@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}}, } @inproceedings{16065, author = {{Kutz, P. and Wang, Z. and Ellouz, M. and Kordisch, T. and Tröster, Thomas}}, location = {{Bremen}}, title = {{{Computed Tomography Examination of Hybrid Components after Dynamic 3-Point Bending Test}}}, year = {{2017}}, } @phdthesis{16070, author = {{Weiß Borkowski, Nathalie }}, isbn = {{978-3-8440-5013-4}}, publisher = {{Shaker Verlag Band 2017/22}}, title = {{{Analyse des Verformungsverhaltens von Übergangszonen partiell pressgehärteter Strukturen}}}, year = {{2017}}, } @inproceedings{16071, author = {{Wang, Z. and Kutz, P. and Tröster, Thomas}}, location = {{Bielefeld}}, title = {{{Herstellung und computertomographische Untersuchung von hybriden Strukturen aus Metall und Faserverbundkunststoffen}}}, year = {{2017}}, } @inproceedings{16072, author = {{Weiß Borkowski, N. and Camberg, Alan Adam and Tröster, Thomas and Marten, Thorsten}}, location = {{Schloss Hohenkammer}}, title = {{{Influence of strain rate on the instability in high speed cupping tests – Investigation on dual phase steel and numerical validation by CRACH}}}, year = {{2017}}, } @inproceedings{16073, author = {{Weiß Borkowski, N. and Marten, Thorsten and Tröster, Thomas and Schulz Beenken, A.}}, isbn = {{978-1-935117-66-7}}, location = {{Atlanta, USA}}, title = {{{Analysis of the Forming Behaviour of Transition Areas of Partial Press-Hardened Steel at High Strain-Rates}}}, year = {{2017}}, } @inproceedings{16074, author = {{Ahlers, Dominik and Tröster, Thomas}}, location = {{Erfurt}}, title = {{{Materialkombinationen in der additive Fertigung}}}, year = {{2017}}, } @inproceedings{16075, author = {{Ahlers, Dominik and Tröster, Thomas}}, location = {{Nördlingen}}, title = {{{Aspekte der Produktentwicklung in der additiven Fertigung}}}, year = {{2017}}, } @inbook{10147, author = {{Simon, Dagmar and Steffen, Eckhard}}, booktitle = {{Handbuch Gestaltung digitaler und vernetzter Arbeitswelten,}}, editor = {{Maier, Günter W. and Engels, Gregor and Steffen, Eckhard}}, pages = {{1--12}}, publisher = {{Springer Berlin Heidelberg}}, title = {{{Digitale Zukunft: ein inter- und transdisziplinäres Thema}}}, year = {{2017}}, } @article{29915, abstract = {{Für On-Board-Ladegeräte sind brückenlose netzfreundliche Gleichrichter in Kombination mit einem Resonanzkonverter empfehlenswert. Auf diese Weise lassen sich Verluste minimieren und es wird eine hohe Leistungsdichte erreicht. Darüber hinaus wurde der Kühlungskreislauf des Ladegeräts durch CFD (Computational Fluid Dynamics, rechnergestützte Flüssigkeitsdynamik)-Simulationen des Kühlkanals optimiert, um einen bestmöglichen Wärmeübergang bei geringem Druckabfall zu erzielen.}}, author = {{Bolte, Sven and Henkenius, Carsten and Böcker, Joachim and Kenig, Eugeny and Zibart, Alexander and Figge, Heiko}}, journal = {{wt Werkstattstechnik online}}, number = {{5}}, pages = {{381ff}}, publisher = {{Springer-VDI-Verlag}}, title = {{{Wassergekühltes On-Board-Ladegerät mit optimiertem Kühlkanal}}}, volume = {{107}}, year = {{2017}}, } @inproceedings{29914, author = {{Bolte, Sven and Henkenius, Carsten and Böcker, Joachim and Zibart, Alexander and Kenig, Eugeny and Figge, Heiko}}, booktitle = {{2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)}}, location = {{Warsaw, Poland }}, publisher = {{IEEE}}, title = {{{Water-cooled on-board charger with optimized cooling channel}}}, doi = {{10.23919/epe17ecceeurope.2017.8099019}}, year = {{2017}}, } @article{22038, abstract = {{Micro Physiological Systems (MPS), also known as Multi-Organ-Chip, Organ-on-a-Chip, or Body-on-a-Chip, are advanced microfluidic systems that allow the cultivation of different types of cells and tissue in just one common circuit. Furthermore, they thus can also adjust the interaction of these different tissues. Perspectival MPS will replace animal testing. For fast and flexible manufacturing and marking of MPS, a concept for a universal micromachining platform has been developed which provides the following latest key technologies: laser micro cutting of polymer foils, laser micro- and sub-micro-structuring of polymer foils, 3D printing of polymer components as well as optical inspection and online process control. The combination of different laser sources, processing optics, inspection systems, and print heads on multiple axes allows the change and exactly positioning to the workpiece during the process. Therewith, the realization of MPS including 3D printed components as well as direct laser interference patterned surfaces for well-defined cell adhesion and product protection is possible. Additional basic technologies for the generation of periodical line-like structures at polycarbonate foils using special Direct Laser Interference Patterning (DLIP) optics as well as for the 3D printing of fluid-tight cell culture reservoirs made of Acrylonitrile Butadiene Styrene directly onto polycarbonate microfluidics were established. A first prototype of the universal micromachining platform combining different lasers with Direct Laser Writing and DLIP is shown. With this laser micro cutting as well as laser micro-structuring of polycarbonate (PC) foils and therewith functionalization for MPS application could be successfully demonstrated.}}, author = {{Moritzer, Elmar and Hirsch, André and Günther, K. and Sonntag, F. and Klotzbach, U. and Lasagni, A.F.}}, journal = {{Micromachines}}, number = {{246}}, publisher = {{MDPI}}, title = {{{Universal Micromachining Platform and Basic Technologies for the Manufacture and Marking of Microphysiological Systems}}}, doi = {{10.3390/mi8080246}}, volume = {{8}}, year = {{2017}}, } @article{22033, abstract = {{The mechanical characterization of fused deposition modeling (FDM) parts is mostly done by static tests. In many applications, parts are also dynamically loaded. Here, fatigue tests can help to identify the expected lifetime of a part. This article discusses the fatigue behavior of FDM specimens manufactured with Ultem 9085. For this, tensile bars are manufactured according to ASTM D638 in different build orientations. Tests are performed in a range of pulsating tensile stresses, and S-N curves are documented for different build orientations. For higher loads, the FDM anisotropy characterizes the lifetime of used specimens, which is similar to static tensile bars. For lower loads, including a higher number of cycles to failure, S-N curves of different build orientations converge. In further tests, tensile bars were chemically smoothed with chloroform vapor. Chemical smoothing reduces surface roughness and increases tensile strength of specimens in the upright build direction. Fatigue tests of chemically treated specimens show no significant lifetime increase.}}, author = {{Fischer, M. and Schöppner, Volker}}, journal = {{JOM: The Journal of The Minerals. Metals & Materials Society (TMS)}}, pages = {{563--568}}, publisher = {{Springer Verlag}}, title = {{{Fatigue Behavior of FDM Parts Manufactured with Ultem 9085}}}, doi = {{10.1007/s11837-016-2197-2}}, year = {{2017}}, } @inproceedings{22023, abstract = {{Fused Deposition Modeling (FDM) is an Additive Manufacturing (AM) technology which is used for prototypes, single-part-production and also small batch productions. For use as a final product, it is important that the parts have good mechanical properties, a high dimensional accuracy and smooth surfaces. The knowledge of the mechanical properties is very important for the design engineer when it comes to the component design. In this paper, investigations were conducted with the polymer ABS-M30 from Stratasys Inc. To achieve a quality improvement of FDM parts, various toolpath parameters and orientations were used. Within the mechanical properties, the tensile, flexural and impact strength were evaluated. Furthermore, the tensile strength of FDM parts is compared to injection molded specimens. With optimized parameters, an increase of the tensile strength by up to 28 % and a doubling of the impact strength were possible.}}, author = {{Knoop, F. and Kloke, A. and Schöppner, Volker}}, booktitle = {{32nd International Conference of the Polymer Processing Society}}, publisher = {{American Institute of Physics}}, title = {{{Quality Improvement of FDM Parts by Parameter Optimization }}}, doi = {{10.1063/1.5016790}}, volume = {{32}}, year = {{2017}}, } @inproceedings{27201, author = {{Schöppner, Volker and Schadomsky, Michael and Walter, J.}}, booktitle = {{25. Fachtagung Technomer}}, location = {{Chemnitz (Deutschland)}}, title = {{{Bestimmung der Mischgüte bei Kautschukstiftextrudern auf Basis experimenteller und simulativer Methoden}}}, year = {{2017}}, }