TY - JOUR AB - The mechanical properties of joined structures are determined considerably by the chosen joining technology. With the aim of providing a method that enables a faster and more profound decision-making in the spatial distribution of joining points during product development, a new method for the load path analysis of joining points is presented. For an exemplary car body, the load type in the joining elements, i.e. pure tensile, shear and combined tensile-shear loads, is determined using finite element analysis (FEA). Based on the evaluated loads, the resulting load paths in selected joining points are analyzed using a 2D FE-model of a clinching point. State of the art methods for load path analysis are dependent on the selected coordinate system or the existing stress state. Thus, a general statement about the load transmission path is not possible at this time. Here, a novel method for the analysis of load paths is used, which is independent of the alignment of the analyzed geometry. The basic assumption of the new load path analysis method was confirmed by using a simple specimen with a square hole in different orientations. The results presented here show a possibility to display the load transmission path invariantly. In further steps, the method will be extended for 3D analysis and the investigation of more complex assemblies. The primary goal of this methodical approach is an even load distribution over the joining elements and the component. This will provide a basis for future design approaches aimed at reducing the number of joining elements in joined structures. AU - Steinfelder, Christian AU - Martin, Sven AU - Brosius, Alexander AU - Tröster, Thomas ID - 24541 JF - Key Engineering Materials SN - 1662-9795 TI - Load Path Transmission in Joining Elements ER - TY - JOUR AU - Martin, Sven AU - Tröster, Thomas ID - 24548 JF - ESAFORM 2021 TI - Joint point loadings in car bodies – the influence of manufacturing tolerances and scatter in material properties ER - TY - CONF AU - Stallmeister, Tim AU - Martin, Sven AU - Marten, Thorsten AU - Tröster, Thomas ID - 26994 TI - Experimental investigation on lightweight potentials of fiber-metal-laminates for automotive battery cases ER - TY - CONF AU - Dörner, Marius AU - Schöppner, Volker ID - 23835 T2 - ANTEC 21 TI - Development of an Analytical Mathematical Modelling Approach for a More Precise Description of Disperse Melting in Solid Bed Breaking Screw Concepts ER - TY - JOUR AU - Moritzer, Elmar AU - Richters, Maximilian ID - 31769 IS - 12 JF - Journal of Composites Science SN - 2504-477X TI - Injection Molding of Wood-Filled Thermoplastic Polyurethane ER - TY - JOUR AU - Moritzer, Elmar AU - Krassmann, Dimitri ID - 31757 JF - Welding in the World TI - Development of a new joining technology for hybrid joints of sheet metal and continuous fiber-reinforced thermoplastics ER - TY - CONF AU - Rozo Vasquez, Julian AU - Arian, Bahman AU - Riepold, Markus AU - Walther, Frank AU - Homberg, Werner AU - Trächtler, Ansgar ID - 30297 T2 - Proceedings of the 11th International Work­shop NDT in Progress TI - Magnetic Barkhausen noise analysis for microstructural effects separation during flow forming of metastable austenite 304L. ER - TY - CONF AB - One of the main objectives of production engineering is to reproducibly manufacture (complex) defect-free parts. To achieve this, it is necessary to employ an appropriate process or tool design. While this will generally prove successful, it cannot, however, offset stochastic defects with local variations in material properties. Closed-loop process control represents a promising approach for a solution in this context. The state of the art involves using this approach to control geometric parameters such as a length. So far, no research or applications have been conducted with closed-loop control for microstructure and product properties. In the project on which this paper is based, the local martensite content of parts is to be adjusted in a highly precise and reproducible manner. The forming process employed is a special, property-controlled flow-forming process. A model-based controller is thus to generate corresponding correction values for the tool-path geometry and tool-path velocity on the basis of online martensite content measurements. For the controller model, it is planned to use a special process or microstructure (correlation) model. The planned paper not only describes the experimental setup but also presents results of initial experimental investigations for subsequent use in the closed-loop control of α’-martensite content during flow-forming. AU - Arian, Bahman AU - Homberg, Werner AU - Riepold, Markus AU - Trächtler, Ansgar AU - Rozo Vasquez, Julian AU - Walther, Frank ID - 23465 KW - Flow-forming KW - Spinning KW - Process Strategy KW - Martensite Content KW - Property Control KW - Micromagnetic Measurement KW - Metastable Austenitic Stainless Steel SN - 978-2-87019-302-0 TI - Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming ER - TY - CHAP AU - Ahrens, Stephan ED - Jakob, Reinhard ID - 44367 T2 - Lichtspiele. Kino und Film im Brucker Land von den Anfängen bis zum Siegeszug des Fernsehens. TI - Francesco (Franz) Stefani - Ein Regisseur mit barocken Anklägen. ER - TY - JOUR AB - AbstractIn child–robot interaction (cHRI) research, many studies pursue the goal to develop interactive systems that can be applied in everyday settings. For early education, increasingly, the setting of a kindergarten is targeted. However, when cHRI and research are brought into a kindergarten, a range of ethical and related procedural aspects have to be considered and dealt with. While ethical models elaborated within other human–robot interaction settings, e.g., assisted living contexts, can provide some important indicators for relevant issues, we argue that it is important to start developing a systematic approach to identify and tackle those ethical issues which rise with cHRI in kindergarten settings on a more global level and address the impact of the technology from a macroperspective beyond the effects on the individual. Based on our experience in conducting studies with children in general and pedagogical considerations on the role of the institution of kindergarten in specific, in this paper, we enfold some relevant aspects that have barely been addressed in an explicit way in current cHRI research. Four areas are analyzed and key ethical issues are identified in each area: (1) the institutional setting of a kindergarten, (2) children as a vulnerable group, (3) the caregivers’ role, and (4) pedagogical concepts. With our considerations, we aim at (i) broadening the methodology of the current studies within the area of cHRI, (ii) revalidate it based on our comprehensive empirical experience with research in kindergarten settings, both laboratory and real-world contexts, and (iii) provide a framework for the development of a more systematic approach to address the ethical issues in cHRI research within kindergarten settings. AU - Tolksdorf, Nils Frederik AU - Siebert, Scarlet AU - Zorn, Isabel AU - Horwath, Ilona AU - Rohlfing, Katharina J. ID - 24901 JF - International Journal of Social Robotics SN - 1875-4791 TI - Ethical Considerations of Applying Robots in Kindergarten Settings: Towards an Approach from a Macroperspective ER -