@article{32813,
  author       = {{Martin, Sven and Kurtusic, Kristijan and Tröster, Thomas}},
  journal      = {{Key Engineering Materials}},
  location     = {{Braga}},
  title        = {{{Influence of the Surrounding Sheet Geometry on a Clinched Joint}}},
  doi          = {{  https://doi.org/10.4028/p-09md1c}},
  volume       = {{927}},
  year         = {{2022}},
}

@article{32869,
  abstract     = {{<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>}},
  author       = {{Stallmeister, Tim and Tröster, Thomas}},
  issn         = {{1662-9795}},
  journal      = {{Key Engineering Materials}},
  keywords     = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}},
  pages        = {{1457--1467}},
  publisher    = {{Trans Tech Publications, Ltd.}},
  title        = {{{In-Mold-Assembly of Hybrid Bending Structures by Compression Molding}}},
  doi          = {{10.4028/p-5fxp53}},
  volume       = {{926}},
  year         = {{2022}},
}

@inproceedings{32871,
  author       = {{Triebus, Marcel and Ostermann, Moritz and Tröster, Thomas and Horwath, Ilona}},
  booktitle    = {{Materials in Car Body Engineering - Bad Nauheim}},
  location     = {{Bad Nauheim}},
  title        = {{{Advanced Automotive Components by Fiber-Metal-Laminates}}},
  year         = {{2022}},
}

@article{30510,
  abstract     = {{The corrosion behavior of a hybrid material consisting of intrinsically bonded carbon fiber-reinforced epoxy resin with laser-structured EN AW 6082 metal was investigated. Particular attention was paid to the effects of the laser-structuring, surface topography and the contacting. Pristine and hybridized specimens were corroded in aqueous NaCl electrolyte (0.1 mol/l) using a potentiodynamic polarization technique and subsequently analyzed using computed tomography, scanning electron-, light- and laser scanning microscopy. The results show that the corrosive reaction arises mainly from the aluminum component. Surface pretreatment of the aluminum resulted in increasing corrosion rates, but showed no influence on the hybrids corrosion properties. Optical micrographs suggest that the epoxy resin acts as a sealant preventing galvanic corrosion between the aluminum and carbon fibers by hindering the diffusion of the electrolyte into the joints. While corrosion effects were observed locally at the aluminum surface, they were, contrary to expectations, not enhanced on the hybrid interfaces.}},
  author       = {{Delp, Alexander and Freund, Jonathan and Wu, Shuang and Scholz, Ronja and Löbbecke, Miriam and Haubrich, Jan and Tröster, Thomas and Walther, Frank}},
  issn         = {{0263-8223}},
  journal      = {{Composite Structures}},
  keywords     = {{Civil and Structural Engineering, Ceramics and Composites}},
  publisher    = {{Elsevier BV}},
  title        = {{{Influence of laser-generated surface micro-structuring on the intrinsically bonded hybrid system CFRP-EN AW 6082-T6 on its corrosion properties}}},
  doi          = {{10.1016/j.compstruct.2022.115238}},
  volume       = {{285}},
  year         = {{2022}},
}

@inproceedings{49433,
  author       = {{Kaiser, Maximilian Alexander and Rockicki, Pawel and Höschen, Fabian and Wesendahl, Jan-Niklas and Konrad, Stefan and Meyer, Thomas and Marten, Thorsten and Tröster, Thomas}},
  keywords     = {{Ti-6Al-4V, heat transfer coefficient}},
  location     = {{Orlando}},
  title        = {{{ Heat transfer coefficient investigation for hot die quenching process of Ti-6Al-4V alloy}}},
  year         = {{2022}},
}

@inproceedings{36112,
  author       = {{Pfeifer, Florian and Knorr, Lukas and Schlosser, Florian and Marten, Thorsten and Tröster, Thomas}},
  location     = {{Paphos, Zypern}},
  title        = {{{Ecological and Economical Feasibility of Inductive Heating for Sustainable Press Hardening Processes}}},
  year         = {{2022}},
}

@inproceedings{32875,
  author       = {{Ostermann, Moritz and Behm, Jonathan and Marten, Thorsten and Tröster, Thomas and Weyer, Johannes and Cepera, Kay and Adelt, Fabian}},
  booktitle    = {{14. Wissenschaftsforum Mobilität}},
  location     = {{Duisburg}},
  title        = {{{Individualisierung des ÖPNV - Integration technischer und sozialer Dimensionen nachhaltiger Mobilität}}},
  year         = {{2022}},
}

@inproceedings{28440,
  author       = {{Triebus, Marcel and Reitz, Alexander and Grydin, Olexandr and Grenz, Julian and Schneidt, Andreas and Erhardt, Rüdiger and Tröster, Thomas and Schaper, Mirko}},
  booktitle    = {{13th European LS-DYNA Conference 2021}},
  location     = {{Ulm}},
  title        = {{{Forming Simulation of Tailored Press Hardened Parts}}},
  year         = {{2021}},
}

@book{28461,
  author       = {{Tröster, Thomas and Pfeifer, Florian and Nacke, Bernard and Dietrich, André}},
  isbn         = {{978-3-96780-002-9 }},
  publisher    = {{Forschungsvereinigung Stahlanwendung e.V.}},
  title        = {{{Großserientaugliche induktive Platinenerwärmung für den Warmformprozess}}},
  volume       = {{P1038}},
  year         = {{2021}},
}

@inproceedings{21442,
  author       = {{Tinkloh, Steffen Rainer and Wu, Tao and Tröster, Thomas and Niendorf, Thomas}},
  keywords     = {{Micromechanics, Fast Fourier Transform (FFT), Reduced Order Modelling, Homogenization}},
  title        = {{{Development of a submodel technique for FFT-based solvers in micromechanical analysis}}},
  year         = {{2021}},
}

@inproceedings{20857,
  author       = {{Camberg, Alan Adam and Tröster, Thomas and Latuske, Clemens}},
  location     = {{Wolfsburg}},
  publisher    = {{Springer}},
  title        = {{{Development of a hybrid crash-relevant car body component with load-adapted thickness properties: Design, manufacturing and testing}}},
  doi          = {{https://doi.org/10.1007/978-3-662-62924-6_28}},
  year         = {{2021}},
}

@inproceedings{20858,
  author       = {{Camberg, Alan Adam and Tröster, Thomas and Wingenbach, Nils and Hielscher, Christian  and Grenz, Julian}},
  location     = {{Wolfsburg}},
  publisher    = {{Springer}},
  title        = {{{A new numerical method for potential anaylsis and design of hybrid components from full vehicle simulations: Implementation and component design}}},
  doi          = {{https://doi.org/10.1007/978-3-662-62924-6_30}},
  year         = {{2021}},
}

@article{22518,
  author       = {{Triebus, Marcel and Gierse, Jan and Marten, Thorsten and Tröster, Thomas}},
  issn         = {{1757-8981}},
  journal      = {{IOP Conference Series: Materials Science and Engineering}},
  location     = {{Virtual - Stuttgart}},
  publisher    = {{IOP Publishing Ltd}},
  title        = {{{A new Device for Determination of Forming-Limit-Curves under Hot-Forming Conditions}}},
  doi          = {{10.1088/1757-899x/1157/1/012052}},
  year         = {{2021}},
}

@techreport{29807,
  author       = {{Linnig, Caterina and Tröster, Thomas}},
  publisher    = {{Deutsche Bundesstiftung Umwelt (DBU)}},
  title        = {{{Entwicklung eines neuartigen Reinigungsverfahrens für recycelte Kohlenstofffasern}}},
  year         = {{2021}},
}

@article{24131,
  abstract     = {{<jats:p>Glass/carbon fiber reinforced plastic (GFRP/CFRP) and hybrid components have attracted increasing attention in lightweight applications. However, residual stresses induced in the manufacturing process of these components can result in warpage and, eventually, negatively affect the mechanical performance of the composite structures. In the present work, GFRP, CFRP, GFRP/steel and CFRP/steel hybrid components were manufactured through the prepreg-press-technology always employing the same process parameters. The residual stresses of these components were measured through the hole drilling method (HDM), based on an adequate formalism to evaluate the residual stresses for orthotropic materials including the calculation of the calibration coefficients via finite element analysis (FEA). In FEA, the real material lay-up and mechanical properties of the samples were considered. The warpage induced by residual stresses was measured after the samples were removed from the tool. The measured residual stresses and warpage of four different types of samples were compared and results were analyzed in depth. The results obtained can be extended to other hybrid materials and even could be used for designing multi-stable laminates for application in adaptive structures. Moreover, the effects of the drilling process parameters of HDM, e.g., the drilling speed, the drilling increment and the zero-depth setting, on the resulting residual stresses of GFRP were investigated. The reliability of residual stress measurements in GFRP using HDM was validated through mechanical bending tests. The conclusions concerning the choice of optimal drilling parameters for GFRP could be directly applied for other types of samples considered in the present work.</jats:p>}},
  author       = {{Wu, Tao and Tinkloh, Steffen Rainer and Tröster, Thomas and Zinn, Wolfgang and Niendorf, Thomas}},
  issn         = {{2075-4701}},
  journal      = {{Metals}},
  title        = {{{Measurement and Analysis of Residual Stresses and Warpage in Fiber Reinforced Plastic and Hybrid Components}}},
  doi          = {{10.3390/met11020335}},
  year         = {{2021}},
}

@article{21064,
  author       = {{Tinkloh, Steffen Rainer and Wu, Tao and Tröster, Thomas and Niendorf, Thomas}},
  issn         = {{2075-4701}},
  journal      = {{Metals}},
  title        = {{{The Effect of Fiber Waviness on the Residual Stress State and Its Prediction by the Hole Drilling Method in Fiber Metal Laminates: A Global-Local Finite Element Analysis}}},
  doi          = {{10.3390/met11010156}},
  year         = {{2021}},
}

@inproceedings{21726,
  author       = {{Triebus, Marcel and Tröster, Thomas}},
  booktitle    = {{9th NRW Nano Conference - Innovations in Materials and Applications}},
  location     = {{Web}},
  title        = {{{HyOpt - Optimization-Based Development of Hybrid Materials}}},
  year         = {{2021}},
}

@article{33895,
  abstract     = {{<jats:p>Heat-assisted forming processes are becoming increasingly important in the manufacturing of sheet metal parts for body-in-white applications. However, the non-isothermal nature of these processes leads to challenges in evaluating the forming limits, since established methods such as Forming Limit Curves (FLCs) only allow the assessment of critical forming strains for steady temperatures. For this reason, a temperature-dependent extension of the well-established GISSMO (Generalized Incremental Stress State Dependent Damage Model) fracture indicator framework is developed by the authors to predict forming failures under non-isothermal conditions. In this paper, a general approach to combine several isothermal FLCs within the temperature-extended GISSMO model into a temperature-dependent forming limit surface is investigated. The general capabilities of the model are tested in a coupled thermo-mechanical FEA using the example of warm forming of an AA5182-O sheet metal cross-die cup. The obtained results are then compared with state of the art of evaluation methods. By taking the strain and temperature path into account, GISSMO predicts greater drawing depths by up to 20% than established methods. In this way the forming and so the lightweight potential of sheet metal parts can by fully exploited. Moreover, the risk and locus of failure can be evaluated directly on the part geometry by a contour plot. An additional advantage of the GISSMO model is the applicability for low triaxialities as well as the possibility to predict the materials behavior beyond necking up to ductile fracture.</jats:p>}},
  author       = {{Camberg, Alan Adam and Erhart, Tobias and Tröster, Thomas}},
  issn         = {{1996-1944}},
  journal      = {{Materials}},
  keywords     = {{General Materials Science}},
  number       = {{17}},
  publisher    = {{MDPI AG}},
  title        = {{{A Generalized Stress State and Temperature Dependent Damage Indicator Framework for Ductile Failure Prediction in Heat-Assisted Forming Operations}}},
  doi          = {{10.3390/ma14175106}},
  volume       = {{14}},
  year         = {{2021}},
}

@inproceedings{26994,
  author       = {{Stallmeister, Tim and Martin, Sven and Marten, Thorsten and Tröster, Thomas}},
  location     = {{Bad Nauheim}},
  title        = {{{Experimental investigation on lightweight potentials of fiber-metal-laminates for automotive battery cases}}},
  year         = {{2021}},
}

@article{24009,
  abstract     = {{<jats:p>Heat-assisted forming processes are becoming increasingly important in the manufacturing of sheet metal parts for body-in-white applications. However, the non-isothermal nature of these processes leads to challenges in evaluating the forming limits, since established methods such as Forming Limit Curves (FLCs) only allow the assessment of critical forming strains for steady temperatures. For this reason, a temperature-dependent extension of the well-established GISSMO (Generalized Incremental Stress State Dependent Damage Model) fracture indicator framework is developed by the authors to predict forming failures under non-isothermal conditions. In this paper, a general approach to combine several isothermal FLCs within the temperature-extended GISSMO model into a temperature-dependent forming limit surface is investigated. The general capabilities of the model are tested in a coupled thermo-mechanical FEA using the example of warm forming of an AA5182-O sheet metal cross-die cup. The obtained results are then compared with state of the art of evaluation methods. By taking the strain and temperature path into account, GISSMO predicts greater drawing depths by up to 20% than established methods. In this way the forming and so the lightweight potential of sheet metal parts can by fully exploited. Moreover, the risk and locus of failure can be evaluated directly on the part geometry by a contour plot. An additional advantage of the GISSMO model is the applicability for low triaxialities as well as the possibility to predict the materials behavior beyond necking up to ductile fracture.</jats:p>}},
  author       = {{Camberg, Alan Adam and Erhart, Tobias and Tröster, Thomas}},
  issn         = {{1996-1944}},
  journal      = {{Materials}},
  title        = {{{A Generalized Stress State and Temperature Dependent Damage Indicator Framework for Ductile Failure Prediction in Heat-Assisted Forming Operations}}},
  doi          = {{10.3390/ma14175106}},
  year         = {{2021}},
}