@article{48360, author = {{Hopp, Matthias and Tölle, Lisa}}, journal = {{Proceedings of the 20th European Conference on Composite Materials}}, number = {{Vol. 6}}, pages = {{119--125}}, title = {{{EFFECT OF SHREDDING PARAMETERS ON THE FORMATION OF AIRBORNE FIBER DUST DURING MECHANICAL RECYCLING OF FIBER-REINFORCED THERMOPLASTICS}}}, year = {{2022}}, } @inproceedings{34176, abstract = {{Cascaded H-bridge Converters (CHBs) are a promising solution in converting power from a three-phase medium voltage of 6.6 kV...30 kV to a lower DC-voltage in the range of 100 V...1 kV to provide pure DC power to applications such as electrolyzers for hydrogen generation, data centers with a DC power distribution and DC microgrids. CHBs can be interpreted as modular multilevel converters with an isolated DC-DC output stage per module, require a large DC-link capacitor for each module to handle the second harmonic voltage ripple caused by the fluctuating input power within a fundamental grid period. Without a zero-sequence voltage injection, star-connected CHBs are operated with approximately sinusoidal arm voltages and currents. The floating star point potential enables to utilize different zero-sequence voltage injection techniques such as a third-harmonic injection with 1/6 of the grid voltage amplitude or a Min-Max voltage injection. Both well-known methods have the advantage to reduce the peak arm voltage and thereby the number of required modules by 13.4 % (to √ 3 2). This paper proves analytically that the third-harmonic injection with 1/6 of the grid voltage amplitude reduces the second harmonic voltage ripple by only 15.1 % compared to no-voltage injection for unity power factor operation and balanced grid voltages. Then it is shown, that the Min-Max injection has the often overlooked advantage of reducing the second harmonic voltage ripple by even 18.8 %. By applying the here proposed zero-sequence voltage injection in saturation modulation, the second harmonic voltage ripple of the DC-link capacitors is reduced by even 24.3 %, while still requiring the same number of modules as the Min-Max injection. For a realistic number of reserve modules, the overall energy ripple in the DC-link capacitors is reduced by 40 %.}}, author = {{Unruh, Roland and Schafmeister, Frank and Böcker, Joachim}}, booktitle = {{24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)}}, isbn = {{978-9-0758-1539-9}}, keywords = {{Cascaded H-Bridge, Solid-State Transformer, Zero sequence voltage, Third harmonic injection, Capacitor voltage ripple}}, location = {{Hanover, Germany}}, publisher = {{IEEE}}, title = {{{Zero-Sequence Voltage Reduces DC-Link Capacitor Demand in Cascaded H-Bridge Converters for Large-Scale Electrolyzers by 40%}}}, year = {{2022}}, } @inproceedings{48354, author = {{Moritzer, Elmar and Wächter, Julian}}, location = {{Fukuoka (Japan)}}, title = {{{Qualification of Different Carbon Fiber Reinforced Polyether Ether Ketone Materials for the FFF Process}}}, year = {{2022}}, } @book{48353, author = {{Gevers, Karina and Schraa, L and Uhlig, K and Töws, P and Stommel, M}}, isbn = {{978-3-88355-430-3 }}, pages = {{169--175}}, title = {{{Bewertung von IR-Schweißverbindungen an kurzfaserverstärkten Thermoplasten mittels digitaler Bildkorrelation}}}, volume = {{Tagung Werkstoffprüfung 2022 - Werkstoffe und Bauteile auf dem Prüfstand}}, year = {{2022}}, } @book{48356, author = {{Schöppner, Volker and Vogtschmidt, Sascha}}, isbn = {{978-3-96144-190-7 }}, pages = {{534--540}}, title = {{{Schweißnahtkennwerte für die lebensdaueroptimierte Bauteilauslegung von hochtemperaturbeständigen Thermoplasten}}}, year = {{2022}}, } @book{48358, author = {{Schöppner, Volker and Dörner, M. and Frank, Maximilian and Schall, Christoph}}, title = {{{On the Wave to Successful Mixing}}}, year = {{2022}}, } @misc{35901, author = {{Böttger, Lydia}}, booktitle = {{www.daz-portal.de}}, title = {{{Lydia Böttger (Universität Paderborn) rezensiert: Michalak, Magdalena; Döll, Marion (Hrsg.) (2021): Lehrwerke und Lehrmaterialien im Kontext des Deutschen als Zweitsprache und der sprachlichen Bildung. [Deutsch als Zweitsprache Positionen, Perspektiven, Potenziale, Bd. 2]. Münster, New York: Waxmann, 164 Seiten. ISBN 978-3-8309-4105-7.}}}, year = {{2022}}, } @article{34733, abstract = {{Due to their valuable properties (low weight, and good thermal and mechanical properties), glass fiber reinforced thermoplastics are becoming increasingly important. Fiber-reinforced thermoplastics are mainly manufactured by injection molding and extrusion, whereby the extrusion compounding process is primarily used to produce fiber-filled granulates. Reproducible production of high-quality components requires a granulate in which the fiber length is even and high. However, the extrusion process leads to the fact that fiber breakages can occur during processing. To enable a significant quality enhancement, experimentally validated modeling is required. In this study, short glass fiber reinforced thermoplastics (polypropylene) were produced on two different twin-screw extruders. Therefore, the machine-specific process behavior is of major interest regarding its influence. First, the fiber length change after processing was determined by experimental investigations and then simulated with the SIGMA simulation software. By comparing the simulation and experimental tests, important insights could be gained and the effects on fiber lengths could be determined in advance. The resulting fiber lengths and distributions were different, not only for different screw configurations (SC), but also for the same screw configurations on different twin-screw extruders. This may have been due to manufacturer-specific tolerances.}}, author = {{Rüppel, Annette and Wolff, Susanne and Oldemeier, Jan Philipp and Schöppner, Volker and Heim, Hans-Peter}}, issn = {{2073-4360}}, journal = {{Polymers}}, keywords = {{Polymers and Plastics, General Chemistry}}, number = {{15}}, publisher = {{MDPI AG}}, title = {{{Influence of Processing Glass-Fiber Filled Plastics on Different Twin-Screw Extruders and Varying Screw Designs on Fiber Length and Particle Distribution}}}, doi = {{10.3390/polym14153113}}, volume = {{14}}, year = {{2022}}, } @inproceedings{34001, author = {{Arian, Bahman and Homberg, Werner and Kersting, Lukas and Trächtler, Ansgar and Rozo Vasquez, Julian}}, booktitle = {{36. Aachener Stahlkolloquium – Umformtechnik “Ideen Form geben“}}, isbn = {{978-3-95886-460-3}}, pages = {{333--347}}, title = {{{Produktkennzeichnung durch lokal definierte Einstellung von ferromagnetischen Eigenschaften beim Drückwalzen von metastabilen Stahlwerkstoffen}}}, year = {{2022}}, } @inproceedings{34003, author = {{Arian, Bahman and Oesterwinter, Annika and Homberg, Werner and Rozo Vasquez, Julian and Walther, Frank and Kersting, Lukas and Trächtler, Ansgar}}, booktitle = {{19th Int. Conference on Metal Forming 2022}}, title = {{{A flow forming process model to predict workpiece properties in AISI 304L}}}, year = {{2022}}, } @misc{50086, author = {{Pauls, Karina}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{332--336}}, publisher = {{ATHENA/wbv}}, title = {{{Kunstpädagogische Handlungsfelder}}}, volume = {{5954}}, year = {{2022}}, } @misc{50083, author = {{Pauls, Karina}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{41--43}}, publisher = {{ATHENA/wbv}}, title = {{{Arts and Crafts-Bewegung}}}, volume = {{5954}}, year = {{2022}}, } @misc{50085, author = {{Pauls, Karina and Nafe, Nadja}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{253--255}}, publisher = {{ATHENA/wbv}}, title = {{{Inszenierung}}}, volume = {{5954}}, year = {{2022}}, } @misc{50084, author = {{Pauls, Karina}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{250--253}}, publisher = {{ATHENA/wbv}}, title = {{{Installation}}}, volume = {{5954}}, year = {{2022}}, } @misc{50087, author = {{Pauls, Karina}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{360--363}}, publisher = {{ATHENA/wbv}}, title = {{{Materialität}}}, volume = {{5954}}, year = {{2022}}, } @misc{50091, author = {{Pauls, Karina}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{496--498}}, publisher = {{ATHENA/wbv}}, title = {{{Studio Thinking}}}, volume = {{2}}, year = {{2022}}, } @misc{50092, author = {{Pauls, Karina}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{347--348}}, publisher = {{ATHENA/wbv}}, title = {{{Lernort Schule}}}, volume = {{5954}}, year = {{2022}}, } @misc{50088, author = {{Pauls, Karina}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{458--460}}, publisher = {{ATHENA/wbv}}, title = {{{Relief}}}, volume = {{5954}}, year = {{2022}}, } @misc{50090, author = {{Pauls, Karina}}, booktitle = {{Lexikon der Kunstpädagogik}}, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{527--528}}, publisher = {{ATHENA/wbv}}, title = {{{Werken}}}, volume = {{5954}}, year = {{2022}}, } @book{50114, editor = {{Bering, Kunibert and Niehoff, Rolf and Pauls, Karina}}, isbn = {{978-3-8252-5954-9}}, pages = {{549}}, publisher = {{ATHENA/wbv}}, title = {{{Lexikon der Kunstpädagogik}}}, year = {{2022}}, }