@inproceedings{16054, author = {{Weiß-Borkowski, Nathalie and Horwath, Ilona and Berscheid, A. and Dohmeier-Fischer, Silvia and Tröster, Thomas}}, booktitle = {{INTED2018 Proceedings}}, isbn = {{9788469794807}}, title = {{{NEW APPROACHES IN LIGHTWEIGHT DESIGN: V-MODEL OF LIGHTWEIGHT DESIGN BY COMPOSITES AS AN APPROACH OF INTER- AND TRANSDISCIPLINARY RESEARCH}}}, doi = {{10.21125/inted.2018.1298}}, year = {{2018}}, } @inproceedings{16035, author = {{Striewe, Jan André and Grothe, R. and Kowatz, Jannik and Tröster, Thomas and Grundmeier, Guido and Meschut, Gerson}}, location = {{Athen}}, title = {{{Design and Testing of Co-Cured Bonded CFRP-Steel Hybrids with Nanostructured Interfaces for Interlaminar Fracture Toughness}}}, year = {{2018}}, } @inproceedings{16050, author = {{Camberg, Alan Adam and Tröster, Thomas and Heggemann, Thomas and Homberg, H. and Schaper, Mirko and Dietrich, J. and Bremser, Wolfgang and Achterberg, L. and Kabst, M. and Wille, M. and Peckhaus, Volker}}, location = {{Dortmund}}, title = {{{LHYBS – Lightweight Design by Novel Hybrid Materials}}}, year = {{2018}}, } @inproceedings{16055, author = {{Zinn, C. and Wang, Z. and Tröster, Thomas and Schaper, Mirko}}, location = {{Bremen}}, title = {{{Forming and corrosion stability of a laser pre-treated metal surface-influence on the properties of metal-CFRP hybrid structures made by VARTM}}}, year = {{2018}}, } @article{15958, author = {{Zinn, Carolin and Bobbert, Mathias and Dammann, Christian and Wang, Zheng and Tröster, Thomas and Mahnken, Rolf and Meschut, Gerson and Schaper, Mirko}}, issn = {{1359-8368}}, journal = {{Composites Part B: Engineering}}, pages = {{173--185}}, title = {{{Shear strength and failure behaviour of laser nano-structured and conventionally pre-treated interfaces in intrinsically manufactured CFRP-steel hybrids}}}, doi = {{10.1016/j.compositesb.2018.05.030}}, year = {{2018}}, } @article{59979, abstract = {{Currently, it is state of the art to use precipitation hardening 6000-series aluminum alloys to manufacture high-strength aluminum automotive parts by extrusion or in a cold forming process. Alternatively, it is also possible to produce such parts by the use of non-precipitation hardening 5000-series aluminum alloys in a work-hardened condition. Therefore, BENTELER Automobiltechnik GmbH developed a special sheet forming process, henceforth referred to as "flash forming process". The application of the flash forming process, consisting of a rapid heat treatment and a subsequent cold die stamping, increases the forming capability of the work-hardened 5000-series aluminum sheets and results in high-strength parts with a very good ductility and weldability. In addition, this thermal assisted forming process allows a cost-saving production of such high-strength aluminum parts due to lower material costs of 5000-series aluminum alloys than those of a 6000-series material. Furthermore, the weight-saving effects of "flash formed" parts can be higher compared to extruded or cold formed 6000-series aluminum alloys. The suitability of the process is evaluated by forming a commercial AW-5182 H18 aluminum sheet to a crash-relevant automotive part. However, to accurately simulate the flash forming process itself, a temperature dependent fracture model is necessary. Investigations on a coupon basis also showed that the effect of adiabatic heating due to plastic work cannot be neglected. In cooperation with Paderborn University, a detailed mechanical testing, aided by digital image correlation (DIC) and thermal imaging, is carried out to characterize the yield, hardening and fracture behavior at elevated temperatures. The experimental tests are followed by the calibration of a FLD and an incremental stress state dependent fracture model in LS-DYNA. Finally, the simulation models are validated on a cross die deep drawn cup.}}, author = {{Camberg, A A and Bohner, F and Tölle, J and Schneidt, A and Meiners, S and Tröster, Thomas}}, issn = {{1757-899X}}, journal = {{IOP Conference Series: Materials Science and Engineering}}, publisher = {{IOP Publishing}}, title = {{{Formability enhancement of EN AW-5182 H18 aluminum alloy sheet metal parts in a flash forming process: testing, calibration and evaluation of fracture models}}}, doi = {{10.1088/1757-899x/418/1/012018}}, volume = {{418}}, year = {{2018}}, } @inproceedings{16048, author = {{Ahlers, Dominik and Tröster, Thomas and Hermann, S. and Koppa, P. and Gloetter, P. and Schaper, Mirko and Peters, M. and Burns, M. and Hengsbach, Florian and Altmann, A.}}, booktitle = {{Contributed Papers from MS&T17}}, isbn = {{9780873397667}}, title = {{{Selective Laser Melting of Ti6Al4V with High Build Rates and Following Hot Isostatic Pressing}}}, doi = {{10.7449/2018mst/2018/mst_2018_117_124}}, year = {{2018}}, } @inproceedings{15960, author = {{Weiß-Borkowski, Nathalie and Lian, Junhe and Camberg, Alan Adam and Tröster, Thomas and Münstermann, Sebastian and Bleck, Wolfgang and Gese, Helmut and Richter, Helmut}}, title = {{{Forming limit curves of DP600 determined in high-speed Nakajima tests and predicted by two different strain-rate-sensitive models}}}, doi = {{10.1063/1.5035024}}, year = {{2018}}, } @article{41525, author = {{Hengsbach, Florian and Koppa, Peter and Holzweissig, Martin Joachim and Aydinöz, Mehmet Esat and Taube, Alexander and Hoyer, Kay-Peter and Starykov, Oleksiy and Tonn, Babette and Niendorf, Thomas and Tröster, Thomas and Schaper, Mirko}}, issn = {{2363-9512}}, journal = {{Progress in Additive Manufacturing}}, keywords = {{Industrial and Manufacturing Engineering}}, number = {{4}}, pages = {{221--231}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Inline additively manufactured functionally graded multi-materials: microstructural and mechanical characterization of 316L parts with H13 layers}}}, doi = {{10.1007/s40964-018-0044-4}}, volume = {{3}}, year = {{2018}}, } @article{24104, author = {{Hengsbach, Florian and Koppa, Peter and Holzweissig, Martin Joachim and Aydinöz, Mehmet Esat and Taube, Alexander and Hoyer, Kay-Peter and Starykov, Oleksiy and Tonn, Babette and Niendorf, Thomas and Tröster, Thomas and Schaper, Mirko}}, issn = {{2363-9512}}, journal = {{Progress in Additive Manufacturing}}, pages = {{221--231}}, title = {{{Inline additively manufactured functionally graded multi-materials: microstructural and mechanical characterization of 316L parts with H13 layers}}}, doi = {{10.1007/s40964-018-0044-4}}, year = {{2018}}, } @article{15957, author = {{Hengsbach, Florian and Koppa, Peter and Holzweissig, Martin Joachim and Aydinöz, Mehmet Esat and Taube, Alexander and Hoyer, Kay-Peter and Starykov, Oleksiy and Tonn, Babette and Niendorf, Thomas and Tröster, Thomas and Schaper, Mirko}}, issn = {{2363-9512}}, journal = {{Progress in Additive Manufacturing}}, pages = {{221--231}}, title = {{{Inline additively manufactured functionally graded multi-materials: microstructural and mechanical characterization of 316L parts with H13 layers}}}, doi = {{10.1007/s40964-018-0044-4}}, year = {{2018}}, } @inproceedings{6559, author = {{Claes, Leander and Zeipert, Henning and Koppa, Peter and Tröster, Thomas and Henning, Bernd}}, booktitle = {{Proceedings of Meetings on Acoustics}}, pages = {{030004}}, title = {{{Additively manufactured acoustic diffuser structures for ultrasonic measurement applications}}}, doi = {{10.1121/2.0000688}}, year = {{2017}}, } @inproceedings{16791, author = {{Dietrich, André and Nacke, Bernard and Pfeifer, Florian and Marten, Thorsten and Tröster, Thomas}}, location = {{Noordwijkerhout/Amsterdam}}, title = {{{Investigation of geometrical discontinuities in blanks for hot sheet metal forming process under the influence of induction heating}}}, year = {{2017}}, } @inproceedings{16792, author = {{Dietrich, André and Nacke, Bernard and Pfeifer, Florian and Marten, Thorsten and Tröster, Thomas}}, location = {{Hannover}}, title = {{{Effects of Holes in Blanks for Press Hardening Process due to Induction Heating}}}, year = {{2017}}, } @article{15941, author = {{Reuter, Corin and Sauerland, Kim-Henning and Tröster, Thomas}}, issn = {{0263-8223}}, journal = {{Composite Structures}}, pages = {{33--44}}, title = {{{Experimental and numerical crushing analysis of circular CFRP tubes under axial impact loading}}}, doi = {{10.1016/j.compstruct.2017.04.052}}, year = {{2017}}, } @article{15942, author = {{Reuter, Corin and Tröster, Thomas}}, issn = {{0263-8231}}, journal = {{Thin-Walled Structures}}, pages = {{1--9}}, title = {{{Crashworthiness and numerical simulation of hybrid aluminium-CFRP tubes under axial impact}}}, doi = {{10.1016/j.tws.2017.03.034}}, volume = {{117}}, year = {{2017}}, } @article{15944, author = {{Striewe, Jan André and Reuter, Corin and Sauerland, Kim-Henning and Tröster, Thomas}}, issn = {{0263-8231}}, journal = {{Thin-Walled Structures}}, pages = {{501--508}}, title = {{{Manufacturing and crashworthiness of fabric-reinforced thermoplastic composites}}}, doi = {{10.1016/j.tws.2017.11.011}}, year = {{2017}}, } @inproceedings{16059, author = {{Weiß-Borkowski, Nathalie and Lian, Juhne and Marten, Thorsten and Tröster, Thomas and Münstermann, Sebastian and Bleck, Wolfgang}}, booktitle = {{Proceedings of The 20th International ESAFORM Conference on Material Forming: ESAFORM 2017}}, title = {{{Forming limit curves determined in high-speed Nakajima tests and predicted by a strain rate sensitive model}}}, doi = {{10.1063/1.5007961}}, year = {{2017}}, } @article{16062, abstract = {{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 = {{Schweizer, Swetlana and Becker-Staines, Anna and Tröster, Thomas}}, issn = {{1662-9795}}, journal = {{Key Engineering Materials}}, pages = {{568--575}}, title = {{{Separation of Hybrid Structures for the Reclaim of their Single Components}}}, doi = {{10.4028/www.scientific.net/kem.742.568}}, year = {{2017}}, } @inproceedings{16063, author = {{Ahlers, Dominik and Tröster, Thomas}}, location = {{Austin, Texas, USA}}, title = {{{Approve of porostiy for increasing process speed in the laser melting process of Ti6Al4V}}}, year = {{2017}}, }