TY - JOUR AU - Schall, Christoph Wilhelm Theodor AU - Schöppner, Volker ID - 29947 IS - 3 JF - Polymer Engineering and Science KW - Computing Resources Provided by the Paderborn Center for Parallel Computing TI - Measurement of material degradation in dependence of shear rate, temperature, and residence time VL - 62 ER - TY - JOUR AB - The presented paper aims to characterize the damage and fracture behavior of HX340LAD Micro-Alloyed steels using small punch test. Variations with respect to punch geometries and cutting clearance are made to describe the damage behavior of the material under different loading conditions. Experimental investigations are conducted to identify the crack initiation in the specimens. Furthermore, the numerical FEM simulations are performed to identify the stress state at crack initiation. It is shown that different stress states from shear to biaxial tension can be achieved by changing the geometries of punch and varying the cutting clearance. Moreover, it is presented how changing the configurations can influence the stress state variables: Triaxiality and lode angle parameter. AU - Otroshi, Mortaza AU - Meschut, Gerson ID - 27186 IS - c JF - Engineering Failure Analysis KW - Ductile damage KW - stress state KW - small punch test KW - triaxiality KW - lode angle parameter SN - 1350-6307 TI - Influence of cutting clearance and punch geometry on the stress state in small punch test VL - 136 ER - TY - CONF AU - Chudalla, Nick AU - Teutenberg, Dominik AU - Meschut, Gerson AU - Schneider, Miriam AU - Smart, Dominik ID - 30004 T2 - 22. Kolloquium: Gemeinsame Forschung in der Klebtechnik TI - Systematisierung einer rechnergestützten Auswertemethode zur Versagensanalyse geklebter Verbindungen ER - TY - JOUR AU - Reineke Matsudo, Bernhard AU - Sain, Basudeb AU - Carletti, Luca AU - Zhang, Xue AU - Gao, Wenlong AU - Angelis, Costantino AU - Huang, Lingling AU - Zentgraf, Thomas ID - 29902 IS - 12 JF - Advanced Science KW - General Physics and Astronomy KW - General Engineering KW - Biochemistry KW - Genetics and Molecular Biology (miscellaneous) KW - General Materials Science KW - General Chemical Engineering KW - Medicine (miscellaneous) SN - 2198-3844 TI - Efficient Frequency Conversion with Geometric Phase Control in Optical Metasurfaces VL - 9 ER - TY - JOUR AU - Vorderbrüggen, Julian AU - Köhler, Daniel AU - Grüber, Bernd AU - Troschitz, Juliane AU - Gude, Maik AU - Meschut, Gerson ID - 30911 JF - Composite Structures KW - Civil and Structural Engineering KW - Ceramics and Composites SN - 0263-8223 TI - Development of a rivet geometry for solid self-piercing riveting of thermally loaded CFRP-metal joints in automotive construction VL - 291 ER - TY - JOUR AB - The process chain for the manufacturing of sheet metal components in mass production includes various cutting and forming operations, which influence the resulting properties of the parts and therefore subsequent manufacturing steps, such as clamping and joining. It is shown that clamping of the components leads to superimposed residual stresses and geometry changes. Therefore, the part properties differ from the initial state of the semifinished products, which has to be considered in the design of clinched joints. This paper presents an approach for coupled determination of the properties of semifinished and finished parts during deep drawing and clamping as well as their effects on the joint quality during clinching. One method for the effective and efficient determination of the properties of semifinished products and components during production is using process data from the preceding manufacturing processes, which is concretely presented in this work. In addition to the interconnection of the entire production chain, it is necessary to define relevant process data for each individual manufacturing step and to correlate the data with the material properties reliably. Therefore, the cross-process interactions of different steps of the process chain for the manufacturing of sheet metal components and the effect of process variations on subsequent manufacturing steps are investigated. Consequently, the boundary conditions for a mechanical joining process based on data from preceding process steps can be predicted. AU - Heyser, Per AU - Wiesenmayer, S AU - Frey, P AU - Nehls, T AU - Scharr, C AU - Flügge, W AU - Merklein, M AU - Meschut, Gerson ID - 30904 JF - Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications KW - Mechanical Engineering KW - General Materials Science SN - 1464-4207 TI - Consideration of the manufacturing history of sheet metal components for the adaptation of a clinching process ER - TY - CHAP AU - Yigitbas, Enes AU - Sauer, Stefan AU - Engels, Gregor ED - Vogel-Heuser, Birgit ED - Wimmer, Manuel ID - 29928 T2 - Digital Transformation: Core Technologies and Emerging Topics from a Computer Science Perspective TI - Self-Adaptive Digital Assistance Systems for Work 4.0 ER - TY - JOUR AU - Gao, Wenlong AU - Sain, Basudeb AU - Zentgraf, Thomas ID - 30964 IS - 4 JF - Physical Review Applied KW - General Physics and Astronomy SN - 2331-7019 TI - Spin-Orbit Interaction of Light Enabled by Negative Coupling in High-Quality-Factor Optical Metasurfaces VL - 17 ER - TY - JOUR AB - We study output reference tracking of systems with high relative degree via output feedback only; this is, tracking where the output derivatives are unknown. To this end, we prove that the conjunction of the funnel pre-compensator with a minimum phase system of arbitrary relative degree yields a system of the same relative degree which is minimum phase as well. The error between the original system's output and the pre-compensator's output evolves within a prescribed performance funnel; and moreover, the derivatives of the funnel pre-compensator's output are known explicitly. Therefore, output reference tracking with prescribed transient behavior of the tracking error is possible without knowledge of the derivatives of the original system's output; via funnel control schemes for instance. AU - Lanza, Lukas Johannes ID - 23398 JF - Mathematics of Control, Signals, and Systems TI - Output feedback control with prescribed performance via funnel pre-compensator ER - TY - CONF AU - Hansmeier, Tim AU - Platzner, Marco ID - 30971 SN - 0302-9743 T2 - Applications of Evolutionary Computation, EvoApplications 2022, Proceedings TI - Integrating Safety Guarantees into the Learning Classifier System XCS VL - 13224 ER - TY - JOUR AU - Chudalla, Nick AU - Meschut, Gerson AU - Bartley, Aurélie AU - Wibbeke, Tim Michael ID - 30915 IS - 4 JF - adhäsion KLEBEN & DICHTEN KW - Polymers and Plastics KW - General Chemical Engineering KW - General Chemistry SN - 1619-1919 TI - Bauteilschonendes Entfügen struktureller Klebverbindungen durch Kälte VL - 66 ER - TY - JOUR AU - Feldmann, Michael AU - Padalkin, Andreas AU - Scheideler, Christian AU - Dolev, Shlomi ID - 31060 IS - 4 JF - J. Comput. Biol. TI - Coordinating Amoebots via Reconfigurable Circuits VL - 29 ER - TY - JOUR AU - Xin, Yang AU - Piskunen, Petteri AU - Suma, Antonio AU - Li, Changyong AU - Ijäs, Heini AU - Ojasalo, Sofia AU - Seitz, Iris AU - Kostiainen, Mauri A. AU - Grundmeier, Guido AU - Linko, Veikko AU - Keller, Adrian ID - 30738 JF - Small KW - Biomaterials KW - Biotechnology KW - General Materials Science KW - General Chemistry SN - 1613-6810 TI - Environment‐Dependent Stability and Mechanical Properties of DNA Origami Six‐Helix Bundles with Different Crossover Spacings VL - 18 ER - TY - CONF AU - Wende, Marc AU - Fischer, Florian AU - Kenig, Eugeny ID - 31069 T2 - Jahrestreffen der ProcessNet Fachgruppen Fluidverfahrenstechnik und Hochdruckverfahrenstechnik TI - Experimentelle Untersuchung und Modellvalidierung zur Gravidestillation ER - TY - GEN AU - Hopp, Matthias AU - Tölle, Lisa ID - 31789 T2 - Journal of Applied Polymer Science TI - Influence of process parameters on the formation of inhalable fiber dust during shredding for mechanical recycling of fiber‐reinforced organo sheets ER - TY - GEN AU - Hopp, Matthias AU - Tölle, Lisa AU - Bünger, J. AU - Westphal, G. AU - Rosenkranz, N. AU - Monsé, C. ID - 31788 T2 - Kunststoffe international TI - Fiber Dust Formation during the Recycling of FRP ER - TY - GEN AU - Hopp, Matthias AU - Tölle, Lisa AU - Bünger, J. AU - Westphal, G. AU - Rosenkranz, N. AU - Monsé, C. ID - 31787 T2 - Kunststoffe TI - Faserstäube beim FVK-Recycling ER - TY - JOUR AB - Encrypting data before sending it to the cloud ensures data confidentiality but requires the cloud to compute on encrypted data. Trusted execution environments, such as Intel SGX enclaves, promise to provide a secure environment in which data can be decrypted and then processed. However, vulnerabilities in the executed program give attackers ample opportunities to execute arbitrary code inside the enclave. This code can modify the dataflow of the program and leak secrets via SGX side channels. Fully homomorphic encryption would be an alternative to compute on encrypted data without data leaks. However, due to its high computational complexity, its applicability to general-purpose computing remains limited. Researchers have made several proposals for transforming programs to perform encrypted computations on less powerful encryption schemes. Yet current approaches do not support programs making control-flow decisions based on encrypted data. We introduce the concept of dataflow authentication (DFAuth) to enable such programs. DFAuth prevents an adversary from arbitrarily deviating from the dataflow of a program. Our technique hence offers protections against the side-channel attacks described previously. We implemented two flavors of DFAuth, a Java bytecode-to-bytecode compiler, and an SGX enclave running a small and program-independent trusted code base. We applied DFAuth to a neural network performing machine learning on sensitive medical data and a smart charging scheduler for electric vehicles. Our transformation yields a neural network with encrypted weights, which can be evaluated on encrypted inputs in \( 12.55 \,\mathrm{m}\mathrm{s} \) . Our protected scheduler is capable of updating the encrypted charging plan in approximately 1.06 seconds. AU - Fischer, Andreas AU - Fuhry, Benny AU - Kußmaul, Jörn AU - Janneck, Jonas AU - Kerschbaum, Florian AU - Bodden, Eric ID - 31844 IS - 3 JF - ACM Transactions on Privacy and Security KW - Safety KW - Risk KW - Reliability and Quality KW - General Computer Science SN - 2471-2566 TI - Computation on Encrypted Data Using Dataflow Authentication VL - 25 ER - TY - JOUR AU - Stöckmann, Nico ID - 31327 IS - 01 JF - Theoretical Economics Letters SN - 2162-2078 TI - Conditional Beta-Convergence by Gravity VL - 12 ER - TY - GEN AU - Hillebrandt, Henning ID - 31947 TI - Verteiltes Berechnen kompakter Routingtabellen in Unit Disk Graphen ER -