@inbook{23734, author = {{Lammers, Stefan and Kruse, Anne and Gierse, Jan and Tominski, Johannes and Lindemann, Christian-Friedrich}}, booktitle = {{Mehrzieloptimierte und durchgängig automatisierte Bauteilentwicklung für Additive Fertigungsverfahren im Produktentstehungsprozess}}, editor = {{Koch, Rainer and Zimmer, Detmar and Tröster, Thomas and Gräßler, Iris}}, isbn = {{978-3-8440-7932-6}}, title = {{{Konstruktionsrichtlinien in der Produktentwicklung}}}, year = {{2021}}, } @inproceedings{23760, abstract = {{The laser sintering process has been a well-established AM process for many years. Disadvantages of LS are the low material variety and the thermal damage of the unprocessed material. The low temperature laser sintering attacks at this point and processes powder material at a build chamber temperature lower than the recrystallization temperature. This drastic reduction in temperature results in significantly less thermal damage to the material. This work deals with the low temperature laser sintering of Polyamide 12 (PA12) on a commercial, unmodified laser sintering system to compare it to standard laser sintered PA12 and to create the basis for low temperature laser sintering of high temperature materials on such a system. First results by changing the exposure parameters and by fixing parts on a building platform show a processing of PA12 on an EOS P396 at a build chamber temperature less than 100 °C instead of standard approx. 175 °C.}}, author = {{Menge, Dennis and Schmid, Hans-Joachim}}, keywords = {{Low Temp LS, Low Temperature Laser Sintering, Polyamid 12}}, location = {{Austin, TX}}, title = {{{Low Temperature Laser Sintering on a Standard System: First Attempts and Results with PA12}}}, year = {{2021}}, } @inproceedings{23779, abstract = {{Produktentstehung (PE) bezieht sich auf den Prozess der Planung und Entwicklung eines Produkts sowie der damit verbundenen Dienstleistungen von der ersten Idee bis zur Herstellung und zum Vertrieb. Während dieses Prozesses gibt es zahlreiche Aufgaben, die von menschlichem Fachwissen abhängen und typischerweise von erfahrenen Experten übernommen werden. Da sich das Feld der Künstlichen Intelligenz (KI) immer weiterentwickelt und seinen Weg in den Fertigungssektor findet, gibt es viele Möglichkeiten für eine Anwendung von KI, um bei der Lösung der oben genannten Aufgaben zu helfen. In diesem Paper geben wir einen umfassenden Überblick über den aktuellen Stand der Technik des Einsatzes von KI in der PE. Im Detail analysieren wir 40 bestehende Surveys zu KI in der PE und 94 Case Studies, um herauszufinden, welche Bereiche der PE von der aktuellen Forschung in diesem Bereich vorrangig adressiert werden, wie ausgereift die diskutierten KI-Methoden sind und inwieweit datenzentrierte Ansätze in der aktuellen Forschung genutzt werden.}}, author = {{Bernijazov, Ruslan and Dicks, Alexander and Dumitrescu, Roman and Foullois, Marc and Hanselle, Jonas Manuel and Hüllermeier, Eyke and Karakaya, Gökce and Ködding, Patrick and Lohweg, Volker and Malatyali, Manuel and Meyer auf der Heide, Friedhelm and Panzner, Melina and Soltenborn, Christian}}, booktitle = {{Proceedings of the 30th International Joint Conference on Artificial Intelligence (IJCAI-21)}}, keywords = {{Artificial Intelligence Product Creation Literature Review}}, location = {{Montreal, Kanada}}, title = {{{A Meta-Review on Artificial Intelligence in Product Creation}}}, year = {{2021}}, } @article{23842, author = {{Baron, Elias and Feneberg, Martin and Goldhahn, Rüdiger and Deppe, Michael and Tacken, Fabian and As, Donat Josef}}, issn = {{0022-3727}}, journal = {{Journal of Physics D: Applied Physics}}, title = {{{Optical evidence of many-body effects in the zincblende Al$_\mathrm{x}$Ga$_\mathrm{1-x}$N alloy system}}}, doi = {{10.1088/1361-6463/abb97a}}, year = {{2021}}, } @article{23977, author = {{Tölle, Lisa and Hopp , Matthias}}, journal = {{Kunststoffland NRW Report }}, title = {{{Recycling faserverstärkter Kunststoffe zu Ende gedacht… }}}, year = {{2021}}, } @inproceedings{20540, author = {{Jovanovikj, Ivan and Thottam, Anu Tony and Joseph Vincent, Vishal and Yigitbas, Enes and Sauer, Stefan and Engels, Gregor}}, booktitle = {{Proceedings of the 9th International Conference on Model-Driven Engineering and Software Development }}, location = {{Vienna}}, pages = {{232--239}}, publisher = {{SCITEPRESS}}, title = {{{A Modeling Workbench for the Development of Situation-specific Test Co-Migration Methods }}}, year = {{2021}}, } @article{20592, abstract = {{GaAs-(111)-nanostructures exhibiting second harmonic generation are new building blocks in nonlinear optics. Such structures can be fabricated through epitaxial lift-off using selective etching of Al-containing layers and subsequent transfer to glass substrates. Herein, the selective etching of (111)B-oriented AlxGa1−xAs sacrificial layers (10–50 nm thick) with different aluminum concentrations (x = 0.5–1.0) in 10\% hydrofluoric acid is investigated and compared with standard (100)-oriented structures. The thinner the sacrificial layer and the lower the aluminum content, the lower the lateral etch rate. For both orientations, the lateral etch rates are in the same order of magnitude, but some quantitative differences exist. Furthermore, the epitaxial lift-off, the transfer, and the nanopatterning of thin (111)B-oriented GaAs membranes are demonstrated. Atomic force microscopy and high-resolution X-ray diffraction measurements reveal the high structural quality of the transferred GaAs-(111) films.}}, author = {{Henksmeier, Tobias and Eppinger, Martin and Reineke, Bernhard and Zentgraf, Thomas and Meier, Cedrik and Reuter, Dirk}}, journal = {{physica status solidi (a)}}, keywords = {{epitaxial lift-off, GaAs/AlxGa1−xAs heterostructures, selective etching}}, number = {{3}}, pages = {{2000408}}, title = {{{Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off}}}, doi = {{https://doi.org/10.1002/pssa.202000408}}, volume = {{218}}, 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}}, } @inproceedings{20886, author = {{Nickchen, Tobias and Heindorf, Stefan and Engels, Gregor}}, booktitle = {{Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision}}, location = {{Hawaii}}, pages = {{1994--2002}}, title = {{{Generating Physically Sound Training Data for Image Recognition of Additively Manufactured Parts}}}, year = {{2021}}, } @article{20900, author = {{Albert, M. and Golla, C. and Meier, Cedrik}}, issn = {{0022-0248}}, journal = {{Journal of Crystal Growth}}, title = {{{Optical in-situ temperature management for high-quality ZnO molecular beam epitaxy}}}, doi = {{10.1016/j.jcrysgro.2020.126009}}, volume = {{557}}, year = {{2021}}, } @inproceedings{22155, author = {{Gottschalk, Sebastian}}, booktitle = {{Advanced Software Engineering. Doctorial Consortium}}, publisher = {{CEUR}}, title = {{{Situation-specific Development of Business Models for Services in Software Ecosystems}}}, year = {{2021}}, } @article{22215, abstract = {{Topological states of light represent counterintuitive optical modes localized at boundaries of finite-size optical structures that originate from the properties of the bulk. Being defined by bulk properties, such boundary states are insensitive to certain types of perturbations, thus naturally enhancing robustness of photonic circuitries. Conventionally, the N-dimensional bulk modes correspond to (N – 1)-dimensional boundary states. The higher-order bulk-boundary correspondence relates N-dimensional bulk to boundary states with dimensionality reduced by more than 1. A special interest lies in miniaturization of such higher-order topological states to the nanoscale. Here, we realize nanoscale topological corner states in metasurfaces with C6-symmetric honeycomb lattices. We directly observe nanoscale topology-empowered edge and corner localizations of light and enhancement of light–matter interactions via a nonlinear imaging technique. Control of light at the nanoscale empowered by topology may facilitate miniaturization and on-chip integration of classical and quantum photonic devices.}}, author = {{Kruk, Sergey S. and Gao, Wenlong and Choi, Duk-Yong and Zentgraf, Thomas and Zhang, Shuang and Kivshar, Yuri}}, issn = {{1530-6984}}, journal = {{Nano Letters}}, number = {{11}}, pages = {{4592–4597}}, publisher = {{ACS}}, title = {{{Nonlinear Imaging of Nanoscale Topological Corner States}}}, doi = {{10.1021/acs.nanolett.1c00449}}, volume = {{21}}, year = {{2021}}, } @article{22447, abstract = {{Die Additive Fertigung bietet ein hohes Maß an Gestaltungsfreiheit und ermöglicht die wirt-schaftliche Nutzung von konventionell schwer zu verarbeitenden Materialien. Diese Merk-male ermöglichen neuartige Lösungsansätze bei Funktionsbauteilen in fast allen Anwen-dungsbereichen. Dieses Potential kann auch im Elektromaschinenbau genutzt werden. Am Bespiel des Rotors einer permanentmagneterregten Synchronmaschine (PMSM) lassen sich die Herausforderungen und Möglichkeiten exemplarisch beschreiben.}}, author = {{Magerkohl, Sebastian and Zimmer, Detmar and Tasche, Lennart and Schaper, Mirko and Urbanek, Stefan and Ponick, Bernd}}, isbn = {{0722-8546 (eISSN: 2747-7991)}}, journal = {{antriebstechnik - Zeitschrift für Konstruktion, Entwicklung und Anwendung von Antrieben und Steuerungen }}, number = {{6}}, pages = {{36--43}}, publisher = {{Vereinigte Fachverlage GmbH}}, title = {{{Funktionsoptimierte AM-Gestaltung eines E-Rotors}}}, volume = {{60}}, year = {{2021}}, } @article{22450, abstract = {{We realize and investigate a nonlinear metasurface taking advantage of intersubband transitions in ultranarrow GaN/AlN multi-quantum well heterostructures. Owing to huge band offsets, the structures offer resonant transitions in the telecom window around 1.55 µm. These heterostructures are functionalized with an array of plasmonic antennas featuring cross-polarized resonances at these near-infrared wavelengths and their second harmonic. This kind of nonlinear metasurface allows for substantial second-harmonic generation at normal incidence which is completely absent for an antenna array without the multi-quantum well structure underneath. While the second harmonic is originally radiated only into the plane of the quantum wells, a proper geometrical arrangement of the plasmonic elements permits the redirection of the second-harmonic light to free-space radiation, which is emitted perpendicular to the surface.}}, author = {{Mundry, Jan and Spreyer, Florian and Jmerik, Valentin and Ivanov, Sergey and Zentgraf, Thomas and Betz, Markus}}, issn = {{2159-3930}}, journal = {{Optical Materials Express}}, number = {{7}}, publisher = {{OSA}}, title = {{{Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays}}}, doi = {{10.1364/ome.426236}}, volume = {{11}}, year = {{2021}}, } @inproceedings{22480, abstract = {{In this publication important aspects for the implementation of inductive locating are explained. The miniaturized sensor platform called Sens-o-Spheres is used as an application of this locating method. The sensor platform is applied in bioreactors in order to obtain the environmental parameters, which makes a localization by magnetic fields necessary. Since the properties of magnetic fields in the localization area are very different from the wave characteristics, the principle of inductive localization is investigated in this publication and explained by using electrical equivalent circuit diagrams. Thereby, inductive localization uses the coupling or the mutual inductivities between coils, which is noticeable by an induced voltage. Therefore some properties and procedures are explained to extract the location of Sens-o-Spheres or other industrial sensor platforms from the couplings of the coils. One method calculates the location from an adapted ratio calculation and the other method uses neural networks and stochastic filters to obtain the results. In the end, these results are evaluated and compared.}}, author = {{Lange, Sven and Schröder, Dominik and Hedayat, Christian and Kuhn, Harald and Hilleringmann, Ulrich}}, booktitle = {{22nd IEEE International Conference on Industrial Technology (ICIT)}}, isbn = {{9781728157306}}, keywords = {{Location awareness, Coils, Couplings, Nonuniform electric fields, Magnetic separation, Neural networks, Training data}}, location = {{Valencia, Spain }}, publisher = {{IEEE}}, title = {{{Development of Methods for Coil-Based Localization by Magnetic Fields of Miniaturized Sensor Platforms in Bioprocesses}}}, doi = {{10.1109/icit46573.2021.9453609}}, year = {{2021}}, } @inproceedings{22481, abstract = {{During the industrial processing of materials for the manufacture of new products, surface defects can quickly occur. In order to achieve high quality without a long time delay, it makes sense to inspect the work pieces so that defective work pieces can be sorted out right at the beginning of the process. At the same time, the evaluation unit should come close the perception of the human eye regarding detection of defects in surfaces. Such defects often manifest themselves by a deviation of the existing structure. The only restriction should be that only matt surfaces should be considered here. Therefore in this work, different classification and image processing algorithms are applied to surface data to identify possible surface damages. For this purpose, the Gabor filter and the FST (Fused Structure and Texture) features generated with it, as well as the salience metric are used on the image processing side. On the classification side, however, deep neural networks, Convolutional Neural Networks (CNN), and autoencoders are used to make a decision. A distinction is also made between training using class labels and without. It turns out later that the salience metric are best performed by CNN. On the other hand, if there is no labeled training data available, a novelty classification can easily be achieved by using autoencoders as well as the salience metric and some filters.}}, author = {{Sander, Tom and Lange, Sven and Hilleringmann, Ulrich and Geneis, Volker and Hedayat, Christian and Kuhn, Harald and Gockel, Franz-Barthold}}, booktitle = {{22nd IEEE International Conference on Industrial Technology (ICIT)}}, isbn = {{9781728157306}}, keywords = {{Image Processing, Defect Detection, wooden surfaces, Machine Learning, Neural Networks}}, location = {{Valencia, Spain }}, publisher = {{IEEE}}, title = {{{Detection of Defects on Irregular Structured Surfaces by Image Processing Methods for Feature Extraction}}}, doi = {{10.1109/icit46573.2021.9453646}}, year = {{2021}}, } @article{22495, author = {{Zimmer, Detmar and Koers, Thorsten and Bührmann, Tobias}}, isbn = {{1613-5504}}, journal = {{Newsletter der Wissenschaftlichen Gesellschaft für Produktentwicklung}}, pages = {{9--10}}, publisher = {{Wissenschaftliche Gesellschaft für Produktentwicklung WiGeP}}, title = {{{Zukunftstechnologie und moderne Antriebe kombiniert: AM in modularen Antriebssystemen}}}, volume = {{1}}, 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}}, } @inproceedings{22532, abstract = {{In this publication, further elements of the newly developed inductive localization in the near field are presented. The advantage of inductive localization is the usage of the magnetic fields, which have a very low influence of non-metallic materials in the environment and thus follows good applications in the area of medicine and biochemistry. This allows a precise localization of sensor platforms in inhomogeneous mixtures of materials, where classical methods have major problems with inhomogeneous dielectric conductivity or density. The calculation of the localization of the searched object differs from other methods such as ultrasound or electromagnetic waves due to the source-free propagation of the magnetic field. Therefore, new mathematical evaluation methods and systematic adaptations are necessary, which are presented in this paper in circuit analysis. For this purpose, the exact circuit influences of one coil and the influence of another coil are investigated and which resonance circuit should be selected for both coils for a inductive localization with optimized signal strength.}}, author = {{Lange, Sven and Hedayat, Christian and Kuhn, Harald and Hilleringmann, Ulrich}}, booktitle = {{2021 Smart Systems Integration (SSI)}}, isbn = {{9781665440929}}, keywords = {{Electrotechnical Characteristics of Real Coils, Inductive Localization, Resonant Circuit, Mutual Inductance, Near-Field}}, location = {{Grenoble, France }}, publisher = {{IEEE}}, title = {{{Adaptation and Optimization of Planar Coils for a More Accurate and Far-Reaching Magnetic Field-Based Localization in the Near Field}}}, doi = {{10.1109/ssi52265.2021.9466958}}, year = {{2021}}, }