[{"publication":"Journal of Advanced Joining Processes","type":"journal_article","abstract":[{"text":"Mechanical joining technologies are increasingly used in multi-material lightweight constructions and offer opportunities to create versatile joining processes due to their low heat input, robustness to metallurgical incompatibilities and various process variants. They can be categorised into technologies which require an auxiliary joining element, or do not require an auxiliary joining element. A typical example for a mechanical joining process with auxiliary joining element is self-piercing riveting. A wide range of processes exist which are not requiring an auxiliary joining element. This allows both point-shaped (e.g., by clinching) and line-shaped (e.g., friction stir welding) joints to be produced. In order to achieve versatile processes, challenges exist in particular in the creation of intervention possibilities in the process and the understanding and handling of materials that are difficult to join, such as fiber reinforced plastics (FRP) or high-strength metals. In addition, predictive capability is required, which in particular requires accurate process simulation. Finally, the processes must be measured non-destructively in order to generate control variables in the process or to investigate the cause-effect relationship. This paper covers the state of the art in scientific research concerning mechanical joining and discusses future challenges on the way to versatile mechanical joining processes.","lang":"eng"}],"status":"public","_id":"34216","project":[{"grant_number":"418701707","name":"TRR 285: TRR 285","_id":"130"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"},{"name":"TRR 285 – A04: TRR 285 - Subproject A04","_id":"138"},{"_id":"137","name":"TRR 285 – A03: TRR 285 - Subproject A03"},{"name":"TRR 285 - B: TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"145","name":"TRR 285 – C01: TRR 285 - Subproject C01"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"},{"name":"TRR 285 – C03: TRR 285 - Subproject C03","_id":"147"},{"name":"TRR 285 – C04: TRR 285 - Subproject C04","_id":"148"}],"department":[{"_id":"157"},{"_id":"156"},{"_id":"9"}],"user_id":"66459","keyword":["Mechanical Engineering","Mechanics of Materials","Engineering (miscellaneous)","Chemical Engineering (miscellaneous)"],"article_number":"100113","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2666-3309"]},"quality_controlled":"1","publication_status":"published","year":"2022","intvolume":" 5","citation":{"ieee":"G. Meschut et al., “Review on mechanical joining by plastic deformation,” Journal of Advanced Joining Processes, vol. 5, Art. no. 100113, 2022, doi: 10.1016/j.jajp.2022.100113.","chicago":"Meschut, Gerson, M. Merklein, A. Brosius, D. Drummer, L. Fratini, U. Füssel, M. Gude, et al. “Review on Mechanical Joining by Plastic Deformation.” Journal of Advanced Joining Processes 5 (2022). https://doi.org/10.1016/j.jajp.2022.100113.","ama":"Meschut G, Merklein M, Brosius A, et al. Review on mechanical joining by plastic deformation. Journal of Advanced Joining Processes. 2022;5. doi:10.1016/j.jajp.2022.100113","short":"G. Meschut, M. Merklein, A. Brosius, D. Drummer, L. Fratini, U. Füssel, M. Gude, W. Homberg, P.A.F. Martins, M. Bobbert, M. Lechner, R. Kupfer, B. Gröger, D. Han, J. Kalich, F. Kappe, T. Kleffel, D. Köhler, C.-M. Kuball, J. Popp, D. Römisch, J. Troschitz, C. Wischer, S. Wituschek, M. Wolf, Journal of Advanced Joining Processes 5 (2022).","bibtex":"@article{Meschut_Merklein_Brosius_Drummer_Fratini_Füssel_Gude_Homberg_Martins_Bobbert_et al._2022, title={Review on mechanical joining by plastic deformation}, volume={5}, DOI={10.1016/j.jajp.2022.100113}, number={100113}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Meschut, Gerson and Merklein, M. and Brosius, A. and Drummer, D. and Fratini, L. and Füssel, U. and Gude, M. and Homberg, Werner and Martins, P.A.F. and Bobbert, Mathias and et al.}, year={2022} }","mla":"Meschut, Gerson, et al. “Review on Mechanical Joining by Plastic Deformation.” Journal of Advanced Joining Processes, vol. 5, 100113, Elsevier BV, 2022, doi:10.1016/j.jajp.2022.100113.","apa":"Meschut, G., Merklein, M., Brosius, A., Drummer, D., Fratini, L., Füssel, U., Gude, M., Homberg, W., Martins, P. A. F., Bobbert, M., Lechner, M., Kupfer, R., Gröger, B., Han, D., Kalich, J., Kappe, F., Kleffel, T., Köhler, D., Kuball, C.-M., … Wolf, M. (2022). Review on mechanical joining by plastic deformation. Journal of Advanced Joining Processes, 5, Article 100113. https://doi.org/10.1016/j.jajp.2022.100113"},"date_updated":"2023-04-27T08:52:38Z","publisher":"Elsevier BV","volume":5,"date_created":"2022-12-05T21:24:49Z","author":[{"orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056","full_name":"Meschut, Gerson","first_name":"Gerson"},{"full_name":"Merklein, M.","last_name":"Merklein","first_name":"M."},{"last_name":"Brosius","full_name":"Brosius, A.","first_name":"A."},{"first_name":"D.","full_name":"Drummer, D.","last_name":"Drummer"},{"first_name":"L.","full_name":"Fratini, L.","last_name":"Fratini"},{"first_name":"U.","last_name":"Füssel","full_name":"Füssel, U."},{"full_name":"Gude, M.","last_name":"Gude","first_name":"M."},{"first_name":"Werner","id":"233","full_name":"Homberg, Werner","last_name":"Homberg"},{"full_name":"Martins, P.A.F.","last_name":"Martins","first_name":"P.A.F."},{"first_name":"Mathias","last_name":"Bobbert","id":"7850","full_name":"Bobbert, Mathias"},{"full_name":"Lechner, M.","last_name":"Lechner","first_name":"M."},{"first_name":"R.","last_name":"Kupfer","full_name":"Kupfer, R."},{"first_name":"B.","full_name":"Gröger, B.","last_name":"Gröger"},{"first_name":"Daxin","full_name":"Han, Daxin","id":"36544","last_name":"Han"},{"last_name":"Kalich","full_name":"Kalich, J.","first_name":"J."},{"last_name":"Kappe","id":"66459","full_name":"Kappe, Fabian","first_name":"Fabian"},{"first_name":"T.","last_name":"Kleffel","full_name":"Kleffel, T."},{"first_name":"D.","last_name":"Köhler","full_name":"Köhler, D."},{"last_name":"Kuball","full_name":"Kuball, C.-M.","first_name":"C.-M."},{"first_name":"J.","full_name":"Popp, J.","last_name":"Popp"},{"first_name":"D.","last_name":"Römisch","full_name":"Römisch, D."},{"full_name":"Troschitz, J.","last_name":"Troschitz","first_name":"J."},{"last_name":"Wischer","id":"72219","full_name":"Wischer, Christian","first_name":"Christian"},{"last_name":"Wituschek","full_name":"Wituschek, S.","first_name":"S."},{"first_name":"M.","full_name":"Wolf, M.","last_name":"Wolf"}],"title":"Review on mechanical joining by plastic deformation","doi":"10.1016/j.jajp.2022.100113"},{"user_id":"66459","_id":"34243","project":[{"grant_number":"418701707","name":"TRR 285: TRR 285","_id":"130"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"}],"language":[{"iso":"eng"}],"keyword":["Mechanical Engineering","General Materials Science"],"article_number":"146442072211354","publication":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","type":"journal_article","status":"public","abstract":[{"text":" In view of economic and ecological trends, the concepts for lightweight construction in transport systems are becoming increasingly important. These are frequently applied in the form of multi-material systems, which are characterized by the selective use of materials and geometries. One major challenge in the manufacturing of multi-material systems is the joining of the individual components to form a complete system. Mechanical joining processes such as semi-tubular self-piercing riveting are frequently used for this application but reach their limits concerning the number of combinations of geometry and material. In order to react to the requirements and to increase the versatility of semi-tubular self-pierce riveting, a process combination consisting of a tumbling process and a self-pierce riveting process has been presented previously. This process combination is used in this work to investigate the versatility and to identify the influencing parameters on it. For this purpose, experiments are conducted to identify process-side influence possibilities. The tests are performed with a dual-phase steel aluminum alloy to represent the varying mechanical characteristics of multi-material systems. Furthermore, the initial sheet thicknesses of the joining partners are varied in several steps. In addition to the geometric joint formation used to describe the undercut, the rivet head end position and the residual sheet thickness, the joining process, is also analyzed during the investigations. Further, the innovative joining process is evaluated by comparing it with a conventional self-piercing riveting process. The knowledge obtained represents a basis for the identification and evaluation of the versatility of the process combination. ","lang":"eng"}],"date_created":"2022-12-06T13:51:01Z","author":[{"last_name":"Wituschek","full_name":"Wituschek, Simon","first_name":"Simon"},{"first_name":"Fabian","last_name":"Kappe","full_name":"Kappe, Fabian"},{"first_name":"Gerson","last_name":"Meschut","full_name":"Meschut, Gerson"},{"full_name":"Lechner, Michael","last_name":"Lechner","first_name":"Michael"}],"publisher":"SAGE Publications","date_updated":"2023-04-27T08:54:47Z","doi":"10.1177/14644207221135400","title":"Geometric and mechanical joint characterization of conventionally and tumbled self-piercing riveting joints","publication_identifier":{"issn":["1464-4207","2041-3076"]},"quality_controlled":"1","publication_status":"published","citation":{"chicago":"Wituschek, Simon, Fabian Kappe, Gerson Meschut, and Michael Lechner. “Geometric and Mechanical Joint Characterization of Conventionally  and Tumbled Self-Piercing Riveting Joints.” Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2022. https://doi.org/10.1177/14644207221135400.","ieee":"S. Wituschek, F. Kappe, G. Meschut, and M. Lechner, “Geometric and mechanical joint characterization of conventionally  and tumbled self-piercing riveting joints,” Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, Art. no. 146442072211354, 2022, doi: 10.1177/14644207221135400.","ama":"Wituschek S, Kappe F, Meschut G, Lechner M. Geometric and mechanical joint characterization of conventionally  and tumbled self-piercing riveting joints. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. Published online 2022. doi:10.1177/14644207221135400","bibtex":"@article{Wituschek_Kappe_Meschut_Lechner_2022, title={Geometric and mechanical joint characterization of conventionally  and tumbled self-piercing riveting joints}, DOI={10.1177/14644207221135400}, number={146442072211354}, journal={Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}, publisher={SAGE Publications}, author={Wituschek, Simon and Kappe, Fabian and Meschut, Gerson and Lechner, Michael}, year={2022} }","short":"S. Wituschek, F. Kappe, G. Meschut, M. Lechner, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022).","mla":"Wituschek, Simon, et al. “Geometric and Mechanical Joint Characterization of Conventionally  and Tumbled Self-Piercing Riveting Joints.” Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 146442072211354, SAGE Publications, 2022, doi:10.1177/14644207221135400.","apa":"Wituschek, S., Kappe, F., Meschut, G., & Lechner, M. (2022). Geometric and mechanical joint characterization of conventionally  and tumbled self-piercing riveting joints. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, Article 146442072211354. https://doi.org/10.1177/14644207221135400"},"year":"2022"},{"publication_status":"published","publication_identifier":{"issn":["1438-1656","1527-2648"]},"quality_controlled":"1","issue":"10","year":"2022","citation":{"apa":"Neuser, M., Kappe, F., Ostermeier, J., Krüger, J. T., Bobbert, M., Meschut, G., Schaper, M., & Grydin, O. (2022). Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting. Advanced Engineering Materials, 24(10), Article 2200874. https://doi.org/10.1002/adem.202200874","bibtex":"@article{Neuser_Kappe_Ostermeier_Krüger_Bobbert_Meschut_Schaper_Grydin_2022, title={Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting}, volume={24}, DOI={10.1002/adem.202200874}, number={102200874}, journal={Advanced Engineering Materials}, publisher={Wiley}, author={Neuser, Moritz and Kappe, Fabian and Ostermeier, Jakob and Krüger, Jan Tobias and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko and Grydin, Olexandr}, year={2022} }","short":"M. Neuser, F. Kappe, J. Ostermeier, J.T. Krüger, M. Bobbert, G. Meschut, M. Schaper, O. Grydin, Advanced Engineering Materials 24 (2022).","mla":"Neuser, Moritz, et al. “Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting.” Advanced Engineering Materials, vol. 24, no. 10, 2200874, Wiley, 2022, doi:10.1002/adem.202200874.","chicago":"Neuser, Moritz, Fabian Kappe, Jakob Ostermeier, Jan Tobias Krüger, Mathias Bobbert, Gerson Meschut, Mirko Schaper, and Olexandr Grydin. “Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting.” Advanced Engineering Materials 24, no. 10 (2022). https://doi.org/10.1002/adem.202200874.","ieee":"M. Neuser et al., “Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting,” Advanced Engineering Materials, vol. 24, no. 10, Art. no. 2200874, 2022, doi: 10.1002/adem.202200874.","ama":"Neuser M, Kappe F, Ostermeier J, et al. Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting. Advanced Engineering Materials. 2022;24(10). doi:10.1002/adem.202200874"},"intvolume":" 24","date_updated":"2023-04-27T08:54:57Z","publisher":"Wiley","date_created":"2022-12-06T13:50:32Z","author":[{"first_name":"Moritz","full_name":"Neuser, Moritz","last_name":"Neuser"},{"first_name":"Fabian","last_name":"Kappe","full_name":"Kappe, Fabian"},{"first_name":"Jakob","last_name":"Ostermeier","full_name":"Ostermeier, Jakob"},{"first_name":"Jan Tobias","last_name":"Krüger","full_name":"Krüger, Jan Tobias"},{"full_name":"Bobbert, Mathias","last_name":"Bobbert","first_name":"Mathias"},{"last_name":"Meschut","full_name":"Meschut, Gerson","first_name":"Gerson"},{"full_name":"Schaper, Mirko","last_name":"Schaper","first_name":"Mirko"},{"full_name":"Grydin, Olexandr","last_name":"Grydin","first_name":"Olexandr"}],"volume":24,"title":"Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting","doi":"10.1002/adem.202200874","type":"journal_article","publication":"Advanced Engineering Materials","status":"public","project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285 – C02: TRR 285 - Subproject C02","_id":"146"}],"_id":"34242","user_id":"66459","article_number":"2200874","keyword":["Condensed Matter Physics","General Materials Science"],"language":[{"iso":"eng"}]},{"intvolume":" 12","citation":{"mla":"Oesterwinter, Annika, et al. “Identification of Requirements for FE Modeling of an Adaptive Joining Technology Employing Friction-Spun Joint Connectors (FSJC).” Metals, vol. 12, no. 5, 869, MDPI AG, 2022, doi:10.3390/met12050869.","bibtex":"@article{Oesterwinter_Wischer_Homberg_2022, title={Identification of Requirements for FE Modeling of an Adaptive Joining Technology Employing Friction-Spun Joint Connectors (FSJC)}, volume={12}, DOI={10.3390/met12050869}, number={5869}, journal={Metals}, publisher={MDPI AG}, author={Oesterwinter, Annika and Wischer, Christian and Homberg, Werner}, year={2022} }","short":"A. Oesterwinter, C. Wischer, W. Homberg, Metals 12 (2022).","apa":"Oesterwinter, A., Wischer, C., & Homberg, W. (2022). Identification of Requirements for FE Modeling of an Adaptive Joining Technology Employing Friction-Spun Joint Connectors (FSJC). Metals, 12(5), Article 869. https://doi.org/10.3390/met12050869","ama":"Oesterwinter A, Wischer C, Homberg W. Identification of Requirements for FE Modeling of an Adaptive Joining Technology Employing Friction-Spun Joint Connectors (FSJC). Metals. 2022;12(5). doi:10.3390/met12050869","chicago":"Oesterwinter, Annika, Christian Wischer, and Werner Homberg. “Identification of Requirements for FE Modeling of an Adaptive Joining Technology Employing Friction-Spun Joint Connectors (FSJC).” Metals 12, no. 5 (2022). https://doi.org/10.3390/met12050869.","ieee":"A. Oesterwinter, C. Wischer, and W. Homberg, “Identification of Requirements for FE Modeling of an Adaptive Joining Technology Employing Friction-Spun Joint Connectors (FSJC),” Metals, vol. 12, no. 5, Art. no. 869, 2022, doi: 10.3390/met12050869."},"publication_identifier":{"issn":["2075-4701"]},"publication_status":"published","doi":"10.3390/met12050869","volume":12,"author":[{"id":"44917","full_name":"Oesterwinter, Annika","last_name":"Oesterwinter","first_name":"Annika"},{"first_name":"Christian","id":"72219","full_name":"Wischer, Christian","last_name":"Wischer"},{"first_name":"Werner","last_name":"Homberg","full_name":"Homberg, Werner"}],"date_updated":"2023-04-27T09:39:39Z","status":"public","type":"journal_article","article_number":"869","department":[{"_id":"9"},{"_id":"156"},{"_id":"630"}],"user_id":"83141","_id":"31360","project":[{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"147","name":"TRR 285 – C03: TRR 285 - Subproject C03"},{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"}],"year":"2022","issue":"5","quality_controlled":"1","title":"Identification of Requirements for FE Modeling of an Adaptive Joining Technology Employing Friction-Spun Joint Connectors (FSJC)","date_created":"2022-05-21T17:27:16Z","publisher":"MDPI AG","abstract":[{"lang":"eng","text":"The adaptive joining process employing friction-spun joint connectors (FSJC) is a promising method for the realization of adaptable joints and thus for lightweight construction. In addition to experimental investigations, numerical studies are indispensable tools for its development. Therefore, this paper includes an analysis of boundary conditions for the spatial discretization and mesh modeling techniques, the material modeling, the contact and friction modeling, and the thermal boundary conditions for the finite element (FE) modeling of this joining process. For these investigations, two FE models corresponding to the two process steps were set up and compared with the two related processes of friction stir welding and friction drilling. Regarding the spatial discretization, the Lagrangian approach is not sufficient to represent the deformation that occurs. The Johnson-Cook model is well suited as a material model. The modeling of the contact detection and friction are important research subjects. Coulomb’s law of friction is not adequate to account for the complex friction phenomena of the adaptive joining process. The thermal boundary conditions play a decisive role in heat generation and thus in the material flow of the process. It is advisable to use temperature-dependent parameters and to investigate in detail the influence of radiation in the entire process."}],"publication":"Metals","language":[{"iso":"eng"}],"keyword":["General Materials Science","Metals and Alloys"]},{"abstract":[{"text":"Due to the increasing use of multi-material constructions and the resulting material incompatibilities, mechanical joining technologies are gaining in importance. The reasons for this are the variety of joining possibilities as well as high load-bearing capacities. However, the currently rigid tooling systems cannot react to changing boundary conditions, such as changed sheet thicknesses or strength. For this reason, a large number of specialised joining processes have been developed to expand the range of applications. Using a versatile self-piercing riveting process, multi-material structures are joined in this paper. In this process, a modified tool actuator technology is combined with multi-range capable auxiliary joining parts. The multi-range capability of the rivets is achieved by forming the rivet head onto the respective thickness of the joining part combination without creating a tooling set-up effort. The joints are investigated both experimentally on the basis of joint formation and load-bearing capacity tests as well as by means of numerical simulation. It turned out that all the joints examined could be manufactured according to the defined standards. The load-bearing capacities of the joints are comparable to those of conventionally joined joints. In some cases the joint fails prematurely, which is why lower energy absorptions are obtained. However, the maximum forces achieved are higher than those of conventional joints. Especially in the case of high-strength materials arranged on the die side, the interlock formation is low. In addition, the use of die-sided sheets requires a large deformation of the rivet head protrusion, which leads to an increase in stress and, as a result, to damage if the rivet head. However, a negative influence on the joint load-bearing capacity could be excluded.","lang":"eng"}],"status":"public","type":"journal_article","publication":"Production Engineering","keyword":["Industrial and Manufacturing Engineering","Mechanical Engineering"],"language":[{"iso":"eng"}],"project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"_id":"133","name":"TRR 285 - C: TRR 285 - Project Area C"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"}],"_id":"34241","user_id":"7850","department":[{"_id":"157"},{"_id":"630"}],"year":"2022","citation":{"apa":"Kappe, F., Wituschek, S., Bobbert, M., Lechner, M., & Meschut, G. (2022). Joining of multi-material structures using a versatile self-piercing riveting process. Production Engineering. https://doi.org/10.1007/s11740-022-01151-w","mla":"Kappe, Fabian, et al. “Joining of Multi-Material Structures Using a Versatile Self-Piercing Riveting Process.” Production Engineering, Springer Science and Business Media LLC, 2022, doi:10.1007/s11740-022-01151-w.","short":"F. Kappe, S. Wituschek, M. Bobbert, M. Lechner, G. Meschut, Production Engineering (2022).","bibtex":"@article{Kappe_Wituschek_Bobbert_Lechner_Meschut_2022, title={Joining of multi-material structures using a versatile self-piercing riveting process}, DOI={10.1007/s11740-022-01151-w}, journal={Production Engineering}, publisher={Springer Science and Business Media LLC}, author={Kappe, Fabian and Wituschek, Simon and Bobbert, Mathias and Lechner, Michael and Meschut, Gerson}, year={2022} }","ama":"Kappe F, Wituschek S, Bobbert M, Lechner M, Meschut G. Joining of multi-material structures using a versatile self-piercing riveting process. Production Engineering. Published online 2022. doi:10.1007/s11740-022-01151-w","chicago":"Kappe, Fabian, Simon Wituschek, Mathias Bobbert, Michael Lechner, and Gerson Meschut. “Joining of Multi-Material Structures Using a Versatile Self-Piercing Riveting Process.” Production Engineering, 2022. https://doi.org/10.1007/s11740-022-01151-w.","ieee":"F. Kappe, S. Wituschek, M. Bobbert, M. Lechner, and G. Meschut, “Joining of multi-material structures using a versatile self-piercing riveting process,” Production Engineering, 2022, doi: 10.1007/s11740-022-01151-w."},"publication_status":"published","publication_identifier":{"issn":["0944-6524","1863-7353"]},"quality_controlled":"1","title":"Joining of multi-material structures using a versatile self-piercing riveting process","doi":"10.1007/s11740-022-01151-w","date_updated":"2023-04-27T07:53:58Z","publisher":"Springer Science and Business Media LLC","author":[{"first_name":"Fabian","last_name":"Kappe","id":"66459","full_name":"Kappe, Fabian"},{"first_name":"Simon","last_name":"Wituschek","full_name":"Wituschek, Simon"},{"last_name":"Bobbert","full_name":"Bobbert, Mathias","id":"7850","first_name":"Mathias"},{"last_name":"Lechner","full_name":"Lechner, Michael","first_name":"Michael"},{"first_name":"Gerson","full_name":"Meschut, Gerson","id":"32056","orcid":"0000-0002-2763-1246","last_name":"Meschut"}],"date_created":"2022-12-06T13:50:06Z"},{"user_id":"7850","department":[{"_id":"157"}],"project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"name":"TRR 285 – B05: TRR 285 - Subproject B05","_id":"144"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"145","name":"TRR 285 – C01: TRR 285 - Subproject C01"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"}],"_id":"30100","language":[{"iso":"eng"}],"keyword":["Industrial and Manufacturing Engineering","Mechanical Engineering"],"type":"journal_article","publication":"Production Engineering","status":"public","abstract":[{"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.","lang":"eng"}],"date_created":"2022-02-25T07:19:45Z","author":[{"first_name":"Christoph","full_name":"Zirngibl, Christoph","last_name":"Zirngibl"},{"full_name":"Kügler, Patricia","last_name":"Kügler","first_name":"Patricia"},{"first_name":"Julian","last_name":"Popp","full_name":"Popp, Julian"},{"first_name":"Christian Roman","last_name":"Bielak","full_name":"Bielak, Christian Roman","id":"34782"},{"last_name":"Bobbert","full_name":"Bobbert, Mathias","id":"7850","first_name":"Mathias"},{"last_name":"Drummer","full_name":"Drummer, Dietmar","first_name":"Dietmar"},{"orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056","full_name":"Meschut, Gerson","first_name":"Gerson"},{"first_name":"Sandro","last_name":"Wartzack","full_name":"Wartzack, Sandro"},{"first_name":"Benjamin","last_name":"Schleich","full_name":"Schleich, Benjamin"}],"date_updated":"2023-04-27T07:42:19Z","publisher":"Springer Science and Business Media LLC","doi":"10.1007/s11740-022-01117-y","title":"Provision of cross-domain knowledge in mechanical joining using ontologies","publication_status":"published","quality_controlled":"1","publication_identifier":{"issn":["0944-6524","1863-7353"]},"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","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.","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.","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","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.","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} }","short":"C. Zirngibl, P. Kügler, J. Popp, C.R. Bielak, M. Bobbert, D. Drummer, G. Meschut, S. Wartzack, B. Schleich, Production Engineering (2022)."},"year":"2022"},{"publication_status":"published","publication_identifier":{"issn":["1869-8433","1869-8441"],"isbn":["9783031181290","9783031181306"]},"quality_controlled":"1","year":"2022","place":"Cham","citation":{"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","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.","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} }","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.","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.","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"},"date_updated":"2023-04-27T08:53:09Z","publisher":"Springer International Publishing","author":[{"first_name":"Fabian","id":"66459","full_name":"Kappe, Fabian","last_name":"Kappe"},{"full_name":"Wituschek, Simon","last_name":"Wituschek","first_name":"Simon"},{"last_name":"de Pascalis","full_name":"de Pascalis, Vincenzo","first_name":"Vincenzo"},{"first_name":"Mathias","last_name":"Bobbert","id":"7850","full_name":"Bobbert, Mathias"},{"first_name":"Michael","full_name":"Lechner, Michael","last_name":"Lechner"},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"date_created":"2022-12-07T15:21:45Z","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","type":"book_chapter","publication":"Materials Design and Applications IV","abstract":[{"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.","lang":"eng"}],"status":"public","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285 – C02: TRR 285 - Subproject C02","_id":"146"}],"_id":"34275","user_id":"66459","department":[{"_id":"630"},{"_id":"157"}],"language":[{"iso":"eng"}]},{"page":"1438-1448","intvolume":" 84","citation":{"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} }","short":"F. Kappe, C. Zirngibl, B. Schleich, M. Bobbert, S. Wartzack, G. Meschut, Journal of Manufacturing Processes 84 (2022) 1438–1448.","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.","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","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","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."},"year":"2022","publication_identifier":{"issn":["1526-6125"]},"quality_controlled":"1","publication_status":"published","doi":"10.1016/j.jmapro.2022.11.019","title":"Determining the influence of different process parameters on the versatile self-piercing riveting process using numerical methods","volume":84,"author":[{"first_name":"Fabian","full_name":"Kappe, Fabian","last_name":"Kappe"},{"full_name":"Zirngibl, Christoph","last_name":"Zirngibl","first_name":"Christoph"},{"first_name":"Benjamin","last_name":"Schleich","full_name":"Schleich, Benjamin"},{"first_name":"Mathias","last_name":"Bobbert","full_name":"Bobbert, Mathias"},{"full_name":"Wartzack, Sandro","last_name":"Wartzack","first_name":"Sandro"},{"first_name":"Gerson","last_name":"Meschut","full_name":"Meschut, Gerson"}],"date_created":"2022-12-06T13:57:46Z","publisher":"Elsevier BV","date_updated":"2023-04-27T08:53:36Z","status":"public","publication":"Journal of Manufacturing Processes","type":"journal_article","language":[{"iso":"eng"}],"keyword":["Industrial and Manufacturing Engineering","Management Science and Operations Research","Strategy and Management"],"department":[{"_id":"157"},{"_id":"630"}],"user_id":"66459","_id":"34244","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"name":"TRR 285 – B05: TRR 285 - Subproject B05","_id":"144"}]},{"date_created":"2022-02-16T09:50:09Z","author":[{"last_name":"Kappe","id":"66459","full_name":"Kappe, Fabian","first_name":"Fabian"},{"first_name":"Luca","full_name":"Schadow, Luca","last_name":"Schadow"},{"first_name":"Mathias","last_name":"Bobbert","full_name":"Bobbert, Mathias","id":"7850"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut"}],"date_updated":"2023-04-27T08:54:33Z","doi":"10.1177/14644207211070992","title":"Increasing flexibility of self-piercing riveting by reducing tool–geometry combinations using cluster analysis in the application of multi-material design","quality_controlled":"1","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","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.","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.","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.","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} }","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).","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"},"year":"2022","user_id":"66459","department":[{"_id":"157"},{"_id":"630"}],"project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"}],"_id":"29858","language":[{"iso":"eng"}],"type":"journal_article","publication":"Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications","status":"public"},{"language":[{"iso":"eng"}],"project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"}],"_id":"29857","user_id":"66459","department":[{"_id":"157"},{"_id":"630"}],"status":"public","type":"journal_article","publication":"Production Engineering","title":"Determining the properties of multi‑range semi‑tubular self‑piercing riveted joints","doi":"https://doi.org/10.1007/s11740-022-01105-2","date_updated":"2023-04-27T08:54:21Z","date_created":"2022-02-16T09:47:02Z","author":[{"last_name":"Kappe","id":"66459","full_name":"Kappe, Fabian","first_name":"Fabian"},{"full_name":"Wituschek, Simon","last_name":"Wituschek","first_name":"Simon"},{"first_name":"Mathias","last_name":"Bobbert","id":"7850","full_name":"Bobbert, Mathias"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246"}],"year":"2022","citation":{"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.","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","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} }","short":"F. Kappe, S. Wituschek, M. Bobbert, G. Meschut, Production Engineering (2022).","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.","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"},"quality_controlled":"1"},{"_id":"51192","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"148","name":"TRR 285 – C04: TRR 285 - Subproject C04"},{"name":"TRR 285 – C05: TRR 285 - Subproject C05","_id":"149"}],"department":[{"_id":"157"},{"_id":"43"}],"user_id":"83408","language":[{"iso":"eng"}],"publication":"e-Journal of Nondestructive Testing","type":"journal_article","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"}],"status":"public","publisher":"NDT.net","date_updated":"2025-06-02T20:19:07Z","volume":27,"author":[{"first_name":"Matthias","last_name":"Busch","full_name":"Busch, Matthias"},{"first_name":"Daniel","full_name":"Köhler, Daniel","last_name":"Köhler"},{"last_name":"Hausotte","full_name":"Hausotte, Tino","first_name":"Tino"},{"full_name":"Kupfer, Robert","last_name":"Kupfer","first_name":"Robert"},{"full_name":"Troschitz, Juliane","last_name":"Troschitz","first_name":"Juliane"},{"first_name":"Maik","full_name":"Gude, Maik","last_name":"Gude"}],"date_created":"2024-02-06T14:59:06Z","title":"Approach to Determine the Characteristic Dimensions of Clinched Joints by Industrial X-ray Computed Tomography","doi":"10.58286/27519","publication_identifier":{"issn":["1435-4934"]},"publication_status":"published","issue":"12","year":"2022","intvolume":" 27","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","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.","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.","short":"M. Busch, D. Köhler, T. Hausotte, R. Kupfer, J. Troschitz, M. Gude, E-Journal of Nondestructive Testing 27 (2022).","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} }","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.","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"}},{"_id":"51191","project":[{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 – C04: TRR 285 - Subproject C04","_id":"148"}],"department":[{"_id":"157"},{"_id":"43"}],"user_id":"83408","language":[{"iso":"ger"}],"publication":"Tagungsband zur Werkstoffprüfung 2022","type":"conference","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."}],"editor":[{"first_name":"Martina","full_name":"Zimmermann, Martina","last_name":"Zimmermann"}],"status":"public","date_updated":"2025-06-02T20:17:55Z","date_created":"2024-02-06T14:57:37Z","author":[{"first_name":"Daniel","last_name":"Köhler","full_name":"Köhler, Daniel","id":"83408"},{"full_name":"Kupfer, Robert","last_name":"Kupfer","first_name":"Robert"},{"first_name":"Juliane","full_name":"Troschitz, Juliane","last_name":"Troschitz"},{"last_name":"Gude","full_name":"Gude, Maik","first_name":"Maik"}],"title":"Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen","conference":{"name":"40. Vortrags- und Diskussionstagung \"Werkstoffprüfung 2022\"","start_date":"2022-10-27","end_date":"2022-10-28","location":"Dresden"},"year":"2022","place":"Dresden","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.","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.","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.","short":"D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: M. Zimmermann (Ed.), 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.","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} }"}},{"_id":"51195","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"148","name":"TRR 285 – C04: TRR 285 - Subproject C04"}],"department":[{"_id":"157"},{"_id":"43"}],"user_id":"83408","language":[{"iso":"eng"}],"publication":"The Minerals, Metals & Materials Series","type":"book_chapter","status":"public","date_updated":"2025-06-02T20:19:28Z","publisher":"Springer International Publishing","author":[{"first_name":"Daniel","last_name":"Köhler","full_name":"Köhler, Daniel"},{"full_name":"Kupfer, Robert","last_name":"Kupfer","first_name":"Robert"},{"first_name":"Juliane","last_name":"Troschitz","full_name":"Troschitz, Juliane"},{"last_name":"Gude","full_name":"Gude, Maik","first_name":"Maik"}],"date_created":"2024-02-06T15:03:22Z","title":"Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes","doi":"10.1007/978-3-031-06212-4_75","publication_identifier":{"isbn":["9783031062117","9783031062124"],"issn":["2367-1181","2367-1696"]},"publication_status":"published","place":"Cham","year":"2022","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","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.","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.","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} }","short":"D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: The Minerals, Metals &amp; Materials Series, Springer International Publishing, Cham, 2022.","mla":"Köhler, Daniel, et al. “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes.” The Minerals, Metals &amp; Materials Series, Springer International Publishing, 2022, doi:10.1007/978-3-031-06212-4_75."}},{"title":"Investigations on Combined <i>In Situ</i> CT and Acoustic Analysis during Clinching","doi":"10.4028/p-32330d","publisher":"Trans Tech Publications, Ltd.","date_updated":"2025-06-02T20:21:13Z","author":[{"full_name":"Köhler, Daniel","last_name":"Köhler","first_name":"Daniel"},{"last_name":"Stephan","full_name":"Stephan, Richard","first_name":"Richard"},{"first_name":"Robert","full_name":"Kupfer, Robert","last_name":"Kupfer"},{"full_name":"Troschitz, Juliane","last_name":"Troschitz","first_name":"Juliane"},{"full_name":"Brosius, Alexander","last_name":"Brosius","first_name":"Alexander"},{"first_name":"Maik","last_name":"Gude","full_name":"Gude, Maik"}],"date_created":"2024-02-06T15:04:45Z","volume":926,"year":"2022","citation":{"short":"D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, M. Gude, Key Engineering Materials 926 (2022) 1489–1497.","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.","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} }","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","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.","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"},"page":"1489-1497","intvolume":" 926","publication_status":"published","publication_identifier":{"issn":["1662-9795"]},"keyword":["Mechanical Engineering","Mechanics of Materials","General Materials Science"],"language":[{"iso":"eng"}],"project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285 – C04: TRR 285 - Subproject C04","_id":"148"}],"_id":"51197","user_id":"83408","department":[{"_id":"157"},{"_id":"43"}],"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."}],"status":"public","type":"journal_article","publication":"Key Engineering Materials"},{"title":"Inverse parameter identification of an anisotropic plasticity model for sheet metal","doi":"10.1088/1757-899X/1157/1/012004","date_updated":"2022-03-29T12:45:57Z","author":[{"full_name":"Friedlein, J.","last_name":"Friedlein","first_name":"J."},{"full_name":"Wituschek, S.","last_name":"Wituschek","first_name":"S."},{"first_name":"M.","full_name":"Lechner, M.","last_name":"Lechner"},{"full_name":"Mergheim, J.","last_name":"Mergheim","first_name":"J."},{"last_name":"Steinmann","full_name":"Steinmann, P.","first_name":"P."}],"date_created":"2022-03-28T12:42:10Z","volume":1157,"year":"2021","citation":{"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} }","short":"J. Friedlein, S. Wituschek, M. Lechner, J. Mergheim, P. Steinmann, IOP Conference Series: Materials Science and Engineering 1157 (2021) 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.","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","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","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.","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."},"page":"012004","intvolume":" 1157","language":[{"iso":"eng"}],"project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"_id":"139","name":"TRR 285 – A05: TRR 285 - Subproject A05"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"146","name":"TRR 285 – C02: TRR 285 - Subproject C02"}],"_id":"30647","user_id":"68518","abstract":[{"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.","lang":"eng"}],"status":"public","type":"journal_article","publication":"IOP Conference Series: Materials Science and Engineering"},{"language":[{"iso":"eng"}],"project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"145","name":"TRR 285 – C01: TRR 285 - Subproject C01"}],"_id":"30645","user_id":"68518","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."}],"status":"public","type":"journal_article","publication":"Journal of Composites Science","title":"Energy direction in ultrasonic impregnation of continuous fiber-reinforced thermoplastics","doi":"10.3390/jcs5090239","date_updated":"2022-03-29T12:43:36Z","date_created":"2022-03-28T12:25:45Z","author":[{"last_name":"Popp","full_name":"Popp, J.","first_name":"J."},{"first_name":"M.","full_name":"Wolf, M.","last_name":"Wolf"},{"full_name":"Mattner, T.","last_name":"Mattner","first_name":"T."},{"first_name":"D.","last_name":"Drummer","full_name":"Drummer, D."}],"volume":5,"year":"2021","citation":{"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.","short":"J. Popp, M. Wolf, T. Mattner, D. Drummer, Journal of Composites Science 5 (2021) 239.","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} }","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.","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","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"},"page":"239","intvolume":" 5"},{"type":"journal_article","publication":"IOP Conference Series: Materials Science and Engineering","abstract":[{"text":"Due to increasingly strict emission targets and regulatory requirements, especially for companies in the transport industry, the demand for multi-material-systems is continuously rising in order to lower energy consumption. In this context, mechanical joining processes offer an environmentally friendly and flexible alternative to established joining methods, especially in the field of lightweight design. For example, cold-formed cylindrical pin structures show high potentials in joining multi-material-systems without auxiliary elements. The pin structures are joined either by pressing them directly into the joining partner or by caulking with a pre-punched part. However, to evaluate the strength of the joint and to ensure the joining reliability for versatile processes, such as changing joining partners or batch variations, engineering designers currently have only limited design principles available compared to thermal joining processes. Consequently, the design of an optimal pin joint requires cost- and time-intensive experimental investigations and adjustments to design or process parameters. As a solution, data-driven methods offer procedures for structuring data and identifying dependencies between varying process parameters and resulting pin structure characteristics. Motivated by this, the paper presents an approach for the data-driven analysis of cold-formed pin structures and offers a deeper understanding of how versatile processes affect the pin characteristics. Therefore, the application of an intelligent design of experiment in combination with several machine learning methods enable the setup of a best-fitting meta-model. Resulting, the determination of a mathematical model provides the opportunity to accurately estimate the pin height considering only relevant geometrical and process parameters with a prediction quality of 95 %.","lang":"eng"}],"status":"public","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - B: TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285 – B05: TRR 285 - Subproject B05","_id":"144"},{"_id":"133","name":"TRR 285 - C: TRR 285 - Project Area C"},{"name":"TRR 285 – C01: TRR 285 - Subproject C01","_id":"145"}],"_id":"30650","user_id":"68518","language":[{"iso":"eng"}],"year":"2021","citation":{"mla":"Römisch, D., et al. “Data-Driven Analysis of Cold-Formed Pin Structure Characteristics in the Context of Versatile Joining Processes.” IOP Conference Series: Materials Science and Engineering, vol. 1157, 2021, p. 012077, doi:10.1088/1757-899X/1157/1/012077.","bibtex":"@article{Römisch_Zirngibl_Schleich_Wartzack_Merklein_2021, title={Data-driven analysis of cold-formed pin structure characteristics in the context of versatile joining processes}, volume={1157}, DOI={10.1088/1757-899X/1157/1/012077}, journal={IOP Conference Series: Materials Science and Engineering}, author={Römisch, D. and Zirngibl, C. and Schleich, B. and Wartzack, S. and Merklein, M.}, year={2021}, pages={012077} }","short":"D. Römisch, C. Zirngibl, B. Schleich, S. Wartzack, M. Merklein, IOP Conference Series: Materials Science and Engineering 1157 (2021) 012077.","ama":"Römisch D, Zirngibl C, Schleich B, Wartzack S, Merklein M. Data-driven analysis of cold-formed pin structure characteristics in the context of versatile joining processes. IOP Conference Series: Materials Science and Engineering. 2021;1157:012077. doi:10.1088/1757-899X/1157/1/012077","apa":"Römisch, D., Zirngibl, C., Schleich, B., Wartzack, S., & Merklein, M. (2021). Data-driven analysis of cold-formed pin structure characteristics in the context of versatile joining processes. IOP Conference Series: Materials Science and Engineering, 1157, 012077. https://doi.org/10.1088/1757-899X/1157/1/012077","ieee":"D. Römisch, C. Zirngibl, B. Schleich, S. Wartzack, and M. Merklein, “Data-driven analysis of cold-formed pin structure characteristics in the context of versatile joining processes,” IOP Conference Series: Materials Science and Engineering, vol. 1157, p. 012077, 2021, doi: 10.1088/1757-899X/1157/1/012077.","chicago":"Römisch, D., C. Zirngibl, B. Schleich, S. Wartzack, and M. Merklein. “Data-Driven Analysis of Cold-Formed Pin Structure Characteristics in the Context of Versatile Joining Processes.” IOP Conference Series: Materials Science and Engineering 1157 (2021): 012077. https://doi.org/10.1088/1757-899X/1157/1/012077."},"page":"012077","intvolume":" 1157","date_updated":"2022-03-29T15:45:44Z","date_created":"2022-03-28T12:48:01Z","author":[{"full_name":"Römisch, D.","last_name":"Römisch","first_name":"D."},{"first_name":"C.","full_name":"Zirngibl, C.","last_name":"Zirngibl"},{"first_name":"B.","full_name":"Schleich, B.","last_name":"Schleich"},{"full_name":"Wartzack, S.","last_name":"Wartzack","first_name":"S."},{"full_name":"Merklein, M.","last_name":"Merklein","first_name":"M."}],"volume":1157,"title":"Data-driven analysis of cold-formed pin structure characteristics in the context of versatile joining processes","doi":"10.1088/1757-899X/1157/1/012077"},{"page":"951–972","intvolume":" 28","citation":{"ieee":"J. Popp, T. Kleffel, D. Römisch, T. Papke, M. Merklein, and D. Drummer, “Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins,” Applied Composite Materials, vol. 28, pp. 951–972, 2021, doi: 10.1007/s10443-021-09892-0.","chicago":"Popp, J., T. Kleffel, D. Römisch, T. Papke, M. Merklein, and D. Drummer. “Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins.” Applied Composite Materials 28 (2021): 951–972. https://doi.org/10.1007/s10443-021-09892-0.","ama":"Popp J, Kleffel T, Römisch D, Papke T, Merklein M, Drummer D. Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins. Applied Composite Materials. 2021;28:951–972. doi:10.1007/s10443-021-09892-0","bibtex":"@article{Popp_Kleffel_Römisch_Papke_Merklein_Drummer_2021, title={Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins}, volume={28}, DOI={10.1007/s10443-021-09892-0}, journal={Applied Composite Materials}, author={Popp, J. and Kleffel, T. and Römisch, D. and Papke, T. and Merklein, M. and Drummer, D.}, year={2021}, pages={951–972} }","mla":"Popp, J., et al. “Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins.” Applied Composite Materials, vol. 28, 2021, pp. 951–972, doi:10.1007/s10443-021-09892-0.","short":"J. Popp, T. Kleffel, D. Römisch, T. Papke, M. Merklein, D. Drummer, Applied Composite Materials 28 (2021) 951–972.","apa":"Popp, J., Kleffel, T., Römisch, D., Papke, T., Merklein, M., & Drummer, D. (2021). Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins. Applied Composite Materials, 28, 951–972. https://doi.org/10.1007/s10443-021-09892-0"},"year":"2021","doi":"10.1007/s10443-021-09892-0","title":"Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins","volume":28,"date_created":"2022-03-28T12:53:14Z","author":[{"last_name":"Popp","full_name":"Popp, J.","first_name":"J."},{"first_name":"T.","last_name":"Kleffel","full_name":"Kleffel, T."},{"last_name":"Römisch","full_name":"Römisch, D.","first_name":"D."},{"first_name":"T.","full_name":"Papke, T.","last_name":"Papke"},{"full_name":"Merklein, M.","last_name":"Merklein","first_name":"M."},{"full_name":"Drummer, D.","last_name":"Drummer","first_name":"D."}],"date_updated":"2022-03-29T15:50:53Z","status":"public","abstract":[{"lang":"eng","text":"Continuous Fiber Reinforced Thermoplastic (CFRT) hybrid parts offer interesting possibilities for lightweight application, which can exceed the capabilities of mono material metal or CFRT parts. In this case, the joining technology oftentimes is the limiting factor. This study investigates a joining operation with metal pin structures which are additively manufactured via powder bed fusion featuring different diameters and tip geometries, which are inserted into the locally infrared heated CFRT part. The resulting fiber rearrangement is assessed using transmitted light microscopy, confocal laser scanning microscopy as well as micro-computer-tomography. It could be shown that for all assessed pin variants a similar distinct fiber displacement can be seen and that the pin diameter has a significant effect on the resulting fiber orientation with smaller pin diameters being advantageous because of gentle fiber displacement and reduced undulation. The tip geometry has only minor effect on the fiber orientation. Especially in the X/Y plane no systematic influence of the tip geometry on the fiber displacement could be observed. Based on the gained insights a three-stage model of the fiber orientation processes is proposed."}],"publication":"Applied Composite Materials","type":"journal_article","language":[{"iso":"eng"}],"user_id":"68518","_id":"30653","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"145","name":"TRR 285 – C01: TRR 285 - Subproject C01"}]},{"status":"public","abstract":[{"lang":"eng","text":"Industrial X-ray computed tomography (XCT) is a tool for non-destructive testing and a volumetric analysis method with the ability to measure dimensions and geometry inside a component without destroying it. However, XCT is a relatively young technology in the field of dimensional metrology and thus faces several challenges. The achievement of a high measurement resolution, which is re-quired to detect small geometrical features, depends on a variety of influencing factors. In this arti-cle, the interface structural resolution (ISR) as one of the key challenges will be investigated. The two-sphere standard called the hourglass standard allows the determination of the structural resolu-tion by evaluation of the surrounding area of an ideal point contact of two spheres after the CT re-construction in form of a neck-shaped transition. Close to the contact point of the two spheres two opposing surfaces exist. Their distances from each other increase as the distance from the contact point of the two spheres increase. The determination of the distances between the spheres’ surface allows a statement about the ISR. A new developed specimen or standard with a variable gap size consisting of calibrated parallel gauge blocks allows statements about the ISR, too. Because of the higher number of probing points of the gauge block standard the results of the determined ISR are more stable compared to the hourglass standard. This paper compares the results of the computed tomography measurements for the designed interface structural resolution standard with those of the hourglass standard. "}],"type":"journal_article","publication":"Key Engineering Materials","language":[{"iso":"eng"}],"user_id":"68518","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"_id":"149","name":"TRR 285 – C05: TRR 285 - Subproject C05"}],"_id":"30662","citation":{"ama":"Busch M, Hausotte T. Determination of the Interface Structural Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap Specimen Consisting of Gauge Blocks. Key Engineering Materials. 2021;883:41-48. doi:10.4028/www.scientific.net/kem.883.41","ieee":"M. Busch and T. Hausotte, “Determination of the Interface Structural Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap Specimen Consisting of Gauge Blocks,” Key Engineering Materials, vol. 883, pp. 41–48, 2021, doi: 10.4028/www.scientific.net/kem.883.41.","chicago":"Busch, M., and T. Hausotte. “Determination of the Interface Structural Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap Specimen Consisting of Gauge Blocks.” Key Engineering Materials 883 (2021): 41–48. https://doi.org/10.4028/www.scientific.net/kem.883.41.","mla":"Busch, M., and T. Hausotte. “Determination of the Interface Structural Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap Specimen Consisting of Gauge Blocks.” Key Engineering Materials, vol. 883, 2021, pp. 41–48, doi:10.4028/www.scientific.net/kem.883.41.","short":"M. Busch, T. Hausotte, Key Engineering Materials 883 (2021) 41–48.","bibtex":"@article{Busch_Hausotte_2021, title={Determination of the Interface Structural Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap Specimen Consisting of Gauge Blocks}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.41}, journal={Key Engineering Materials}, author={Busch, M. and Hausotte, T.}, year={2021}, pages={41–48} }","apa":"Busch, M., & Hausotte, T. (2021). Determination of the Interface Structural Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap Specimen Consisting of Gauge Blocks. Key Engineering Materials, 883, 41–48. https://doi.org/10.4028/www.scientific.net/kem.883.41"},"intvolume":" 883","page":"41-48","year":"2021","doi":"10.4028/www.scientific.net/kem.883.41","title":"Determination of the Interface Structural Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap Specimen Consisting of Gauge Blocks","author":[{"full_name":"Busch, M.","last_name":"Busch","first_name":"M."},{"full_name":"Hausotte, T.","last_name":"Hausotte","first_name":"T."}],"date_created":"2022-03-28T13:58:55Z","volume":883,"date_updated":"2022-03-30T07:57:53Z"},{"title":"Clinching in In-situ CT – Experimental Study on Suitable Tool Materials","doi":"10.25518/esaform21.2781","date_updated":"2022-03-29T15:53:46Z","author":[{"full_name":"Köhler, D.","last_name":"Köhler","first_name":"D."},{"full_name":"Kupfer, R.","last_name":"Kupfer","first_name":"R."},{"full_name":"Troschitz, J.","last_name":"Troschitz","first_name":"J."},{"full_name":"Gude, M.","last_name":"Gude","first_name":"M."}],"date_created":"2022-03-28T13:39:26Z","year":"2021","citation":{"bibtex":"@article{Köhler_Kupfer_Troschitz_Gude_2021, title={Clinching in In-situ CT – Experimental Study on Suitable Tool Materials}, DOI={10.25518/esaform21.2781}, journal={ESAFORM 2021}, author={Köhler, D. and Kupfer, R. and Troschitz, J. and Gude, M.}, year={2021} }","short":"D. Köhler, R. Kupfer, J. Troschitz, M. Gude, ESAFORM 2021 (2021).","mla":"Köhler, D., et al. “Clinching in In-Situ CT – Experimental Study on Suitable Tool Materials.” ESAFORM 2021, 2021, doi:10.25518/esaform21.2781.","apa":"Köhler, D., Kupfer, R., Troschitz, J., & Gude, M. (2021). Clinching in In-situ CT – Experimental Study on Suitable Tool Materials. ESAFORM 2021. https://doi.org/10.25518/esaform21.2781","chicago":"Köhler, D., R. Kupfer, J. Troschitz, and M. Gude. “Clinching in In-Situ CT – Experimental Study on Suitable Tool Materials.” ESAFORM 2021, 2021. https://doi.org/10.25518/esaform21.2781.","ieee":"D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In-situ CT – Experimental Study on Suitable Tool Materials,” ESAFORM 2021, 2021, doi: 10.25518/esaform21.2781.","ama":"Köhler D, Kupfer R, Troschitz J, Gude M. Clinching in In-situ CT – Experimental Study on Suitable Tool Materials. ESAFORM 2021. Published online 2021. doi:10.25518/esaform21.2781"},"language":[{"iso":"eng"}],"project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"_id":"133","name":"TRR 285 - C: TRR 285 - Project Area C"},{"name":"TRR 285 – C04: TRR 285 - Subproject C04","_id":"148"}],"_id":"30659","user_id":"68518","abstract":[{"lang":"eng","text":"In lightweight design, clinching is a cost-efficient solution as the joint is created through localized cold-forming of the joining parts. A clinch point’s quality is usually assessed using ex-situ destructive testing methods. These, however, are unable to detect phenomena immediately during the joining process. For instance, elastic deformations reverse and cracks close after unloading. In-situ methods such as the force-displacement evaluation are used to control a clinching process, though deviations in the clinch point geometry cannot be derived with this method. To overcome these limitations, the clinching process can be investigated using in-situ computed tomography (in-situ CT). However, a clinching tool made of steel would cause strong artefacts and a high attenuation in the CT measurement, reducing the significance of this method. Additionally, when joining parts of the same material, the sheet-sheet interface is hardly detectable. This work aims at identifying, firstly, tool materials that allow artefact-reduced CT measurements during clinching, and, secondly, radiopaque materials that can be applied between the joining parts to enhance the detectability of the sheet-sheet interface. Therefore, both CT-suitable tool materials and radiopaque materials are selected and experimentally investigated. In the clinching process, two aluminium sheets with radiopaque material in between are clinched in a single-step (rotationally symmetric joint without cut section). It is shown that e.g. silicon nitride is suited as tool material and a tin layer is suitable to enhance the detectability of the sheet-sheet interface. "}],"status":"public","type":"journal_article","publication":"ESAFORM 2021"}]