TY - CONF AB - Abstract. Climate change, rare resources and industrial transformation processes lead to a rising demand of multi-complex lightweight forming parts, especially in aerospace and automotive sectors. In these industries, flow forming is often used to produce cylindrical forming parts by reducing the wall thickness of tubular semifinished parts, e.g. for the production of hydraulic cylinders or gear shafts. The complexity and functionality of flow forming workpieces could be significantly increased by locally graded microstructure and geometry structures. This enables customized complex hardness distributions at wear surfaces or magnetic QR codes for a unique, tamper-proof product identification. The production of those complex, 2D (axial and angular) graded forming parts currently depicts a great challenge for the process and requires new solutions and strategies. Hence, this paper proposes a novel control strategy that includes online measurements from an absolute encoder to determine the angular workpiece position. Workpieces of AISI 304L stainless steel with 2D-graded structures are successfully manufactured using this new strategy and analyzed regarding the possible accuracy and resolution of the gradation. At this point, a dependency of the gradations on the sensor and actuator dynamics, accuracy and geometry could be noted. It is further evaluated how the control strategy could be extended by an observer-based closed-loop property control approach to enhance the accuracy of the suggested strategy. AU - Kersting, Lukas AU - Arian, Bahman AU - Rozo Vasquez, Julian AU - Trächtler, Ansgar AU - Homberg, Werner AU - Walther, Frank ID - 44315 SN - 2474-395X T2 - Materials Research Proceedings TI - Control strategy for angular gradations by means of the flow forming process ER - TY - CHAP AU - Newberry, Melissa AU - Rizvi, Meher AU - van der Want, Anna AU - Jonas-Ahrend, Gabriela AU - Kaldi, Stavroula AU - Kihara, Toshiyuki AU - Franco, Juan Vicente Ortiz AU - Ratnam, Tara ID - 45652 SN - 1479-3687 T2 - Advances in Research on Teaching TI - Teacher Educators' Experiences and Expressions of Emotion During the Pandemic: International Perspectives ER - TY - JOUR AU - Rozo Vasquez, Julian AU - Arian, Bahman AU - Kersting, Lukas AU - Walther, Frank AU - Homberg, Werner AU - Trächtler, Ansgar ID - 44318 JF - Metals TI - Detection of phase transformation during plastic deformation of metastable austenitic steel AISI 304L by means of X-ray diffraction pattern analysis ER - TY - GEN AU - Thorenz, Kristin AU - Berwinkel, Andre AU - Weigelt, Matthias ED - Schlesinger, Torsten ED - Grimminger-Seidensticker, Elke ED - Ferrauti, Alexander ED - Kellmann, Michael ED - Thiel, Christian ED - Kullik, Lisa ID - 47418 SN - 978-3-88020-714-1 T2 - Leistung steuern. Gesundheit stärken. Entwicklung fördern. TI - The affective response following autogenic training VL - 301 ER - TY - CHAP AU - Biehler, Rolf AU - Engel, Joachim AU - Frischemeier, Daniel ED - Bruder, Regina ED - Büchter, A. ED - Gasteiger, H. ED - Schmidt-Thieme, B. ED - Weigand, HG. ID - 47416 SN - 9783662666036 T2 - Handbuch der Mathematikdidaktik TI - Stochastik: Leitidee Daten und Zufall ER - TY - JOUR AU - Methfessel, Annette AU - Janzen, Thomas ID - 47423 IS - 2 JF - Englisch betrifft uns TI - Living the Dream? Relating to the living conditions of Hispanic migrants in California through the short story Inside Out ER - TY - CHAP AU - Rezat, Sara ED - von Heynitz, Martina ID - 47450 T2 - Die Konstruktion stärken: Ein Handlungsfeld der Deutschdidaktik neu betrachtet TI - Konstruktionen in der prozedurenorientierten Schreibdidaktik. ER - TY - JOUR AU - Rezat, Sara AU - Scholle, Oliver ID - 47451 IS - (1) JF - Medien im Deutschunterricht TI - AnnoPy – Ein digitales Tool zur Förderung von Textkompetenzen. VL - 5 ER - TY - CONF AB - In this paper we present a new system architecture for software-defined radio / radar with optical signal distribution. The proposed architecture allows to transmit the optical carrier and an arbitrary IQ signal on the same fiber from a base station to wireless transmitters using a single laser. Furthermore, we can reuse parts, and under special conditions, also the complete optical output of the base station for the IQ return path from the wireless receiver frontends to the base station. Avoiding multiple lasers and fibers for the distribution of the carrier and arbitrary signal from the base station to the frontend, and avoiding the laser diode for the IQ return path from receiver frontends to the base station reduces the hardware effort significantly. Finally, the system architecture allows to integrate all components of the optoelectronic wireless frontend in a single chip using silicon photonics technology. AU - Kruse, Stephan AU - Kneuper, Pascal AU - Schwabe, Tobias AU - Meinecke, Marc-Michael AU - Kurz, Heiko G. AU - Scheytt, J. Christoph ID - 42800 TI - Distributed System Architecture for Software-Defined Radio / Radar with Optical Signal Distribution ER - TY - JOUR AU - Kruse, Stephan AU - Greitens, Jan C. AU - Schwabe, Tobias AU - Kneuper, Pascal AU - Kurz, Heiko G. AU - Scheytt, J. Christoph ID - 47126 JF - IEEE Microwave and Wireless Technology Letters TI - A Narrowband Four-Quadrant Electro-Optical Mixer for Microwave Photonics ER -