@article{1703, author = {{Zentgraf, Thomas}}, issn = {{0031-9252}}, journal = {{Physik in unserer Zeit}}, number = {{2}}, pages = {{58--59}}, publisher = {{Wiley-Blackwell}}, title = {{{Hochauflösende Holografie}}}, doi = {{10.1002/piuz.201490026}}, volume = {{45}}, year = {{2014}}, } @article{15966, author = {{Niendorf, Thomas and Leuders, Stefan and Riemer, Andre and Brenne, Florian and Tröster, Thomas and Richard, Hans Albert and Schwarze, Dieter}}, issn = {{1438-1656}}, journal = {{Advanced Engineering Materials}}, pages = {{857--861}}, title = {{{Functionally Graded Alloys Obtained by Additive Manufacturing}}}, doi = {{10.1002/adem.201300579}}, year = {{2014}}, } @article{15967, author = {{Riemer, A. and Leuders, S. and Thöne, M. and Richard, H.A. and Tröster, Thomas and Niendorf, T.}}, issn = {{0013-7944}}, journal = {{Engineering Fracture Mechanics}}, pages = {{15--25}}, title = {{{On the fatigue crack growth behavior in 316L stainless steel manufactured by selective laser melting}}}, doi = {{10.1016/j.engfracmech.2014.03.008}}, year = {{2014}}, } @inproceedings{16097, author = {{Klein, M. and Hülsbusch, D. and Walther, F. and Bartsch, M. and Hausmann, J. and Frantz, M. and Lauter, C. and Tröster, Thomas}}, isbn = {{978-3-88355-402-0}}, location = {{Stade}}, pages = {{188--193}}, title = {{{Characterization of the corrosion influence on the fatigue behavior of intrinsic CFRP-steel-hybrids}}}, year = {{2014}}, } @inproceedings{16099, author = {{Frantz, M and Lauter, Christian and Tröster, Thomas and Hausmann, J. and Bartsch, M. and Hülsbusch, D and Walther, F.}}, isbn = {{978-3-88355-400-6}}, location = {{Stuttgart}}, title = {{{Efficient manufacturing of hybrid structures consisting of steel and CFRP with using residual heat / Effiziente Herstellung von Hybridbauteilen aus Stahl und CFK mithilfe von Restwärmeausnutzung}}}, year = {{2014}}, } @inproceedings{16120, author = {{Block, Holger and Marten, Thorsten and Tröster, Thomas}}, location = {{Braunschweig}}, title = {{{Crash simulation of high strength automotive components using advanced failure models}}}, year = {{2014}}, } @article{16122, author = {{Lauter, Christian and Niewel, Joerg and Tröster, Thomas}}, issn = {{2051-8218}}, journal = {{International Journal of Automotive Composites}}, title = {{{Quasistatic and crash tests of steel-CFRP hybrid pillar structures for automotive applications}}}, doi = {{10.1504/ijautoc.2014.064127}}, year = {{2014}}, } @phdthesis{16127, author = {{Lauter, Christian}}, isbn = {{978-3-8440-2996-3}}, publisher = {{Shaker Verlag}}, title = {{{Entwicklung und Herstellung von Hybridbauteilen aus Metallen und Faserverbundkunststoffen für den Leichtbau im Automobil}}}, volume = {{4}}, year = {{2014}}, } @inproceedings{16128, author = {{Block, Holger and Marten, Thorsten and Weiß Borkowski, Nathalie and Tröster, Thomas}}, location = {{Hohenkammer}}, title = {{{Crash performance of the new press hardenable steel 15MnB6}}}, year = {{2014}}, } @inproceedings{16129, author = {{Reuter, Corin and Flore, Dominik and Pöhler, Simon and Sauerland, Kim Henning and Tröster, Thomas}}, location = {{Leipzig}}, title = {{{Numerical simulation of the energy absorption of fiber-reinforced plastics}}}, year = {{2014}}, } @inproceedings{16255, author = {{Leuders, S. and Riemer, A. and Richard, H. A. and Tröster, Thomas and Niendorf, T.}}, location = {{Erlangen, Germany}}, title = {{{Selective-Laser-Melting materials under cyclic loading: Influence of process-inherent defects on the initiation and propagation of fatigue cracks}}}, year = {{2014}}, } @inproceedings{16256, author = {{Leuders, S. and Tröster, Thomas and Brenne, F. and Riemer, A. and Richard, H. A. and Niendorf, T.}}, location = {{San Francisco, California, USA}}, title = {{{Evaluation of the effect of defects on the mechanical performance of components manufactured by selective laser melting}}}, year = {{2014}}, } @inproceedings{16257, author = {{Leuders, S. and Tröster, Thomas and Riemer, A. and Richard, H. A. and Niendorf, T.}}, location = {{Orlando, Florida, USA}}, title = {{{On the mechanical performance of structures manufactured by selective laser melting: Damage initiation and propagation}}}, year = {{2014}}, } @inproceedings{22030, abstract = {{Parts produced by Fused Deposition Modeling (FDM) tend to have rough and undulating surfaces with staircase effects on rounded and slanting areas of the part. This is due to the characteristics of the process. In many fields of application, high demands are made on the optical quality of the part. An improvement in the surface quality of FDM parts made of Ultem*9085 can be achieved through post-treatment with a mass finishing process. In this paper, FDM specimens are post-treated in a disk finishing unit. Influences of the mass finishing process are analyzed with regard to the dependence of surface quality on the various process parameters and on the finishing medium, grinding time and grinding speed. The finishing efficiency depends on the finishing media and decreases for lower finishing time. For all media a lower disk velocity results a smaller grinding effect, but there are clearly differences between the finishing media. The paper also discusses effects of the grinding process on the mechanical properties of the parts. Especially small part geometries and parts build in z-direction tend to break during the finishing process.}}, author = {{Fischer, M. and Schöppner, Volker}}, booktitle = {{ANTEC}}, isbn = {{978-1-63439-708-7}}, pages = {{2331--2336}}, publisher = {{SPE: Society of Plastics Engineers}}, title = {{{Effects of a mass finishing process on parts produced from Ultem 9085 by Fused Deposition Modeling}}}, year = {{2014}}, } @inproceedings{22021, abstract = {{Additive production techniques have the advantage of manufacturing parts without needing a forming tool. One of the most used additive manufacturing processes is "Fused Deposition Modeling" (FDM) which allows the production of prototypes and end-use parts. Due to the manufacture layer by layer, also complex part geometries can be created in one working step. Furthermore, lightweight parts with specific inner core structures can be manufactured in order to achieve good weightrelated strength properties. In this paper the mechanical behavior of lightweight parts manufactured with the 3D production system Fortus 400mc from Stratasys and the material Polyetherimide (PEI) with the trade name Ultem*9085 is analyzed. The test specimens were built up with different inner structures and building directions. Therefore, test specimens with known lightweight core geometries (e.g. corrugated and honeycomb cores) were designed. A four-point bending test was conducted to analyze the strength properties as well as the weight-related strength properties. Additionally the influence of the structure width, the structure wall thickness and the top layer thickness was analyzed using a honeycomb structure.}}, author = {{Bagsik, A. and Josupeit, S. and Schöppner, Volker and Klemp, E.}}, booktitle = {{29th International Conference of the Polymer Processing Society}}, pages = {{696--701}}, publisher = {{American Institute of Physics }}, title = {{{Mechanical Analysis of Lightweight Constructions manufactured with Fused Deposition Modeling}}}, doi = {{10.1063/1.4873874}}, volume = {{29}}, year = {{2014}}, } @article{31294, author = {{Weich, Tobias}}, issn = {{0022-2488}}, journal = {{Journal of Mathematical Physics}}, keywords = {{Mathematical Physics, Statistical and Nonlinear Physics}}, number = {{10}}, publisher = {{AIP Publishing}}, title = {{{Equivariant spectral asymptotics forh-pseudodifferential operators}}}, doi = {{10.1063/1.4896698}}, volume = {{55}}, year = {{2014}}, } @article{15965, abstract = {{Abstract}}, author = {{Leuders, Stefan and Lieneke, Tobias and Lammers, Stefan and Tröster, Thomas and Niendorf, Thomas}}, issn = {{0884-2914}}, journal = {{Journal of Materials Research}}, pages = {{1911--1919}}, title = {{{On the fatigue properties of metals manufactured by selective laser melting – The role of ductility}}}, doi = {{10.1557/jmr.2014.157}}, year = {{2014}}, } @article{22186, abstract = {{The reproducibility and reliability of quality aspects are an important challenge of the polymer laser sintering process. However, existing quality concepts and standardization activities considering influencing factors along the whole process chain have not been validated experimentally yet. In this work, these factors are analyzed and kept constant to obtain a reliable material data set for different layer thicknesses and testing temperatures. In addition, material qualities regarding powder ageing effects are analyzed using different build heights and layer thicknesses: while an increase of the layer thickness reduces mechanical part strength and density, it also results in a less intense thermal ageing of unmolten powder due to shorter build times.}}, author = {{Rüsenberg, Stefan and Josupeit, Stefan and Schmid, Hans-Joachim}}, issn = {{1687-8140}}, journal = {{Advances in Mechanical Engineering}}, publisher = {{SAGE Publications}}, title = {{{A method to characterize the quality of a polymer laser sintering process }}}, doi = {{10.1155/2014/185374}}, volume = {{6}}, year = {{2014}}, } @article{10036, author = {{Hölscher, Rebecca and Schmidt, Wolf Gero and Sanna, Simone}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, pages = {{10213--10220}}, title = {{{Modeling LiNbO3 Surfaces at Ambient Conditions}}}, doi = {{10.1021/jp502936f}}, year = {{2014}}, } @article{13514, author = {{Li, Yanlu and Schmidt, Wolf Gero and Sanna, S.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{9}}, title = {{{IntrinsicLiNbO3point defects from hybrid density functional calculations}}}, doi = {{10.1103/physrevb.89.094111}}, volume = {{89}}, year = {{2014}}, }