@article{20842,
author = {{Wu, Tao and Tinkloh, Steffen Rainer and Tröster, Thomas and Zinn, Wolfgang and Niendorf, Thomas}},
issn = {{2504-477X}},
journal = {{Journal of Composites Science}},
title = {{{Determination and Validation of Residual Stresses in CFRP/Metal Hybrid Components Using the Incremental Hole Drilling Method}}},
doi = {{10.3390/jcs4030143}},
year = {{2020}},
}
@inproceedings{24247,
author = {{Moritzer, Elmar and Hillemeyer, Johannes}},
booktitle = {{73rd Annual Assembly of International Institute of Welding (IIW) and International Conference}},
title = {{{Material Specific Predicting of the Optimal Joining Parameters for the Screw Blind Rivet Joining Process}}},
year = {{2020}},
}
@inproceedings{27417,
author = {{Chalicheemalapalli Jayasankar, Deviprasad and Stallmeister, Tim and Wang, Zheng and Tröster, Thomas}},
booktitle = {{Hybrid 2020 Materials and Structures}},
editor = {{Hausmann, Joachim M and Siebert, Marc and von Hehl, Axel and Weidenmann, Kay André}},
location = {{Digital}},
pages = {{167--172}},
title = {{{MANUFACTURING OF HYBRID COMPONENTS BY VARTM-PROCESS USING NEW SEALING TECHNIQUE DEVELOPED}}},
year = {{2020}},
}
@phdthesis{37585,
abstract = {{Die additive Fertigung gewinnt zunehmend Bedeutung für die Herstellung finaler Bauteile. Ein Anwendungsgebiet liegt dabei in der Herstellung dentaler Restaurationen, bei denen die Metallgerüste für Kronen und Brücken mittels Laser-Strahlschmelzen hergestellt werden. Aufgrund des schichtweisen Aufbaus und der direkten digitalen Fertigung eignet sich die additive Fertigung in besonderem Maße für die Herstellung dieser Bauteile mit individueller Geometrie. Allerdings fehlt der Nachweis, dass die geforderte Teilequalität reproduzierbar erreicht wird. Im Rahmen der vorliegenden Arbeit wird ein Konzept zur Qualitätssicherung erarbeitet, das ein standardisiertes Prüfverfahren zum Nachweis der Maschinenqualifikation für den beschriebenen Anwendungsfall beinhaltet. Dazu werden Qualitätsanforderungen ermittelt und mit dem Stand der Technik abgeglichen. Basierend darauf erfolgen Untersuchungen zur Korrelation zwischen mechanischen und physikalischen Materialkennwerten, wofür durch Variation der Fertigungsparameter gezielt Bauteile mit unterschiedlicher Porosität erzeugt werden. In der Folge wird die Porosität als Prüfgröße festgelegt. Ausgehend von den definierten Qualitätsanforderungen und den Versuchsergebnissen wird ein Verfahren zum Nachweis der Maschinenqualifikation basierend auf der Berechnung des potenziellen Maschinenleistungsindexes erarbeitet und exemplarisch für das verwendete Fertigungssystem angewendet. Abschließend werden Ansätze zur Weiterentwicklung des Verfahrens sowie für weiterführende Forschungsthemen dargestellt.}},
author = {{Huxol, Andrea}},
isbn = {{978-3-8440-7358-4}},
keywords = {{Laser-Strahlschmelzen, Prozessfähigkeit}},
pages = {{232}},
publisher = {{Shaker Verlag}},
title = {{{Beitrag zur Qualitätssicherung in der additiven Fertigung individueller Produkte aus CoCr-Legierungen}}},
volume = {{2020,42}},
year = {{2020}},
}
@article{24374,
author = {{Caylak, Ismail and Penner, Eduard and Mahnken, Rolf}},
issn = {{0045-7825}},
journal = {{Computer Methods in Applied Mechanics and Engineering}},
title = {{{Mean-field and full-field homogenization with polymorphic uncertain geometry and material parameters}}},
doi = {{10.1016/j.cma.2020.113439}},
year = {{2020}},
}
@inbook{24479,
author = {{Moritzer, Elmar and Hüttner, M. and Henning, Bernd and Webersen, Manuel}},
booktitle = {{Advances in Polymer Processing 2020}},
title = {{{The Influence of Hydrothermal Aging on the Material Properties of Continuous Fiber-Reinforced Thermoplastics and its Non-Destructive Characterization}}},
doi = {{10.1007/978-3-662-60809-8_16}},
year = {{2020}},
}
@article{15945,
author = {{Tinkloh, Steffen Rainer and Wu, Tao and Tröster, Thomas and Niendorf, Thomas}},
issn = {{0263-8223}},
journal = {{Composite Structures}},
title = {{{A micromechanical-based finite element simulation of process-induced residual stresses in metal-CFRP-hybrid structures}}},
doi = {{10.1016/j.compstruct.2020.111926}},
volume = {{238}},
year = {{2020}},
}
@inproceedings{42892,
abstract = {{This paper presents the results of static short-term and long-term tensile tests for beta-nucleated joined polypropylene samples by the hot plate welding process. In the present study different dimensionless joining displacements are accounted for. The results show that high short-term tensile strength does not directly transfer to high long-term tensile strength. The morphology of the weld seam in the joined samples is examined by means of transmitted and reflected light microscopy. For the dimensionless joining displacements of 0.75 and 0.95, stretched spherulites are obtained. X-Ray diffraction can be used as a tool for qualitative and quantitative analysis and eventually for differentiation of samples of various joining displacements.}},
author = {{Wübbeke, Andrea and Schöppner, Volker and Paul, André and Tiemann, Michael and Austermeier, Laura and Fitze, Marcus and Chen, Mingie and Jakob, Fabian and Heim, Hans-Peter and Wu, Tao and Niendorf, Thomas and Röhricht, Marie-Luise and Schmidt, Michael}},
booktitle = {{SPE ANTEC 2020: The Virtual Edition 5 }},
title = {{{Long- and Short-Term Tensile Strength and Morphology of Joined Beta-Nucleated Polypropylene Parts}}},
year = {{2020}},
}
@inproceedings{24245,
author = {{Schöppner, Volker and Wübbeke, Andrea and Geißler, B. and Schmidt, M. and Maginer, A. and Wu, T. and Niendorf, T. and Jakob, F. and Heim, H.}},
booktitle = {{73rd Annual Assembly of the International Institute of Welding (IIW)}},
location = {{Marina Bay (Singapore)}},
publisher = {{Springer-Verlag}},
title = {{{Investigation of residual stresses of hot plate welding}}},
year = {{2020}},
}
@article{24236,
abstract = {{In diesem Artikel werden das Scherzugverhalten und der morphologische Zustand von konturgeschweißtem Polypropylen (PP) mit einem Massenanteil von 0,2% Ruß untersucht. Dabei zeigen die Ergebnisse ...}},
author = {{Schöppner, Volker and Wübbeke, Andrea and Schriegel, Fabian and Paul, Andrej and Tiemann, Michael and Geißler, Bastian and Schmidt, Michael and Magnier, Arnaud and Niendorf, Thomas }},
journal = {{Joining Plastics}},
pages = {{30--35}},
title = {{{Selected Aspects for the Assessment of Laser Transmission Welding}}},
year = {{2020}},
}
@inproceedings{24472,
author = {{Schöppner, Volker and Wübbeke, Andrea and Paul, A. and Tiemann, M. and Austermeier, Laura and Fitze, M. and Chen, M. and Jakob, F. and Heim, H.-P- and Wu, T. and Niendorf, T. and Röhricht, M.-L. and Schmidt, M.}},
booktitle = {{ANTEC20}},
location = {{Texas (USA)}},
title = {{{LONG- AND SHORT-TERM TENSILE STRENGTH AND MORPHOLOGY OF JOINED BETA-NUCLEATED POLYPROPYLENE PARTS}}},
year = {{2020}},
}
@article{23797,
abstract = {{Abstract
Safety-relevant components in automobiles require materials that combine high strength with sufficient residual ductility and high-energy absorption. A graded thermo-mechanical treatment of the press-hardening steel 22MnB5 with graded microstructure can provide a material with such properties. Different austenitization temperatures, cooling and forming conditions within a sheet part lead to the development of microstructures with mixed phase compositions. To determine the resulting phase contents in such graded processed parts, a large number of dilatometric tests are usually required. With a non-contact characterization method, it is possible to detect local phase transformations on an inhomogeneously treated flat steel specimen. For press-hardening steel after heat treatment and thermo-mechanical processing, correlations between austenitization temperature, hot deformation strain, microstructure, and hardness are established.}},
author = {{Reitz, Alexander and Grydin, Olexandr and Schaper, Mirko}},
issn = {{1073-5623}},
journal = {{Metallurgical and Materials Transactions A}},
pages = {{5628--5638}},
publisher = {{Springer}},
title = {{{Characterization of Phase Transformations During Graded Thermo-Mechanical Processing of Press-Hardening Sheet Steel 22MnB5}}},
doi = {{10.1007/s11661-020-05976-x}},
year = {{2020}},
}
@article{23899,
author = {{Grydin, Olexandr and Matzelt, Manuel and Andreiev, Anatolii and Frolov, Yaroslav and Schaper, Mirko}},
issn = {{1438-1656}},
journal = {{Advanced Engineering Materials}},
title = {{{Influence of Microstructure in Near‐Surface Areas of Feedstocks on the Bond Strength of Roll Bonded Aluminum Clads}}},
doi = {{10.1002/adem.202000130}},
year = {{2020}},
}
@article{23896,
author = {{Andreiev, Anatolii and Hoyer, Kay-Peter and Grydin, Olexandr and Frolov, Yaroslaw and Schaper, Mirko}},
issn = {{0933-5137}},
journal = {{Materialwissenschaft und Werkstofftechnik}},
pages = {{517--530}},
title = {{{Degradable silver‐based alloys}}},
doi = {{10.1002/mawe.201900191}},
year = {{2020}},
}
@article{58383,
author = {{Basavapoornima, Ch. and Maheswari, T. and Chalicheemalapalli Jayasankar, Deviprasad and Kesavulu, C.R. and Tröster, Thomas and Jayasankar, C.K.}},
issn = {{0022-3093}},
journal = {{Journal of Non-Crystalline Solids}},
publisher = {{Elsevier BV}},
title = {{{Thermal, structural, mechanical and 1.8 μm luminescence properties of the thulium doped Pb-K-Al-Na glasses for optical fiber amplifiers}}},
doi = {{10.1016/j.jnoncrysol.2019.119773}},
volume = {{530}},
year = {{2020}},
}
@misc{52431,
author = {{Schlüter, Alexander and M. Garbuzova-Schlifter, Maria and Fecher, Florian}},
title = {{{Digital Innovation at a Large Energy Enterprise. Talk}}},
year = {{2020}},
}
@misc{52432,
author = {{Schlüter, Alexander}},
title = {{{Intrapreneuers vs Start-ups - who really creates Innovations? Panel discussion}}},
year = {{2020}},
}
@misc{52433,
author = {{Schlüter, Alexander}},
title = {{{Digitalizing the Planning of our Grids. Talk}}},
year = {{2020}},
}
@article{62237,
author = {{Vieth, P. and Voigt, Markus and Ebbert, Christoph and Milkereit, B. and Zhuravlev, E. and Yang, B. and Keßler, O. and Grundmeier, Guido}},
issn = {{2212-8271}},
journal = {{Procedia CIRP}},
pages = {{17--20}},
publisher = {{Elsevier BV}},
title = {{{Surface inoculation of aluminium powders for additive manufacturing of Al-7075 alloys}}},
doi = {{10.1016/j.procir.2020.09.004}},
volume = {{94}},
year = {{2020}},
}
@article{62777,
abstract = {{The simulation of complex engineering components and structures under loads requires the formulation and adequate calibration of appropriate material models. This work introduces an optimisation-based scheme for the calibration of viscoelastic material models that are coupled to gradient-enhanced damage in a finite strain setting. The parameter identification scheme is applied to a self-diagnostic poly(dimethylsiloxane) (PDMS) elastomer, where so-called mechanophore units are incorporated within the polymeric microstructure. The present contribution, however, focuses on the purely mechanical response of the material, combining experiments with homogeneous and inhomogeneous states of deformation. In effect, the results provided lay the groundwork for a future extension of the proposed parameter identification framework, where additional field-data provided by the self-diagnostic capabilities can be incorporated into the optimisation scheme.}},
author = {{Schulte, Robin and Ostwald, Richard and Menzel, Andreas}},
issn = {{1996-1944}},
journal = {{Materials}},
number = {{14}},
publisher = {{MDPI AG}},
title = {{{Gradient-Enhanced Modelling of Damage for Rate-Dependent Material Behaviour—A Parameter Identification Framework}}},
doi = {{10.3390/ma13143156}},
volume = {{13}},
year = {{2020}},
}