org/10.1016/j.jajp.2022.100134' bibtex: '@article{Schramm_Friedlein_Gröger_Bielak_Bobbert_Gude_Meschut_Wallmersperger_Mergheim_2022, title={A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process}, DOI={10.1016/j.jajp.2022.100134}, number={100134}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Schramm, Britta and Friedlein, Johannes and Gröger, Benjamin and Bielak, Christian Roman and Bobbert, Mathias and Gude, Maik and Meschut, Gerson and Wallmersperger, Thomas and Mergheim, Julia}, year={2022} }' chicago: 'Schramm, Britta, Johannes Friedlein, Benjamin Gröger, Christian Roman Bielak, Mathias Bobbert, Maik Gude, Gerson Meschut, Thomas Wallmersperger, and Julia Mergheim. “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process.” Journal of Advanced Joining Processes, 2022. https://doi.org/10.1016/j.jajp.2022.100134.' ieee: 'B. Schramm et al., “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process,” Journal of Advanced Joining Processes, Art. no. 100134, 2022, doi: 10.1016/j.jajp.2022.100134.' mla: 'Schramm, Britta, et al. “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process.” Journal of Advanced Joining Processes, 100134, Elsevier BV, 2022, doi:10.1016/j.jajp.2022.100134.' short: B. Schramm, J. Friedlein, B. Gröger, C.R. Bielak, M. Bobbert, M. Gude, G. Meschut, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes (2022). date_created: 2022-11-14T08:53:07Z date_updated: 2023-04-28T11:31:03Z department: - _id: '143' - _id: '157' doi: 10.1016/j.jajp.2022.100134 keyword: - Mechanical Engineering - Mechanics of Materials - Engineering (miscellaneous) - Chemical Engineering (miscellaneous) language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '143' name: 'TRR 285 – B04: TRR 285 - Subproject B04' - _id: '139' name: 'TRR 285 – A05: TRR 285 - Subproject A05' - _id: '137' name: 'TRR 285 – A03: TRR 285 - Subproject A03' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' - _id: '142' name: 'TRR 285 – B03: TRR 285 - Subproject B03' publication: Journal of Advanced Joining Processes publication_identifier: issn: - 2666-3309 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: 'A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process' type: journal_article user_id: '34782' year: '2022' ... --- _id: '29951' abstract: - lang: eng text: The components of a body in white consist of many individual thin-walled sheet metal parts, which usually are manufactured in deep-drawing processes. In general, the conditions in a deep-drawing process change due to changing tribology conditions, varying degrees of spring back, or scattering material properties in the sheet blanks, which affects the resulting pre-strain. Mechanical joining processes, especially clinching, are influenced by these process-related pre-strains. The final geometric shape of a clinched joint is affected to a significant level by the prior material deformation when joining with constant process parameters. That leads to a change in the stiffness and force transmission in the clinched joint due to the different geometric dimensions, such as interlock, neck thickness and bottom thickness, which directly affect the load bearing capacity. Here, the influence of the pre-straining in the deep drawing process on the force distribution in clinch points in an automotive assembly is investigated by finite-element models numerically. In further studies, the results are implemented in an optimization tool for designing clinched components. The methodology starts with a pre-straining of metal sheets. This step is followed by 2D rotationally symmetric forming simulations of the joining process. The resulting mesh of each forming simulation is rotated and 3D models are obtained. The clinched joint solid model with pre-strains is used further to determine the joint stiffnesses. With the simulation of the same test set-up with an equivalent point-connector model, the equivalent stiffness for each pre-strain combination is determined. Simulations are performed on a clinched component to assess the influence of pre-strain and sheet thinning on the clinched joint loadings by using the equivalent stiffnesses. The investigations clearly show that for the selected component, the loadings at the clinch points are dependent on the sheet thinning and the stiffnesses due to pre-strain. The magnitude of the influence varies depending on the quantity considered. For example, the shear force is more sensitive to the joint stiffness than to the sheet thinning. author: - first_name: Sven full_name: Martin, Sven id: '38177' last_name: Martin - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Martin S, Bielak CR, Bobbert M, Tröster T, Meschut G. Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area. Production Engineering. Published online 2022. doi:10.1007/s11740-021-01103-w apa: Martin, S., Bielak, C. R., Bobbert, M., Tröster, T., & Meschut, G. (2022). Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area. Production Engineering. https://doi.org/10.1007/s11740-021-01103-w bibtex: '@article{Martin_Bielak_Bobbert_Tröster_Meschut_2022, title={Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area}, DOI={10.1007/s11740-021-01103-w}, journal={Production Engineering}, publisher={Springer Science and Business Media LLC}, author={Martin, Sven and Bielak, Christian Roman and Bobbert, Mathias and Tröster, Thomas and Meschut, Gerson}, year={2022} }' chicago: Martin, Sven, Christian Roman Bielak, Mathias Bobbert, Thomas Tröster, and Gerson Meschut. “Numerical Investigation of the Clinched Joint Loadings Considering the Initial Pre-Strain in the Joining Area.” Production Engineering, 2022. https://doi.org/10.1007/s11740-021-01103-w. ieee: 'S. Martin, C. R. Bielak, M. Bobbert, T. Tröster, and G. Meschut, “Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area,” Production Engineering, 2022, doi: 10.1007/s11740-021-01103-w.' mla: Martin, Sven, et al. “Numerical Investigation of the Clinched Joint Loadings Considering the Initial Pre-Strain in the Joining Area.” Production Engineering, Springer Science and Business Media LLC, 2022, doi:10.1007/s11740-021-01103-w. short: S. Martin, C.R. Bielak, M. Bobbert, T. Tröster, G. Meschut, Production Engineering (2022). date_created: 2022-02-22T12:52:09Z date_updated: 2023-04-28T11:57:22Z department: - _id: '321' - _id: '149' - _id: '630' - _id: '157' doi: 10.1007/s11740-021-01103-w keyword: - Industrial and Manufacturing Engineering - Mechanical Engineering language: - iso: eng main_file_link: - open_access: '1' url: https://link.springer.com/article/10.1007/s11740-021-01103-w oa: '1' project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' - _id: '132' name: 'TRR 285 - B: TRR 285 - Project Area B' - _id: '140' name: 'TRR 285 – B01: TRR 285 - Subproject B01' publication: Production Engineering publication_identifier: issn: - 0944-6524 - 1863-7353 publication_status: published publisher: Springer Science and Business Media LLC quality_controlled: '1' status: public title: Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area type: journal_article user_id: '38177' year: '2022' ... --- _id: '32813' author: - first_name: Sven full_name: Martin, Sven id: '38177' last_name: Martin - first_name: Kristijan full_name: Kurtusic, Kristijan last_name: Kurtusic - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster citation: ama: Martin S, Kurtusic K, Tröster T. Influence of the Surrounding Sheet Geometry on a Clinched Joint. Key Engineering Materials. 2022;927. doi:  https://doi.org/10.4028/p-09md1c apa: Martin, S., Kurtusic, K., & Tröster, T. (2022). Influence of the Surrounding Sheet Geometry on a Clinched Joint. Key Engineering Materials, 927. https://doi.org/  https://doi.org/10.4028/p-09md1c bibtex: '@article{Martin_Kurtusic_Tröster_2022, title={Influence of the Surrounding Sheet Geometry on a Clinched Joint}, volume={927}, DOI={  https://doi.org/10.4028/p-09md1c}, journal={Key Engineering Materials}, author={Martin, Sven and Kurtusic, Kristijan and Tröster, Thomas}, year={2022} }' chicago: Martin, Sven, Kristijan Kurtusic, and Thomas Tröster. “Influence of the Surrounding Sheet Geometry on a Clinched Joint.” Key Engineering Materials 927 (2022). https://doi.org/  https://doi.org/10.4028/p-09md1c. ieee: 'S. Martin, K. Kurtusic, and T. Tröster, “Influence of the Surrounding Sheet Geometry on a Clinched Joint,” Key Engineering Materials, vol. 927, 2022, doi:   https://doi.org/10.4028/p-09md1c.' mla: Martin, Sven, et al. “Influence of the Surrounding Sheet Geometry on a Clinched Joint.” Key Engineering Materials, vol. 927, 2022, doi:  https://doi.org/10.4028/p-09md1c. short: S. Martin, K. Kurtusic, T. Tröster, Key Engineering Materials 927 (2022). conference: end_date: 29.04.2022 location: Braga name: 25th International Conference in Material Forming start_date: 27.04.2022 date_created: 2022-08-15T11:02:37Z date_updated: 2023-04-28T11:58:23Z department: - _id: '321' - _id: '149' - _id: '630' doi: ' https://doi.org/10.4028/p-09md1c' intvolume: ' 927' language: - iso: eng main_file_link: - open_access: '1' url: https://www.scientific.net/KEM.926.1505 oa: '1' project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '132' name: 'TRR 285 - B: TRR 285 - Project Area B' - _id: '140' name: 'TRR 285 – B01: TRR 285 - Subproject B01' publication: Key Engineering Materials quality_controlled: '1' status: public title: Influence of the Surrounding Sheet Geometry on a Clinched Joint type: journal_article user_id: '38177' volume: 927 year: '2022' ... --- _id: '51192' abstract: - lang: eng text: "\r\nDestructive micrograph analysis (MA) is the standard method for the assessment of clinched joints. However, during the joint preparation for the MA, geometric features of the joint can change due to elastic effects and closing cracks. X-ray computed tomography (CT) is a promising alternative to investigate the joint non-estructively. However, if the material properties of similar joining partners are the same, the CT is not able to correctly resolve surfaces in the joint that are close to or pressing onto each other. These surfaces are relevant for the determination of characteristic dimensions such as neck thickness and undercut. By placing a thin, highly radiopaque tin layer between the joining partners, the interfacial area in the reconstructed volume can be highlighted. In this work, a method for the localisation of the tin layer inside the joint as well as threshold value procedures for the outer joint contour in cross section images are investigated. The measured characteristic dimensions are compared with measured values from MA of the same samples and of samples without tin layer. In addition, possible effects of the tin layer on the joining point characteristics as well as problems of the MA are discussed.\r\n" author: - first_name: Matthias full_name: Busch, Matthias last_name: Busch - first_name: Daniel full_name: Köhler, Daniel last_name: Köhler - first_name: Tino full_name: Hausotte, Tino last_name: Hausotte - first_name: Robert full_name: Kupfer, Robert last_name: Kupfer - first_name: Juliane full_name: Troschitz, Juliane last_name: Troschitz - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: Busch M, Köhler D, Hausotte T, Kupfer R, Troschitz J, Gude M. Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-ray Computed Tomography. e-Journal of Nondestructive Testing. 2022;27(12). doi:10.58286/27519 apa: Busch, M., Köhler, D., Hausotte, T., Kupfer, R., Troschitz, J., & Gude, M. (2022). Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-ray Computed Tomography. E-Journal of Nondestructive Testing, 27(12). https://doi.org/10.58286/27519 bibtex: '@article{Busch_Köhler_Hausotte_Kupfer_Troschitz_Gude_2022, title={Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-ray Computed Tomography}, volume={27}, DOI={10.58286/27519}, number={12}, journal={e-Journal of Nondestructive Testing}, publisher={NDT.net}, author={Busch, Matthias and Köhler, Daniel and Hausotte, Tino and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}, year={2022} }' chicago: Busch, Matthias, Daniel Köhler, Tino Hausotte, Robert Kupfer, Juliane Troschitz, and Maik Gude. “Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-Ray Computed Tomography.” E-Journal of Nondestructive Testing 27, no. 12 (2022). https://doi.org/10.58286/27519. ieee: 'M. Busch, D. Köhler, T. Hausotte, R. Kupfer, J. Troschitz, and M. Gude, “Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-ray Computed Tomography,” e-Journal of Nondestructive Testing, vol. 27, no. 12, 2022, doi: 10.58286/27519.' mla: Busch, Matthias, et al. “Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-Ray Computed Tomography.” E-Journal of Nondestructive Testing, vol. 27, no. 12, NDT.net, 2022, doi:10.58286/27519. short: M. Busch, D. Köhler, T. Hausotte, R. Kupfer, J. Troschitz, M. Gude, E-Journal of Nondestructive Testing 27 (2022). date_created: 2024-02-06T14:59:06Z date_updated: 2025-06-02T20:19:07Z department: - _id: '157' - _id: '43' doi: 10.58286/27519 intvolume: ' 27' issue: '12' language: - iso: eng project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '148' name: 'TRR 285 – C04: TRR 285 - Subproject C04' - _id: '149' name: 'TRR 285 – C05: TRR 285 - Subproject C05' publication: e-Journal of Nondestructive Testing publication_identifier: issn: - 1435-4934 publication_status: published publisher: NDT.net status: public title: Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-ray Computed Tomography type: journal_article user_id: '83408' volume: 27 year: '2022' ... --- _id: '51191' abstract: - lang: ger text: Zur Qualitätssicherung von Clinchpunkten werden häufig ex-situ Methoden, wie etwa Schliffbildanalysen, eingesetzt. Diese ermöglichen jedoch nicht die Berücksichtigung von Phänomenen, die während der Belastung auftreten, da sich nach der Entlastung elastische Deformationen zurückbilden und Risse wieder schließen. Dagegen kann mit der in-situ Computertomographie (CT) der innere Deformationszustand des Clinchpunkts, z.B. während eines Scherzugversuchs, untersucht werden. Hierbei ist es für artgleiche Werkstoffe aufgrund der hohen Pressungen im Clinchpunkt schwierig, die Trennfläche zwischen den Fügepartnern im CT-Scan zu erkennen. Daher wird eine radioopake Zwischenschicht aus Zinn in die Trennfläche eingebracht. In dieser Arbeit wird der Einfluss der Zwischenschicht auf die in-situ CT-Scherzugprüfung untersucht. Hierzu werden sowohl Kraft-Verlängerungs-Kurven als auch die Geometrie der Clinchpunkte während der Belastung verglichen. author: - first_name: Daniel full_name: Köhler, Daniel id: '83408' last_name: Köhler - first_name: Robert full_name: Kupfer, Robert last_name: Kupfer - first_name: Juliane full_name: Troschitz, Juliane last_name: Troschitz - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: 'Köhler D, Kupfer R, Troschitz J, Gude M. Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen. In: Zimmermann M, ed. Tagungsband zur Werkstoffprüfung 2022. ; 2022.' apa: Köhler, D., Kupfer, R., Troschitz, J., & Gude, M. (2022). Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen. In M. Zimmermann (Ed.), Tagungsband zur Werkstoffprüfung 2022. bibtex: '@inproceedings{Köhler_Kupfer_Troschitz_Gude_2022, place={Dresden}, title={Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen}, booktitle={Tagungsband zur Werkstoffprüfung 2022}, author={Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}, editor={Zimmermann, Martina}, year={2022} }' chicago: Köhler, Daniel, Robert Kupfer, Juliane Troschitz, and Maik Gude. “Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen.” In Tagungsband zur Werkstoffprüfung 2022, edited by Martina Zimmermann. Dresden, 2022. ieee: D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen,” in Tagungsband zur Werkstoffprüfung 2022, Dresden, 2022. mla: Köhler, Daniel, et al. “Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen.” Tagungsband zur Werkstoffprüfung 2022, edited by Martina Zimmermann, 2022. short: 'D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: M. Zimmermann (Ed.), Tagungsband zur Werkstoffprüfung 2022, Dresden, 2022.' conference: end_date: 2022-10-28 location: Dresden name: 40. Vortrags- und Diskussionstagung "Werkstoffprüfung 2022" start_date: 2022-10-27 date_created: 2024-02-06T14:57:37Z date_updated: 2025-06-02T20:17:55Z department: - _id: '157' - _id: '43' editor: - first_name: Martina full_name: Zimmermann, Martina last_name: Zimmermann language: - iso: ger place: Dresden project: - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '148' name: 'TRR 285 – C04: TRR 285 - Subproject C04' publication: Tagungsband zur Werkstoffprüfung 2022 status: public title: Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen type: conference user_id: '83408' year: '2022' ... --- _id: '51195' author: - first_name: Daniel full_name: Köhler, Daniel last_name: Köhler - first_name: Robert full_name: Kupfer, Robert last_name: Kupfer - first_name: Juliane full_name: Troschitz, Juliane last_name: Troschitz - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: 'Köhler D, Kupfer R, Troschitz J, Gude M. Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes. In: The Minerals, Metals &amp; Materials Series. Springer International Publishing; 2022. doi:10.1007/978-3-031-06212-4_75' apa: Köhler, D., Kupfer, R., Troschitz, J., & Gude, M. (2022). Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes. In The Minerals, Metals &amp; Materials Series. Springer International Publishing. https://doi.org/10.1007/978-3-031-06212-4_75 bibtex: '@inbook{Köhler_Kupfer_Troschitz_Gude_2022, place={Cham}, title={Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes}, DOI={10.1007/978-3-031-06212-4_75}, booktitle={The Minerals, Metals &amp; Materials Series}, publisher={Springer International Publishing}, author={Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}, year={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 The Minerals, Metals &amp; Materials Series. Cham: Springer International Publishing, 2022. https://doi.org/10.1007/978-3-031-06212-4_75.' ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes,” in The Minerals, Metals &amp; Materials Series, Cham: Springer International Publishing, 2022.' mla: Köhler, Daniel, et al. “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes.” The Minerals, Metals &amp; Materials Series, Springer International Publishing, 2022, doi:10.1007/978-3-031-06212-4_75. short: 'D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: The Minerals, Metals &amp; Materials Series, Springer International Publishing, Cham, 2022.' date_created: 2024-02-06T15:03:22Z date_updated: 2025-06-02T20:19:28Z department: - _id: '157' - _id: '43' doi: 10.1007/978-3-031-06212-4_75 language: - iso: eng place: Cham project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '148' name: 'TRR 285 – C04: TRR 285 - Subproject C04' publication: The Minerals, Metals & Materials Series publication_identifier: isbn: - '9783031062117' - '9783031062124' issn: - 2367-1181 - 2367-1696 publication_status: published publisher: Springer International Publishing status: public title: Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes type: book_chapter user_id: '83408' year: '2022' ... --- _id: '51197' abstract: - lang: eng text: Clinching is a cost efficient method for joining components in series production. To assure the clinch point’s quality, the force displacement curve during clinching or the bottom thickness are monitored. The most significant geometrical characteristics of the clinch point, neck thickness and undercut, are usually tested destructively by microsectioning. However, micrograph preparation goes ahead with a resetting of elastic deformations and crack-closing after unloading. To generate a comprehensive knowledge of the clinch point’s inner geometry under load, in-situ computed tomography (CT) and acoustic testing (TDA) can be combined. While the TDA is highly sensitive to the inner state of the clinch point, it could detect critical events like crack development during loading. If such events are indicated, the loading process is stopped and a stepped in-situ CT of the following crack and deformation development is performed. In this paper, the concept is applied to the process of clinching itself, providing a detailed three-dimensional insight in the development of the joining zone. A test set-up is used which allows a stepwise clinching of two aluminium sheets EN AW 6014. Furthermore, this set-up is positioned within a CT system. In order to minimize X-ray absorption, a beryllium cylinder is used within the set-up frame and clinching tools are made from Si3N4. The actuator and sensor necessary for the TDA are integrated in the set-up. In regular process steps, the clinching process is interrupted in order to perform a TDA and a CT scan. In order to enhance the visibility of the interface, a thin tin layer is positioned between the sheets prior clinching. It is shown, that the test-set up allows a monitoring of the dynamic behaviour of the specimen during clinching while the CT scans visualize the inner geometry and material flow non-destructively. author: - first_name: Daniel full_name: Köhler, Daniel last_name: Köhler - first_name: Richard full_name: Stephan, Richard last_name: Stephan - first_name: Robert full_name: Kupfer, Robert last_name: Kupfer - first_name: Juliane full_name: Troschitz, Juliane last_name: Troschitz - first_name: Alexander full_name: Brosius, Alexander last_name: Brosius - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: Köhler D, Stephan R, Kupfer R, Troschitz J, Brosius A, Gude M. Investigations on Combined &lt;i&gt;In Situ&lt;/i&gt; CT and Acoustic Analysis during Clinching. Key Engineering Materials. 2022;926:1489-1497. doi:10.4028/p-32330d apa: Köhler, D., Stephan, R., Kupfer, R., Troschitz, J., Brosius, A., & Gude, M. (2022). Investigations on Combined &lt;i&gt;In Situ&lt;/i&gt; CT and Acoustic Analysis during Clinching. Key Engineering Materials, 926, 1489–1497. https://doi.org/10.4028/p-32330d bibtex: '@article{Köhler_Stephan_Kupfer_Troschitz_Brosius_Gude_2022, title={Investigations on Combined &lt;i&gt;In Situ&lt;/i&gt; CT and Acoustic Analysis during Clinching}, volume={926}, DOI={10.4028/p-32330d}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Köhler, Daniel and Stephan, Richard and Kupfer, Robert and Troschitz, Juliane and Brosius, Alexander and Gude, Maik}, year={2022}, pages={1489–1497} }' chicago: 'Köhler, Daniel, Richard Stephan, Robert Kupfer, Juliane Troschitz, Alexander Brosius, and Maik Gude. “Investigations on Combined &lt;I&gt;In Situ&lt;/I&gt; CT and Acoustic Analysis during Clinching.” Key Engineering Materials 926 (2022): 1489–97. https://doi.org/10.4028/p-32330d.' ieee: 'D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, and M. Gude, “Investigations on Combined &lt;i&gt;In Situ&lt;/i&gt; CT and Acoustic Analysis during Clinching,” Key Engineering Materials, vol. 926, pp. 1489–1497, 2022, doi: 10.4028/p-32330d.' mla: Köhler, Daniel, et al. “Investigations on Combined &lt;I&gt;In Situ&lt;/I&gt; CT and Acoustic Analysis during Clinching.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1489–97, doi:10.4028/p-32330d. short: D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, M. Gude, Key Engineering Materials 926 (2022) 1489–1497. date_created: 2024-02-06T15:04:45Z date_updated: 2025-06-02T20:21:13Z department: - _id: '157' - _id: '43' doi: 10.4028/p-32330d intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 1489-1497 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '148' name: 'TRR 285 – C04: TRR 285 - Subproject C04' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. status: public title: Investigations on Combined <i>In Situ</i> CT and Acoustic Analysis during Clinching type: journal_article user_id: '83408' volume: 926 year: '2022' ... --- _id: '63829' abstract: - lang: eng text: 'The 3D shear deformation and failure behaviour of a glass fibre reinforced polypropylene in a shear strain rate range of γ˙=2.2×10−4 to 3.4 1s is investigated. An Iosipescu testing setup on a servo-hydraulic high speed testing unit is used to experimentally characterise the in-plane and out-of-plane behaviour utilising three specimen configurations (12-, 13- and 31-direction). The experimental procedure as well as the testing results are presented and discussed. The measured shear stress–shear strain relations indicate a highly nonlinear behaviour and a distinct rate dependency. Two methods are investigated to derive according material characteristics: a classical engineering approach based on moduli and strengths and a data driven approach based on the curve progression. In all cases a Johnson–Cook based formulation is used to describe rate dependency. The analysis methodologies as well as the derived model parameters are described and discussed in detail. It is shown that a phenomenologically enhanced regression can be used to obtain material characteristics for a generalising constitutive model based on the data driven approach.' article_number: '318' article_type: original author: - first_name: Johannes full_name: Gerritzen, Johannes id: '105344' last_name: Gerritzen orcid: 0000-0002-0169-8602 - first_name: Andreas full_name: Hornig, Andreas last_name: Hornig - first_name: Benjamin full_name: Gröger, Benjamin last_name: Gröger - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: 'Gerritzen J, Hornig A, Gröger B, Gude M. A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters. Journal of Composites Science. 2022;6(10). doi:10.3390/jcs6100318' apa: 'Gerritzen, J., Hornig, A., Gröger, B., & Gude, M. (2022). A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters. Journal of Composites Science, 6(10), Article 318. https://doi.org/10.3390/jcs6100318' bibtex: '@article{Gerritzen_Hornig_Gröger_Gude_2022, title={A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters}, volume={6}, DOI={10.3390/jcs6100318}, number={10318}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Gerritzen, Johannes and Hornig, Andreas and Gröger, Benjamin and Gude, Maik}, year={2022} }' chicago: 'Gerritzen, Johannes, Andreas Hornig, Benjamin Gröger, and Maik Gude. “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters.” Journal of Composites Science 6, no. 10 (2022). https://doi.org/10.3390/jcs6100318.' ieee: 'J. Gerritzen, A. Hornig, B. Gröger, and M. Gude, “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters,” Journal of Composites Science, vol. 6, no. 10, Art. no. 318, 2022, doi: 10.3390/jcs6100318.' mla: 'Gerritzen, Johannes, et al. “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters.” Journal of Composites Science, vol. 6, no. 10, 318, MDPI AG, 2022, doi:10.3390/jcs6100318.' short: J. Gerritzen, A. Hornig, B. Gröger, M. Gude, Journal of Composites Science 6 (2022). date_created: 2026-02-02T08:41:00Z date_updated: 2026-02-27T06:47:18Z doi: 10.3390/jcs6100318 intvolume: ' 6' issue: '10' language: - iso: eng project: - _id: '137' name: TRR 285 - Subproject A03 - _id: '131' name: TRR 285 - Project Area A - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Journal of Composites Science publication_identifier: issn: - 2504-477X publication_status: published publisher: MDPI AG status: public title: 'A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters' type: journal_article user_id: '105344' volume: 6 year: '2022' ... --- _id: '30647' abstract: - lang: eng text: The increasing economic and ecological demands on the mobility sector require efforts to reduce resource consumption in both the production and utilization phases. The use of lightweight construction technologies can save material and increase energy efficiency during operation. Multi-material systems consisting of different materials and geometries are used to achieve weight reduction. Since conventional joining processes reach their limits in the connection of these components, new methods and technologies are necessary in order to be able to react versatilely to varying process and disturbance variables. For fundamental investigations of new possibilities in joining technology, numerical investigations are helpful to identify process parameters. To generate valid results, robust and efficient material models are developed which are adapted to the requirements of versatile joining technologies, for instance to the high plastic strains associated with self-piercing riveting. To describe the inherent strain-induced plastic orthotropy of sheet metal an anisotropic Hill-plasticity model is formulated. Tensile tests for different sheet orientations are conducted both experimentally and numerically to adjust the anisotropic material parameters by inverse parameter identification for aluminium EN AW-6014 and steel HCT590X. Then, the layer compression test is used to validate the model and the previously identified parameters. author: - first_name: J. full_name: Friedlein, J. last_name: Friedlein - first_name: S. full_name: Wituschek, S. last_name: Wituschek - first_name: M. full_name: Lechner, M. last_name: Lechner - first_name: J. full_name: Mergheim, J. last_name: Mergheim - first_name: P. full_name: Steinmann, P. last_name: Steinmann citation: ama: 'Friedlein J, Wituschek S, Lechner M, Mergheim J, Steinmann P. Inverse parameter identification of an anisotropic plasticity model for sheet metal. IOP Conference Series: Materials Science and Engineering. 2021;1157:012004. doi:10.1088/1757-899X/1157/1/012004' apa: 'Friedlein, J., Wituschek, S., Lechner, M., Mergheim, J., & Steinmann, P. (2021). Inverse parameter identification of an anisotropic plasticity model for sheet metal. IOP Conference Series: Materials Science and Engineering, 1157, 012004. https://doi.org/10.1088/1757-899X/1157/1/012004' bibtex: '@article{Friedlein_Wituschek_Lechner_Mergheim_Steinmann_2021, title={Inverse parameter identification of an anisotropic plasticity model for sheet metal}, volume={1157}, DOI={10.1088/1757-899X/1157/1/012004}, journal={IOP Conference Series: Materials Science and Engineering}, author={Friedlein, J. and Wituschek, S. and Lechner, M. and Mergheim, J. and Steinmann, P.}, year={2021}, pages={012004} }' chicago: 'Friedlein, J., S. Wituschek, M. Lechner, J. Mergheim, and P. Steinmann. “Inverse Parameter Identification of an Anisotropic Plasticity Model for Sheet Metal.” IOP Conference Series: Materials Science and Engineering 1157 (2021): 012004. https://doi.org/10.1088/1757-899X/1157/1/012004.' ieee: 'J. Friedlein, S. Wituschek, M. Lechner, J. Mergheim, and P. Steinmann, “Inverse parameter identification of an anisotropic plasticity model for sheet metal,” IOP Conference Series: Materials Science and Engineering, vol. 1157, p. 012004, 2021, doi: 10.1088/1757-899X/1157/1/012004.' mla: 'Friedlein, J., et al. “Inverse Parameter Identification of an Anisotropic Plasticity Model for Sheet Metal.” IOP Conference Series: Materials Science and Engineering, vol. 1157, 2021, p. 012004, doi:10.1088/1757-899X/1157/1/012004.' short: 'J. Friedlein, S. Wituschek, M. Lechner, J. Mergheim, P. Steinmann, IOP Conference Series: Materials Science and Engineering 1157 (2021) 012004.' date_created: 2022-03-28T12:42:10Z date_updated: 2022-03-29T12:45:57Z doi: 10.1088/1757-899X/1157/1/012004 intvolume: ' 1157' language: - iso: eng page: '012004' project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '139' name: 'TRR 285 – A05: TRR 285 - Subproject A05' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' publication: 'IOP Conference Series: Materials Science and Engineering' status: public title: Inverse parameter identification of an anisotropic plasticity model for sheet metal type: journal_article user_id: '68518' volume: 1157 year: '2021' ... --- _id: '30645' abstract: - lang: eng text: As a new and innovative processing method for fabrication for fiber-reinforced thermoplastic composites (CFRTs), the feasibility of ultrasonic welding technology was proven in several studies. This method offers potential for the direct manufacturing of CFRT–metal structures via embedded pin structures. Despite the previous studies, a deeper understanding of the process of energy input and whether fibers work as energy directors and consequently can, in combination with chosen processing parameters, influence the consolidation quality of the CFRTs, is still unknown. Consequently, the aim of this work is to establish a deeper process understanding of the ultrasonic direct impregnation of fiber-reinforced thermoplastics with an emphasis on the fiber’s function as energy directors. Based on the generated insights, a better assessment of the feasibility of direct, hybrid part manufacturing is possible. The produced samples were primarily evaluated by optical and mechanical test methods. It is demonstrated that with higher welding time and amplitude, a better consolidation quality can be achieved and that independent of the process parameters chosen in this study, no significant fiber breakage occurs. This is interpreted as a sign of a gentle impregnation process. Furthermore, based on the examination of single roving and 5-layer set-ups, it is shown that the glass fibers function as energy directors and can influence the transformation of sonic energy into thermal energy. In comparison to industrially available CFRT material, the mechanical properties are weaker, but materials and processes offer potential for significant improvement. Based on these findings, proposals for a direct impregnation and joining process are made. author: - first_name: J. full_name: Popp, J. last_name: Popp - first_name: M. full_name: Wolf, M. last_name: Wolf - first_name: T. full_name: Mattner, T. last_name: Mattner - first_name: D. full_name: Drummer, D. last_name: Drummer citation: ama: Popp J, Wolf M, Mattner T, Drummer D. Energy direction in ultrasonic impregnation of continuous fiber-reinforced thermoplastics. Journal of Composites Science. 2021;5:239. doi:10.3390/jcs5090239 apa: Popp, J., Wolf, M., Mattner, T., & Drummer, D. (2021). Energy direction in ultrasonic impregnation of continuous fiber-reinforced thermoplastics. Journal of Composites Science, 5, 239. https://doi.org/10.3390/jcs5090239 bibtex: '@article{Popp_Wolf_Mattner_Drummer_2021, title={Energy direction in ultrasonic impregnation of continuous fiber-reinforced thermoplastics}, volume={5}, DOI={10.3390/jcs5090239}, journal={Journal of Composites Science}, author={Popp, J. and Wolf, M. and Mattner, T. and Drummer, D.}, year={2021}, pages={239} }' chicago: 'Popp, J., M. Wolf, T. Mattner, and D. Drummer. “Energy Direction in Ultrasonic Impregnation of Continuous Fiber-Reinforced Thermoplastics.” Journal of Composites Science 5 (2021): 239. https://doi.org/10.3390/jcs5090239.' ieee: 'J. Popp, M. Wolf, T. Mattner, and D. Drummer, “Energy direction in ultrasonic impregnation of continuous fiber-reinforced thermoplastics,” Journal of Composites Science, vol. 5, p. 239, 2021, doi: 10.3390/jcs5090239.' mla: Popp, J., et al. “Energy Direction in Ultrasonic Impregnation of Continuous Fiber-Reinforced Thermoplastics.” Journal of Composites Science, vol. 5, 2021, p. 239, doi:10.3390/jcs5090239. short: J. Popp, M. Wolf, T. Mattner, D. Drummer, Journal of Composites Science 5 (2021) 239. date_created: 2022-03-28T12:25:45Z date_updated: 2022-03-29T12:43:36Z doi: 10.3390/jcs5090239 intvolume: ' 5' language: - iso: eng page: '239' project: - _id: '130' grant_number: '418701707' 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' publication: Journal of Composites Science status: public title: Energy direction in ultrasonic impregnation of continuous fiber-reinforced thermoplastics type: journal_article user_id: '68518' volume: 5 year: '2021' ... --- _id: '30643' abstract: - lang: eng text: The multi-material design and the adaptability of a modern process chain require joining connections with specifically adjustable mechanical, thermal, chemical, or electrical properties. Previous considerations primarily focused on the mechanical properties. The multitude of possible combinations of requirements, materials, and component- and joining-geometry makes an empirical determination of these joining properties for the clinching process impossible. Based on the established and empirical procedure, there is currently no model that takes into account all questions of joinability—i.e., the materials (suitability for joining), design (security of joining), and production (joining possibility)—that allows a calculation of the properties that can be achieved. It is therefore necessary to describe the physical properties of the joint as a function of the three binding mechanisms—form closure, force closure, and material closure—in relation to the application. This approach illustrates the relationships along the causal chain “joint requirement-binding mechanism-joining parameters” and improves the adaptability of the mechanical joining technology. Geometrical properties of clinch connections of the combination of aluminum and steel are compared in a metallographic cross-section. The mechanical stress state of the rotationally symmetrical clinch points is qualified with a torsion test and by measuring the electrical resistance in the base material, in the clinch joint, and during the production cycle (after clinching, before precipitation hardening and after precipitation hardening). author: - first_name: J. full_name: Kalich, J. last_name: Kalich - first_name: U. full_name: Füssel, U. last_name: Füssel citation: ama: Kalich J, Füssel U. Influence of the production process on the binding mechanism of clinched aluminum steel mixed compounds. Journal of Manufacturing and Materials Processing. 2021;5:105. doi:10.3390/jmmp5040105 apa: Kalich, J., & Füssel, U. (2021). Influence of the production process on the binding mechanism of clinched aluminum steel mixed compounds. Journal of Manufacturing and Materials Processing, 5, 105. https://doi.org/10.3390/jmmp5040105 bibtex: '@article{Kalich_Füssel_2021, title={Influence of the production process on the binding mechanism of clinched aluminum steel mixed compounds}, volume={5}, DOI={10.3390/jmmp5040105}, journal={Journal of Manufacturing and Materials Processing}, author={Kalich, J. and Füssel, U.}, year={2021}, pages={105} }' chicago: 'Kalich, J., and U. Füssel. “Influence of the Production Process on the Binding Mechanism of Clinched Aluminum Steel Mixed Compounds.” Journal of Manufacturing and Materials Processing 5 (2021): 105. https://doi.org/10.3390/jmmp5040105.' ieee: 'J. Kalich and U. Füssel, “Influence of the production process on the binding mechanism of clinched aluminum steel mixed compounds,” Journal of Manufacturing and Materials Processing, vol. 5, p. 105, 2021, doi: 10.3390/jmmp5040105.' mla: Kalich, J., and U. Füssel. “Influence of the Production Process on the Binding Mechanism of Clinched Aluminum Steel Mixed Compounds.” Journal of Manufacturing and Materials Processing, vol. 5, 2021, p. 105, doi:10.3390/jmmp5040105. short: J. Kalich, U. Füssel, Journal of Manufacturing and Materials Processing 5 (2021) 105. date_created: 2022-03-28T12:22:53Z date_updated: 2022-03-29T12:41:44Z doi: 10.3390/jmmp5040105 intvolume: ' 5' language: - iso: eng page: '105' project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '138' name: 'TRR 285 – A04: TRR 285 - Subproject A04' publication: Journal of Manufacturing and Materials Processing status: public title: Influence of the production process on the binding mechanism of clinched aluminum steel mixed compounds type: journal_article user_id: '68518' volume: 5 year: '2021' ...