[{"title":"Investigation failure behavior in the shear tensile test with variety of specimen stiffness","date_created":"2025-05-13T05:41:58Z","publisher":"EDP Sciences","year":"2025","language":[{"iso":"eng"}],"keyword":["Joining","Sheet Metal","Stiffness","Clinching"],"abstract":[{"lang":"eng","text":"This paper focuses on the failure behavior of clinched specimens with various stiffnesses under shear tensile loading. The primary objective is to assess the influence of the specimen stiffness with an arrangement of clinched joints. The specimen stiffness depends on several variables. In addition to the material selection, the specific choice of geometry and the design of the clinched joints must also be taken into account. A number of experiments was conducted to investigate the failure behavior of specimens with an arrangement of three clinched joints under shear tensile loading. These configurations were subjected to shear tensile tests, with force displacement curves recorded for each specimen to provide a detailed characterization of their structural response. The stiffness is modified by altering the specimen width, which has marginal impact on the maximum force. The experimental findings indicate that reducing the specimen stiffness results in a shift in the type of stress, with the failure behavior becoming increasingly influenced by bending stress. These results offer important insights for the design of clinched joint assemblies, indicating that it is feasible to achieve the desired properties by changing the specimen stiffness."}],"publication":"MATEC Web of Conferences","doi":"10.1051/matecconf/202540801080","conference":{"start_date":"2025-06-01","name":"44th Conference of the International Deep Drawing Research Group","location":"Lisbon","end_date":"2025-06-05"},"volume":408,"author":[{"first_name":"Eugen","full_name":"Wolf, Eugen","last_name":"Wolf"},{"first_name":"Alexander","full_name":"Brosius, Alexander","last_name":"Brosius"}],"date_updated":"2025-06-23T07:25:21Z","intvolume":"       408","citation":{"chicago":"Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the Shear Tensile Test with Variety of Specimen Stiffness.” In <i>MATEC Web of Conferences</i>, Vol. 408. EDP Sciences, 2025. <a href=\"https://doi.org/10.1051/matecconf/202540801080\">https://doi.org/10.1051/matecconf/202540801080</a>.","ieee":"E. Wolf and A. Brosius, “Investigation failure behavior in the shear tensile test with variety of specimen stiffness,” in <i>MATEC Web of Conferences</i>, Lisbon, 2025, vol. 408, doi: <a href=\"https://doi.org/10.1051/matecconf/202540801080\">10.1051/matecconf/202540801080</a>.","ama":"Wolf E, Brosius A. Investigation failure behavior in the shear tensile test with variety of specimen stiffness. In: <i>MATEC Web of Conferences</i>. Vol 408. EDP Sciences; 2025. doi:<a href=\"https://doi.org/10.1051/matecconf/202540801080\">10.1051/matecconf/202540801080</a>","bibtex":"@inproceedings{Wolf_Brosius_2025, title={Investigation failure behavior in the shear tensile test with variety of specimen stiffness}, volume={408}, DOI={<a href=\"https://doi.org/10.1051/matecconf/202540801080\">10.1051/matecconf/202540801080</a>}, number={01080}, booktitle={MATEC Web of Conferences}, publisher={EDP Sciences}, author={Wolf, Eugen and Brosius, Alexander}, year={2025} }","mla":"Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the Shear Tensile Test with Variety of Specimen Stiffness.” <i>MATEC Web of Conferences</i>, vol. 408, 01080, EDP Sciences, 2025, doi:<a href=\"https://doi.org/10.1051/matecconf/202540801080\">10.1051/matecconf/202540801080</a>.","short":"E. Wolf, A. Brosius, in: MATEC Web of Conferences, EDP Sciences, 2025.","apa":"Wolf, E., &#38; Brosius, A. (2025). Investigation failure behavior in the shear tensile test with variety of specimen stiffness. <i>MATEC Web of Conferences</i>, <i>408</i>, Article 01080. <a href=\"https://doi.org/10.1051/matecconf/202540801080\">https://doi.org/10.1051/matecconf/202540801080</a>"},"publication_identifier":{"issn":["2261-236X"]},"publication_status":"published","article_number":"01080","department":[{"_id":"630"}],"user_id":"104464","_id":"59873","project":[{"grant_number":"418701707","name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"},{"name":"TRR 285 - B: TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"}],"status":"public","type":"conference"},{"type":"conference","status":"public","_id":"59485","project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"}],"department":[{"_id":"630"}],"user_id":"104464","publication_identifier":{"issn":["2474-395X"]},"publication_status":"published","intvolume":"        52","page":" 86 - 92","citation":{"chicago":"Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the Shear Tensile Test with Respect to the Arrangements of Clinched Joints.” In <i>Materials Research Proceedings</i>, 52:86–92. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-11\">https://doi.org/10.21741/9781644903551-11</a>.","ieee":"E. Wolf and A. Brosius, “Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints,” in <i>Materials Research Proceedings</i>, Paderborn, 2025, vol. 52, pp. 86–92, doi: <a href=\"https://doi.org/10.21741/9781644903551-11\">10.21741/9781644903551-11</a>.","ama":"Wolf E, Brosius A. Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025:86-92. doi:<a href=\"https://doi.org/10.21741/9781644903551-11\">10.21741/9781644903551-11</a>","short":"E. Wolf, A. Brosius, in: Materials Research Proceedings, Materials Research Forum LLC, 2025, pp. 86–92.","mla":"Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the Shear Tensile Test with Respect to the Arrangements of Clinched Joints.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, pp. 86–92, doi:<a href=\"https://doi.org/10.21741/9781644903551-11\">10.21741/9781644903551-11</a>.","bibtex":"@inproceedings{Wolf_Brosius_2025, title={Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-11\">10.21741/9781644903551-11</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Wolf, Eugen and Brosius, Alexander}, year={2025}, pages={86–92} }","apa":"Wolf, E., &#38; Brosius, A. (2025). Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints. <i>Materials Research Proceedings</i>, <i>52</i>, 86–92. <a href=\"https://doi.org/10.21741/9781644903551-11\">https://doi.org/10.21741/9781644903551-11</a>"},"date_updated":"2025-06-23T07:26:23Z","volume":52,"author":[{"full_name":"Wolf, Eugen","last_name":"Wolf","first_name":"Eugen"},{"first_name":"Alexander","full_name":"Brosius, Alexander","last_name":"Brosius"}],"conference":{"end_date":"2025-04-03","location":"Paderborn","name":"21st International Conference on Sheet Metal","start_date":"2025-04-01"},"doi":"10.21741/9781644903551-11","publication":"Materials Research Proceedings","abstract":[{"lang":"eng","text":"This paper focuses on the failure behavior of specimens with various configurations of clinched joints under shear tensile loading. The primary objective is to assess the influence of the joining direction and the spatial arrangement of clinched joints on their mechanical performance. A number of experiments was conducted, focusing on three clinched joints arranged in different configurations, each varying in terms of joining direction and spacing. These configurations were subjected to shear tensile tests, with force-displacement curves recorded for each sample to provide a detailed characterization of their structural response. The experimental findings indicate that the specific arrangement of the clinched joints, in terms of joining direction, has a marginal impact on the overall failure behavior. This suggests that intricate modifications to the joining direction are unnecessary to achieve improved mechanical performance in such applications. These results offer valuable insights for the design of clinched joint assemblies, indicating that simplified joining strategies may suffice without compromising structural integrity under shear loading."}],"keyword":["Joining","Sheet Metal","Clinching"],"language":[{"iso":"eng"}],"year":"2025","publisher":"Materials Research Forum LLC","date_created":"2025-04-10T11:28:28Z","title":"Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints"},{"abstract":[{"lang":"eng","text":"This paper examines the impact of a rotationally superimposed punch stroke on the binding mechanisms of clinched joints of aluminum sheets. As part of the development of a method for ensuring the versatility of clinching, an additional rotational movement of the punch was introduced as a control variable to influence friction in the mechanical joining process. The effect of rotational superimposition on the force-displacement curve of the clinching processes was investigated using four test variants with different kinematics. The primary objective was to evaluate the binding mechanisms that maintain the integrity of the clinched joint. To evaluate the force closure of the resulting joint, two testing methods were employed throughout the course of the research, non-destructive resistance measurement using four-wire sensing method and destructive torsion testing. A crucial factor influencing the efficacy of the process is surface cleanliness, as contaminants between joining partners can impede the effectiveness of the clinched joint. Therefore, all specimens were meticulously cleaned prior to experimentation. This method exhibits promising potential in creating clinched joints that align with the demands of flexible manufacturing environments.</jats:p>"}],"publication":"MATEC Web of Conferences","keyword":["Joining","Sheet Metal","Tribology","Clinching"],"language":[{"iso":"eng"}],"year":"2025","quality_controlled":"1","title":"Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint","publisher":"EDP Sciences","date_created":"2025-06-20T06:57:16Z","status":"public","type":"conference","article_number":"01086","extern":"1","project":[{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A04: TRR 285 - Subproject A04","_id":"138"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"_id":"140","name":"TRR 285 – B01: TRR 285 - Subproject B01"}],"_id":"60285","user_id":"104468","department":[{"_id":"630"}],"citation":{"ama":"Lüder S, Wolf E, Schmale HC, Brosius A. Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint. In: <i>MATEC Web of Conferences</i>. Vol 408. EDP Sciences; 2025. doi:<a href=\"https://doi.org/10.1051/matecconf/202540801086\">10.1051/matecconf/202540801086</a>","ieee":"S. Lüder, E. Wolf, H. C. Schmale, and A. Brosius, “Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint,” in <i>MATEC Web of Conferences</i>, Lisbon, 2025, vol. 408, doi: <a href=\"https://doi.org/10.1051/matecconf/202540801086\">10.1051/matecconf/202540801086</a>.","chicago":"Lüder, Stephan, Eugen Wolf, Hans Christian Schmale, and Alexander Brosius. “Investigation of the Impact of a Rotationally Superimposed Punch Stroke on the Binding Mechanisms of a Clinched Joint.” In <i>MATEC Web of Conferences</i>, Vol. 408. EDP Sciences, 2025. <a href=\"https://doi.org/10.1051/matecconf/202540801086\">https://doi.org/10.1051/matecconf/202540801086</a>.","short":"S. Lüder, E. Wolf, H.C. Schmale, A. Brosius, in: MATEC Web of Conferences, EDP Sciences, 2025.","bibtex":"@inproceedings{Lüder_Wolf_Schmale_Brosius_2025, title={Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint}, volume={408}, DOI={<a href=\"https://doi.org/10.1051/matecconf/202540801086\">10.1051/matecconf/202540801086</a>}, number={01086}, booktitle={MATEC Web of Conferences}, publisher={EDP Sciences}, author={Lüder, Stephan and Wolf, Eugen and Schmale, Hans Christian and Brosius, Alexander}, year={2025} }","mla":"Lüder, Stephan, et al. “Investigation of the Impact of a Rotationally Superimposed Punch Stroke on the Binding Mechanisms of a Clinched Joint.” <i>MATEC Web of Conferences</i>, vol. 408, 01086, EDP Sciences, 2025, doi:<a href=\"https://doi.org/10.1051/matecconf/202540801086\">10.1051/matecconf/202540801086</a>.","apa":"Lüder, S., Wolf, E., Schmale, H. C., &#38; Brosius, A. (2025). Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint. <i>MATEC Web of Conferences</i>, <i>408</i>, Article 01086. <a href=\"https://doi.org/10.1051/matecconf/202540801086\">https://doi.org/10.1051/matecconf/202540801086</a>"},"intvolume":"       408","publication_status":"published","publication_identifier":{"issn":["2261-236X"]},"conference":{"name":"44th Conference of the International Deep Drawing Research Group (IDDRG 2025) ","start_date":"2025-06-01","end_date":"2025-06-05","location":"Lisbon"},"doi":"10.1051/matecconf/202540801086","date_updated":"2025-07-18T09:01:46Z","author":[{"full_name":"Lüder, Stephan","last_name":"Lüder","first_name":"Stephan"},{"full_name":"Wolf, Eugen","last_name":"Wolf","first_name":"Eugen"},{"first_name":"Hans Christian","full_name":"Schmale, Hans Christian","last_name":"Schmale"},{"first_name":"Alexander","last_name":"Brosius","full_name":"Brosius, Alexander"}],"volume":408},{"language":[{"iso":"eng"}],"keyword":["Clinching","Non-destructive testing","Transient Dynamic Analysis"],"publication":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","abstract":[{"lang":"eng","text":"<jats:p> Clinching is a mechanical joining technology, in which a mainly form-fit joint is created by means of local cold forming. To characterize the load-bearing behavior of such joints, they are typically analyzed destructively, for example by tensile-shear tests in combination with metallographic sections. However, both the initiation and progress of failure can only be described to a limited extent by this method. Furthermore, these tests allow only limited conclusions about clinch points under in-service loading. More purposefully, clinch points can be analyzed nondestructively by combining in-situ computed tomography (CT) and transient dynamic analysis (TDA). The TDA continuously measures the dynamic behavior of the specimen and indicates failure events like crack initiation, which then can be evaluated thoroughly by stopping the test and performing a CT scan. To qualify the TDA for this task, it is necessary to link the observed damage behavior with specific dynamic characteristics. In this work, the complementation of in-situ CT and TDA is investigated by testing a clinched single-lap tensile-shear specimen made of aluminum. The testing procedure is stepwise: at certain displacement levels, the specimen is investigated by in-situ CT and TDA. While the in-situ CT provides the location, extent, and development of the failure phenomena, the TDA uses this information to evaluate the dynamic signal and detect relevant frequency ranges, which indicate damage events. The results demonstrate, that failure initiation and progression can be analyzed efficiently by combining both measuring systems. The TDA reliably detects relevant signal changes in the monitored frequency band. By means of in-situ computed tomography, the corresponding failure phenomena can be described in detail, enhancing the understanding of the load-bearing and deformation behavior of clinch points. The concatenation of characteristic signal changes and observed failure phenomena can henceforth be transferred to analyze complex structures during operation nondestructively by TDA. </jats:p>"}],"date_created":"2025-01-23T19:21:45Z","publisher":"SAGE Publications","title":"In-situ computed tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear test with clinch points","quality_controlled":"1","year":"2024","user_id":"98812","department":[{"_id":"43"},{"_id":"157"}],"project":[{"_id":"133","name":"TRR 285 - C: TRR 285 - Project Area C"},{"name":"TRR 285 – C04: TRR 285 - Subproject C04","_id":"148"}],"_id":"58348","article_type":"original","type":"journal_article","status":"public","author":[{"first_name":"Gregor","last_name":"Reschke","full_name":"Reschke, Gregor"},{"last_name":"Köhler","full_name":"Köhler, Daniel","first_name":"Daniel"},{"full_name":"Kupfer, Robert","last_name":"Kupfer","first_name":"Robert"},{"full_name":"Troschitz, Juliane","last_name":"Troschitz","first_name":"Juliane"},{"full_name":"Gude, Maik","last_name":"Gude","first_name":"Maik"},{"first_name":"Alexander","full_name":"Brosius, Alexander","last_name":"Brosius"}],"oa":"1","date_updated":"2025-01-23T19:32:03Z","main_file_link":[{"open_access":"1"}],"doi":"10.1177/09544089241251646","publication_status":"published","publication_identifier":{"issn":["0954-4089","2041-3009"]},"citation":{"mla":"Reschke, Gregor, et al. “In-Situ Computed Tomography and Transient Dynamic Analysis – Failure Analysis of a Single-Lap Tensile-Shear Test with Clinch Points.” <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</i>, SAGE Publications, 2024, doi:<a href=\"https://doi.org/10.1177/09544089241251646\">10.1177/09544089241251646</a>.","short":"G. Reschke, D. Köhler, R. Kupfer, J. Troschitz, M. Gude, A. Brosius, Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering (2024).","bibtex":"@article{Reschke_Köhler_Kupfer_Troschitz_Gude_Brosius_2024, title={In-situ computed tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear test with clinch points}, DOI={<a href=\"https://doi.org/10.1177/09544089241251646\">10.1177/09544089241251646</a>}, journal={Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering}, publisher={SAGE Publications}, author={Reschke, Gregor and Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude, Maik and Brosius, Alexander}, year={2024} }","apa":"Reschke, G., Köhler, D., Kupfer, R., Troschitz, J., Gude, M., &#38; Brosius, A. (2024). In-situ computed tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear test with clinch points. <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</i>. <a href=\"https://doi.org/10.1177/09544089241251646\">https://doi.org/10.1177/09544089241251646</a>","ama":"Reschke G, Köhler D, Kupfer R, Troschitz J, Gude M, Brosius A. In-situ computed tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear test with clinch points. <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1177/09544089241251646\">10.1177/09544089241251646</a>","ieee":"G. Reschke, D. Köhler, R. Kupfer, J. Troschitz, M. Gude, and A. Brosius, “In-situ computed tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear test with clinch points,” <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</i>, 2024, doi: <a href=\"https://doi.org/10.1177/09544089241251646\">10.1177/09544089241251646</a>.","chicago":"Reschke, Gregor, Daniel Köhler, Robert Kupfer, Juliane Troschitz, Maik Gude, and Alexander Brosius. “In-Situ Computed Tomography and Transient Dynamic Analysis – Failure Analysis of a Single-Lap Tensile-Shear Test with Clinch Points.” <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</i>, 2024. <a href=\"https://doi.org/10.1177/09544089241251646\">https://doi.org/10.1177/09544089241251646</a>."}},{"type":"journal_article","status":"public","user_id":"84990","project":[{"name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 – A05: TRR 285 - Subproject A05","_id":"139"}],"_id":"58491","article_number":"157","publication_status":"published","publication_identifier":{"issn":["2504-4494"]},"citation":{"chicago":"Friedlein, Johannes, Max Böhnke, Malte Schlichter, Mathias Bobbert, Gerson Meschut, Julia Mergheim, and Paul Steinmann. “Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining.” <i>Journal of Manufacturing and Materials Processing</i> 8, no. 4 (2024). <a href=\"https://doi.org/10.3390/jmmp8040157\">https://doi.org/10.3390/jmmp8040157</a>.","ieee":"J. Friedlein <i>et al.</i>, “Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining,” <i>Journal of Manufacturing and Materials Processing</i>, vol. 8, no. 4, Art. no. 157, 2024, doi: <a href=\"https://doi.org/10.3390/jmmp8040157\">10.3390/jmmp8040157</a>.","ama":"Friedlein J, Böhnke M, Schlichter M, et al. Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining. <i>Journal of Manufacturing and Materials Processing</i>. 2024;8(4). doi:<a href=\"https://doi.org/10.3390/jmmp8040157\">10.3390/jmmp8040157</a>","apa":"Friedlein, J., Böhnke, M., Schlichter, M., Bobbert, M., Meschut, G., Mergheim, J., &#38; Steinmann, P. (2024). Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining. <i>Journal of Manufacturing and Materials Processing</i>, <i>8</i>(4), Article 157. <a href=\"https://doi.org/10.3390/jmmp8040157\">https://doi.org/10.3390/jmmp8040157</a>","mla":"Friedlein, Johannes, et al. “Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining.” <i>Journal of Manufacturing and Materials Processing</i>, vol. 8, no. 4, 157, MDPI AG, 2024, doi:<a href=\"https://doi.org/10.3390/jmmp8040157\">10.3390/jmmp8040157</a>.","bibtex":"@article{Friedlein_Böhnke_Schlichter_Bobbert_Meschut_Mergheim_Steinmann_2024, title={Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining}, volume={8}, DOI={<a href=\"https://doi.org/10.3390/jmmp8040157\">10.3390/jmmp8040157</a>}, number={4157}, journal={Journal of Manufacturing and Materials Processing}, publisher={MDPI AG}, author={Friedlein, Johannes and Böhnke, Max and Schlichter, Malte and Bobbert, Mathias and Meschut, Gerson and Mergheim, Julia and Steinmann, Paul}, year={2024} }","short":"J. Friedlein, M. Böhnke, M. Schlichter, M. Bobbert, G. Meschut, J. Mergheim, P. Steinmann, Journal of Manufacturing and Materials Processing 8 (2024)."},"intvolume":"         8","author":[{"last_name":"Friedlein","full_name":"Friedlein, Johannes","first_name":"Johannes"},{"full_name":"Böhnke, Max","last_name":"Böhnke","first_name":"Max"},{"full_name":"Schlichter, Malte","last_name":"Schlichter","first_name":"Malte"},{"first_name":"Mathias","last_name":"Bobbert","full_name":"Bobbert, Mathias"},{"full_name":"Meschut, Gerson","last_name":"Meschut","first_name":"Gerson"},{"last_name":"Mergheim","full_name":"Mergheim, Julia","first_name":"Julia"},{"first_name":"Paul","last_name":"Steinmann","full_name":"Steinmann, Paul"}],"volume":8,"date_updated":"2025-01-31T17:03:34Z","doi":"10.3390/jmmp8040157","publication":"Journal of Manufacturing and Materials Processing","abstract":[{"lang":"eng","text":"<jats:p>Similar to bulk metal forming, clinch joining is characterised by large plastic deformations and a variety of different 3D stress states, including severe compression. However, inherent to plastic forming is the nucleation and growth of defects, whose detrimental effects on the material behaviour can be described by continuum damage models and eventually lead to material failure. As the damage evolution strongly depends on the stress state, a stress-state-dependent model is utilised to correctly track the accumulation. To formulate and parameterise this model, besides classical experiments, so-called modified punch tests are also integrated herein to enhance the calibration of the failure model by capturing a larger range of stress states and metal-forming-specific loading conditions. Moreover, when highly ductile materials are considered, such as the dual-phase steel HCT590X and the aluminium alloy EN AW-6014 T4 investigated here, strong necking and localisation might occur prior to fracture. This can alter the stress state and affect the actual strain at failure. This influence is captured by coupling plasticity and damage to incorporate the damage-induced softening effect. Its relative importance is shown by conducting inverse parameter identifications to determine damage and failure parameters for both mentioned ductile metals based on up to 12 different experiments.</jats:p>"}],"language":[{"iso":"eng"}],"keyword":["ductile damage","stress-state dependency","failure","parameter identification","punch test","clinching"],"issue":"4","year":"2024","date_created":"2025-01-31T16:59:13Z","publisher":"MDPI AG","title":"Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining"},{"year":"2024","intvolume":"        10","citation":{"mla":"Steinfelder, Christian, et al. “Influence of the Material Properties on the Clinching Process and the Resulting Load-Bearing Capacity of the Joint.” <i>Journal of Advanced Joining Processes</i>, vol. 10, 100263, Elsevier BV, 2024, doi:<a href=\"https://doi.org/10.1016/j.jajp.2024.100263\">10.1016/j.jajp.2024.100263</a>.","short":"C. Steinfelder, D. Rempel, A. Brosius, Journal of Advanced Joining Processes 10 (2024).","bibtex":"@article{Steinfelder_Rempel_Brosius_2024, title={Influence of the material properties on the clinching process and the resulting load-bearing capacity of the joint}, volume={10}, DOI={<a href=\"https://doi.org/10.1016/j.jajp.2024.100263\">10.1016/j.jajp.2024.100263</a>}, number={100263}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Steinfelder, Christian and Rempel, Dennis and Brosius, Alexander}, year={2024} }","apa":"Steinfelder, C., Rempel, D., &#38; Brosius, A. (2024). Influence of the material properties on the clinching process and the resulting load-bearing capacity of the joint. <i>Journal of Advanced Joining Processes</i>, <i>10</i>, Article 100263. <a href=\"https://doi.org/10.1016/j.jajp.2024.100263\">https://doi.org/10.1016/j.jajp.2024.100263</a>","ama":"Steinfelder C, Rempel D, Brosius A. Influence of the material properties on the clinching process and the resulting load-bearing capacity of the joint. <i>Journal of Advanced Joining Processes</i>. 2024;10. doi:<a href=\"https://doi.org/10.1016/j.jajp.2024.100263\">10.1016/j.jajp.2024.100263</a>","chicago":"Steinfelder, Christian, Dennis Rempel, and Alexander Brosius. “Influence of the Material Properties on the Clinching Process and the Resulting Load-Bearing Capacity of the Joint.” <i>Journal of Advanced Joining Processes</i> 10 (2024). <a href=\"https://doi.org/10.1016/j.jajp.2024.100263\">https://doi.org/10.1016/j.jajp.2024.100263</a>.","ieee":"C. Steinfelder, D. Rempel, and A. Brosius, “Influence of the material properties on the clinching process and the resulting load-bearing capacity of the joint,” <i>Journal of Advanced Joining Processes</i>, vol. 10, Art. no. 100263, 2024, doi: <a href=\"https://doi.org/10.1016/j.jajp.2024.100263\">10.1016/j.jajp.2024.100263</a>."},"publication_identifier":{"issn":["2666-3309"]},"publication_status":"published","title":"Influence of the material properties on the clinching process and the resulting load-bearing capacity of the joint","doi":"10.1016/j.jajp.2024.100263","date_updated":"2025-06-23T07:57:53Z","publisher":"Elsevier BV","volume":10,"date_created":"2025-06-23T07:54:23Z","author":[{"first_name":"Christian","last_name":"Steinfelder","full_name":"Steinfelder, Christian"},{"first_name":"Dennis","last_name":"Rempel","full_name":"Rempel, Dennis"},{"first_name":"Alexander","last_name":"Brosius","full_name":"Brosius, Alexander"}],"abstract":[{"text":"This study focuses on the phenomenological change in material strength caused by a specific heat treatment and the subsequent analysis of the influence on the clinching process and the resulting joint properties. For this purpose, three series of tests were performed. In the first series of tests, the influence of heat treatment up to 340 °C on the mechanical properties of an age-hardenable AlMgSi alloy was investigated. Holding time and temperature were varied and the material strength was evaluated by tensile and hardness tests. Two strength-increasing and two strength-reducing heat treatment parameters were identified. In the second series of tests, selected heat treatment parameters were applied to a larger number of specimens and the joint strength was investigated by shear and head tensile tests. In the shear tensile test, mainly the properties of the punch-side material have an influence on the resulting joint strength. A change in strength of the die-side material can be neglected. In contrast, the properties of both sheets are important in the head tensile test. The strength of the joint will only increase if the strength of both sheets is increased. In general, a strength increasing heat treatment resulted in higher joint strength. In the third series of tests, the factor of punch displacement was considered, which was demonstrated to directly influence the formation of the clinched joint geometry.","lang":"eng"}],"status":"public","publication":"Journal of Advanced Joining Processes","type":"journal_article","keyword":["Joining by forming","Clinching","EN AW-6014","Heat treatment","Load-bearing capacity"],"article_number":"100263","language":[{"iso":"eng"}],"_id":"60300","project":[{"name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - B: TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"}],"department":[{"_id":"630"}],"user_id":"104464"},{"date_created":"2022-12-05T21:01:29Z","author":[{"full_name":"Friedlein, Johannes","last_name":"Friedlein","first_name":"Johannes"},{"full_name":"Mergheim, Julia","last_name":"Mergheim","first_name":"Julia"},{"first_name":"Paul","last_name":"Steinmann","full_name":"Steinmann, Paul"}],"date_updated":"2022-12-05T21:05:52Z","publisher":"Springer International Publishing","doi":"10.1007/978-3-031-06212-4_31","title":"Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal","publication_status":"published","publication_identifier":{"issn":["2367-1181","2367-1696"],"isbn":["9783031062117","9783031062124"]},"citation":{"bibtex":"@inbook{Friedlein_Mergheim_Steinmann_2022, place={Cham}, title={Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal}, DOI={<a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">10.1007/978-3-031-06212-4_31</a>}, booktitle={The Minerals, Metals &#38;amp; Materials Series}, publisher={Springer International Publishing}, author={Friedlein, Johannes and Mergheim, Julia and Steinmann, Paul}, year={2022} }","short":"J. Friedlein, J. Mergheim, P. Steinmann, in: The Minerals, Metals &#38;amp; Materials Series, Springer International Publishing, Cham, 2022.","mla":"Friedlein, Johannes, et al. “Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal.” <i>The Minerals, Metals &#38;amp; Materials Series</i>, Springer International Publishing, 2022, doi:<a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">10.1007/978-3-031-06212-4_31</a>.","apa":"Friedlein, J., Mergheim, J., &#38; Steinmann, P. (2022). Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal. In <i>The Minerals, Metals &#38;amp; Materials Series</i>. Springer International Publishing. <a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">https://doi.org/10.1007/978-3-031-06212-4_31</a>","chicago":"Friedlein, Johannes, Julia Mergheim, and Paul Steinmann. “Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal.” In <i>The Minerals, Metals &#38;amp; Materials Series</i>. Cham: Springer International Publishing, 2022. <a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">https://doi.org/10.1007/978-3-031-06212-4_31</a>.","ieee":"J. Friedlein, J. Mergheim, and P. Steinmann, “Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal,” in <i>The Minerals, Metals &#38;amp; Materials Series</i>, Cham: Springer International Publishing, 2022.","ama":"Friedlein J, Mergheim J, Steinmann P. Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal. In: <i>The Minerals, Metals &#38;amp; Materials Series</i>. Springer International Publishing; 2022. doi:<a href=\"https://doi.org/10.1007/978-3-031-06212-4_31\">10.1007/978-3-031-06212-4_31</a>"},"place":"Cham","year":"2022","user_id":"7850","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A05: TRR 285 - Subproject A05","_id":"139"}],"_id":"34211","language":[{"iso":"eng"}],"keyword":["Clinching","Material modelling","Kinematic hardening","Parameter identification","Bauschinger effect"],"type":"book_chapter","publication":"The Minerals, Metals &amp; Materials Series","status":"public","abstract":[{"text":"Nowadays, clinching is a widely used joining technique, where sheets are joined by pure deformation to create an interlock without the need for auxiliary parts. This leads to advantages such as reduced joining time and manufacturing\r\ncosts. On the other hand, the joint strength solely relies on directed material deformation, which renders an accurate material modelling essential to reliably predict the joint forming. The formation of the joint locally involves large plastic strains and possibly complex non-proportional loading paths, as typical of many metal forming applications. Consequently, a finite plasticity formulation is utilised incorporating a Chaboche–Rousselier kinematic hardening law to capture the Bauschinger effect. Material parameters are identified from tension–compression tests on miniature spec-\r\nimens for the dual-phase steel HCT590X. The resulting material model is implemented in LS-Dyna to study the locally diverse loading paths and give a quantitative statement on the importance of kinematic hardening for clinching. It turns out that the Bauschinger effect mainly affects the springback of the sheets and has a smaller effect on the joint forming itself.","lang":"eng"}]},{"language":[{"iso":"eng"}],"keyword":["Clinching","Non-destructive testing","Computed tomography","In situ CT"],"user_id":"7850","project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"_id":"133","name":"TRR 285 - C: TRR 285 - Project Area C"},{"name":"TRR 285 – C04: TRR 285 - Subproject C04","_id":"148"}],"_id":"34212","status":"public","abstract":[{"text":"Force–displacement measurements and micrograph analyses are commonly used methods to validate numerical models of clinching processes. However, these methods often lead to resetting of elastic deformations and crack-\r\nclosing after unloading. In contrast, the in situ computed tomography (CT) can provide three-dimensional images of the clinch point under loading conditions. In this paper, the potential of the in situ investigation of a clinching process as validation method is analyzed. For the in situ testing, a tailored test set-up featuring a beryllium cylinder for load-bearing and clinching tools made from ultra-high-strength titanium and Si3N4 are used. In the experiments, the clinching of two aluminum sheets is interrupted at specific process steps in order to perform the CT scans. It is shown that in situ CT visualizes the inner geometry of the joint at high precision and that this method is suitable to validate numerical models.","lang":"eng"}],"type":"book_chapter","publication":"The Minerals, Metals & Materials Series","doi":"10.1007/978-3-031-06212-4_75","title":"Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes","author":[{"first_name":"Daniel","full_name":"Köhler, Daniel","last_name":"Köhler"},{"last_name":"Kupfer","full_name":"Kupfer, Robert","first_name":"Robert"},{"last_name":"Troschitz","full_name":"Troschitz, Juliane","first_name":"Juliane"},{"first_name":"Maik","last_name":"Gude","full_name":"Gude, Maik"}],"date_created":"2022-12-05T21:06:21Z","publisher":"Springer International Publishing","date_updated":"2022-12-05T21:11:47Z","citation":{"short":"D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: The Minerals, Metals &#38; Materials Series, Springer International Publishing, Cham, 2022.","bibtex":"@inbook{Köhler_Kupfer_Troschitz_Gude_2022, place={Cham}, title={Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes}, DOI={<a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">10.1007/978-3-031-06212-4_75</a>}, booktitle={The Minerals, Metals &#38; Materials Series}, publisher={Springer International Publishing}, author={Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}, year={2022} }","mla":"Köhler, Daniel, et al. “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes.” <i>The Minerals, Metals &#38; Materials Series</i>, Springer International Publishing, 2022, doi:<a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">10.1007/978-3-031-06212-4_75</a>.","apa":"Köhler, D., Kupfer, R., Troschitz, J., &#38; Gude, M. (2022). Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes. In <i>The Minerals, Metals &#38; Materials Series</i>. Springer International Publishing. <a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">https://doi.org/10.1007/978-3-031-06212-4_75</a>","ieee":"D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes,” in <i>The Minerals, Metals &#38; Materials Series</i>, Cham: Springer International Publishing, 2022.","chicago":"Köhler, Daniel, Robert Kupfer, Juliane Troschitz, and Maik Gude. “Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes.” In <i>The Minerals, Metals &#38; Materials Series</i>. Cham: Springer International Publishing, 2022. <a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">https://doi.org/10.1007/978-3-031-06212-4_75</a>.","ama":"Köhler D, Kupfer R, Troschitz J, Gude M. Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes. In: <i>The Minerals, Metals &#38; Materials Series</i>. Springer International Publishing; 2022. doi:<a href=\"https://doi.org/10.1007/978-3-031-06212-4_75\">10.1007/978-3-031-06212-4_75</a>"},"year":"2022","place":"Cham","publication_status":"published","publication_identifier":{"issn":["2367-1181","2367-1696"],"isbn":["9783031062117","9783031062124"]}},{"publication_status":"published","year":"2022","citation":{"apa":"Stephan, R., &#38; Brosius, A. (2022). Experimental Measurement Method and Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets. <i>The 28th Saxon Conference on Forming Technology SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT</i>. <a href=\"https://doi.org/10.3390/engproc2022026025\">https://doi.org/10.3390/engproc2022026025</a>","bibtex":"@inproceedings{Stephan_Brosius_2022, title={Experimental Measurement Method and Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets}, DOI={<a href=\"https://doi.org/10.3390/engproc2022026025\">10.3390/engproc2022026025</a>}, booktitle={The 28th Saxon Conference on Forming Technology SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT}, publisher={MDPI}, author={Stephan, Richard and Brosius, Alexander}, year={2022} }","mla":"Stephan, Richard, and Alexander Brosius. “Experimental Measurement Method and Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets.” <i>The 28th Saxon Conference on Forming Technology SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT</i>, MDPI, 2022, doi:<a href=\"https://doi.org/10.3390/engproc2022026025\">10.3390/engproc2022026025</a>.","short":"R. Stephan, A. Brosius, in: The 28th Saxon Conference on Forming Technology SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT, MDPI, 2022.","ama":"Stephan R, Brosius A. Experimental Measurement Method and Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets. In: <i>The 28th Saxon Conference on Forming Technology SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT</i>. MDPI; 2022. doi:<a href=\"https://doi.org/10.3390/engproc2022026025\">10.3390/engproc2022026025</a>","ieee":"R. Stephan and A. Brosius, “Experimental Measurement Method and Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets,” 2022, doi: <a href=\"https://doi.org/10.3390/engproc2022026025\">10.3390/engproc2022026025</a>.","chicago":"Stephan, Richard, and Alexander Brosius. “Experimental Measurement Method and Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets.” In <i>The 28th Saxon Conference on Forming Technology SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT</i>. MDPI, 2022. <a href=\"https://doi.org/10.3390/engproc2022026025\">https://doi.org/10.3390/engproc2022026025</a>."},"oa":"1","publisher":"MDPI","date_updated":"2023-01-12T13:58:49Z","date_created":"2023-01-12T13:55:07Z","author":[{"first_name":"Richard","last_name":"Stephan","full_name":"Stephan, Richard"},{"full_name":"Brosius, Alexander","last_name":"Brosius","first_name":"Alexander"}],"title":"Experimental Measurement Method and Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets","main_file_link":[{"open_access":"1","url":"https://www.mdpi.com/2673-4591/26/1/25"}],"doi":"10.3390/engproc2022026025","type":"conference","publication":"The 28th Saxon Conference on Forming Technology SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT","abstract":[{"lang":"eng","text":"The conduction of structure-borne sound through joints causes energy dissipation. The sound reduction index describes this energy loss as a level decrease in the particle velocity across series-connected damping elements for which the superposition principle applies. This simple model can help to develop a testing method for joints based on this characteristic energy loss. In this paper, this model is experimentally evaluated for multiple in-series clinched aluminium sheets. Samples connected by several clinch points arranged in parallel are investigated experimentally, and the results are discussed."}],"status":"public","project":[{"grant_number":"418701707","name":"TRR 285: TRR 285","_id":"130"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285 – C04: TRR 285 - Subproject C04","_id":"148"}],"_id":"36462","user_id":"7850","department":[{"_id":"630"}],"keyword":["clinching","mechanical joining","damping","model","evaluation","dynamics"],"language":[{"iso":"eng"}]},{"publication_identifier":{"unknown":["https://doi.org/10.1016/j.jajp.2020.100038"]},"publication_status":"published","citation":{"mla":"Bielak, Christian Roman, et al. “Numerical Analysis of the Robustness of Clinching Process Considering the Pre-Forming of the Parts .” <i>Journal of Advanced Joining Processes. </i>, Elsevier, 2020, doi:<a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>.","bibtex":"@article{Bielak_Böhnke_Beck_Bobbert_Meschut_2020, title={Numerical analysis of the robustness of clinching process considering the pre-forming of the parts }, DOI={<a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>}, journal={Journal of Advanced Joining Processes. }, publisher={Elsevier}, author={Bielak, Christian Roman and Böhnke, Max and Beck, Robert and Bobbert, Mathias and Meschut, Gerson}, year={2020} }","short":"C.R. Bielak, M. Böhnke, R. Beck, M. Bobbert, G. Meschut, Journal of Advanced Joining Processes.  (2020).","apa":"Bielak, C. R., Böhnke, M., Beck, R., Bobbert, M., &#38; Meschut, G. (2020). Numerical analysis of the robustness of clinching process considering the pre-forming of the parts . <i>Journal of Advanced Joining Processes. </i>. <a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>","ama":"Bielak CR, Böhnke M, Beck R, Bobbert M, Meschut G. Numerical analysis of the robustness of clinching process considering the pre-forming of the parts . <i>Journal of Advanced Joining Processes </i>. Published online 2020. doi:<a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>","ieee":"C. R. Bielak, M. Böhnke, R. Beck, M. Bobbert, and G. Meschut, “Numerical analysis of the robustness of clinching process considering the pre-forming of the parts ,” <i>Journal of Advanced Joining Processes. </i>, 2020, doi: <a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>.","chicago":"Bielak, Christian Roman, Max Böhnke, Robert Beck, Mathias Bobbert, and Gerson Meschut. “Numerical Analysis of the Robustness of Clinching Process Considering the Pre-Forming of the Parts .” <i>Journal of Advanced Joining Processes. </i>, 2020. <a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>."},"year":"2020","author":[{"last_name":"Bielak","full_name":"Bielak, Christian Roman","id":"34782","first_name":"Christian Roman"},{"first_name":"Max","id":"45779","full_name":"Böhnke, Max","last_name":"Böhnke"},{"full_name":"Beck, Robert","id":"38279","last_name":"Beck","first_name":"Robert"},{"id":"7850","full_name":"Bobbert, Mathias","last_name":"Bobbert","first_name":"Mathias"},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"date_created":"2020-12-02T16:21:34Z","date_updated":"2022-03-24T09:39:11Z","publisher":"Elsevier","doi":"https://doi.org/10.1016/j.jajp.2020.100038","title":"Numerical analysis of the robustness of clinching process considering the pre-forming of the parts ","publication":"Journal of Advanced Joining Processes. ","type":"journal_article","status":"public","department":[{"_id":"157"}],"user_id":"34782","_id":"20678","project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"}],"language":[{"iso":"eng"}],"keyword":["Clinching","process simulation","FEM","pre-straining","sensitivity analysis"]}]