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Tribo-functional PVD thin films deposited onto additively manufactured Ti6Al7Nb for biomedical applications. <i>Materials Letters</i>, <i>321</i>, Article 132384. <a href=\"https://doi.org/10.1016/j.matlet.2022.132384\">https://doi.org/10.1016/j.matlet.2022.132384</a>","bibtex":"@article{Tillmann_Lopes Dias_Kokalj_Stangier_Hein_Hoyer_Schaper_Gödecke_Oltmanns_Meißner_2022, title={Tribo-functional PVD thin films deposited onto additively manufactured Ti6Al7Nb for biomedical applications}, volume={321}, DOI={<a href=\"https://doi.org/10.1016/j.matlet.2022.132384\">10.1016/j.matlet.2022.132384</a>}, number={132384}, journal={Materials Letters}, publisher={Elsevier BV}, author={Tillmann, Wolfgang and Lopes Dias, Nelson Filipe and Kokalj, David and Stangier, Dominic and Hein, Maxwell and Hoyer, Kay-Peter and Schaper, Mirko and Gödecke, Daria and Oltmanns, Hilke and Meißner, Jessica}, year={2022} }","mla":"Tillmann, Wolfgang, et al. “Tribo-Functional PVD Thin Films Deposited onto Additively Manufactured Ti6Al7Nb for Biomedical Applications.” <i>Materials Letters</i>, vol. 321, 132384, Elsevier BV, 2022, doi:<a href=\"https://doi.org/10.1016/j.matlet.2022.132384\">10.1016/j.matlet.2022.132384</a>.","short":"W. 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Additively manufactured novel Ti6Al7Nb circular honeycomb cellular solid for energy absorbing applications. <i>Materials Science and Engineering: A</i>, <i>854</i>, Article 143887. <a href=\"https://doi.org/10.1016/j.msea.2022.143887\">https://doi.org/10.1016/j.msea.2022.143887</a>","mla":"Pramanik, Sudipta, et al. “Additively Manufactured Novel Ti6Al7Nb Circular Honeycomb Cellular Solid for Energy Absorbing Applications.” <i>Materials Science and Engineering: A</i>, vol. 854, 143887, Elsevier BV, 2022, doi:<a href=\"https://doi.org/10.1016/j.msea.2022.143887\">10.1016/j.msea.2022.143887</a>.","short":"S. Pramanik, D. Milaege, K.-P. Hoyer, M. Schaper, Materials Science and Engineering: A 854 (2022).","bibtex":"@article{Pramanik_Milaege_Hoyer_Schaper_2022, title={Additively manufactured novel Ti6Al7Nb circular honeycomb cellular solid for energy absorbing applications}, volume={854}, DOI={<a href=\"https://doi.org/10.1016/j.msea.2022.143887\">10.1016/j.msea.2022.143887</a>}, number={143887}, journal={Materials Science and Engineering: A}, publisher={Elsevier BV}, author={Pramanik, Sudipta and Milaege, Dennis and Hoyer, Kay-Peter and Schaper, Mirko}, year={2022} }"},"year":"2022","department":[{"_id":"9"},{"_id":"158"}],"user_id":"48411","_id":"41491","language":[{"iso":"eng"}],"keyword":["Mechanical Engineering","Mechanics of Materials","Condensed Matter Physics","General Materials Science"],"article_number":"143887","publication":"Materials Science and Engineering: A","type":"journal_article","status":"public"},{"author":[{"first_name":"Sudipta","last_name":"Pramanik","full_name":"Pramanik, Sudipta"},{"full_name":"Milaege, Dennis","last_name":"Milaege","first_name":"Dennis"},{"full_name":"Hoyer, Kay-Peter","last_name":"Hoyer","first_name":"Kay-Peter"},{"last_name":"Schaper","full_name":"Schaper, Mirko","first_name":"Mirko"}],"date_created":"2023-02-02T14:22:59Z","volume":12,"publisher":"MDPI AG","date_updated":"2023-04-27T16:48:04Z","doi":"10.3390/cryst12091217","title":"Additively Manufactured Nested and Non-Nested Cellular Solids for Effective Stress Distribution and Thermal Insulation Applications: An Experimental and Finite Element Analysis Study","issue":"9","publication_status":"published","publication_identifier":{"issn":["2073-4352"]},"citation":{"short":"S. Pramanik, D. Milaege, K.-P. Hoyer, M. Schaper, Crystals 12 (2022).","bibtex":"@article{Pramanik_Milaege_Hoyer_Schaper_2022, title={Additively Manufactured Nested and Non-Nested Cellular Solids for Effective Stress Distribution and Thermal Insulation Applications: An Experimental and Finite Element Analysis Study}, volume={12}, DOI={<a href=\"https://doi.org/10.3390/cryst12091217\">10.3390/cryst12091217</a>}, number={91217}, journal={Crystals}, publisher={MDPI AG}, author={Pramanik, Sudipta and Milaege, Dennis and Hoyer, Kay-Peter and Schaper, Mirko}, year={2022} }","mla":"Pramanik, Sudipta, et al. “Additively Manufactured Nested and Non-Nested Cellular Solids for Effective Stress Distribution and Thermal Insulation Applications: An Experimental and Finite Element Analysis Study.” <i>Crystals</i>, vol. 12, no. 9, 1217, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/cryst12091217\">10.3390/cryst12091217</a>.","apa":"Pramanik, S., Milaege, D., Hoyer, K.-P., &#38; Schaper, M. (2022). Additively Manufactured Nested and Non-Nested Cellular Solids for Effective Stress Distribution and Thermal Insulation Applications: An Experimental and Finite Element Analysis Study. <i>Crystals</i>, <i>12</i>(9), Article 1217. <a href=\"https://doi.org/10.3390/cryst12091217\">https://doi.org/10.3390/cryst12091217</a>","chicago":"Pramanik, Sudipta, Dennis Milaege, Kay-Peter Hoyer, and Mirko Schaper. “Additively Manufactured Nested and Non-Nested Cellular Solids for Effective Stress Distribution and Thermal Insulation Applications: An Experimental and Finite Element Analysis Study.” <i>Crystals</i> 12, no. 9 (2022). <a href=\"https://doi.org/10.3390/cryst12091217\">https://doi.org/10.3390/cryst12091217</a>.","ieee":"S. Pramanik, D. Milaege, K.-P. Hoyer, and M. Schaper, “Additively Manufactured Nested and Non-Nested Cellular Solids for Effective Stress Distribution and Thermal Insulation Applications: An Experimental and Finite Element Analysis Study,” <i>Crystals</i>, vol. 12, no. 9, Art. no. 1217, 2022, doi: <a href=\"https://doi.org/10.3390/cryst12091217\">10.3390/cryst12091217</a>.","ama":"Pramanik S, Milaege D, Hoyer K-P, Schaper M. Additively Manufactured Nested and Non-Nested Cellular Solids for Effective Stress Distribution and Thermal Insulation Applications: An Experimental and Finite Element Analysis Study. <i>Crystals</i>. 2022;12(9). doi:<a href=\"https://doi.org/10.3390/cryst12091217\">10.3390/cryst12091217</a>"},"intvolume":"        12","year":"2022","user_id":"48411","department":[{"_id":"9"},{"_id":"158"}],"_id":"41489","language":[{"iso":"eng"}],"article_number":"1217","keyword":["Inorganic Chemistry","Condensed Matter Physics","General Materials Science","General Chemical Engineering"],"type":"journal_article","publication":"Crystals","status":"public","abstract":[{"text":"<jats:p>In this study, the design, additive manufacturing and experimental as well as simulation investigation of mechanical and thermal properties of cellular solids are addressed. For this, two cellular solids having nested and non-nested structures are designed and additively manufactured via laser powder bed fusion. The primary objective is to design cellular solids which absorb a significant amount of energy upon impact loading without transmitting a high amount of stress into the cellular solids. Therefore, compression testing of the two cellular solids is performed. The nested and non-nested cellular solids show similar energy absorption properties; however, the nested cellular solid transmits a lower amount of stress in the cellular structure compared to the non-nested cellular solid. The experimentally measured strain (by DIC) in the interior region of the nested cellular solid is lower despite a higher value of externally imposed compressive strain. The second objective of this study is to determine the thermal insulation properties of cellular solids. For measuring the thermal insulation properties, the samples are placed on a hot plate; and the surface temperature distribution is measured by an infrared camera. The thermal insulating performance of both cellular types is sufficient for temperatures exceeding 100 °C. However, the thermal insulating performance of a non-nested cellular solid is slightly better than that of the nested cellular solid. Additional thermal simulations predict a relatively higher temperature distribution on the cellular solid surfaces compared to experimental results. The simulated residual stress shows a similar distribution for both types, but the magnitude of residual stress is different for the cellular solids upon cooling from different temperatures of the hot plate.</jats:p>","lang":"eng"}]},{"intvolume":"        15","citation":{"apa":"Abdelaal, O., Hengsbach, F., Schaper, M., &#38; Hoyer, K.-P. (2022). LPBF Manufactured Functionally Graded Lattice Structures Obtained by Graded Density and Hybrid Poisson’s Ratio. <i>Materials</i>, <i>15</i>(12), Article 4072. <a href=\"https://doi.org/10.3390/ma15124072\">https://doi.org/10.3390/ma15124072</a>","short":"O. Abdelaal, F. Hengsbach, M. Schaper, K.-P. Hoyer, Materials 15 (2022).","bibtex":"@article{Abdelaal_Hengsbach_Schaper_Hoyer_2022, title={LPBF Manufactured Functionally Graded Lattice Structures Obtained by Graded Density and Hybrid Poisson’s Ratio}, volume={15}, DOI={<a href=\"https://doi.org/10.3390/ma15124072\">10.3390/ma15124072</a>}, number={124072}, journal={Materials}, publisher={MDPI AG}, author={Abdelaal, Osama and Hengsbach, Florian and Schaper, Mirko and Hoyer, Kay-Peter}, year={2022} }","mla":"Abdelaal, Osama, et al. “LPBF Manufactured Functionally Graded Lattice Structures Obtained by Graded Density and Hybrid Poisson’s Ratio.” <i>Materials</i>, vol. 15, no. 12, 4072, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/ma15124072\">10.3390/ma15124072</a>.","ama":"Abdelaal O, Hengsbach F, Schaper M, Hoyer K-P. LPBF Manufactured Functionally Graded Lattice Structures Obtained by Graded Density and Hybrid Poisson’s Ratio. <i>Materials</i>. 2022;15(12). doi:<a href=\"https://doi.org/10.3390/ma15124072\">10.3390/ma15124072</a>","chicago":"Abdelaal, Osama, Florian Hengsbach, Mirko Schaper, and Kay-Peter Hoyer. “LPBF Manufactured Functionally Graded Lattice Structures Obtained by Graded Density and Hybrid Poisson’s Ratio.” <i>Materials</i> 15, no. 12 (2022). <a href=\"https://doi.org/10.3390/ma15124072\">https://doi.org/10.3390/ma15124072</a>.","ieee":"O. Abdelaal, F. Hengsbach, M. Schaper, and K.-P. Hoyer, “LPBF Manufactured Functionally Graded Lattice Structures Obtained by Graded Density and Hybrid Poisson’s Ratio,” <i>Materials</i>, vol. 15, no. 12, Art. no. 4072, 2022, doi: <a href=\"https://doi.org/10.3390/ma15124072\">10.3390/ma15124072</a>."},"year":"2022","issue":"12","publication_identifier":{"issn":["1996-1944"]},"publication_status":"published","doi":"10.3390/ma15124072","title":"LPBF Manufactured Functionally Graded Lattice Structures Obtained by Graded Density and Hybrid Poisson’s Ratio","volume":15,"author":[{"first_name":"Osama","last_name":"Abdelaal","full_name":"Abdelaal, Osama"},{"first_name":"Florian","last_name":"Hengsbach","full_name":"Hengsbach, Florian"},{"full_name":"Schaper, Mirko","last_name":"Schaper","first_name":"Mirko"},{"first_name":"Kay-Peter","last_name":"Hoyer","full_name":"Hoyer, Kay-Peter"}],"date_created":"2023-02-02T14:19:59Z","publisher":"MDPI AG","date_updated":"2023-04-27T16:48:14Z","status":"public","abstract":[{"text":"<jats:p>The additive manufacturing (AM) of innovative lattice structures with unique mechanical properties has received widespread attention due to the capability of AM processes to fabricate freeform and intricate structures. The most common way to characterize the additively manufactured lattice structures is via the uniaxial compression test. However, although there are many applications for which lattice structures are designed for bending (e.g., sandwich panels cores and some medical implants), limited attention has been paid toward investigating the flexural behavior of metallic AM lattice structures with tunable internal architectures. The purpose of this study was to experimentally investigate the flexural behavior of AM Ti-6Al-4V lattice structures with graded density and hybrid Poisson’s ratio (PR). Four configurations of lattice structure beams with positive, negative, hybrid PR, and a novel hybrid PR with graded density were manufactured via the laser powder bed fusion (LPBF) AM process and tested under four-point bending. The manufacturability, microstructure, micro-hardness, and flexural properties of the lattices were evaluated. During the bending tests, different failure mechanisms were observed, which were highly dependent on the type of lattice geometry. The best response in terms of absorbed energy was obtained for the functionally graded hybrid PR (FGHPR) structure. Both the FGHPR and hybrid PR (HPR) structured showed a 78.7% and 62.9% increase in the absorbed energy, respectively, compared to the positive PR (PPR) structure. This highlights the great potential for FGHPR lattices to be used in protective devices, load-bearing medical implants, and energy-absorbing applications.</jats:p>","lang":"eng"}],"publication":"Materials","type":"journal_article","language":[{"iso":"eng"}],"keyword":["General Materials Science"],"article_number":"4072","department":[{"_id":"9"},{"_id":"158"}],"user_id":"48411","_id":"41488"},{"article_number":"107235","keyword":["Industrial and Manufacturing Engineering","Mechanical Engineering","Mechanics of Materials","General Materials Science","Modeling and Simulation"],"language":[{"iso":"eng"}],"_id":"41490","user_id":"48411","department":[{"_id":"9"},{"_id":"158"}],"status":"public","type":"journal_article","publication":"International Journal of Fatigue","title":"On the influence of physical vapor deposited thin coatings on the low-cycle fatigue behavior of additively processed Ti-6Al-7Nb alloy","doi":"10.1016/j.ijfatigue.2022.107235","date_updated":"2023-04-27T16:48:10Z","publisher":"Elsevier BV","date_created":"2023-02-02T14:23:43Z","author":[{"first_name":"Maxwell","full_name":"Hein, Maxwell","last_name":"Hein"},{"last_name":"Lopes Dias","full_name":"Lopes Dias, Nelson Filipe","first_name":"Nelson Filipe"},{"full_name":"Kokalj, David","last_name":"Kokalj","first_name":"David"},{"first_name":"Dominic","last_name":"Stangier","full_name":"Stangier, Dominic"},{"last_name":"Hoyer","full_name":"Hoyer, Kay-Peter","first_name":"Kay-Peter"},{"first_name":"Wolfgang","full_name":"Tillmann, Wolfgang","last_name":"Tillmann"},{"last_name":"Schaper","full_name":"Schaper, Mirko","first_name":"Mirko"}],"volume":166,"year":"2022","citation":{"ieee":"M. Hein <i>et al.</i>, “On the influence of physical vapor deposited thin coatings on the low-cycle fatigue behavior of additively processed Ti-6Al-7Nb alloy,” <i>International Journal of Fatigue</i>, vol. 166, Art. no. 107235, 2022, doi: <a href=\"https://doi.org/10.1016/j.ijfatigue.2022.107235\">10.1016/j.ijfatigue.2022.107235</a>.","chicago":"Hein, Maxwell, Nelson Filipe Lopes Dias, David Kokalj, Dominic Stangier, Kay-Peter Hoyer, Wolfgang Tillmann, and Mirko Schaper. “On the Influence of Physical Vapor Deposited Thin Coatings on the Low-Cycle Fatigue Behavior of Additively Processed Ti-6Al-7Nb Alloy.” <i>International Journal of Fatigue</i> 166 (2022). <a href=\"https://doi.org/10.1016/j.ijfatigue.2022.107235\">https://doi.org/10.1016/j.ijfatigue.2022.107235</a>.","ama":"Hein M, Lopes Dias NF, Kokalj D, et al. On the influence of physical vapor deposited thin coatings on the low-cycle fatigue behavior of additively processed Ti-6Al-7Nb alloy. <i>International Journal of Fatigue</i>. 2022;166. doi:<a href=\"https://doi.org/10.1016/j.ijfatigue.2022.107235\">10.1016/j.ijfatigue.2022.107235</a>","bibtex":"@article{Hein_Lopes Dias_Kokalj_Stangier_Hoyer_Tillmann_Schaper_2022, title={On the influence of physical vapor deposited thin coatings on the low-cycle fatigue behavior of additively processed Ti-6Al-7Nb alloy}, volume={166}, DOI={<a href=\"https://doi.org/10.1016/j.ijfatigue.2022.107235\">10.1016/j.ijfatigue.2022.107235</a>}, number={107235}, journal={International Journal of Fatigue}, publisher={Elsevier BV}, author={Hein, Maxwell and Lopes Dias, Nelson Filipe and Kokalj, David and Stangier, Dominic and Hoyer, Kay-Peter and Tillmann, Wolfgang and Schaper, Mirko}, year={2022} }","mla":"Hein, Maxwell, et al. “On the Influence of Physical Vapor Deposited Thin Coatings on the Low-Cycle Fatigue Behavior of Additively Processed Ti-6Al-7Nb Alloy.” <i>International Journal of Fatigue</i>, vol. 166, 107235, Elsevier BV, 2022, doi:<a href=\"https://doi.org/10.1016/j.ijfatigue.2022.107235\">10.1016/j.ijfatigue.2022.107235</a>.","short":"M. Hein, N.F. Lopes Dias, D. Kokalj, D. Stangier, K.-P. Hoyer, W. Tillmann, M. Schaper, International Journal of Fatigue 166 (2022).","apa":"Hein, M., Lopes Dias, N. F., Kokalj, D., Stangier, D., Hoyer, K.-P., Tillmann, W., &#38; Schaper, M. (2022). On the influence of physical vapor deposited thin coatings on the low-cycle fatigue behavior of additively processed Ti-6Al-7Nb alloy. <i>International Journal of Fatigue</i>, <i>166</i>, Article 107235. <a href=\"https://doi.org/10.1016/j.ijfatigue.2022.107235\">https://doi.org/10.1016/j.ijfatigue.2022.107235</a>"},"intvolume":"       166","publication_status":"published","publication_identifier":{"issn":["0142-1123"]}},{"article_number":"146442072210742","keyword":["Mechanical Engineering","General Materials Science"],"language":[{"iso":"eng"}],"_id":"30736","user_id":"23175","department":[{"_id":"157"}],"abstract":[{"lang":"eng","text":"In this study, an innovative friction model is used to improve the quality of clinching process simulations. Consequently, the future over dimensioning can be reduced. Furthermore, the improved prediction quality of the joining process simulation leads to an improvement in the simulation of load-bearing capacity as well. In this way, the entire sampling process can be performed virtually without any experimental investigations. This will contribute to the advancement of lightweight construction in the automotive industry. In this work, the frictional behavior is studied in dependence on the local joining process parameters. As a reference for the numerical investigations, clinch joints by means of a die with fixed geometry are joined. Additionally, a hardness mapping is performed on the microsection of the clinch joints. It shows the local strain hardening, which correlates with the forming degree in the simulation. Based on the occurring contacts and the local joining process parameters in the joining process simulation, the test matrix for the experimental friction tests is defined. The friction tests are carried out on a compression-torsion-tribometer. This type of tribometer is able to apply high interface pressures above the initial yield stress due to the specimen encapsulation. Besides, the pure joining part contact, the contact between the joining part and joining tool can be tested as well. The experimental test setup offers the possibility to evaluate the influences of temperature, relative velocity, interface pressure, and frictional stroke independently. Based on the results of the experimental friction tests, a friction model is created. The resulting friction model is integrated into the numerical joining process simulation via a subroutine. To validate the quality of the new friction modeling, the results of simulations are compared with the experiments in terms of load-stroke diagrams, joint geometry, and hardness mappings on the microsection. </jats:p>"}],"status":"public","type":"journal_article","publication":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","title":"Increasing the accuracy of clinching process simulations by modeling the friction as a function of local joining process parameters","doi":"10.1177/14644207221074290","publisher":"SAGE Publications","date_updated":"2023-04-28T09:13:12Z","date_created":"2022-04-04T10:10:49Z","author":[{"first_name":"Moritz Sebastian","last_name":"Rossel","id":"44503","full_name":"Rossel, Moritz Sebastian"},{"last_name":"Meschut","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson","id":"32056","first_name":"Gerson"}],"year":"2022","citation":{"bibtex":"@article{Rossel_Meschut_2022, title={Increasing the accuracy of clinching process simulations by modeling the friction as a function of local joining process parameters}, DOI={<a href=\"https://doi.org/10.1177/14644207221074290\">10.1177/14644207221074290</a>}, number={146442072210742}, journal={Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}, publisher={SAGE Publications}, author={Rossel, Moritz Sebastian and Meschut, Gerson}, year={2022} }","short":"M.S. Rossel, G. Meschut, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022).","mla":"Rossel, Moritz Sebastian, and Gerson Meschut. “Increasing the Accuracy of Clinching Process Simulations by Modeling the Friction as a Function of Local Joining Process Parameters.” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, 146442072210742, SAGE Publications, 2022, doi:<a href=\"https://doi.org/10.1177/14644207221074290\">10.1177/14644207221074290</a>.","apa":"Rossel, M. S., &#38; Meschut, G. (2022). Increasing the accuracy of clinching process simulations by modeling the friction as a function of local joining process parameters. <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, Article 146442072210742. <a href=\"https://doi.org/10.1177/14644207221074290\">https://doi.org/10.1177/14644207221074290</a>","chicago":"Rossel, Moritz Sebastian, and Gerson Meschut. “Increasing the Accuracy of Clinching Process Simulations by Modeling the Friction as a Function of Local Joining Process Parameters.” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, 2022. <a href=\"https://doi.org/10.1177/14644207221074290\">https://doi.org/10.1177/14644207221074290</a>.","ieee":"M. S. Rossel and G. Meschut, “Increasing the accuracy of clinching process simulations by modeling the friction as a function of local joining process parameters,” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, Art. no. 146442072210742, 2022, doi: <a href=\"https://doi.org/10.1177/14644207221074290\">10.1177/14644207221074290</a>.","ama":"Rossel MS, Meschut G. Increasing the accuracy of clinching process simulations by modeling the friction as a function of local joining process parameters. <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>. Published online 2022. doi:<a href=\"https://doi.org/10.1177/14644207221074290\">10.1177/14644207221074290</a>"},"publication_status":"published","quality_controlled":"1","publication_identifier":{"issn":["1464-4207","2041-3076"]}},{"publication_status":"published","quality_controlled":"1","publication_identifier":{"issn":["1464-4207","2041-3076"]},"year":"2022","citation":{"ama":"Bielak CR, Böhnke M, Bobbert M, Meschut G. Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process. <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>. Published online 2022. doi:<a href=\"https://doi.org/10.1177/14644207221093468\">10.1177/14644207221093468</a>","ieee":"C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process,” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, Art. no. 146442072210934, 2022, doi: <a href=\"https://doi.org/10.1177/14644207221093468\">10.1177/14644207221093468</a>.","chicago":"Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut. “Numerical Investigation of a Friction  Test to Determine the Friction  Coefficients for the Clinching Process.” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, 2022. <a href=\"https://doi.org/10.1177/14644207221093468\">https://doi.org/10.1177/14644207221093468</a>.","apa":"Bielak, C. R., Böhnke, M., Bobbert, M., &#38; Meschut, G. (2022). Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process. <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, Article 146442072210934. <a href=\"https://doi.org/10.1177/14644207221093468\">https://doi.org/10.1177/14644207221093468</a>","short":"C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022).","bibtex":"@article{Bielak_Böhnke_Bobbert_Meschut_2022, title={Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process}, DOI={<a href=\"https://doi.org/10.1177/14644207221093468\">10.1177/14644207221093468</a>}, number={146442072210934}, journal={Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}, publisher={SAGE Publications}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson}, year={2022} }","mla":"Bielak, Christian Roman, et al. “Numerical Investigation of a Friction  Test to Determine the Friction  Coefficients for the Clinching Process.” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, 146442072210934, SAGE Publications, 2022, doi:<a href=\"https://doi.org/10.1177/14644207221093468\">10.1177/14644207221093468</a>."},"date_updated":"2023-04-28T11:31:35Z","publisher":"SAGE Publications","date_created":"2022-04-27T08:58:11Z","author":[{"id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak","first_name":"Christian Roman"},{"first_name":"Max","last_name":"Böhnke","id":"45779","full_name":"Böhnke, Max"},{"last_name":"Bobbert","id":"7850","full_name":"Bobbert, Mathias","first_name":"Mathias"},{"orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056","full_name":"Meschut, Gerson","first_name":"Gerson"}],"title":"Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process","doi":"10.1177/14644207221093468","type":"journal_article","publication":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","abstract":[{"text":"<jats:p> Clinching as a mechanical joining process has become established in many areas of car body. In order to predict relevant properties of clinched joints and to ensure the reliability of the process, it is numerically simulated during the product development process. The prediction accuracy of the simulated process depends on the implemented friction model. Therefore, a new method for determining friction coefficients in sheet metal materials was developed and tested. The aim of this study is the numerical investigation of this experimental method by means of FE simulation. The experimental setup is modelled in a 3D numerical simulation taking into account the process parameters varying in the experiment, such as geometric properties, contact pressure and contact velocity. Furthermore, the contact description of the model is calibrated via the experimentally determined friction coefficients according to clinch-relevant parameter space. It is shown that the assumptions made in the determination of the experimental data in preliminary work are valid. In addition, it is investigated to what extent the standard Coulomb friction model in the FEM can reproduce the results of the experimental method. </jats:p>","lang":"eng"}],"status":"public","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"}],"_id":"30962","user_id":"34782","department":[{"_id":"157"},{"_id":"630"}],"article_number":"146442072210934","keyword":["Mechanical Engineering","General Materials Science"],"language":[{"iso":"eng"}]},{"citation":{"ieee":"B. Schramm <i>et al.</i>, “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase,” <i>Journal of Advanced Joining Processes</i>, vol. 6, Art. no. 100133, 2022, doi: <a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">10.1016/j.jajp.2022.100133</a>.","chicago":"Schramm, Britta, Sven Martin, Christian Steinfelder, Christian Roman Bielak, Alexander Brosius, Gerson Meschut, Thomas Tröster, Thomas Wallmersperger, and Julia Mergheim. “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase.” <i>Journal of Advanced Joining Processes</i> 6 (2022). <a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">https://doi.org/10.1016/j.jajp.2022.100133</a>.","ama":"Schramm B, Martin S, Steinfelder C, et al. A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase. <i>Journal of Advanced Joining Processes</i>. 2022;6. doi:<a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">10.1016/j.jajp.2022.100133</a>","short":"B. Schramm, S. Martin, C. Steinfelder, C.R. Bielak, A. Brosius, G. Meschut, T. Tröster, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes 6 (2022).","bibtex":"@article{Schramm_Martin_Steinfelder_Bielak_Brosius_Meschut_Tröster_Wallmersperger_Mergheim_2022, title={A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase}, volume={6}, DOI={<a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">10.1016/j.jajp.2022.100133</a>}, number={100133}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Schramm, Britta and Martin, Sven and Steinfelder, Christian and Bielak, Christian Roman and Brosius, Alexander and Meschut, Gerson and Tröster, Thomas and Wallmersperger, Thomas and Mergheim, Julia}, year={2022} }","mla":"Schramm, Britta, et al. “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase.” <i>Journal of Advanced Joining Processes</i>, vol. 6, 100133, Elsevier BV, 2022, doi:<a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">10.1016/j.jajp.2022.100133</a>.","apa":"Schramm, B., Martin, S., Steinfelder, C., Bielak, C. R., Brosius, A., Meschut, G., Tröster, T., Wallmersperger, T., &#38; Mergheim, J. (2022). A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase. <i>Journal of Advanced Joining Processes</i>, <i>6</i>, Article 100133. <a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">https://doi.org/10.1016/j.jajp.2022.100133</a>"},"intvolume":"         6","publication_status":"published","publication_identifier":{"issn":["2666-3309"]},"doi":"10.1016/j.jajp.2022.100133","author":[{"first_name":"Britta","last_name":"Schramm","full_name":"Schramm, Britta","id":"4668"},{"id":"38177","full_name":"Martin, Sven","last_name":"Martin","first_name":"Sven"},{"first_name":"Christian","full_name":"Steinfelder, Christian","last_name":"Steinfelder"},{"first_name":"Christian Roman","last_name":"Bielak","full_name":"Bielak, Christian Roman","id":"34782"},{"full_name":"Brosius, Alexander","last_name":"Brosius","first_name":"Alexander"},{"first_name":"Gerson","full_name":"Meschut, Gerson","id":"32056","orcid":"0000-0002-2763-1246","last_name":"Meschut"},{"first_name":"Thomas","id":"553","full_name":"Tröster, Thomas","last_name":"Tröster"},{"full_name":"Wallmersperger, Thomas","last_name":"Wallmersperger","first_name":"Thomas"},{"full_name":"Mergheim, Julia","last_name":"Mergheim","first_name":"Julia"}],"volume":6,"date_updated":"2023-04-28T11:30:38Z","status":"public","type":"journal_article","article_number":"100133","user_id":"34782","department":[{"_id":"143"},{"_id":"157"}],"project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"_id":"143","name":"TRR 285 – B04: TRR 285 - Subproject B04"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"},{"name":"TRR 285 – B03: TRR 285 - Subproject B03","_id":"142"},{"_id":"139","name":"TRR 285 – A05: TRR 285 - Subproject A05"}],"_id":"34069","year":"2022","quality_controlled":"1","title":"A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase","date_created":"2022-11-14T08:53:49Z","publisher":"Elsevier BV","publication":"Journal of Advanced Joining Processes","language":[{"iso":"eng"}],"keyword":["Mechanical Engineering","Mechanics of Materials","Engineering (miscellaneous)","Chemical Engineering (miscellaneous)"]},{"status":"public","type":"journal_article","publication":"Journal of Advanced Joining Processes","language":[{"iso":"eng"}],"article_number":"100134","keyword":["Mechanical Engineering","Mechanics of Materials","Engineering (miscellaneous)","Chemical Engineering (miscellaneous)"],"user_id":"34782","department":[{"_id":"143"},{"_id":"157"}],"project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 – B04: TRR 285 - Subproject B04","_id":"143"},{"_id":"139","name":"TRR 285 – A05: TRR 285 - Subproject A05"},{"_id":"137","name":"TRR 285 – A03: TRR 285 - Subproject A03"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"},{"name":"TRR 285 – B03: TRR 285 - Subproject B03","_id":"142"}],"_id":"34068","citation":{"chicago":"Schramm, Britta, Johannes Friedlein, Benjamin Gröger, Christian Roman Bielak, Mathias Bobbert, Maik Gude, Gerson Meschut, Thomas Wallmersperger, and Julia Mergheim. “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process.” <i>Journal of Advanced Joining Processes</i>, 2022. <a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">https://doi.org/10.1016/j.jajp.2022.100134</a>.","ieee":"B. Schramm <i>et al.</i>, “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process,” <i>Journal of Advanced Joining Processes</i>, Art. no. 100134, 2022, doi: <a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">10.1016/j.jajp.2022.100134</a>.","ama":"Schramm B, Friedlein J, Gröger B, et al. A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process. <i>Journal of Advanced Joining Processes</i>. Published online 2022. doi:<a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">10.1016/j.jajp.2022.100134</a>","apa":"Schramm, B., Friedlein, J., Gröger, B., Bielak, C. R., Bobbert, M., Gude, M., Meschut, G., Wallmersperger, T., &#38; Mergheim, J. (2022). A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process. <i>Journal of Advanced Joining Processes</i>, Article 100134. <a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">https://doi.org/10.1016/j.jajp.2022.100134</a>","bibtex":"@article{Schramm_Friedlein_Gröger_Bielak_Bobbert_Gude_Meschut_Wallmersperger_Mergheim_2022, title={A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process}, DOI={<a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">10.1016/j.jajp.2022.100134</a>}, number={100134}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Schramm, Britta and Friedlein, Johannes and Gröger, Benjamin and Bielak, Christian Roman and Bobbert, Mathias and Gude, Maik and Meschut, Gerson and Wallmersperger, Thomas and Mergheim, Julia}, year={2022} }","short":"B. Schramm, J. Friedlein, B. Gröger, C.R. Bielak, M. Bobbert, M. Gude, G. Meschut, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes (2022).","mla":"Schramm, Britta, et al. “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process.” <i>Journal of Advanced Joining Processes</i>, 100134, Elsevier BV, 2022, doi:<a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">10.1016/j.jajp.2022.100134</a>."},"year":"2022","publication_status":"published","quality_controlled":"1","publication_identifier":{"issn":["2666-3309"]},"doi":"10.1016/j.jajp.2022.100134","title":"A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process","author":[{"first_name":"Britta","full_name":"Schramm, Britta","id":"4668","last_name":"Schramm"},{"first_name":"Johannes","last_name":"Friedlein","full_name":"Friedlein, Johannes"},{"first_name":"Benjamin","full_name":"Gröger, Benjamin","last_name":"Gröger"},{"first_name":"Christian Roman","last_name":"Bielak","id":"34782","full_name":"Bielak, Christian Roman"},{"first_name":"Mathias","full_name":"Bobbert, Mathias","id":"7850","last_name":"Bobbert"},{"first_name":"Maik","last_name":"Gude","full_name":"Gude, Maik"},{"last_name":"Meschut","orcid":"0000-0002-2763-1246","id":"32056","full_name":"Meschut, Gerson","first_name":"Gerson"},{"full_name":"Wallmersperger, Thomas","last_name":"Wallmersperger","first_name":"Thomas"},{"first_name":"Julia","full_name":"Mergheim, Julia","last_name":"Mergheim"}],"date_created":"2022-11-14T08:53:07Z","date_updated":"2023-04-28T11:31:03Z","publisher":"Elsevier BV"},{"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>This paper presents the characterization of the microstructure evolution during flow forming of austenitic stainless steel AISI 304L. Due to plastic deformation of metastable austenitic steel, phase transformation from γ-austenite into α’-martensite occurs. This is initiated by the formation of shear bands as product of the external stresses. By means of coupled microscopic and micromagnetic investigations, a characterization of the microstructure was carried out. In particular, this study shows the distribution of the strain-induced α’-martensite and its influence on material properties like hardness at different depths. The microstructural analyses by means of electron backscattered diffraction (EBSD) technique, evidence a higher amount of α’-martensite (ca. 23 %) close to the outer specimen surface, where the plastic deformation and the direct contact with the forming tool take place. In the middle area (ca. 1.5 mm depth from the outer surface), the portion of transformed α’-martensite drops to 7 % and in the inner surface to 2 %. These results are well correlated with microhardness and micromagnetic measurements at different depths. EBSD and atomic force microscopy (AFM) were used to make a detailed characterization of the topography and degree of deformation of the shear bands. Likewise, the mechanisms of nucleation of α’-martensite were discussed. This research contributes to the development of micromagnetic sensors to monitor the evolution of properties during flow forming. This makes them more suitable for closed-loop property control, which offers possibilities for an application-oriented and more efficient production.</jats:p>"}],"publication":"Practical Metallography","keyword":["Metals and Alloys","Mechanics of Materials","Condensed Matter Physics","Electronic","Optical and Magnetic Materials"],"language":[{"iso":"eng"}],"year":"2022","quality_controlled":"1","issue":"11","title":"Coupled microscopic and micromagnetic depth-specific analysis of plastic deformation and phase transformation of metastable austenitic steel AISI 304L by flow forming","publisher":"Walter de Gruyter GmbH","date_created":"2022-11-04T08:29:21Z","status":"public","type":"journal_article","_id":"34000","user_id":"36287","department":[{"_id":"156"},{"_id":"153"},{"_id":"241"}],"citation":{"short":"J. Rozo Vasquez, H. Kanagarajah, B. Arian, L. Kersting, W. Homberg, A. Trächtler, F. Walther, Practical Metallography 59 (2022) 660–675.","mla":"Rozo Vasquez, Julian, et al. “Coupled Microscopic and Micromagnetic Depth-Specific Analysis of Plastic Deformation and Phase Transformation of Metastable Austenitic Steel AISI 304L by Flow Forming.” <i>Practical Metallography</i>, vol. 59, no. 11, Walter de Gruyter GmbH, 2022, pp. 660–75, doi:<a href=\"https://doi.org/10.1515/pm-2022-0064\">10.1515/pm-2022-0064</a>.","bibtex":"@article{Rozo Vasquez_Kanagarajah_Arian_Kersting_Homberg_Trächtler_Walther_2022, title={Coupled microscopic and micromagnetic depth-specific analysis of plastic deformation and phase transformation of metastable austenitic steel AISI 304L by flow forming}, volume={59}, DOI={<a href=\"https://doi.org/10.1515/pm-2022-0064\">10.1515/pm-2022-0064</a>}, number={11}, journal={Practical Metallography}, publisher={Walter de Gruyter GmbH}, author={Rozo Vasquez, Julian and Kanagarajah, Hanigah and Arian, Bahman and Kersting, Lukas and Homberg, Werner and Trächtler, Ansgar and Walther, Frank}, year={2022}, pages={660–675} }","apa":"Rozo Vasquez, J., Kanagarajah, H., Arian, B., Kersting, L., Homberg, W., Trächtler, A., &#38; Walther, F. (2022). Coupled microscopic and micromagnetic depth-specific analysis of plastic deformation and phase transformation of metastable austenitic steel AISI 304L by flow forming. <i>Practical Metallography</i>, <i>59</i>(11), 660–675. <a href=\"https://doi.org/10.1515/pm-2022-0064\">https://doi.org/10.1515/pm-2022-0064</a>","ama":"Rozo Vasquez J, Kanagarajah H, Arian B, et al. Coupled microscopic and micromagnetic depth-specific analysis of plastic deformation and phase transformation of metastable austenitic steel AISI 304L by flow forming. <i>Practical Metallography</i>. 2022;59(11):660-675. doi:<a href=\"https://doi.org/10.1515/pm-2022-0064\">10.1515/pm-2022-0064</a>","chicago":"Rozo Vasquez, Julian, Hanigah Kanagarajah, Bahman Arian, Lukas Kersting, Werner Homberg, Ansgar Trächtler, and Frank Walther. “Coupled Microscopic and Micromagnetic Depth-Specific Analysis of Plastic Deformation and Phase Transformation of Metastable Austenitic Steel AISI 304L by Flow Forming.” <i>Practical Metallography</i> 59, no. 11 (2022): 660–75. <a href=\"https://doi.org/10.1515/pm-2022-0064\">https://doi.org/10.1515/pm-2022-0064</a>.","ieee":"J. Rozo Vasquez <i>et al.</i>, “Coupled microscopic and micromagnetic depth-specific analysis of plastic deformation and phase transformation of metastable austenitic steel AISI 304L by flow forming,” <i>Practical Metallography</i>, vol. 59, no. 11, pp. 660–675, 2022, doi: <a href=\"https://doi.org/10.1515/pm-2022-0064\">10.1515/pm-2022-0064</a>."},"page":"660-675","intvolume":"        59","publication_status":"published","publication_identifier":{"issn":["2195-8599","0032-678X"]},"doi":"10.1515/pm-2022-0064","date_updated":"2023-05-02T08:19:27Z","author":[{"first_name":"Julian","last_name":"Rozo Vasquez","full_name":"Rozo Vasquez, Julian"},{"full_name":"Kanagarajah, Hanigah","last_name":"Kanagarajah","first_name":"Hanigah"},{"id":"36287","full_name":"Arian, Bahman","last_name":"Arian","first_name":"Bahman"},{"full_name":"Kersting, Lukas","last_name":"Kersting","first_name":"Lukas"},{"first_name":"Werner","last_name":"Homberg","id":"233","full_name":"Homberg, Werner"},{"first_name":"Ansgar","last_name":"Trächtler","full_name":"Trächtler, Ansgar","id":"552"},{"full_name":"Walther, Frank","last_name":"Walther","first_name":"Frank"}],"volume":59},{"status":"public","type":"journal_article","department":[{"_id":"156"},{"_id":"153"},{"_id":"241"}],"user_id":"36287","_id":"33999","intvolume":"       926","page":"862-874","citation":{"short":"L. Kersting, B. Arian, J.R. Vasquez, A. Trächtler, W. Homberg, F. Walther, Key Engineering Materials 926 (2022) 862–874.","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={<a href=\"https://doi.org/10.4028/p-yp2hj3\">10.4028/p-yp2hj3</a>}, 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} }","mla":"Kersting, Lukas, et al. “Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes.” <i>Key Engineering Materials</i>, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 862–74, doi:<a href=\"https://doi.org/10.4028/p-yp2hj3\">10.4028/p-yp2hj3</a>.","apa":"Kersting, L., Arian, B., Vasquez, J. R., Trächtler, A., Homberg, W., &#38; Walther, F. (2022). Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes. <i>Key Engineering Materials</i>, <i>926</i>, 862–874. <a href=\"https://doi.org/10.4028/p-yp2hj3\">https://doi.org/10.4028/p-yp2hj3</a>","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. <i>Key Engineering Materials</i>. 2022;926:862-874. doi:<a href=\"https://doi.org/10.4028/p-yp2hj3\">10.4028/p-yp2hj3</a>","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,” <i>Key Engineering Materials</i>, vol. 926, pp. 862–874, 2022, doi: <a href=\"https://doi.org/10.4028/p-yp2hj3\">10.4028/p-yp2hj3</a>.","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.” <i>Key Engineering Materials</i> 926 (2022): 862–74. <a href=\"https://doi.org/10.4028/p-yp2hj3\">https://doi.org/10.4028/p-yp2hj3</a>."},"publication_identifier":{"issn":["1662-9795"]},"publication_status":"published","doi":"10.4028/p-yp2hj3","volume":926,"author":[{"full_name":"Kersting, Lukas","last_name":"Kersting","first_name":"Lukas"},{"last_name":"Arian","id":"36287","full_name":"Arian, Bahman","first_name":"Bahman"},{"full_name":"Vasquez, Julian Rozo","last_name":"Vasquez","first_name":"Julian Rozo"},{"last_name":"Trächtler","full_name":"Trächtler, Ansgar","id":"552","first_name":"Ansgar"},{"first_name":"Werner","full_name":"Homberg, Werner","id":"233","last_name":"Homberg"},{"first_name":"Frank","last_name":"Walther","full_name":"Walther, Frank"}],"date_updated":"2023-05-02T08:19:13Z","abstract":[{"text":"<jats:p>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.</jats:p>","lang":"eng"}],"publication":"Key Engineering Materials","language":[{"iso":"eng"}],"keyword":["Mechanical Engineering","Mechanics of Materials","General Materials Science"],"year":"2022","quality_controlled":"1","title":"Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes","date_created":"2022-11-04T08:27:33Z","publisher":"Trans Tech Publications, Ltd."},{"title":"In-Mold-Assembly of Hybrid Bending Structures by Compression Molding","publisher":"Trans Tech Publications, Ltd.","date_created":"2022-08-17T07:28:31Z","year":"2022","quality_controlled":"1","keyword":["Mechanical Engineering","Mechanics of Materials","General Materials Science"],"language":[{"iso":"eng"}],"abstract":[{"text":"<jats:p>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.</jats:p>","lang":"eng"}],"publication":"Key Engineering Materials","doi":"10.4028/p-5fxp53","date_updated":"2023-05-03T07:44:40Z","author":[{"full_name":"Stallmeister, Tim","id":"45538","last_name":"Stallmeister","first_name":"Tim"},{"full_name":"Tröster, Thomas","id":"553","last_name":"Tröster","first_name":"Thomas"}],"volume":926,"citation":{"mla":"Stallmeister, Tim, and Thomas Tröster. “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding.” <i>Key Engineering Materials</i>, vol. 926, Trans Tech Publications, Ltd., 2022, pp. 1457–67, doi:<a href=\"https://doi.org/10.4028/p-5fxp53\">10.4028/p-5fxp53</a>.","bibtex":"@article{Stallmeister_Tröster_2022, title={In-Mold-Assembly of Hybrid Bending Structures by Compression Molding}, volume={926}, DOI={<a href=\"https://doi.org/10.4028/p-5fxp53\">10.4028/p-5fxp53</a>}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Stallmeister, Tim and Tröster, Thomas}, year={2022}, pages={1457–1467} }","short":"T. Stallmeister, T. Tröster, Key Engineering Materials 926 (2022) 1457–1467.","apa":"Stallmeister, T., &#38; Tröster, T. (2022). In-Mold-Assembly of Hybrid Bending Structures by Compression Molding. <i>Key Engineering Materials</i>, <i>926</i>, 1457–1467. <a href=\"https://doi.org/10.4028/p-5fxp53\">https://doi.org/10.4028/p-5fxp53</a>","ieee":"T. Stallmeister and T. Tröster, “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding,” <i>Key Engineering Materials</i>, vol. 926, pp. 1457–1467, 2022, doi: <a href=\"https://doi.org/10.4028/p-5fxp53\">10.4028/p-5fxp53</a>.","chicago":"Stallmeister, Tim, and Thomas Tröster. “In-Mold-Assembly of Hybrid Bending Structures by Compression Molding.” <i>Key Engineering Materials</i> 926 (2022): 1457–67. <a href=\"https://doi.org/10.4028/p-5fxp53\">https://doi.org/10.4028/p-5fxp53</a>.","ama":"Stallmeister T, Tröster T. In-Mold-Assembly of Hybrid Bending Structures by Compression Molding. <i>Key Engineering Materials</i>. 2022;926:1457-1467. doi:<a href=\"https://doi.org/10.4028/p-5fxp53\">10.4028/p-5fxp53</a>"},"intvolume":"       926","page":"1457-1467","publication_status":"published","publication_identifier":{"issn":["1662-9795"]},"_id":"32869","user_id":"14931","department":[{"_id":"9"},{"_id":"149"},{"_id":"321"}],"status":"public","type":"journal_article"},{"year":"2022","issue":"4","quality_controlled":"1","title":"Proactive Management of Requirement Changes in the Development of Complex Technical Systems","date_created":"2022-03-08T12:37:42Z","publisher":"MDPI AG","abstract":[{"lang":"eng","text":"<jats:p>Requirement changes and cascading effects of change propagation are major sources of inefficiencies in product development and increase the risk of project failure. Proactive change management of requirement changes yields the potential to handle such changes efficiently. A systematic approach is required for proactive change management to assess and reduce the risk of a requirement change with appropriate effort in industrial application. Within the paper at hand, a novel method for Proactive Management of Requirement Changes (ProMaRC) is presented. It is developed in close collaboration with industry experts and evaluated based on workshops, pilot users’ feedback, three industrial case studies from the automotive industry and five development projects from research. To limit the application effort, an automated approach for dependency analysis based on the machine learning technique BERT and semi-automated assessment of change likelihood and impact using a modified PageRank algorithm is developed. Applying the method, the risks of requirement changes are assessed systematically and reduced by means of proactive change measures. Evaluation shows high performance of dependency analysis and confirms the applicability and usefulness of the method. This contribution opens up the research space of proactive risk management for requirement changes which is currently almost unexploited. It enables more efficient product development.</jats:p>"}],"publication":"Applied Sciences","language":[{"iso":"eng"}],"keyword":["Fluid Flow and Transfer Processes","Computer Science Applications","Process Chemistry and Technology","General Engineering","Instrumentation","General Materials Science"],"intvolume":"        12","citation":{"ama":"Gräßler I, Oleff C, Preuß D. Proactive Management of Requirement Changes in the Development of Complex Technical Systems. <i>Applied Sciences</i>. 2022;12(4). doi:<a href=\"https://doi.org/10.3390/app12041874\">10.3390/app12041874</a>","chicago":"Gräßler, Iris, Christian Oleff, and Daniel Preuß. “Proactive Management of Requirement Changes in the Development of Complex Technical Systems.” <i>Applied Sciences</i> 12, no. 4 (2022). <a href=\"https://doi.org/10.3390/app12041874\">https://doi.org/10.3390/app12041874</a>.","ieee":"I. Gräßler, C. Oleff, and D. Preuß, “Proactive Management of Requirement Changes in the Development of Complex Technical Systems,” <i>Applied Sciences</i>, vol. 12, no. 4, Art. no. 1874, 2022, doi: <a href=\"https://doi.org/10.3390/app12041874\">10.3390/app12041874</a>.","mla":"Gräßler, Iris, et al. “Proactive Management of Requirement Changes in the Development of Complex Technical Systems.” <i>Applied Sciences</i>, vol. 12, no. 4, 1874, MDPI AG, 2022, doi:<a href=\"https://doi.org/10.3390/app12041874\">10.3390/app12041874</a>.","bibtex":"@article{Gräßler_Oleff_Preuß_2022, title={Proactive Management of Requirement Changes in the Development of Complex Technical Systems}, volume={12}, DOI={<a href=\"https://doi.org/10.3390/app12041874\">10.3390/app12041874</a>}, number={41874}, journal={Applied Sciences}, publisher={MDPI AG}, author={Gräßler, Iris and Oleff, Christian and Preuß, Daniel}, year={2022} }","short":"I. Gräßler, C. Oleff, D. Preuß, Applied Sciences 12 (2022).","apa":"Gräßler, I., Oleff, C., &#38; Preuß, D. (2022). Proactive Management of Requirement Changes in the Development of Complex Technical Systems. <i>Applied Sciences</i>, <i>12</i>(4), Article 1874. <a href=\"https://doi.org/10.3390/app12041874\">https://doi.org/10.3390/app12041874</a>"},"publication_identifier":{"issn":["2076-3417"]},"publication_status":"published","doi":"10.3390/app12041874","volume":12,"author":[{"full_name":"Gräßler, Iris","id":"47565","last_name":"Gräßler","orcid":"0000-0001-5765-971X","first_name":"Iris"},{"last_name":"Oleff","orcid":"0000-0002-0983-1850","id":"41188","full_name":"Oleff, Christian","first_name":"Christian"},{"last_name":"Preuß","id":"40253","full_name":"Preuß, Daniel","first_name":"Daniel"}],"date_updated":"2023-05-03T08:40:30Z","status":"public","type":"journal_article","article_number":"1874","department":[{"_id":"152"}],"user_id":"5905","_id":"30213"},{"type":"journal_article","publication":"Macromolecular Symposia","status":"public","_id":"44469","user_id":"3959","department":[{"_id":"150"}],"article_number":"2100397","keyword":["Materials Chemistry","Polymers and Plastics","Organic Chemistry","Condensed Matter Physics"],"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["1022-1360","1521-3900"]},"quality_controlled":"1","issue":"1","year":"2022","citation":{"ieee":"D. Menge and H.-J. Schmid, “Low Temperature Laser Sintering with PA12 and PA6 on a Standard System,” <i>Macromolecular Symposia</i>, vol. 404, no. 1, Art. no. 2100397, 2022, doi: <a href=\"https://doi.org/10.1002/masy.202100397\">10.1002/masy.202100397</a>.","chicago":"Menge, Dennis, and Hans-Joachim Schmid. “Low Temperature Laser Sintering with PA12 and PA6 on a Standard System.” <i>Macromolecular Symposia</i> 404, no. 1 (2022). <a href=\"https://doi.org/10.1002/masy.202100397\">https://doi.org/10.1002/masy.202100397</a>.","ama":"Menge D, Schmid H-J. Low Temperature Laser Sintering with PA12 and PA6 on a Standard System. <i>Macromolecular Symposia</i>. 2022;404(1). doi:<a href=\"https://doi.org/10.1002/masy.202100397\">10.1002/masy.202100397</a>","bibtex":"@article{Menge_Schmid_2022, title={Low Temperature Laser Sintering with PA12 and PA6 on a Standard System}, volume={404}, DOI={<a href=\"https://doi.org/10.1002/masy.202100397\">10.1002/masy.202100397</a>}, number={12100397}, journal={Macromolecular Symposia}, publisher={Wiley}, author={Menge, Dennis and Schmid, Hans-Joachim}, year={2022} }","mla":"Menge, Dennis, and Hans-Joachim Schmid. “Low Temperature Laser Sintering with PA12 and PA6 on a Standard System.” <i>Macromolecular Symposia</i>, vol. 404, no. 1, 2100397, Wiley, 2022, doi:<a href=\"https://doi.org/10.1002/masy.202100397\">10.1002/masy.202100397</a>.","short":"D. Menge, H.-J. Schmid, Macromolecular Symposia 404 (2022).","apa":"Menge, D., &#38; Schmid, H.-J. (2022). Low Temperature Laser Sintering with PA12 and PA6 on a Standard System. <i>Macromolecular Symposia</i>, <i>404</i>(1), Article 2100397. <a href=\"https://doi.org/10.1002/masy.202100397\">https://doi.org/10.1002/masy.202100397</a>"},"intvolume":"       404","publisher":"Wiley","date_updated":"2023-05-04T08:24:10Z","date_created":"2023-05-04T08:21:02Z","author":[{"last_name":"Menge","full_name":"Menge, Dennis","id":"29240","first_name":"Dennis"},{"first_name":"Hans-Joachim","last_name":"Schmid","orcid":"000-0001-8590-1921","full_name":"Schmid, Hans-Joachim","id":"464"}],"volume":404,"title":"Low Temperature Laser Sintering with PA12 and PA6 on a Standard System","doi":"10.1002/masy.202100397"},{"abstract":[{"lang":"eng","text":"Inspired by plant grafting, grafted vortex beams can be formed through grafting two or more helical phase profiles of optical vortex beams. Recently, grafted perfect vortex beams (GPVBs) have attracted much attention due to their unique optical properties and potential applications. However, the current method to generate and manipulate GPVBs requires a complex and bulky optical system, hindering further investigation and limiting its practical applications. Here, a compact metasurface approach for generating and manipulating GPVBs in multiple channels is proposed and demonstrated, which eliminates the need for such a complex optical setup. A single metasurface is utilized to realize various superpositions of GPVBs with different combinations of topological charges in four channels, leading to asymmetric singularity distributions. The positions of singularities in the superimposed beam can be further modulated by introducing an initial phase difference in the metasurface design. The work demonstrates a compact metasurface platform that performs a sophisticated optical task that is very challenging with conventional optics, opening opportunities for the investigation and applications of GPVBs in a wide range of emerging application areas, such as singular optics and quantum science."}],"publication":"Advanced Materials","language":[{"iso":"eng"}],"keyword":["Mechanical Engineering","Mechanics of Materials","General Materials Science"],"year":"2022","issue":"30","quality_controlled":"1","title":"Multichannel Superposition of Grafted Perfect Vortex Beams","date_created":"2022-06-20T11:05:50Z","publisher":"Wiley","status":"public","type":"journal_article","article_number":"2203044","article_type":"original","user_id":"30525","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"_id":"32068","citation":{"ama":"Ahmed H, Intaravanne Y, Ming Y, et al. Multichannel Superposition of Grafted Perfect Vortex Beams. <i>Advanced Materials</i>. 2022;34(30). doi:<a href=\"https://doi.org/10.1002/adma.202203044\">10.1002/adma.202203044</a>","ieee":"H. Ahmed <i>et al.</i>, “Multichannel Superposition of Grafted Perfect Vortex Beams,” <i>Advanced Materials</i>, vol. 34, no. 30, Art. no. 2203044, 2022, doi: <a href=\"https://doi.org/10.1002/adma.202203044\">10.1002/adma.202203044</a>.","chicago":"Ahmed, Hammad, Yuttana Intaravanne, Yang Ming, Muhammad Afnan Ansari, Gerald S. Buller, Thomas Zentgraf, and Xianzhong Chen. “Multichannel Superposition of Grafted Perfect Vortex Beams.” <i>Advanced Materials</i> 34, no. 30 (2022). <a href=\"https://doi.org/10.1002/adma.202203044\">https://doi.org/10.1002/adma.202203044</a>.","mla":"Ahmed, Hammad, et al. “Multichannel Superposition of Grafted Perfect Vortex Beams.” <i>Advanced Materials</i>, vol. 34, no. 30, 2203044, Wiley, 2022, doi:<a href=\"https://doi.org/10.1002/adma.202203044\">10.1002/adma.202203044</a>.","short":"H. Ahmed, Y. Intaravanne, Y. Ming, M.A. Ansari, G.S. Buller, T. Zentgraf, X. Chen, Advanced Materials 34 (2022).","bibtex":"@article{Ahmed_Intaravanne_Ming_Ansari_Buller_Zentgraf_Chen_2022, title={Multichannel Superposition of Grafted Perfect Vortex Beams}, volume={34}, DOI={<a href=\"https://doi.org/10.1002/adma.202203044\">10.1002/adma.202203044</a>}, number={302203044}, journal={Advanced Materials}, publisher={Wiley}, author={Ahmed, Hammad and Intaravanne, Yuttana and Ming, Yang and Ansari, Muhammad Afnan and Buller, Gerald S. and Zentgraf, Thomas and Chen, Xianzhong}, year={2022} }","apa":"Ahmed, H., Intaravanne, Y., Ming, Y., Ansari, M. A., Buller, G. S., Zentgraf, T., &#38; Chen, X. (2022). Multichannel Superposition of Grafted Perfect Vortex Beams. <i>Advanced Materials</i>, <i>34</i>(30), Article 2203044. <a href=\"https://doi.org/10.1002/adma.202203044\">https://doi.org/10.1002/adma.202203044</a>"},"intvolume":"        34","publication_status":"published","publication_identifier":{"issn":["0935-9648","1521-4095"]},"doi":"10.1002/adma.202203044","author":[{"full_name":"Ahmed, Hammad","last_name":"Ahmed","first_name":"Hammad"},{"first_name":"Yuttana","full_name":"Intaravanne, Yuttana","last_name":"Intaravanne"},{"last_name":"Ming","full_name":"Ming, Yang","first_name":"Yang"},{"first_name":"Muhammad Afnan","full_name":"Ansari, Muhammad Afnan","last_name":"Ansari"},{"first_name":"Gerald S.","last_name":"Buller","full_name":"Buller, Gerald S."},{"first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","full_name":"Zentgraf, Thomas","id":"30525"},{"first_name":"Xianzhong","last_name":"Chen","full_name":"Chen, Xianzhong"}],"volume":34,"date_updated":"2023-05-12T11:20:44Z"},{"issue":"35","year":"2022","date_created":"2023-07-11T14:50:45Z","publisher":"Royal Society of Chemistry (RSC)","title":"Rapid preparation of self-supported nickel–iron oxide as a high-performance glucose sensing platform","publication":"Journal of Materials Chemistry C","abstract":[{"lang":"eng","text":"<jats:p>Nickel–iron oxide electrocatalysts prepared <jats:italic>via</jats:italic> a rapid electrodeposition are promising candidates for non-enzymatic glucose sensors.</jats:p>"}],"language":[{"iso":"eng"}],"keyword":["Materials Chemistry","General Chemistry"],"publication_status":"published","publication_identifier":{"issn":["2050-7526","2050-7534"]},"citation":{"apa":"Ni, M., Tan, M., Pan, Y., Zhu, C., &#38; Du, H. (2022). Rapid preparation of self-supported nickel–iron oxide as a high-performance glucose sensing platform. <i>Journal of Materials Chemistry C</i>, <i>10</i>(35), 12883–12891. <a href=\"https://doi.org/10.1039/d2tc03176k\">https://doi.org/10.1039/d2tc03176k</a>","short":"M. Ni, M. Tan, Y. Pan, C. Zhu, H. Du, Journal of Materials Chemistry C 10 (2022) 12883–12891.","mla":"Ni, Ming, et al. “Rapid Preparation of Self-Supported Nickel–Iron Oxide as a High-Performance Glucose Sensing Platform.” <i>Journal of Materials Chemistry C</i>, vol. 10, no. 35, Royal Society of Chemistry (RSC), 2022, pp. 12883–91, doi:<a href=\"https://doi.org/10.1039/d2tc03176k\">10.1039/d2tc03176k</a>.","bibtex":"@article{Ni_Tan_Pan_Zhu_Du_2022, title={Rapid preparation of self-supported nickel–iron oxide as a high-performance glucose sensing platform}, volume={10}, DOI={<a href=\"https://doi.org/10.1039/d2tc03176k\">10.1039/d2tc03176k</a>}, number={35}, journal={Journal of Materials Chemistry C}, publisher={Royal Society of Chemistry (RSC)}, author={Ni, Ming and Tan, Minyuan and Pan, Ying and Zhu, Chuhong and Du, Haiwei}, year={2022}, pages={12883–12891} }","ama":"Ni M, Tan M, Pan Y, Zhu C, Du H. Rapid preparation of self-supported nickel–iron oxide as a high-performance glucose sensing platform. <i>Journal of Materials Chemistry C</i>. 2022;10(35):12883-12891. doi:<a href=\"https://doi.org/10.1039/d2tc03176k\">10.1039/d2tc03176k</a>","chicago":"Ni, Ming, Minyuan Tan, Ying Pan, Chuhong Zhu, and Haiwei Du. “Rapid Preparation of Self-Supported Nickel–Iron Oxide as a High-Performance Glucose Sensing Platform.” <i>Journal of Materials Chemistry C</i> 10, no. 35 (2022): 12883–91. <a href=\"https://doi.org/10.1039/d2tc03176k\">https://doi.org/10.1039/d2tc03176k</a>.","ieee":"M. Ni, M. Tan, Y. Pan, C. Zhu, and H. Du, “Rapid preparation of self-supported nickel–iron oxide as a high-performance glucose sensing platform,” <i>Journal of Materials Chemistry C</i>, vol. 10, no. 35, pp. 12883–12891, 2022, doi: <a href=\"https://doi.org/10.1039/d2tc03176k\">10.1039/d2tc03176k</a>."},"page":"12883-12891","intvolume":"        10","author":[{"full_name":"Ni, Ming","last_name":"Ni","first_name":"Ming"},{"full_name":"Tan, Minyuan","last_name":"Tan","first_name":"Minyuan"},{"first_name":"Ying","last_name":"Pan","full_name":"Pan, Ying","id":"100383"},{"first_name":"Chuhong","full_name":"Zhu, Chuhong","last_name":"Zhu"},{"full_name":"Du, Haiwei","last_name":"Du","first_name":"Haiwei"}],"volume":10,"date_updated":"2023-07-11T16:41:34Z","doi":"10.1039/d2tc03176k","type":"journal_article","status":"public","user_id":"100383","_id":"46012","extern":"1"}]