@inproceedings{21702, abstract = {{Nowadays, the material efficiency and part reliability are two majorissues in product development. Thus a product optimization often requires complex structures that are hard to be manufactured conventionally. Additive Manufacturing (AM) however offers great potentials for producing complex shaped parts economically. Different approaches are feasible to exploit these potentials based on the part’s application from shape optimization of structural components to the integration of functions and other entities of assemblies. Several parameters are defined that influence the costs and quality of the future product and carefully have to be balanced. To do so, the use of already known tools for the optimization and design needs to be reconsidered and adapted to the special characteristics of AM. As not all optimization potentials can be realized perfectly, a decision methodology is required to obtain the relevant potentials and to get to a trade-off between all requirements including the ecological impact. The paper shows different approaches for product optimization with AM and procedures for decision making in order to get to the optimal solution.}}, author = {{Reiher, T. and Deppe, G. and Koch, R.}}, booktitle = {{International Conference Production Engineering and Management 2016}}, isbn = {{978-3-946856-00-9}}, pages = {{27--38}}, title = {{{Combining material efficiency and part reliability by product optimization applying additive manufacturing}}}, doi = {{https://www.th-owl.de/elsa/download/333/334/PEM_2016_Proceeding_2016_09_14_Inhaltsnavigation.pdf}}, volume = {{6}}, year = {{2016}}, } @inproceedings{21705, abstract = {{Additive Fertigungsverfahren bieten in der Luftfahrtindustrie großes Potential. Die Geometriefreiheit ermöglicht die Produktion von komplexen und gewichtsoptimierten Bauteilen. Die mangelnde Erfahrung der Unternehmen mit dieser Fertigungstechnologie erschwert jedoch die Entscheidung, an welcher Stelle Additive Manufacturing ökonomisch sinnvoll eingesetzt werden kann. Die Kosteneinflussfaktoren unterscheiden sich an vielen Stellen von denen traditioneller Fertigungsverfahren und müssen gänzlich neu bewertet und eingeordnet werden. Dabei verlagert sich auch der Fokus weg von den reinen Herstellkosten hinzu einer ganzheitlichen Kostenbetrachtung. Wesentliche Vorteile lassen sich auch meist in der Supply Chain erzielen und müssen im Zuge des Entscheidungsprozesses für ein Fertigungsverfahren bei einem bestimmten Bauteil berücksichtigt werden. Daher werden in der Präsentation die Charakteristika der Luftfahrt analysiert und die Methodik einer Entscheidungsunterstützung vorgestellt. Im Zuge dessen gilt es die Kostenbewertung additiver Fertigungsverfahren näher zu beleuchten, um die Fertigungs- bzw. Reperaturkosten mit traditionellen Verfahren vergleichen zu können. Weiterhin müssen Veränderungen in der Supply Chain identifiziert und bewertbar gemacht werden. Qualitätskriterien müssen ebenfalls mit in die Betrachtung einbezogen werden. Anschließend wird aufgeziegt wie diese Einflussfaktoren in die Entscheidungsunterstützung integriert sind.}}, author = {{Deppe, G. and Koch, R.}}, booktitle = {{Rapid Tech 2016}}, isbn = {{978-3-446-45017-2}}, pages = {{349--360}}, publisher = {{Hanser Verlag}}, title = {{{Unterstützung des AM Entscheidungsprozesses in der Luftfahrtersatzteilversorgung}}}, doi = {{https://doi.org/10.3139/9783446450608.031}}, volume = {{13}}, year = {{2016}}, } @inproceedings{21997, abstract = {{The paper gives an overview of actually used Additive Manufacturing (AM) data formats and AM data infrastructure. Based on empirical analysis of the actual situation, necessary improvement of data management and exchange formats in context with AM technology is derived. The purpose of this paper is to understand the actual use of data formats and management in the field of AM. The paper draws conclusions based on an empirical analysis of the used data formats dependent on stakeholder groups. The results of the expert survey show a necessity to improve or develop new AM specific data formats.}}, author = {{Gräßler, I. and Taplick, P. and Pottebaum, J. and Scholle, P. and Reiher, T.}}, booktitle = {{14th International DESIGN Conference 2016}}, title = {{{Data Management for additive manufacturing: survey on requirements and current state}}}, doi = {{https://www.designsociety.org/publication/38831/DATA+MANAGEMENT+FOR+ADDITIVE+MANUFACTURING%3A+SURVEY+ON+REQUIREMENTS+AND+CURRENT+STATE}}, volume = {{14}}, year = {{2016}}, } @inproceedings{22019, 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}}, booktitle = {{27th Annual International Solid Freeform Fabrication Symposium }}, pages = {{563–568}}, title = {{{Fatigue Behavior of FDM Parts Manufactured with Ultem 9085}}}, doi = {{10.1007/s11837-016-2197-2}}, volume = {{27}}, year = {{2016}}, } @article{22025, abstract = {{Das Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS etablierte in enger Kooperation mit Partnern in den letzten Jahren erfolgreich eine geschlossene Technologiekette zur Umsetzung maßgeschneiderter mikrophysiologischer Systeme. Darauf aufbauend wurde eine universelle Mikrobearbeitungsplattform zum automatisierten Fertigen konzipiert und entwickelt. Dies umfasst neue Technologien für Schlüsselprozesse wie das Herstellen mikrofluidischer Komponenten mittels ARBURG Kunststoff-Freiformen sowie das Erzeugen funktionaler Strukturen und das Einbringen von Produktschutzmerkmalen auf innenliegenden Polymergrenzflächen mittels Direktem Laserinterferenz-Verfahren.}}, author = {{Moritzer, Elmar and Hirsch, André and Günther, K. and Teutoburg-Weiss, S. and Lasagni, A.F. and Klotzbach, U. and Sonntag, F.}}, isbn = {{978-3-95908-078-1}}, journal = {{6. Dresdner Medizintechnik-Symposium, Biomedizinische Technik - interdisziplinär, integrativ und innovativ}}, pages = {{65--70}}, title = {{{Universelle Mikrobearbeitungsplaffform und Basistechnologien für das Fertigen und Markieren mikrophysiologischer Systeme}}}, volume = {{6}}, year = {{2016}}, } @inproceedings{22039, abstract = {{The material Ultem 9085 is a flame-retardant thermoplastic polymer, which can be processed with Fused Deposition Modeling (FDM). Due to ist high strength-to-weight ratio and FST rating, Ultem 9085 parts are used in aviation. Process related staircase effects on rounded and slanting part areas require a surface treatment for end use parts. These processes include smoothing by mass finishing or coating in order to reduce surface roughness. An alternative smoothing technique is chemical surface treatment, such as the use of Acetone for ABS materials. In this paper, the surface of Ultem 9085 parts is treated with Chloroform vapor in order to solve material at the surface and smooth it. Therefore, specimens built in different build orientations are treated and tested with regard to surface roughness values and mechancial strength properties. The analysis of surface roughness and treatment time shows a significantly higher efficiency for chemical treatment in comparison to mass finishing. By employing chemical treatment, it is possible to reduce surface roughness by more than 80 % to Rz values of approximately 15 µm. Mechanical tests and measurements of the Melt Volume Rate (MVR) show no material destruction for chemical surface treatment at room temperature for less than 150 min.}}, author = {{Fischer, M. and Seewald, O. and Schöppner, Volker}}, booktitle = {{Rapid Tech - International Trade Show & Conference for Additive Manufacturing}}, pages = {{121--133}}, publisher = {{Carl Hanser Verlag GmbH & Co. KG}}, title = {{{Chemical Surface Treatment of Ultem 9085 Parts}}}, doi = {{10.3139/9783446450608.010}}, year = {{2016}}, } @article{7699, author = {{Sitarek, P. and Ryczko, K. and Misiewicz, J. and Reuter, Dirk and Wieck, A.}}, issn = {{0587-4246}}, journal = {{Acta Physica Polonica A}}, number = {{5}}, pages = {{849--851}}, publisher = {{Institute of Physics, Polish Academy of Sciences}}, title = {{{Optical Transitions between Confined and Unconfined States in p-Type Asymmetric GaAs/InGaAs/AlGaAs QW Structures}}}, doi = {{10.12693/aphyspola.120.849}}, volume = {{120}}, year = {{2016}}, } @article{7706, author = {{Jadczak, J. and Bryja, L. and Wójs, A. and Bartsch, G. and Yakovlev, D.R. and Bayer, M. and Plochocka, P. and Potemski, M. and Reuter, Dirk and Wieck, A.}}, issn = {{0587-4246}}, journal = {{Acta Physica Polonica A}}, number = {{5}}, pages = {{600--601}}, publisher = {{Institute of Physics, Polish Academy of Sciences}}, title = {{{Exciton Exchange between Nearly-Free and Acceptor-Bound States of a Positive Trion Assisted by Cyclotron Excitation}}}, doi = {{10.12693/aphyspola.119.600}}, volume = {{119}}, year = {{2016}}, } @article{5759, author = {{Jovanovikj, Ivan and Grieger, Marvin and Yigitbas, Enes}}, journal = {{Softwaretechnik-Trends, Proceedings of the 18th Workshop Software-Reengineering & Evolution (WSRE) & 7th Workshop Design for Future (DFF)}}, location = {{Bad Honnef}}, number = {{2}}, pages = {{65--66}}, title = {{{Towards a Model-Driven Method for Reusing Test Cases in Software Migration Projects}}}, volume = {{36}}, year = {{2016}}, } @article{6249, author = {{Fischer, Holger Gerhard and Kauer-Franz, Michaela and Winter, Dominique and Latt, Stefan}}, issn = {{2196-6826}}, journal = {{i-com}}, number = {{1}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{UUX Method Selection}}}, doi = {{10.1515/icom-2016-0011}}, volume = {{15}}, year = {{2016}}, } @inbook{6257, author = {{Fischer, Holger Gerhard and Senft, Björn}}, booktitle = {{Human-Centered and Error-Resilient Systems Development}}, editor = {{Bogdan, Christian}}, isbn = {{9783319449012}}, issn = {{0302-9743}}, location = {{Stockholm, Sweden}}, pages = {{30--41}}, publisher = {{Springer International Publishing}}, title = {{{Human-Centered Software Engineering as a Chance to Ensure Software Quality Within the Digitization of Human Workflows}}}, doi = {{10.1007/978-3-319-44902-9_3}}, volume = {{9856}}, year = {{2016}}, } @inproceedings{6258, author = {{Fischer, Holger Gerhard and Rose, Mirko and Yigitbas, Enes}}, booktitle = {{Joint Proceedings of the REFSQ 2016 Co-Located Events. 2nd Workshop on Continuous Requirements Engineering (CRE)}}, publisher = {{CEUR-WS}}, title = {{{Towards a Task Driven Approach Enabling Continuous User Requirements Engineering}}}, volume = {{1564}}, year = {{2016}}, } @proceedings{6307, editor = {{Hess, Steffen and Fischer, Holger Gerhard}}, publisher = {{Gesellschaft für Informatik e.V. und German UPA e.V.}}, title = {{{Mensch und Computer 2016 - Usability Professionals. Tagungsband}}}, year = {{2016}}, } @article{7024, author = {{Sharma, Nandlal and Reuter, Dirk}}, issn = {{0022-0248}}, journal = {{Journal of Crystal Growth}}, pages = {{225--229}}, publisher = {{Elsevier BV}}, title = {{{A modified gradient approach for the growth of low-density InAs quantum dot molecules by molecular beam epitaxy}}}, doi = {{10.1016/j.jcrysgro.2016.11.117}}, volume = {{477}}, year = {{2016}}, } @article{7030, author = {{Tiemeyer, S and Bombeck, M and Göhring, H and Paulus, M and Sternemann, C and Nase, J and Wirkert, F J and Möller, J and Büning, T and Seeck, O H and Reuter, Dirk and Wieck, A D and Bayer, M and Tolan, M}}, issn = {{0957-4484}}, journal = {{Nanotechnology}}, number = {{42}}, publisher = {{IOP Publishing}}, title = {{{Polaron-induced lattice distortion of (In,Ga)As/GaAs quantum dots by optically excited carriers}}}, doi = {{10.1088/0957-4484/27/42/425702}}, volume = {{27}}, year = {{2016}}, } @article{7031, author = {{Kramer, Tobias and Kreisbeck, Christoph and Riha, Christian and Chiatti, Olivio and Buchholz, Sven S. and Wieck, Andreas D. and Reuter, Dirk and Fischer, Saskia F.}}, issn = {{2158-3226}}, journal = {{AIP Advances}}, number = {{6}}, publisher = {{AIP Publishing}}, title = {{{Thermal energy and charge currents in multi-terminal nanorings}}}, doi = {{10.1063/1.4953812}}, volume = {{6}}, year = {{2016}}, } @article{7054, author = {{Schuster, J and Kim, T Y and Batke, E and Reuter, Dirk and Wieck, A D}}, issn = {{2053-1591}}, journal = {{Materials Research Express}}, number = {{5}}, publisher = {{IOP Publishing}}, title = {{{Electric field distribution and exciton recombination line shape in GaAs}}}, doi = {{10.1088/2053-1591/3/5/056201}}, volume = {{3}}, year = {{2016}}, } @article{7055, author = {{Wecker, Tobias and Callsen, Gordon and Hoffmann, Axel and Reuter, Dirk and As, Donat Josef}}, issn = {{0021-4922}}, journal = {{Japanese Journal of Applied Physics}}, number = {{5S}}, publisher = {{Japan Society of Applied Physics}}, title = {{{Photoluminescence excitation spectroscopy of excited states of an asymmetric cubic GaN/Al0.25Ga0.75N double quantum well grown by molecular beam epitaxy}}}, doi = {{10.7567/jjap.55.05fg01}}, volume = {{55}}, year = {{2016}}, } @article{7056, author = {{Onur, A. R. and de Jong, J. P. and O'Shea, D. and Reuter, Dirk and Wieck, A. D. and van der Wal, C. H.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{16}}, publisher = {{American Physical Society (APS)}}, title = {{{Stabilizing nuclear spins around semiconductor electrons via the interplay of optical coherent population trapping and dynamic nuclear polarization}}}, doi = {{10.1103/physrevb.93.161204}}, volume = {{93}}, year = {{2016}}, } @article{7057, author = {{Riha, Christian and Chiatti, Olivio and Buchholz, Sven S. and Reuter, Dirk and Wieck, Andreas D. and Fischer, Saskia F.}}, issn = {{1862-6300}}, journal = {{physica status solidi (a)}}, number = {{3}}, pages = {{571--581}}, publisher = {{Wiley}}, title = {{{Heat flow, transport and fluctuations in etched semiconductor quantum wire structures}}}, doi = {{10.1002/pssa.201532551}}, volume = {{213}}, year = {{2016}}, }