--- _id: '65582' abstract: - lang: eng text: The mechanical joining of continuous fiber-reinforced thermoplastics (cFRTP) and metal sheets represents a promising approach for manufacturing hybrid lightweight structures. To reduce the time and cost associated with extensive experimental investigations, numerical modeling strategies are increasingly applied. In this numerical study, a further step in the modelling strategy for the direct pin-pressing (DPP) process of cFRTP and metal sheets is presented. The study focuses on modeling and simulating the occurring deformation mechanisms of decomposition, compaction, and separation of individual rovings on the mesoscale to analyze the resulting material structure. For this purpose, two simplified models were derived. The textile architecture is represented based on micrographs of cross-sections and discretized using the finite element method. The deformation of individual rovings during joining leads to a deformation of their initial elliptical cross section. To capture this level of resolution, both a cohesive zone and a pure contact approach are applied within the rovings. The highly viscous thermoplastic melt is modeled as a fluid employing the Arbitrary Lagrange–Eulerian (ALE) method. Matrix and roving meshes are coupled to account for fluid–structure interaction (FSI) during process. The study shows that coupling of matrix and rovings is necessary to obtain more accurate predictions of the deformation behaviour. Furthermore, the cohesive zone approach is better suited to simulate the emerging deformation mechanisms. author: - first_name: Benjamin full_name: Gröger, Benjamin last_name: Gröger - first_name: Johannes full_name: Gerritzen, Johannes id: '105344' last_name: Gerritzen orcid: 0000-0002-0169-8602 - first_name: Andreas full_name: Hornig, Andreas last_name: Hornig - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: Gröger B, Gerritzen J, Hornig A, Gude M. Modelling Deformation Mechanisms Decomposition, Separation and Compaction in Mechanical Joining Processes of Fiber Reinforced Thermoplastics on Meso Scale. Key Engineering Materials. 2026;1050:227-234. doi:10.4028/p-e8wywr apa: Gröger, B., Gerritzen, J., Hornig, A., & Gude, M. (2026). Modelling Deformation Mechanisms Decomposition, Separation and Compaction in Mechanical Joining Processes of Fiber Reinforced Thermoplastics on Meso Scale. Key Engineering Materials, 1050, 227–234. https://doi.org/10.4028/p-e8wywr bibtex: '@article{Gröger_Gerritzen_Hornig_Gude_2026, title={Modelling Deformation Mechanisms Decomposition, Separation and Compaction in Mechanical Joining Processes of Fiber Reinforced Thermoplastics on Meso Scale}, volume={1050}, DOI={10.4028/p-e8wywr}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Gröger, Benjamin and Gerritzen, Johannes and Hornig, Andreas and Gude, Maik}, year={2026}, pages={227–234} }' chicago: 'Gröger, Benjamin, Johannes Gerritzen, Andreas Hornig, and Maik Gude. “Modelling Deformation Mechanisms Decomposition, Separation and Compaction in Mechanical Joining Processes of Fiber Reinforced Thermoplastics on Meso Scale.” Key Engineering Materials 1050 (2026): 227–34. https://doi.org/10.4028/p-e8wywr.' ieee: 'B. Gröger, J. Gerritzen, A. Hornig, and M. Gude, “Modelling Deformation Mechanisms Decomposition, Separation and Compaction in Mechanical Joining Processes of Fiber Reinforced Thermoplastics on Meso Scale,” Key Engineering Materials, vol. 1050, pp. 227–234, 2026, doi: 10.4028/p-e8wywr.' mla: Gröger, Benjamin, et al. “Modelling Deformation Mechanisms Decomposition, Separation and Compaction in Mechanical Joining Processes of Fiber Reinforced Thermoplastics on Meso Scale.” Key Engineering Materials, vol. 1050, Trans Tech Publications, Ltd., 2026, pp. 227–34, doi:10.4028/p-e8wywr. short: B. Gröger, J. Gerritzen, A. Hornig, M. Gude, Key Engineering Materials 1050 (2026) 227–234. date_created: 2026-05-07T15:07:34Z date_updated: 2026-05-07T15:10:16Z doi: 10.4028/p-e8wywr intvolume: ' 1050' language: - iso: eng page: 227-234 project: - _id: '137' name: TRR 285 - Subproject A03 - _id: '131' name: TRR 285 - Project Area A - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. status: public title: Modelling Deformation Mechanisms Decomposition, Separation and Compaction in Mechanical Joining Processes of Fiber Reinforced Thermoplastics on Meso Scale type: journal_article user_id: '105344' volume: 1050 year: '2026' ... --- _id: '65704' abstract: - lang: eng text: The utilisation of friction-induced solid-state recycling, methodically adapted to the CoNform process, facilitates the continuous production of semi-finished products. The material intended for recycling is conveyed continuously via a rotating wheel. The volume flow is influenced by fixed surfaces, deflections, and constrictions, thereby creating an asymmetrical flow profile. In order to effect a change in the mechanical properties of the semi-finished product, the material fed into the process can be modified. This enables the amalgamation of two alloys or the direct transition between them. The inhomogeneous flow conditions present within the tool give rise to the mixing of materials, thereby creating a graded multi-material zone. The multi-material zone was divided into different areas and traced back to the process conditions. Within the transitions, the connections between the alloys were examined, as well as the influence on the boundary layer. Material properties were determined for the individual areas and located along the length of the profile. author: - first_name: Steffen full_name: Gabsa, Steffen last_name: Gabsa - first_name: Werner full_name: Homberg, Werner last_name: Homberg citation: ama: Gabsa S, Homberg W. Material Transition by Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap. Key Engineering Materials. 2026;1051:147-154. doi:10.4028/p-nn14jh apa: Gabsa, S., & Homberg, W. (2026). Material Transition by Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap. Key Engineering Materials, 1051, 147–154. https://doi.org/10.4028/p-nn14jh bibtex: '@article{Gabsa_Homberg_2026, title={Material Transition by Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap}, volume={1051}, DOI={10.4028/p-nn14jh}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Gabsa, Steffen and Homberg, Werner}, year={2026}, pages={147–154} }' chicago: 'Gabsa, Steffen, and Werner Homberg. “Material Transition by Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap.” Key Engineering Materials 1051 (2026): 147–54. https://doi.org/10.4028/p-nn14jh.' ieee: 'S. Gabsa and W. Homberg, “Material Transition by Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap,” Key Engineering Materials, vol. 1051, pp. 147–154, 2026, doi: 10.4028/p-nn14jh.' mla: Gabsa, Steffen, and Werner Homberg. “Material Transition by Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap.” Key Engineering Materials, vol. 1051, Trans Tech Publications, Ltd., 2026, pp. 147–54, doi:10.4028/p-nn14jh. short: S. Gabsa, W. Homberg, Key Engineering Materials 1051 (2026) 147–154. date_created: 2026-05-27T17:43:59Z date_updated: 2026-06-04T12:32:31Z doi: 10.4028/p-nn14jh intvolume: ' 1051' page: 147-154 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. status: public title: Material Transition by Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap type: journal_article user_id: '106786' volume: 1051 year: '2026' ... --- _id: '32864' abstract: - lang: eng text: The further development of in-mold-assembly (IMA) technologies for structural hybrid components is of great importance for increasing the economic efficiency and thus the application potential. This paper presents an innovative IMA process concept for the manufacturing of bending loaded hybrid components consisting of two outer metal belts and an inner core structure made of glass mat reinforced thermoplastic (GMT). In this process, the core structure, which is provided with stiffening ribs and functional elements, is formed and joined to two metal belts in one single step. For experimental validation of the concept, the development of a prototypic molding tool and the manufacturing of hybrid beams including process parameters are described. Three-point bending tests and optical measurement technologies are used to characterize the failure behavior and mechanical properties of the produced hybrid beams. It was found that the innovative IMA process enables the manufacturing of hybrid components with high energy absorption and low weight in one step. The mass-specific energy absorption is increased by 693 % compared to pure GMT beams. author: - first_name: Tim full_name: Stallmeister, Tim last_name: Stallmeister - first_name: Thomas full_name: Tröster, Thomas last_name: Tröster citation: ama: Stallmeister T, Tröster T. In-Mold-Assembly of Hybrid Bending Structures by Compression Molding. Key Engineering Materials. 2022;926:1457-1467. doi:10.4028/p-5fxp53 apa: Stallmeister, T., & Tröster, T. (2022). In-Mold-Assembly of Hybrid Bending Structures by Compression Molding. Key Engineering Materials, 926, 1457–1467. https://doi.org/10.4028/p-5fxp53 bibtex: '@article{Stallmeister_Tröster_2022, title={In-Mold-Assembly of Hybrid Bending Structures by Compression Molding}, volume={926}, DOI={10.4028/p-5fxp53}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Stallmeister, Tim and Tröster, Thomas}, year={2022}, pages={1457–1467} }' chicago: 'Stallmeister, Tim, and Thomas Tröster. “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding.” Key Engineering Materials 926 (2022): 1457–67. https://doi.org/10.4028/p-5fxp53.' ieee: 'T. Stallmeister and T. Tröster, “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding,” Key Engineering Materials, vol. 926, pp. 1457–1467, 2022, doi: 10.4028/p-5fxp53.' mla: Stallmeister, Tim, and Thomas Tröster. “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1457–67, doi:10.4028/p-5fxp53. short: T. Stallmeister, T. Tröster, Key Engineering Materials 926 (2022) 1457–1467. date_created: 2022-08-17T05:59:05Z date_updated: 2022-08-17T06:02:07Z doi: 10.4028/p-5fxp53 intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng main_file_link: - open_access: '1' url: https://www.scientific.net/KEM.926.1457 oa: '1' page: 1457-1467 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. status: public title: In-Mold-Assembly of Hybrid Bending Structures by Compression Molding type: journal_article user_id: '45538' volume: 926 year: '2022' ... --- _id: '34280' abstract: - lang: eng text: Clinching is a cost efficient method for joining components in series production. To assure the clinch point’s quality, the force displacement curve during clinching or the bottom thickness are monitored. The most significant geometrical characteristics of the clinch point, neck thickness and undercut, are usually tested destructively by microsectioning. However, micrograph preparation goes ahead with a resetting of elastic deformations and crack-closing after unloading. To generate a comprehensive knowledge of the clinch point’s inner geometry under load, in-situ computed tomography (CT) and acoustic testing (TDA) can be combined. While the TDA is highly sensitive to the inner state of the clinch point, it could detect critical events like crack development during loading. If such events are indicated, the loading process is stopped and a stepped in-situ CT of the following crack and deformation development is performed. In this paper, the concept is applied to the process of clinching itself, providing a detailed three-dimensional insight in the development of the joining zone. A test set-up is used which allows a stepwise clinching of two aluminium sheets EN AW 6014. Furthermore, this set-up is positioned within a CT system. In order to minimize X-ray absorption, a beryllium cylinder is used within the set-up frame and clinching tools are made from Si3N4. The actuator and sensor necessary for the TDA are integrated in the set-up. In regular process steps, the clinching process is interrupted in order to perform a TDA and a CT scan. In order to enhance the visibility of the interface, a thin tin layer is positioned between the sheets prior clinching. It is shown, that the test-set up allows a monitoring of the dynamic behaviour of the specimen during clinching while the CT scans visualize the inner geometry and material flow non-destructively. author: - first_name: Daniel full_name: Köhler, Daniel last_name: Köhler - first_name: Richard full_name: Stephan, Richard last_name: Stephan - first_name: Robert full_name: Kupfer, Robert last_name: Kupfer - first_name: Juliane full_name: Troschitz, Juliane last_name: Troschitz - first_name: Alexander full_name: Brosius, Alexander last_name: Brosius - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: 'Köhler D, Stephan R, Kupfer R, Troschitz J, Brosius A, Gude M. Investigations on Combined in situ CT and Acoustic Analysis during Clinching. In: Key Engineering Materials. Vol 926. Trans Tech Publications, Ltd.; 2022:1489-1497. doi:10.4028/p-32330d' apa: Köhler, D., Stephan, R., Kupfer, R., Troschitz, J., Brosius, A., & Gude, M. (2022). Investigations on Combined in situ CT and Acoustic Analysis during Clinching. Key Engineering Materials, 926, 1489–1497. https://doi.org/10.4028/p-32330d bibtex: '@inproceedings{Köhler_Stephan_Kupfer_Troschitz_Brosius_Gude_2022, title={Investigations on Combined in situ CT and Acoustic Analysis during Clinching}, volume={926}, DOI={10.4028/p-32330d}, booktitle={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Köhler, Daniel and Stephan, Richard and Kupfer, Robert and Troschitz, Juliane and Brosius, Alexander and Gude, Maik}, year={2022}, pages={1489–1497} }' chicago: Köhler, Daniel, Richard Stephan, Robert Kupfer, Juliane Troschitz, Alexander Brosius, and Maik Gude. “Investigations on Combined in Situ CT and Acoustic Analysis during Clinching.” In Key Engineering Materials, 926:1489–97. Trans Tech Publications, Ltd., 2022. https://doi.org/10.4028/p-32330d. ieee: 'D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, and M. Gude, “Investigations on Combined in situ CT and Acoustic Analysis during Clinching,” in Key Engineering Materials, 2022, vol. 926, pp. 1489–1497, doi: 10.4028/p-32330d.' mla: Köhler, Daniel, et al. “Investigations on Combined in Situ CT and Acoustic Analysis during Clinching.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1489–97, doi:10.4028/p-32330d. short: 'D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, M. Gude, in: Key Engineering Materials, Trans Tech Publications, Ltd., 2022, pp. 1489–1497.' date_created: 2022-12-07T16:38:44Z date_updated: 2023-01-02T11:13:59Z department: - _id: '630' doi: 10.4028/p-32330d intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 1489-1497 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '148' name: 'TRR 285 – C04: TRR 285 - Subproject C04' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. status: public title: Investigations on Combined in situ CT and Acoustic Analysis during Clinching type: conference user_id: '14931' volume: 926 year: '2022' ... --- _id: '32413' abstract: - lang: eng text: Background. Clinching is a conventional cold forming process in which two or more sheets can be joined without auxiliary parts. A pre-forming of the parts to be joined, which is introduced by previous manufacturing steps, has an influence on the joining result. When considering the suitability for joining with regard to the formability of the materials, the influence of the preforming steps must be taken into account. The influences of strain hardening and sheet thickness on the joining properties must be investigated. In this context, a Finite Element Method (FEM) based metamodel analysis of the clinching process was carried out in [1] to investigate the robustness of the clinching process with respect to the different material pre-strains. In [2], the method was extended to the load bearing simulation.Procedure. The metamodel from preliminary work based on various FE models, which predicts the load-bearing capacity of a clinched joint influenced by pre-straining, is compared here with experimental data and the accuracy of the metamodel prediction is discussed. For this purpose an experimental procedure was further develop which allows the preforming of metal sheets from which joining specimens can be separated with a certain degree of unidirectional deformation. In the study, the procedure for preparing the joint specimens and the results of the loading tests are presented. Different possible relevant pre-strain combinations are investigated and compared with the simulation results, to validate the FE models and choose suitable metamodel. author: - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Bielak CR, Böhnke M, Bobbert M, Meschut G. Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints. Key Engineering Materials. 2022;926:1516-1526. doi:10.4028/p-5d009y apa: Bielak, C. R., Böhnke, M., Bobbert, M., & Meschut, G. (2022). Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints. Key Engineering Materials, 926, 1516–1526. https://doi.org/10.4028/p-5d009y bibtex: '@article{Bielak_Böhnke_Bobbert_Meschut_2022, title={Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints}, volume={926}, DOI={10.4028/p-5d009y}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson}, year={2022}, pages={1516–1526} }' chicago: 'Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut. “Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints.” Key Engineering Materials 926 (2022): 1516–26. https://doi.org/10.4028/p-5d009y.' ieee: 'C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints,” Key Engineering Materials, vol. 926, pp. 1516–1526, 2022, doi: 10.4028/p-5d009y.' mla: Bielak, Christian Roman, et al. “Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1516–26, doi:10.4028/p-5d009y. short: C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Key Engineering Materials 926 (2022) 1516–1526. date_created: 2022-07-25T11:16:15Z date_updated: 2023-01-12T14:22:52Z department: - _id: '157' doi: 10.4028/p-5d009y intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 1516-1526 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints type: journal_article user_id: '7850' volume: 926 year: '2022' ... --- _id: '33002' abstract: - lang: eng text: Many mechanical material properties show a dependence on the strain rate, e.g. yield stress or elongation at fracture. The quantitative description of the material behavior under dynamic loading is of major importance for the evaluation of crash safety. This is carried out using numerical methods and requires characteristic values for the materials used. For the standardized determination of dynamic characteristic values in sheet metal materials, tensile tests performed according to the guideline from [1]. A particular challenge in dynamic tensile tests is the force measurement during the test. For this purpose, strain gauges are attached on each specimen, wired to the measuring equipment and calibrated. This is a common way to determine a force signal that is as low in vibration and as free of bending moments as possible. The preparation effort for the used strain gauges are enormous. For these reasons, an optical method to determine the force by strain measurement using DIC is presented. The experiments are carried out on a high speed tensile testing system. In combioantion with a 3D DIC high speed system for optical strain measurement. The elastic deformation of the specimen in the dynamometric section is measured using strain gauges and the optical method. The measured signals are then compared to validate the presented method. The investigations are conducted using the dual phase steel material HCT590X and the aluminum material EN AW-6014 T4. Strain rates of up to 240 s-1 are investigated. author: - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Eduard full_name: Unruh, Eduard id: '72763' last_name: Unruh - first_name: Stanislaw full_name: Sell, Stanislaw last_name: Sell - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: David full_name: Hein, David id: '7728' last_name: Hein - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Böhnke M, Unruh E, Sell S, Bobbert M, Hein D, Meschut G. Functionality Study of an Optical Measurement Concept for Local Force Signal Determination in High Strain Rate Tensile Tests. Key Engineering Materials. 2022;926:1564-1572. doi:10.4028/p-wpuzyw apa: Böhnke, M., Unruh, E., Sell, S., Bobbert, M., Hein, D., & Meschut, G. (2022). Functionality Study of an Optical Measurement Concept for Local Force Signal Determination in High Strain Rate Tensile Tests. Key Engineering Materials, 926, 1564–1572. https://doi.org/10.4028/p-wpuzyw bibtex: '@article{Böhnke_Unruh_Sell_Bobbert_Hein_Meschut_2022, title={Functionality Study of an Optical Measurement Concept for Local Force Signal Determination in High Strain Rate Tensile Tests}, volume={926}, DOI={10.4028/p-wpuzyw}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Böhnke, Max and Unruh, Eduard and Sell, Stanislaw and Bobbert, Mathias and Hein, David and Meschut, Gerson}, year={2022}, pages={1564–1572} }' chicago: 'Böhnke, Max, Eduard Unruh, Stanislaw Sell, Mathias Bobbert, David Hein, and Gerson Meschut. “Functionality Study of an Optical Measurement Concept for Local Force Signal Determination in High Strain Rate Tensile Tests.” Key Engineering Materials 926 (2022): 1564–72. https://doi.org/10.4028/p-wpuzyw.' ieee: 'M. Böhnke, E. Unruh, S. Sell, M. Bobbert, D. Hein, and G. Meschut, “Functionality Study of an Optical Measurement Concept for Local Force Signal Determination in High Strain Rate Tensile Tests,” Key Engineering Materials, vol. 926, pp. 1564–1572, 2022, doi: 10.4028/p-wpuzyw.' mla: Böhnke, Max, et al. “Functionality Study of an Optical Measurement Concept for Local Force Signal Determination in High Strain Rate Tensile Tests.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1564–72, doi:10.4028/p-wpuzyw. short: M. Böhnke, E. Unruh, S. Sell, M. Bobbert, D. Hein, G. Meschut, Key Engineering Materials 926 (2022) 1564–1572. conference: location: Braga, Portugal name: ESAFORM 2022 date_created: 2022-08-18T09:33:54Z date_updated: 2023-01-17T09:02:59Z department: - _id: '157' - _id: '630' doi: 10.4028/p-wpuzyw intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 1564-1572 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: Functionality Study of an Optical Measurement Concept for Local Force Signal Determination in High Strain Rate Tensile Tests type: journal_article user_id: '45779' volume: 926 year: '2022' ... --- _id: '32412' abstract: - lang: eng text: Friction-spinning as an innovative incremental forming process enables large degrees of deformation in the field of tube and sheet metal forming due to a self-induced heat generation in the forming zone. This paper presents a new tool and process design with a driven tool for the targeted adjustment of residual stress distributions in the friction-spinning process. Locally adapted residual stress depth distributions are intended to improve the functionality of the friction-spinning workpieces, e.g. by delaying failure or triggering it in a defined way. The new process designs with the driven tool and a subsequent flow-forming operation are investigated regarding the influence on the residual stress depth distributions compared to those of standard friction-spinning process. Residual stress depth distributions are measured with the incremental hole-drilling method. The workpieces (tubular part with a flange) are manufactured using heat-treatable 3.3206 (EN-AW 6060 T6) tubular profiles. It is shown that the residual stress depth distributions change significantly due to the new process designs, which offers new potentials for the targeted adjustment of residual stresses that serve to improve the workpiece properties. author: - first_name: Frederik full_name: Dahms, Frederik id: '64977' last_name: Dahms - first_name: Werner full_name: Homberg, Werner id: '233' last_name: Homberg citation: ama: 'Dahms F, Homberg W. Manufacture of Defined Residual Stress Distributions in the Friction-Spinning Process: Driven Tool and Subsequent Flow-Forming. Key Engineering Materials. 2022;926:683-689. doi:10.4028/p-3rk19y' apa: 'Dahms, F., & Homberg, W. (2022). Manufacture of Defined Residual Stress Distributions in the Friction-Spinning Process: Driven Tool and Subsequent Flow-Forming. Key Engineering Materials, 926, 683–689. https://doi.org/10.4028/p-3rk19y' bibtex: '@article{Dahms_Homberg_2022, title={Manufacture of Defined Residual Stress Distributions in the Friction-Spinning Process: Driven Tool and Subsequent Flow-Forming}, volume={926}, DOI={10.4028/p-3rk19y}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Dahms, Frederik and Homberg, Werner}, year={2022}, pages={683–689} }' chicago: 'Dahms, Frederik, and Werner Homberg. “Manufacture of Defined Residual Stress Distributions in the Friction-Spinning Process: Driven Tool and Subsequent Flow-Forming.” Key Engineering Materials 926 (2022): 683–89. https://doi.org/10.4028/p-3rk19y.' ieee: 'F. Dahms and W. Homberg, “Manufacture of Defined Residual Stress Distributions in the Friction-Spinning Process: Driven Tool and Subsequent Flow-Forming,” Key Engineering Materials, vol. 926, pp. 683–689, 2022, doi: 10.4028/p-3rk19y.' mla: 'Dahms, Frederik, and Werner Homberg. “Manufacture of Defined Residual Stress Distributions in the Friction-Spinning Process: Driven Tool and Subsequent Flow-Forming.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 683–89, doi:10.4028/p-3rk19y.' short: F. Dahms, W. Homberg, Key Engineering Materials 926 (2022) 683–689. conference: end_date: 29 April 2022 location: Braga, Portugal name: 25th International Conference on Material Forming (ESAFORM 2022) start_date: 27 April 2022 date_created: 2022-07-25T08:32:43Z date_updated: 2023-04-27T10:30:38Z department: - _id: '156' doi: 10.4028/p-3rk19y intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 683-689 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: 'Manufacture of Defined Residual Stress Distributions in the Friction-Spinning Process: Driven Tool and Subsequent Flow-Forming' type: journal_article user_id: '64977' volume: 926 year: '2022' ... --- _id: '33999' abstract: - lang: eng text: The production of complex multi-functional, high-strength parts is becoming increasingly important in the industry. Especially with small batch size, the incremental flow forming processes can be advantageous. The production of parts with complex geometry and locally graded material properties currently depicts a great challenge in the flow forming process. At this point, the usage of closed-loop control for the shape and properties could be a feasible new solution. The overall aim in this project is to establish an intelligent closed-loop control system for the wall thickness as well as the α’-martensite content of AISI 304L-workpieces in a flow forming process. To reach this goal, a novel sensor concept for online measurements of the wall thickness reduction and the martensite content during forming process is proposed. It includes the setup of a modified flow forming machine and the integration of the sensor system in the machine control. Additionally, a simulation model for the flow forming process is presented which describes the forming process with regard to the plastic workpiece deformation, the induced α’-martensite fraction, and the sensor behavior. This model was used for designing a closed-loop process control of the wall thickness reduction that was subsequently realized at the real plant including online measured feedback from the sensor system. author: - first_name: Lukas full_name: Kersting, Lukas last_name: Kersting - first_name: Bahman full_name: Arian, Bahman id: '36287' last_name: Arian - first_name: Julian Rozo full_name: Vasquez, Julian Rozo last_name: Vasquez - first_name: Ansgar full_name: Trächtler, Ansgar id: '552' last_name: Trächtler - first_name: Werner full_name: Homberg, Werner id: '233' last_name: Homberg - first_name: Frank full_name: Walther, Frank last_name: Walther citation: ama: Kersting L, Arian B, Vasquez JR, Trächtler A, Homberg W, Walther F. Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes. Key Engineering Materials. 2022;926:862-874. doi:10.4028/p-yp2hj3 apa: Kersting, L., Arian, B., Vasquez, J. R., Trächtler, A., Homberg, W., & Walther, F. (2022). Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes. Key Engineering Materials, 926, 862–874. https://doi.org/10.4028/p-yp2hj3 bibtex: '@article{Kersting_Arian_Vasquez_Trächtler_Homberg_Walther_2022, title={Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes}, volume={926}, DOI={10.4028/p-yp2hj3}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Kersting, Lukas and Arian, Bahman and Vasquez, Julian Rozo and Trächtler, Ansgar and Homberg, Werner and Walther, Frank}, year={2022}, pages={862–874} }' chicago: 'Kersting, Lukas, Bahman Arian, Julian Rozo Vasquez, Ansgar Trächtler, Werner Homberg, and Frank Walther. “Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes.” Key Engineering Materials 926 (2022): 862–74. https://doi.org/10.4028/p-yp2hj3.' ieee: 'L. Kersting, B. Arian, J. R. Vasquez, A. Trächtler, W. Homberg, and F. Walther, “Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes,” Key Engineering Materials, vol. 926, pp. 862–874, 2022, doi: 10.4028/p-yp2hj3.' mla: Kersting, Lukas, et al. “Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 862–74, doi:10.4028/p-yp2hj3. short: L. Kersting, B. Arian, J.R. Vasquez, A. Trächtler, W. Homberg, F. Walther, Key Engineering Materials 926 (2022) 862–874. date_created: 2022-11-04T08:27:33Z date_updated: 2023-05-02T08:19:13Z department: - _id: '156' - _id: '153' - _id: '241' doi: 10.4028/p-yp2hj3 intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 862-874 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes type: journal_article user_id: '36287' volume: 926 year: '2022' ... --- _id: '32869' abstract: - lang: eng text: The further development of in-mold-assembly (IMA) technologies for structural hybrid components is of great importance for increasing the economic efficiency and thus the application potential. This paper presents an innovative IMA process concept for the manufacturing of bending loaded hybrid components consisting of two outer metal belts and an inner core structure made of glass mat reinforced thermoplastic (GMT). In this process, the core structure, which is provided with stiffening ribs and functional elements, is formed and joined to two metal belts in one single step. For experimental validation of the concept, the development of a prototypic molding tool and the manufacturing of hybrid beams including process parameters are described. Three-point bending tests and optical measurement technologies are used to characterize the failure behavior and mechanical properties of the produced hybrid beams. It was found that the innovative IMA process enables the manufacturing of hybrid components with high energy absorption and low weight in one step. The mass-specific energy absorption is increased by 693 % compared to pure GMT beams. author: - first_name: Tim full_name: Stallmeister, Tim id: '45538' last_name: Stallmeister - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster citation: ama: Stallmeister T, Tröster T. In-Mold-Assembly of Hybrid Bending Structures by Compression Molding. Key Engineering Materials. 2022;926:1457-1467. doi:10.4028/p-5fxp53 apa: Stallmeister, T., & Tröster, T. (2022). In-Mold-Assembly of Hybrid Bending Structures by Compression Molding. Key Engineering Materials, 926, 1457–1467. https://doi.org/10.4028/p-5fxp53 bibtex: '@article{Stallmeister_Tröster_2022, title={In-Mold-Assembly of Hybrid Bending Structures by Compression Molding}, volume={926}, DOI={10.4028/p-5fxp53}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Stallmeister, Tim and Tröster, Thomas}, year={2022}, pages={1457–1467} }' chicago: 'Stallmeister, Tim, and Thomas Tröster. “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding.” Key Engineering Materials 926 (2022): 1457–67. https://doi.org/10.4028/p-5fxp53.' ieee: 'T. Stallmeister and T. Tröster, “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding,” Key Engineering Materials, vol. 926, pp. 1457–1467, 2022, doi: 10.4028/p-5fxp53.' mla: Stallmeister, Tim, and Thomas Tröster. “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1457–67, doi:10.4028/p-5fxp53. short: T. Stallmeister, T. Tröster, Key Engineering Materials 926 (2022) 1457–1467. date_created: 2022-08-17T07:28:31Z date_updated: 2023-05-03T07:44:40Z department: - _id: '9' - _id: '149' - _id: '321' doi: 10.4028/p-5fxp53 intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 1457-1467 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: In-Mold-Assembly of Hybrid Bending Structures by Compression Molding type: journal_article user_id: '14931' volume: 926 year: '2022' ... --- _id: '51197' abstract: - lang: eng text: Clinching is a cost efficient method for joining components in series production. To assure the clinch point’s quality, the force displacement curve during clinching or the bottom thickness are monitored. The most significant geometrical characteristics of the clinch point, neck thickness and undercut, are usually tested destructively by microsectioning. However, micrograph preparation goes ahead with a resetting of elastic deformations and crack-closing after unloading. To generate a comprehensive knowledge of the clinch point’s inner geometry under load, in-situ computed tomography (CT) and acoustic testing (TDA) can be combined. While the TDA is highly sensitive to the inner state of the clinch point, it could detect critical events like crack development during loading. If such events are indicated, the loading process is stopped and a stepped in-situ CT of the following crack and deformation development is performed. In this paper, the concept is applied to the process of clinching itself, providing a detailed three-dimensional insight in the development of the joining zone. A test set-up is used which allows a stepwise clinching of two aluminium sheets EN AW 6014. Furthermore, this set-up is positioned within a CT system. In order to minimize X-ray absorption, a beryllium cylinder is used within the set-up frame and clinching tools are made from Si3N4. The actuator and sensor necessary for the TDA are integrated in the set-up. In regular process steps, the clinching process is interrupted in order to perform a TDA and a CT scan. In order to enhance the visibility of the interface, a thin tin layer is positioned between the sheets prior clinching. It is shown, that the test-set up allows a monitoring of the dynamic behaviour of the specimen during clinching while the CT scans visualize the inner geometry and material flow non-destructively. author: - first_name: Daniel full_name: Köhler, Daniel last_name: Köhler - first_name: Richard full_name: Stephan, Richard last_name: Stephan - first_name: Robert full_name: Kupfer, Robert last_name: Kupfer - first_name: Juliane full_name: Troschitz, Juliane last_name: Troschitz - first_name: Alexander full_name: Brosius, Alexander last_name: Brosius - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: Köhler D, Stephan R, Kupfer R, Troschitz J, Brosius A, Gude M. Investigations on Combined &lt;i&gt;In Situ&lt;/i&gt; CT and Acoustic Analysis during Clinching. Key Engineering Materials. 2022;926:1489-1497. doi:10.4028/p-32330d apa: Köhler, D., Stephan, R., Kupfer, R., Troschitz, J., Brosius, A., & Gude, M. (2022). Investigations on Combined &lt;i&gt;In Situ&lt;/i&gt; CT and Acoustic Analysis during Clinching. Key Engineering Materials, 926, 1489–1497. https://doi.org/10.4028/p-32330d bibtex: '@article{Köhler_Stephan_Kupfer_Troschitz_Brosius_Gude_2022, title={Investigations on Combined &lt;i&gt;In Situ&lt;/i&gt; CT and Acoustic Analysis during Clinching}, volume={926}, DOI={10.4028/p-32330d}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Köhler, Daniel and Stephan, Richard and Kupfer, Robert and Troschitz, Juliane and Brosius, Alexander and Gude, Maik}, year={2022}, pages={1489–1497} }' chicago: 'Köhler, Daniel, Richard Stephan, Robert Kupfer, Juliane Troschitz, Alexander Brosius, and Maik Gude. “Investigations on Combined &lt;I&gt;In Situ&lt;/I&gt; CT and Acoustic Analysis during Clinching.” Key Engineering Materials 926 (2022): 1489–97. https://doi.org/10.4028/p-32330d.' ieee: 'D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, and M. Gude, “Investigations on Combined &lt;i&gt;In Situ&lt;/i&gt; CT and Acoustic Analysis during Clinching,” Key Engineering Materials, vol. 926, pp. 1489–1497, 2022, doi: 10.4028/p-32330d.' mla: Köhler, Daniel, et al. “Investigations on Combined &lt;I&gt;In Situ&lt;/I&gt; CT and Acoustic Analysis during Clinching.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1489–97, doi:10.4028/p-32330d. short: D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, M. Gude, Key Engineering Materials 926 (2022) 1489–1497. date_created: 2024-02-06T15:04:45Z date_updated: 2025-06-02T20:21:13Z department: - _id: '157' - _id: '43' doi: 10.4028/p-32330d intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 1489-1497 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '148' name: 'TRR 285 – C04: TRR 285 - Subproject C04' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. status: public title: Investigations on Combined <i>In Situ</i> CT and Acoustic Analysis during Clinching type: journal_article user_id: '83408' volume: 926 year: '2022' ... --- _id: '37647' abstract: - lang: eng text: Mechanical joining processes are an essential part of modern lightweight construction. They permit materials of different types to be joined in a way that is suitable for the loads involved. These processes reach their limits, however, as soon as the boundary conditions change. In most cases, these elements are specially adapted to the joining point and cannot be used universally. Changes require cost-intensive adaptation of both the element and the process control, thus making production more complex. This results in high costs due to the increased number of auxiliary joining element variants required and reduces the economic efficiency of mechanical joining. One approach to overcoming this issue is the use of adaptive auxiliary joining elements formed by friction spinning. This article presents the current state of research on pre-hole-free joining with adaptive joining elements. The overall process chain is illustrated, explained and analyzed. Special attention is paid to demonstrating the feasibility of pre-hole-free joining with adaptive joining elements. The chosen mechanical parameters are subsequently listed. Finally, a comprehensive outlook of the future development potential is derived. article_type: original author: - first_name: Christian full_name: Wischer, Christian last_name: Wischer - first_name: Werner full_name: Homberg, Werner last_name: Homberg citation: ama: Wischer C, Homberg W. Further Development of an Adaptive Joining Technique Based on Friction Spinning to Produce Pre-Hole-Free Joints. Key Engineering Materials. 2022;926:1468-1478. doi:10.4028/p-1n6741 apa: Wischer, C., & Homberg, W. (2022). Further Development of an Adaptive Joining Technique Based on Friction Spinning to Produce Pre-Hole-Free Joints. Key Engineering Materials, 926, 1468–1478. https://doi.org/10.4028/p-1n6741 bibtex: '@article{Wischer_Homberg_2022, title={Further Development of an Adaptive Joining Technique Based on Friction Spinning to Produce Pre-Hole-Free Joints}, volume={926}, DOI={10.4028/p-1n6741}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Wischer, Christian and Homberg, Werner}, year={2022}, pages={1468–1478} }' chicago: 'Wischer, Christian, and Werner Homberg. “Further Development of an Adaptive Joining Technique Based on Friction Spinning to Produce Pre-Hole-Free Joints.” Key Engineering Materials 926 (2022): 1468–78. https://doi.org/10.4028/p-1n6741.' ieee: 'C. Wischer and W. Homberg, “Further Development of an Adaptive Joining Technique Based on Friction Spinning to Produce Pre-Hole-Free Joints,” Key Engineering Materials, vol. 926, pp. 1468–1478, 2022, doi: 10.4028/p-1n6741.' mla: Wischer, Christian, and Werner Homberg. “Further Development of an Adaptive Joining Technique Based on Friction Spinning to Produce Pre-Hole-Free Joints.” Key Engineering Materials, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1468–78, doi:10.4028/p-1n6741. short: C. Wischer, W. Homberg, Key Engineering Materials 926 (2022) 1468–1478. date_created: 2023-01-20T07:47:18Z date_updated: 2026-05-12T12:00:20Z department: - _id: '156' doi: 10.4028/p-1n6741 intvolume: ' 926' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 1468-1478 project: - _id: '147' name: 'TRR 285 – C03: TRR 285 - Subproject C03' - _id: '133' name: TRR 285 - Project Area C - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: Further Development of an Adaptive Joining Technique Based on Friction Spinning to Produce Pre-Hole-Free Joints type: journal_article user_id: '7850' volume: 926 year: '2022' ... --- _id: '21810' author: - first_name: Mortaza full_name: Otroshi, Mortaza id: '71269' last_name: Otroshi orcid: 0000-0002-8652-9209 - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Lukas full_name: Masendorf, Lukas last_name: Masendorf - first_name: Alfons full_name: Esderts, Alfons last_name: Esderts citation: ama: Otroshi M, Meschut G, Bielak CR, Masendorf L, Esderts A. Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components. Key Engineering Materials. 2021;883:35-40. doi:https://doi.org/10.4028/www.scientific.net/KEM.883.35 apa: Otroshi, M., Meschut, G., Bielak, C. R., Masendorf, L., & Esderts, A. (2021). Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components. Key Engineering Materials, 883, 35–40. https://doi.org/10.4028/www.scientific.net/KEM.883.35 bibtex: '@article{Otroshi_Meschut_Bielak_Masendorf_Esderts_2021, title={Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components}, volume={883}, DOI={https://doi.org/10.4028/www.scientific.net/KEM.883.35}, journal={Key Engineering Materials}, publisher={Trans Tech Publications Ltd}, author={Otroshi, Mortaza and Meschut, Gerson and Bielak, Christian Roman and Masendorf, Lukas and Esderts, Alfons}, year={2021}, pages={35–40} }' chicago: 'Otroshi, Mortaza, Gerson Meschut, Christian Roman Bielak, Lukas Masendorf, and Alfons Esderts. “Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components.” Key Engineering Materials 883 (2021): 35–40. https://doi.org/10.4028/www.scientific.net/KEM.883.35.' ieee: 'M. Otroshi, G. Meschut, C. R. Bielak, L. Masendorf, and A. Esderts, “Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components,” Key Engineering Materials, vol. 883, pp. 35–40, 2021, doi: https://doi.org/10.4028/www.scientific.net/KEM.883.35.' mla: Otroshi, Mortaza, et al. “Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components.” Key Engineering Materials, vol. 883, Trans Tech Publications Ltd, 2021, pp. 35–40, doi:https://doi.org/10.4028/www.scientific.net/KEM.883.35. short: M. Otroshi, G. Meschut, C.R. Bielak, L. Masendorf, A. Esderts, Key Engineering Materials 883 (2021) 35–40. date_created: 2021-04-27T08:33:03Z date_updated: 2022-04-25T07:49:04Z department: - _id: '157' doi: https://doi.org/10.4028/www.scientific.net/KEM.883.35 intvolume: ' 883' language: - iso: eng page: 35-40 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications Ltd quality_controlled: '1' status: public title: Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components type: journal_article user_id: '71269' volume: 883 year: '2021' ... --- _id: '34227' abstract: - lang: eng text: In order to reduce the fuel consumption and consequently the greenhouse emissions, the automotive industry is implementing lightweight constructions in the body in white production. As a result, the use of aluminum alloys is continuously increasing. Due to poor weldability of aluminum in combination with other materials, mechanical joining technologies like clinching are increasingly used. In order to predict relevant characteristics of clinched joints and to ensure the reliability of the process, it is simulated numerically during product development processes. In this regard the predictive accuracy of the simulated process highly depends on the implemented friction model. In particular, the frictional behavior between the sheet metals affects the geometrical formation of the clinched joint significantly. This paper presents a testing method, which enables to determine the frictional coefficients between sheet metal materials for the simulation of clinching processes. For this purpose, the correlation of interface pressure and the relative velocity between aluminum sheets in clinching processes is investigated using numerical simulation. Furthermore, the developed testing method focuses on the specimen geometry as well as the reproduction of the occurring friction conditions between two sheet metal materials in clinching processes. Based on a methodical approach the test setup is explained and the functionality of the method is proven by experimental tests using sheet metal material EN AW6014. author: - first_name: Moritz Sebastian full_name: Rossel, Moritz Sebastian id: '44503' last_name: Rossel - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Rossel MS, Böhnke M, Bielak CR, Bobbert M, Meschut G. Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes. Key Engineering Materials. 2021;883:81-88. doi:10.4028/www.scientific.net/kem.883.81 apa: Rossel, M. S., Böhnke, M., Bielak, C. R., Bobbert, M., & Meschut, G. (2021). Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes. Key Engineering Materials, 883, 81–88. https://doi.org/10.4028/www.scientific.net/kem.883.81 bibtex: '@article{Rossel_Böhnke_Bielak_Bobbert_Meschut_2021, title={Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.81}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Rossel, Moritz Sebastian and Böhnke, Max and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2021}, pages={81–88} }' chicago: 'Rossel, Moritz Sebastian, Max Böhnke, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes.” Key Engineering Materials 883 (2021): 81–88. https://doi.org/10.4028/www.scientific.net/kem.883.81.' ieee: 'M. S. Rossel, M. Böhnke, C. R. Bielak, M. Bobbert, and G. Meschut, “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes,” Key Engineering Materials, vol. 883, pp. 81–88, 2021, doi: 10.4028/www.scientific.net/kem.883.81.' mla: Rossel, Moritz Sebastian, et al. “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes.” Key Engineering Materials, vol. 883, Trans Tech Publications, Ltd., 2021, pp. 81–88, doi:10.4028/www.scientific.net/kem.883.81. short: M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, Key Engineering Materials 883 (2021) 81–88. date_created: 2022-12-05T21:57:07Z date_updated: 2023-03-09T11:43:31Z department: - _id: '630' - _id: '157' doi: 10.4028/www.scientific.net/kem.883.81 intvolume: ' 883' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 81-88 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes type: journal_article user_id: '7850' volume: 883 year: '2021' ... --- _id: '30675' abstract: - lang: eng text: In many areas of product manufacturing constructions consist of individual components and metal sheets that are joined together to form complex structures. A simple and industrial common method for joining dissimilar and coated materials is clinching. During the joining process and due to the service load cracks can occur in the area of the joint, propagate due to cyclic loading and consequently lead to structural failure. For the prevention of these damage cases, first of all knowledge about the fracture mechanical material parameters regarding the original material state of the sheet metals used within the clinching process are essential.Within the scope of this paper experimental and numerical preliminary investigations regarding the fracture mechanical behavior of sheet metals used within the clinching process are presented. Due to the low thickness of 1.5 mm of the material sheets, the development of a new specimen is necessary to determine the crack growth rate curve including the fracture mechanical parameters like the threshold against crack growth ΔKI,th and the fracture toughness KIC of the base material HCT590X. For the experimental determination of the crack growth rate curve the numerical calculation of the geometry factor function as well as the calibration function of this special specimen are essential. After the experimental validation of the numerically determined calibration function, crack growth rate curves are determined for the stress ratios R = 0.1 and R = 0.3 to examine the mean stress sensitivity. In addition, the different rolling directions of 0° and 90° in relation to the initial crack are taken into account in order to investigate the influence of the anisotropy due to rolling. author: - first_name: Deborah full_name: Weiß, Deborah id: '45673' last_name: Weiß - first_name: Britta full_name: Schramm, Britta id: '4668' last_name: Schramm - first_name: Gunter full_name: Kullmer, Gunter id: '291' last_name: Kullmer citation: ama: 'Weiß D, Schramm B, Kullmer G. Numerical and Experimental Fracture Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X. In: Key Engineering Materials. Vol 883. Trans Tech Publications, Ltd.; 2021:127-132. doi:10.4028/www.scientific.net/kem.883.127' apa: Weiß, D., Schramm, B., & Kullmer, G. (2021). Numerical and Experimental Fracture Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X. Key Engineering Materials, 883, 127–132. https://doi.org/10.4028/www.scientific.net/kem.883.127 bibtex: '@inproceedings{Weiß_Schramm_Kullmer_2021, title={Numerical and Experimental Fracture Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.127}, booktitle={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Weiß, Deborah and Schramm, Britta and Kullmer, Gunter}, year={2021}, pages={127–132} }' chicago: Weiß, Deborah, Britta Schramm, and Gunter Kullmer. “Numerical and Experimental Fracture Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X.” In Key Engineering Materials, 883:127–32. Trans Tech Publications, Ltd., 2021. https://doi.org/10.4028/www.scientific.net/kem.883.127. ieee: 'D. Weiß, B. Schramm, and G. Kullmer, “Numerical and Experimental Fracture Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X,” in Key Engineering Materials, online, 2021, vol. 883, pp. 127–132, doi: 10.4028/www.scientific.net/kem.883.127.' mla: Weiß, Deborah, et al. “Numerical and Experimental Fracture Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X.” Key Engineering Materials, vol. 883, Trans Tech Publications, Ltd., 2021, pp. 127–32, doi:10.4028/www.scientific.net/kem.883.127. short: 'D. Weiß, B. Schramm, G. Kullmer, in: Key Engineering Materials, Trans Tech Publications, Ltd., 2021, pp. 127–132.' conference: end_date: 2021-03-31 location: online name: 19th International Conference on Sheet Metal start_date: 2021-03-29 date_created: 2022-03-29T08:09:01Z date_updated: 2023-04-27T10:13:19Z department: - _id: '143' doi: 10.4028/www.scientific.net/kem.883.127 intvolume: ' 883' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 127-132 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: Numerical and Experimental Fracture Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X type: conference user_id: '45673' volume: 883 year: '2021' ... --- _id: '34226' abstract: - lang: eng text: The increasing use of multi-material constructions lead to a continuous increase in the use of mechanical joining techniques due to the wide range of joining possibilities as well as the high load-bearing capacities of the joints. Nevertheless, the currently rigid tool systems are not able to react to changing boundary conditions, like changing the material-geometry-combination. Therefore research work is crucial with regard to versatile joining systems. In this paper, a new approach for a versatile self-piercing riveting process considering the joining system as well as the auxiliary joining part is presented. author: - first_name: Fabian full_name: Kappe, Fabian id: '66459' last_name: Kappe - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Kappe F, Bobbert M, Meschut G. New Approach for Versatile Self Piercing Riveting: Joining System and Auxiliary Part. Key Engineering Materials. 2021;883:3-10. doi:10.4028/www.scientific.net/kem.883.3' apa: 'Kappe, F., Bobbert, M., & Meschut, G. (2021). New Approach for Versatile Self Piercing Riveting: Joining System and Auxiliary Part. Key Engineering Materials, 883, 3–10. https://doi.org/10.4028/www.scientific.net/kem.883.3' bibtex: '@article{Kappe_Bobbert_Meschut_2021, title={New Approach for Versatile Self Piercing Riveting: Joining System and Auxiliary Part}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.3}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Kappe, Fabian and Bobbert, Mathias and Meschut, Gerson}, year={2021}, pages={3–10} }' chicago: 'Kappe, Fabian, Mathias Bobbert, and Gerson Meschut. “New Approach for Versatile Self Piercing Riveting: Joining System and Auxiliary Part.” Key Engineering Materials 883 (2021): 3–10. https://doi.org/10.4028/www.scientific.net/kem.883.3.' ieee: 'F. Kappe, M. Bobbert, and G. Meschut, “New Approach for Versatile Self Piercing Riveting: Joining System and Auxiliary Part,” Key Engineering Materials, vol. 883, pp. 3–10, 2021, doi: 10.4028/www.scientific.net/kem.883.3.' mla: 'Kappe, Fabian, et al. “New Approach for Versatile Self Piercing Riveting: Joining System and Auxiliary Part.” Key Engineering Materials, vol. 883, Trans Tech Publications, Ltd., 2021, pp. 3–10, doi:10.4028/www.scientific.net/kem.883.3.' short: F. Kappe, M. Bobbert, G. Meschut, Key Engineering Materials 883 (2021) 3–10. date_created: 2022-12-05T21:54:38Z date_updated: 2023-04-27T08:52:59Z department: - _id: '630' - _id: '157' doi: 10.4028/www.scientific.net/kem.883.3 intvolume: ' 883' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 3-10 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. quality_controlled: '1' status: public title: 'New Approach for Versatile Self Piercing Riveting: Joining System and Auxiliary Part' type: journal_article user_id: '66459' volume: 883 year: '2021' ... --- _id: '24541' abstract: - lang: eng text: The mechanical properties of joined structures are determined considerably by the chosen joining technology. With the aim of providing a method that enables a faster and more profound decision-making in the spatial distribution of joining points during product development, a new method for the load path analysis of joining points is presented. For an exemplary car body, the load type in the joining elements, i.e. pure tensile, shear and combined tensile-shear loads, is determined using finite element analysis (FEA). Based on the evaluated loads, the resulting load paths in selected joining points are analyzed using a 2D FE-model of a clinching point. State of the art methods for load path analysis are dependent on the selected coordinate system or the existing stress state. Thus, a general statement about the load transmission path is not possible at this time. Here, a novel method for the analysis of load paths is used, which is independent of the alignment of the analyzed geometry. The basic assumption of the new load path analysis method was confirmed by using a simple specimen with a square hole in different orientations. The results presented here show a possibility to display the load transmission path invariantly. In further steps, the method will be extended for 3D analysis and the investigation of more complex assemblies. The primary goal of this methodical approach is an even load distribution over the joining elements and the component. This will provide a basis for future design approaches aimed at reducing the number of joining elements in joined structures. author: - first_name: Christian full_name: Steinfelder, Christian last_name: Steinfelder - first_name: Sven full_name: Martin, Sven id: '38177' last_name: Martin - first_name: Alexander full_name: Brosius, Alexander last_name: Brosius - first_name: Thomas full_name: Tröster, Thomas last_name: Tröster citation: ama: Steinfelder C, Martin S, Brosius A, Tröster T. Load Path Transmission in Joining Elements. Key Engineering Materials. Published online 2021:73-80. doi:10.4028/www.scientific.net/kem.883.73 apa: Steinfelder, C., Martin, S., Brosius, A., & Tröster, T. (2021). Load Path Transmission in Joining Elements. Key Engineering Materials, 73–80. https://doi.org/10.4028/www.scientific.net/kem.883.73 bibtex: '@article{Steinfelder_Martin_Brosius_Tröster_2021, title={Load Path Transmission in Joining Elements}, DOI={10.4028/www.scientific.net/kem.883.73}, journal={Key Engineering Materials}, author={Steinfelder, Christian and Martin, Sven and Brosius, Alexander and Tröster, Thomas}, year={2021}, pages={73–80} }' chicago: Steinfelder, Christian, Sven Martin, Alexander Brosius, and Thomas Tröster. “Load Path Transmission in Joining Elements.” Key Engineering Materials, 2021, 73–80. https://doi.org/10.4028/www.scientific.net/kem.883.73. ieee: 'C. Steinfelder, S. Martin, A. Brosius, and T. Tröster, “Load Path Transmission in Joining Elements,” Key Engineering Materials, pp. 73–80, 2021, doi: 10.4028/www.scientific.net/kem.883.73.' mla: Steinfelder, Christian, et al. “Load Path Transmission in Joining Elements.” Key Engineering Materials, 2021, pp. 73–80, doi:10.4028/www.scientific.net/kem.883.73. short: C. Steinfelder, S. Martin, A. Brosius, T. Tröster, Key Engineering Materials (2021) 73–80. date_created: 2021-09-16T08:23:00Z date_updated: 2023-04-28T11:57:49Z department: - _id: '321' - _id: '149' - _id: '630' doi: 10.4028/www.scientific.net/kem.883.73 language: - iso: eng page: 73-80 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '132' name: 'TRR 285 - B: TRR 285 - Project Area B' - _id: '140' name: 'TRR 285 – B01: TRR 285 - Subproject B01' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published quality_controlled: '1' status: public title: Load Path Transmission in Joining Elements type: journal_article user_id: '38177' year: '2021' ... --- _id: '51202' abstract: - lang: eng text: When joining lightweight parts of various materials, clinching is a cost efficient solution. In a production line, the quality of a clinch point is primarily controlled by measurement of dimensions, which are accessible from outside. However, methods such as visual testing and measuring the bottom thickness as well as the outer diameter are not able to deliver any information about the most significant geometrical characteristic of the clinch point, neck thickness and undercut. Furthermore, ex-situ destructive methods such as microsectioning cannot detect elastic deformations and cracks that close after unloading. In order to exceed the current limits, a new non-destructive in-situ testing method for the clinching process is necessary. This work proposes a concept to characterize clinch points in-situ by combining two complementary non-destructive methods, namely, computed tomography (CT) and ultrasonic testing. Firstly, clinch points with different geometrical characteristics are analysed experimentally using ex-situ CT to get a highly spatially resolved 3D-image of the object. In this context, highly X-ray attenuating materials enhancing the visibility of the sheet-sheet interface are investigated. Secondly, the test specimens are modelled using finite element method (FEM) and a transient dynamic analysis (TDA) is conducted to study the effect of the geometrical differences on the deformation energy and to qualify the TDA as a fast in-situ non-destructive method for characterizing clinch points at high temporal resolution. author: - first_name: Daniel full_name: Köhler, Daniel last_name: Köhler - first_name: Behdad full_name: Sadeghian, Behdad last_name: Sadeghian - first_name: Robert full_name: Kupfer, Robert last_name: Kupfer - first_name: Juliane full_name: Troschitz, Juliane last_name: Troschitz - first_name: Maik full_name: Gude, Maik last_name: Gude - first_name: Alexander full_name: Brosius, Alexander last_name: Brosius citation: ama: Köhler D, Sadeghian B, Kupfer R, Troschitz J, Gude M, Brosius A. A Method for Characterization of Geometric Deviations in Clinch Points with Computed Tomography and Transient Dynamic Analysis. Key Engineering Materials. 2021;883:89-96. doi:10.4028/www.scientific.net/kem.883.89 apa: Köhler, D., Sadeghian, B., Kupfer, R., Troschitz, J., Gude, M., & Brosius, A. (2021). A Method for Characterization of Geometric Deviations in Clinch Points with Computed Tomography and Transient Dynamic Analysis. Key Engineering Materials, 883, 89–96. https://doi.org/10.4028/www.scientific.net/kem.883.89 bibtex: '@article{Köhler_Sadeghian_Kupfer_Troschitz_Gude_Brosius_2021, title={A Method for Characterization of Geometric Deviations in Clinch Points with Computed Tomography and Transient Dynamic Analysis}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.89}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Köhler, Daniel and Sadeghian, Behdad and Kupfer, Robert and Troschitz, Juliane and Gude, Maik and Brosius, Alexander}, year={2021}, pages={89–96} }' chicago: 'Köhler, Daniel, Behdad Sadeghian, Robert Kupfer, Juliane Troschitz, Maik Gude, and Alexander Brosius. “A Method for Characterization of Geometric Deviations in Clinch Points with Computed Tomography and Transient Dynamic Analysis.” Key Engineering Materials 883 (2021): 89–96. https://doi.org/10.4028/www.scientific.net/kem.883.89.' ieee: 'D. Köhler, B. Sadeghian, R. Kupfer, J. Troschitz, M. Gude, and A. Brosius, “A Method for Characterization of Geometric Deviations in Clinch Points with Computed Tomography and Transient Dynamic Analysis,” Key Engineering Materials, vol. 883, pp. 89–96, 2021, doi: 10.4028/www.scientific.net/kem.883.89.' mla: Köhler, Daniel, et al. “A Method for Characterization of Geometric Deviations in Clinch Points with Computed Tomography and Transient Dynamic Analysis.” Key Engineering Materials, vol. 883, Trans Tech Publications, Ltd., 2021, pp. 89–96, doi:10.4028/www.scientific.net/kem.883.89. short: D. Köhler, B. Sadeghian, R. Kupfer, J. Troschitz, M. Gude, A. Brosius, Key Engineering Materials 883 (2021) 89–96. date_created: 2024-02-06T15:06:14Z date_updated: 2025-06-02T20:19:57Z department: - _id: '157' - _id: '43' doi: 10.4028/www.scientific.net/kem.883.89 intvolume: ' 883' keyword: - Mechanical Engineering - Mechanics of Materials - General Materials Science language: - iso: eng page: 89-96 project: - _id: '130' grant_number: '418701707' name: 'TRR 285: TRR 285' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '148' name: 'TRR 285 – C04: TRR 285 - Subproject C04' publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published publisher: Trans Tech Publications, Ltd. status: public title: A Method for Characterization of Geometric Deviations in Clinch Points with Computed Tomography and Transient Dynamic Analysis type: journal_article user_id: '83408' volume: 883 year: '2021' ... --- _id: '20282' abstract: - lang: eng text: Modern developments in the automotive sector are motivated by the objective of lowering the emission of pollutants. In contrast, growing demands for safety and comfort lead to a potential increase of the weight of vehicles. Thus, the consequent use of lightweight design is indispensable. This includes the use of different materials for the construction of car bodies. Because of various material properties, joining of dissimilar materials is challenging and requires often the application of non-thermic processes like riveting or clinching. These processes are limited by the mechanical properties of the joining partners. Especially the increasing use of ultra-high strength alloys, like the hot stamped steel 22MnB5, makes the development of new joining technologies necessary. One of these innovative technologies is shear-clinching. By combining shear-cutting and clinching in one process, this technology produces durable and tight connections of dissimilar materials with high differences regarding strength and formability. In contrast to shear-cutting the die-sided material has no contact with the punch. Since the process of shear-clinching is a combination of cutting and joining using the same tool, the tool loads differ from common shear-cutting. Especially cutting hot stamped steels is a challenge due to their high ultimate strength which leads to high tool loads. Thus, the analysis of the load condition is essential for the dimensioning of durable and wear resistant tools. Hence, the scope of this paper is a numerical investigation of the tool loads during the indirect cutting process and the subsequent step of joining by forming during shear-clinching. Since an experimental investigation of the occurring tool loads in the closed process is not practicable, the finite element method has to be used. Therefore, a damage-based numerical model is set up to enable the coupled simulation of the combined cutting and joining process and the resulting tool loads. This allows the analysis of the loads during the whole process, identifying the influences of materials and sheet thicknesses. article_type: original author: - first_name: Sebastian full_name: Wiesenmayer, Sebastian last_name: Wiesenmayer - first_name: Martin full_name: Müller, Martin last_name: Müller - first_name: Peter full_name: Dornberger, Peter last_name: Dornberger - first_name: Daxin full_name: Han, Daxin id: '36544' last_name: Han - first_name: Réjane full_name: Hörhold, Réjane last_name: Hörhold - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Marion full_name: Merklein, Marion last_name: Merklein citation: ama: Wiesenmayer S, Müller M, Dornberger P, et al. Numerical Investigation of the Tool Load in Joining by Forming of Dissimilar Materials Using Shear-Clinching Technology. Key Engineering Materials. 2018:397-404. doi:10.4028/www.scientific.net/kem.767.397 apa: Wiesenmayer, S., Müller, M., Dornberger, P., Han, D., Hörhold, R., Meschut, G., & Merklein, M. (2018). Numerical Investigation of the Tool Load in Joining by Forming of Dissimilar Materials Using Shear-Clinching Technology. Key Engineering Materials, 397–404. https://doi.org/10.4028/www.scientific.net/kem.767.397 bibtex: '@article{Wiesenmayer_Müller_Dornberger_Han_Hörhold_Meschut_Merklein_2018, title={Numerical Investigation of the Tool Load in Joining by Forming of Dissimilar Materials Using Shear-Clinching Technology}, DOI={10.4028/www.scientific.net/kem.767.397}, journal={Key Engineering Materials}, author={Wiesenmayer, Sebastian and Müller, Martin and Dornberger, Peter and Han, Daxin and Hörhold, Réjane and Meschut, Gerson and Merklein, Marion}, year={2018}, pages={397–404} }' chicago: Wiesenmayer, Sebastian, Martin Müller, Peter Dornberger, Daxin Han, Réjane Hörhold, Gerson Meschut, and Marion Merklein. “Numerical Investigation of the Tool Load in Joining by Forming of Dissimilar Materials Using Shear-Clinching Technology.” Key Engineering Materials, 2018, 397–404. https://doi.org/10.4028/www.scientific.net/kem.767.397. ieee: S. Wiesenmayer et al., “Numerical Investigation of the Tool Load in Joining by Forming of Dissimilar Materials Using Shear-Clinching Technology,” Key Engineering Materials, pp. 397–404, 2018. mla: Wiesenmayer, Sebastian, et al. “Numerical Investigation of the Tool Load in Joining by Forming of Dissimilar Materials Using Shear-Clinching Technology.” Key Engineering Materials, 2018, pp. 397–404, doi:10.4028/www.scientific.net/kem.767.397. short: S. Wiesenmayer, M. Müller, P. Dornberger, D. Han, R. Hörhold, G. Meschut, M. Merklein, Key Engineering Materials (2018) 397–404. date_created: 2020-11-04T14:32:49Z date_updated: 2022-01-06T06:54:25Z department: - _id: '157' doi: 10.4028/www.scientific.net/kem.767.397 language: - iso: eng page: 397-404 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published status: public title: Numerical Investigation of the Tool Load in Joining by Forming of Dissimilar Materials Using Shear-Clinching Technology type: journal_article user_id: '36544' year: '2018' ... --- _id: '20281' abstract: - lang: eng text: 'The newly developed joining-by-forming technology “shear-clinching”, features a potentially single-stage process for joining UHSS without requiring any additional elements. Foundational studies have focused on the functionality of shear-clinching at a one-element sample. To ensure the safety of the industrial application of the shear-clinching technology, an investigation with component-like samples with several joints is required. This paper presents a detailed analysis of the material behaviour during the shear-clinching process with multi-element specimens to evaluate the influence of the neighbouring joints. In order to describe the influence of the neighbouring joints, the deformations resulting from the bending and material displacement are recorded without contact after the joining process: locally around the joining point and globally over the entire sample size. To minimize such bending effects, a tool-sided adaptation is provided. The results show the high potential of shear-clinching joining by UHSS and give further recommendations for future multi-material application.' article_type: original author: - first_name: Daxin full_name: Han, Daxin id: '36544' last_name: Han - first_name: Réjane full_name: Hörhold, Réjane last_name: Hörhold - first_name: Martin full_name: Müller, Martin last_name: Müller - first_name: Sebastian full_name: Wiesenmayer, Sebastian last_name: Wiesenmayer - first_name: Marion full_name: Merklein, Marion last_name: Merklein - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Han D, Hörhold R, Müller M, Wiesenmayer S, Merklein M, Meschut G. Shear-Clinching of Multi-Element Specimens of Aluminium Alloy and Ultra-High-Strength Steel. Key Engineering Materials. Published online 2018:389-396. doi:10.4028/www.scientific.net/kem.767.389 apa: Han, D., Hörhold, R., Müller, M., Wiesenmayer, S., Merklein, M., & Meschut, G. (2018). Shear-Clinching of Multi-Element Specimens of Aluminium Alloy and Ultra-High-Strength Steel. Key Engineering Materials, 389–396. https://doi.org/10.4028/www.scientific.net/kem.767.389 bibtex: '@article{Han_Hörhold_Müller_Wiesenmayer_Merklein_Meschut_2018, title={Shear-Clinching of Multi-Element Specimens of Aluminium Alloy and Ultra-High-Strength Steel}, DOI={10.4028/www.scientific.net/kem.767.389}, journal={Key Engineering Materials}, author={Han, Daxin and Hörhold, Réjane and Müller, Martin and Wiesenmayer, Sebastian and Merklein, Marion and Meschut, Gerson}, year={2018}, pages={389–396} }' chicago: Han, Daxin, Réjane Hörhold, Martin Müller, Sebastian Wiesenmayer, Marion Merklein, and Gerson Meschut. “Shear-Clinching of Multi-Element Specimens of Aluminium Alloy and Ultra-High-Strength Steel.” Key Engineering Materials, 2018, 389–96. https://doi.org/10.4028/www.scientific.net/kem.767.389. ieee: 'D. Han, R. Hörhold, M. Müller, S. Wiesenmayer, M. Merklein, and G. Meschut, “Shear-Clinching of Multi-Element Specimens of Aluminium Alloy and Ultra-High-Strength Steel,” Key Engineering Materials, pp. 389–396, 2018, doi: 10.4028/www.scientific.net/kem.767.389.' mla: Han, Daxin, et al. “Shear-Clinching of Multi-Element Specimens of Aluminium Alloy and Ultra-High-Strength Steel.” Key Engineering Materials, 2018, pp. 389–96, doi:10.4028/www.scientific.net/kem.767.389. short: D. Han, R. Hörhold, M. Müller, S. Wiesenmayer, M. Merklein, G. Meschut, Key Engineering Materials (2018) 389–396. date_created: 2020-11-04T14:28:19Z date_updated: 2023-06-06T14:27:27Z department: - _id: '157' doi: 10.4028/www.scientific.net/kem.767.389 language: - iso: eng page: 389-396 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published status: public title: Shear-Clinching of Multi-Element Specimens of Aluminium Alloy and Ultra-High-Strength Steel type: journal_article user_id: '14931' year: '2018' ... --- _id: '16062' abstract: - lang: eng text: The main objective for an economic and ecological use of raw materials is the achievement of closed raw material cycles. Because of that, not only the manufacturing procedures are important during the development of new materials but also the recycling processes. Within the increased use of lightweight construction in recent years, the application of multi-material or hybrid structures reach high significance for the automotive industry. In this development, especially the carbon fibre reinforced plastics (CFRP) gained its importance. However, currently there are no recycling strategies available for hybrid structures; complete recycling processes for CFRP are still expandable. This work presents methods for separation of hybrid structures made of metal and CFRP, as well as the corresponding process windows and the boundary conditions. The separation is performed by introduction of thermal heat and the behaviour of these bonded compounds is analyzed based on shear tensile tests. The results of these studies are used to develop a complete recycling process for reclamation of hybrid structures. author: - first_name: Swetlana full_name: Schweizer, Swetlana id: '8938' last_name: Schweizer - first_name: Anna full_name: Becker-Staines, Anna last_name: Becker-Staines - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster citation: ama: Schweizer S, Becker-Staines A, Tröster T. Separation of Hybrid Structures for the Reclaim of their Single Components. Key Engineering Materials. 2017:568-575. doi:10.4028/www.scientific.net/kem.742.568 apa: Schweizer, S., Becker-Staines, A., & Tröster, T. (2017). Separation of Hybrid Structures for the Reclaim of their Single Components. Key Engineering Materials, 568–575. https://doi.org/10.4028/www.scientific.net/kem.742.568 bibtex: '@article{Schweizer_Becker-Staines_Tröster_2017, title={Separation of Hybrid Structures for the Reclaim of their Single Components}, DOI={10.4028/www.scientific.net/kem.742.568}, journal={Key Engineering Materials}, author={Schweizer, Swetlana and Becker-Staines, Anna and Tröster, Thomas}, year={2017}, pages={568–575} }' chicago: Schweizer, Swetlana, Anna Becker-Staines, and Thomas Tröster. “Separation of Hybrid Structures for the Reclaim of Their Single Components.” Key Engineering Materials, 2017, 568–75. https://doi.org/10.4028/www.scientific.net/kem.742.568. ieee: S. Schweizer, A. Becker-Staines, and T. Tröster, “Separation of Hybrid Structures for the Reclaim of their Single Components,” Key Engineering Materials, pp. 568–575, 2017. mla: Schweizer, Swetlana, et al. “Separation of Hybrid Structures for the Reclaim of Their Single Components.” Key Engineering Materials, 2017, pp. 568–75, doi:10.4028/www.scientific.net/kem.742.568. short: S. Schweizer, A. Becker-Staines, T. Tröster, Key Engineering Materials (2017) 568–575. date_created: 2020-02-24T16:32:21Z date_updated: 2022-01-06T06:52:42Z department: - _id: '9' - _id: '321' - _id: '149' doi: 10.4028/www.scientific.net/kem.742.568 language: - iso: eng page: 568-575 publication: Key Engineering Materials publication_identifier: issn: - 1662-9795 publication_status: published status: public title: Separation of Hybrid Structures for the Reclaim of their Single Components type: journal_article user_id: '72008' year: '2017' ...