TY - GEN AU - Banh, Ngoc Chi AU - Scharlau, Ingrid ID - 53069 TI - Effects of task difficulty on visual processing speed ER - TY - GEN AU - Bablitzka, Nico Janosch AU - Beimdiek, Janis ID - 51724 TI - Einfluss von Temperatur und Strömungsführung auf die NH3-SCO sowie die NH3-SCR mit Partikeln aus einer Sprayflammensynthese ER - TY - JOUR AB - Due to the hydrolytic instability of LiPF6 in carbonate-based solvents, HF is a typical impurity in Li-ion battery electrolytes. HF significantly influences the performance of Li-ion batteries, for example by impacting the formation of the solid electrolyte interphase at the anode and by affecting transition metal dissolution at the cathode. Additionally, HF complicates studying fundamental interfacial electrochemistry of Li-ion battery electrolytes, such as direct anion reduction, because it is electrocatalytically relatively unstable, resulting in LiF passivation layers. Methods to selectively remove ppm levels of HF from LiPF6-containing carbonate-based electrolytes are limited. We introduce and benchmark a simple yet efficient electrochemical in situ method to selectively remove ppm amounts of HF from LiPF6-containing carbonate-based electrolytes. The basic idea is the application of a suitable potential to a high surface-area metallic electrode upon which only HF reacts (electrocatalytically) while all other electrolyte components are unaffected under the respective conditions. AU - Ge, Xiaokun AU - Huck, Marten AU - Kuhlmann, Andreas AU - Tiemann, Michael AU - Weinberger, Christian AU - Xu, Xiaodan AU - Zhao, Zhenyu AU - Steinrueck, Hans-Georg ID - 52372 JF - Journal of The Electrochemical Society KW - Materials Chemistry KW - Electrochemistry KW - Surfaces KW - Coatings and Films KW - Condensed Matter Physics KW - Renewable Energy KW - Sustainability and the Environment KW - Electronic KW - Optical and Magnetic Materials SN - 0013-4651 TI - Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes VL - 171 ER - TY - JOUR AB - Ferroelectric domain wall (DW) conductivity (DWC) can be attributed to two separate mechanisms: (a) the injection/ejection of charge carriers across the Schottky barrier formed at the (metal-)electrode-DW junction and (b) the transport of those charge carriers along the DW. Current-voltage (I-U) characteristics, recorded at variable temperatures from LiNbO3 (LNO) DWs, are clearly able to differentiate between these two contributions. Practically, they allow us to directly quantify the physical parameters relevant to the two mechanisms (a) and (b) mentioned above. These are, for example, the resistance of the DW, the saturation current, the ideality factor, and the Schottky barrier height of the electrode-DW junction. Furthermore, the activation energies needed to initiate the thermally activated electronic transport along the DWs can be extracted. In addition, we show that electronic transport along LNO DWs can be elegantly viewed and interpreted in an adapted semiconductor picture based on a double-diode, double-resistor equivalent-circuit model, the R2D2 model. Finally, our R2D2 model was checked for its universality by successfully fitting the I-U curves of not only z-cut LNO bulk DWs, but equally of z-cut thin-film LNO DWs, and of x-cut thin-film DWs as reported in literature. AU - Zahn, Manuel AU - Beyreuther, Elke AU - Kiseleva, Iuliia AU - Lotfy, Ahmed Samir AU - McCluskey, Conor J. AU - Maguire, Jesi R. AU - Suna, Ahmet AU - Rüsing, Michael AU - Gregg, J. Marty AU - Eng, Lukas M. ID - 51156 IS - 2 JF - Physical Review Applied KW - General Physics and Astronomy SN - 2331-7019 TI - Equivalent-circuit model that quantitatively describes domain-wall conductivity in ferroelectric lithium VL - 21 ER - TY - JOUR AU - Buyken, Anette AU - Libuda, Lars ID - 52712 JF - DGEwissen TI - Ernährung und Alltagsbewältigung - Ein Spannungsfeld für Individuum, Haushalt und Gesellschaft ER - TY - BOOK ED - Meyer zu Hörste-Bührer, Raphaela J. ED - Zimmermann, Ruben ED - Erbele-Küster, Dorothea ED - Roth, Michael ED - Volp, Ulrich ID - 51113 TI - Ethik der Zeit - Zeiten der Ethik VL - 14 ER - TY - JOUR AU - Bodden, Eric AU - Pottebaum, Jens AU - Fockel, Markus AU - Gräßler, Iris ID - 52587 IS - 1 JF - IEEE Security & Privacy KW - Law KW - Electrical and Electronic Engineering KW - Computer Networks and Communications SN - 1540-7993 TI - Evaluating Security Through Isolation and Defense in Depth VL - 22 ER - TY - GEN AB - Estimating the infection risks in indoor environments comprises the assessment of the behavior of virus-laden aerosols, i.e. spreading, mixing, removal by air purifiers etc. A promising experimental approach is based on using non-hazardous surrogate aerosols of similar size, e.g. salt particles, to mimic the virus aerosol behavior. This manuscript addresses the issue how a successful transfer of such experiments can be accomplished. Corresponding experiments in two very different environments, a large community hall and a seminar room, with optional use of air purifiers in various constellations were conducted. While high particle concentrations are advantageous in terms of avoiding influence of background aerosol concentrations, it is shown that appropriate consideration of aggregation and settling are vital to theoretically describe the experimentally determined course of particle concentrations. A corresponding model equation for a well-mixed situation is derived and the required parameters are thoroughly determined in separate experiments independently. It is demonstrated that clean air delivery rates (CADR) of air purifiers determined with this approach may differ substantially from common approaches not explicitly taking into account aggregation. AU - Beimdiek, Janis AU - Schmid, Hans-Joachim ID - 51731 KW - surrogate aerosols KW - indoor air cleaners KW - ultra-fine particles KW - COVID-19 KW - test method KW - field experiments: clean air delivery rate T2 - Atmosphere TI - Evaluation of Surrogate Aerosol Experiments to Predict Spreading and Removal of Virus-Laden Aerosols ER - TY - JOUR AU - Beimdiek, Janis AU - Schmid, Hans-Joachim ID - 52357 IS - 3 JF - Atmosphere KW - surrogate aerosols KW - indoor air cleaners KW - ultra-fine particles KW - COVID-19 KW - test method KW - field experiments: clean air delivery rate SN - 2073-4433 TI - Evaluation of Surrogate Aerosol Experiments to Predict Spreading and Removal of Virus-Laden Aerosols VL - 15 ER - TY - CONF AU - Knickenberg, Margarita AU - Zurbriggen, Carmen ID - 50972 TI - Examining aspects of students’ current academic motivation in relation to peer interactions and social environment in the classroom using the Experience sampling method. ER - TY - JOUR AU - Hami Dindar, Iman AU - Mirzaei, Mona AU - Baumhögger, Elmar AU - Lutters, Nicole AU - Kenig, Eugeny Y. ID - 52097 JF - Journal of Chemical & Engineering Data KW - General Chemical Engineering KW - General Chemistry SN - 0021-9568 TI - Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data ER - TY - JOUR AB - AbstractPolycarbonate (PC) is an amorphous polymer that is an extremely robust material with a high tenacity, and thus suitable for a lightweight construction with glass‐like transparency. Due to these advantageous properties, PC is often used in industry for example in medical devices, automotive headlamps, sporting equipment, electronics, and a variety of other products. PC is often subjected to uniaxial and biaxial loading conditions. Therefore, reliable material models have to take into account the various resulting experimental effects. For those reasons, we investigate PC specimens under uniaxial and biaxial loading by using different stretch rates and loading scenarios. In addition to that, we propose methods for optical measurement of local stretches to obtain the approximated local true stress. In future work, the displacement fields and the resulting reaction forces will be used for parameter identification of constitutive equations. AU - Hamdoun, Ayoub AU - Mahnken, Rolf ID - 52217 JF - PAMM KW - Electrical and Electronic Engineering KW - Atomic and Molecular Physics KW - and Optics SN - 1617-7061 TI - Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements ER - TY - GEN AU - Gröger, Benjamin AU - Wiebicke, Felix AU - Koch, Ilja AU - Gude, Maik AU - Gilich, Julian AU - Meschut, Gerson ID - 52537 T2 - 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik TI - Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen im Fertigungsprozess ER - TY - GEN AU - Franke, Patrick ID - 52504 TI - Experimentelle Untersuchung und Modellierung des flüssigseitigen Stofftransports in Anstaupackungen ER - TY - CONF AB - Digital Servitization is one of the significant trends affecting the manufacturing industry. Companies try to tackle challenges regarding their differentiation and profitability using digital services. One specific type of digital services are smart services, which are digital services built on data from smart products. Introducing these kinds of offerings into the portfolio of manufacturing companies is not trivial. Moreover, they require conscious action to align all relevant capabilities to realize the respective business goals. However, what capabilities are generally relevant for smart services remains opaque. We conducted a systematic literature review to identify them and extended the results through an interview study. Our analysis results in 78 capabilities clustered among 12 principles and six dimensions. These results provide significant support for the smart service transformation of manufacturing companies and for structuring the research field of smart services. AU - Koldewey, Christian AU - Fichtler, Timm AU - Scholtysik, Michel AU - Biehler, Jan AU - Schreiner, Nick AU - Sommer, Franziska AU - Schacht, Maximilian AU - Kaufmann, Jonas AU - Rabe, Martin AU - Sedlmeier, Joachim AU - Dumitrescu, Roman ID - 48632 KW - Digital Servitization KW - Transformation KW - Capabilities KW - Maturity KW - Smart Services TI - Exploring Capabilities for the Smart Service Transformation in Manufacturing: Insights from Theory and Practice ER - TY - GEN AB - We rigorously derive novel and sharp finite-data error bounds for highly sample-efficient Extended Dynamic Mode Decomposition (EDMD) for both i.i.d. and ergodic sampling. In particular, we show all results in a very general setting removing most of the typically imposed assumptions such that, among others, discrete- and continuous-time stochastic processes as well as nonlinear partial differential equations are contained in the considered system class. Besides showing an exponential rate for i.i.d. sampling, we prove, to the best of our knowledge, the first superlinear convergence rates for ergodic sampling of deterministic systems. We verify sharpness of the derived error bounds by conducting numerical simulations for highly-complex applications from molecular dynamics and chaotic flame propagation. AU - Philipp, Friedrich M. AU - Schaller, Manuel AU - Boshoff, Septimus AU - Peitz, Sebastian AU - Nüske, Feliks AU - Worthmann, Karl ID - 51160 T2 - arXiv:2402.02494 TI - Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency ER - TY - JOUR AU - Moretto, Giordano AU - Schnell, Nicolas AU - Frey, Jonathan AU - Karakaya, Yasin AU - Amstutz, Alois AU - Diehl, Moritz AU - Kasper, Tina AU - Onder, Christopher ID - 50841 JF - Control Engineering Practice TI - Fast model-based calibration of multiple injections for a CI engine using nonlinear optimal control VL - 145 ER - TY - JOUR AB - We derive efficient algorithms to compute weakly Pareto optimal solutions for smooth, convex and unconstrained multiobjective optimization problems in general Hilbert spaces. To this end, we define a novel inertial gradient-like dynamical system in the multiobjective setting, which trajectories converge weakly to Pareto optimal solutions. Discretization of this system yields an inertial multiobjective algorithm which generates sequences that converge weakly to Pareto optimal solutions. We employ Nesterov acceleration to define an algorithm with an improved convergence rate compared to the plain multiobjective steepest descent method (Algorithm 1). A further improvement in terms of efficiency is achieved by avoiding the solution of a quadratic subproblem to compute a common step direction for all objective functions, which is usually required in first-order methods. Using a different discretization of our inertial gradient-like dynamical system, we obtain an accelerated multiobjective gradient method that does not require the solution of a subproblem in each step (Algorithm 2). While this algorithm does not converge in general, it yields good results on test problems while being faster than standard steepest descent. AU - Sonntag, Konstantin AU - Peitz, Sebastian ID - 46019 JF - Journal of Optimization Theory and Applications TI - Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems ER - TY - GEN AB - We prove Feynman-Kac formulas for the semigroups generated by selfadjoint operators in a class containing Fr\"ohlich Hamiltonians known from solid state physics. The latter model multi-polarons, i.e., a fixed number of quantum mechanical electrons moving in a polarizable crystal and interacting with the quantized phonon field generated by the crystal's vibrational modes. Both the electrons and phonons can be confined to suitable open subsets of Euclidean space. We also include possibly very singular magnetic vector potentials and electrostatic potentials. Our Feynman-Kac formulas comprise Fock space operator-valued multiplicative functionals and can be applied to every vector in the underlying Hilbert space. In comparison to the renormalized Nelson model, for which analogous Feynman-Kac formulas are known, the analysis of the creation and annihilation terms in the multiplicative functionals requires novel ideas to overcome difficulties caused by the phonon dispersion relation being constant. Getting these terms under control and generalizing other construction steps so as to cover confined systems are the main achievements of this article. AU - Hinrichs, Benjamin AU - Matte, Oliver ID - 52691 T2 - arXiv:2403.12147 TI - Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians in magnetic fields and on general domains ER - TY - BOOK ED - Adelmann, Ralf ED - Matzner, Tobias ED - Miggelbrink, Monique ED - Schulz, Christian ID - 51764 TI - Filter – Medienwissenschaftliche Symposien der DFG ER - TY - JOUR AB - In der Professionalisierung von Lehrkräften ist die Selbst-reflexion eine wesentliche Voraussetzung, da sie zentral für die Weiterentwicklung der eigenen Kompetenzen ist. Daraus ergibt sich die Notwendigkeit, bereits in der ersten Phase der Lehrkräftebildung die Selbstreflexion und die Weiterentwicklungsorientierung zu fördern. Hierzu sind auf Grund des sozialen Settings gezielte reflexionsorientierte Workshops chancenreich. Um die Effekte von reflexionsorientierten Workshops und dabei den Zusammenhang zwischen der Selbst-reflexion und der Weiterentwicklungsorientierung zu überprüfen, wurden anhand einer Stichprobe von N = 646 Lehramtsstudierenden die Entwicklung der Selbst-reflexion und Weiterentwicklungsorientierung beim Besuch von Workshops zu überfachlichen Kompetenzen untersucht. Die Datenerhebung erfolgte vor, direkt nach und erneut vier bis sechs Wochen nach den reflexionsorientierten Workshops mittels eines Fragebogens. Durch Varianzanalysen können in Bezug auf die Selbst-reflexion direkt nach den Workshops signifikante Effekte sowie eine konstante Ausprägung vier bis sechs Wochen später nachgewiesen werden. Weiterhin konnte ein signifikanter Anstieg bei der Weiterentwicklungsorientierung über die drei Messzeitpunkte verzeichnet werden. Ebenso zeigte sich ein positiver Effekt der Selbstreflexion auf den Anstieg der Weiterentwicklungsorientierung. AU - Kleine, Sabrina M AU - Sohlau, Sylvia AU - Seifert, Andreas AU - Buhl, Heike M. ID - 52328 IS - 1 JF - Herausforderung Lehrer*innenbildung - Zeitschrift zur Konzeption, Gestaltung und Diskussion TI - Förderung der Selbstreflexion und Weiterentwicklungsorientierung durch reflexionsorientierte Workshops im Lehramtsstudium VL - 7 ER - TY - GEN AU - Peckhaus, Volker ID - 37062 T2 - Neue Deutsche Biographie Deutschland Online TI - Fraenkel, Abraham A. ER - TY - CHAP AU - Foerster, Anne ED - Quaas, Franziska ED - Raum, Theresia ID - 48274 T2 - Emotionen im Krieg - Krieg der Emotionen TI - Freudig in die Schlacht - Emotionen als Codes für die recta intentio im gerechten Krieg (8.- 10. Jahrhundert) ER - TY - JOUR AB - We explore the polarization hysteretic behaviour and field-dependent permittivity of ferroelectric-dielectric 2D materials formed by random dispersions of low permittivity inclusions in a ferroelectric matrix, using finite element simulations. We show how the degree of impenetrability of dielectric inclusions plays a substantial role in controlling the coercive field, remnant and saturation polarizations of the homogenized materials. The results highlight the significance of the degree of impenetrability of inclusion in tuning the effective polarization properties of such ferroelectric composites: coercive field drops significantly as percolation threshold is attained and remnant polarization decreases faster than a linear decay. AU - Myroshnychenko, Viktor AU - Mulavarickal Jose, Pious Mathews AU - Farheen, Henna AU - Ejaz, Shafaq AU - Brosseau, Christian AU - Förstner, Jens ID - 52700 IS - 4 JF - Physica Scripta KW - tet_topic_ferro SN - 0031-8949 TI - From Swiss-cheese to discrete ferroelectric composites: assessing the ferroelectric butterfly shape in polarization loops VL - 99 ER - TY - CONF AU - Hellebrand, Sybille AU - Sadeghi-Kohan, Somayeh AU - Wunderlich, Hans-Joachim ID - 52743 T2 - International Symposium of EDA (ISEDA), Xi'an, China, May 10-13, 2024 TI - Functional Safety and Reliability of Interconnects throughout the Silicon Life Cycle ER - TY - BOOK ED - Hartung, Olaf ID - 48576 SN - 1435-7658 TI - Geschichtskulturen im digitalen Wandel? ER - TY - CHAP AU - Taschl-Erber, Andrea AU - Woppowa, Jan ED - Rothgangel, Martin ED - Simojoki, Henrik ED - Gerber, Christine ED - Michel, Andreas ID - 49813 T2 - Elementare Bibeltexte TI - Gottes Treue zu Israel (Röm 9–11) VL - 2 ER - TY - CHAP AU - Fuchs, Christian ED - Litschka, Michael ED - Paganini, Claudia ED - Rademacher, Lars ID - 51364 SN - 9783748942801 T2 - Digitalisierte Massenkommunikation und Verantwortung TI - Grundlagen einer Ethik des Radikalen Digitalen Humanismus ER - TY - JOUR AB - When it comes to NP, its natural definition, its wide applicability across scientific disciplines, and its timeless relevance, the writing is on the wall: There can be only one. Quantum NP, on the other hand, is clearly the apple that fell far from the tree of NP. Two decades since the first definitions of quantum NP started rolling in, quantum complexity theorists face a stark reality: There's QMA, QCMA, QMA1, QMA(2), StoqMA, and NQP. In this article aimed at a general theoretical computer science audience, I survey these various definitions of quantum NP, their strengths and weaknesses, and why most of them, for better or worse, actually appear to fit naturally into the complexity zoo. AU - Gharibian, Sevag ID - 48544 IS - 4 JF - ACM SIGACT News TI - Guest Column: The 7 faces of quantum NP VL - 54 ER - TY - GEN AU - Elit, Stefan ID - 49713 IS - 4 T2 - ZfdPh TI - Handbuch Poetikvorlesungen. Geschichte – Praktiken – Poetiken, hg. v. Gundela Hachmann, Julia Schöll u. Johanna Bohley, Berlin/Boston 2022 VL - 143 ER - TY - CHAP AU - Ficara, Elena ED - King, Colin ED - Raspa, Venanzio ID - 46203 T2 - Aristotle's Organon in Old and New Logic TI - Hegelian Aristotelianism and the Philosophical Roots of Non-Classical Logics ER - TY - CHAP AU - High , Jeffrey L. AU - Collenberg-González, Carrie ED - Eke, Norbert Otto ID - 51154 T2 - Amsterdamer Beiträge zur neueren Germanistik TI - Heinrich von Kleist. Artistic and Aesthetik Legacies VL - Bd. 96 ER - TY - DATA AB - This is the data set of the project Henze-Digital. It contains project specific authority files (e.g., persons, organizations, places) and editions (e.g., letters, documents). AU - Capelle, Irmlind AU - Minetti, Elena AU - Ried, Dennis AU - Tumat, Antje ID - 51677 TI - HenDi-Data (data package) v3.0.0 ER - TY - DATA AB - This is the data set of the project Henze-Digital. It contains project specific authority files (e.g., persons, organizations, places) and editions (e.g., letters, documents). AU - Ried, Dennis AU - Capelle, Irmlind AU - Minetti, Elena AU - Tumat, Antje ID - 52684 TI - HenDi-Data (data package) v3.1.0 ER - TY - DATA AU - Ried, Dennis AU - Capelle, Irmlind AU - Minetti, Elena ID - 51685 TI - HenDi-ODD v3.0.0 ER - TY - DATA AU - Ried, Dennis AU - Minetti, Elena AU - Capelle, Irmlind ID - 52683 TI - HenDi-ODD v3.1.0 ER - TY - DATA AU - Ried, Dennis ID - 51682 TI - HenDi-WebApp v3.0.0 ER - TY - DATA AU - Ried, Dennis ID - 52685 TI - HenDi-WebApp v3.1.0 ER - TY - CHAP AU - Richter, Susanne ED - Kieslinger, Daniel ED - Owsianowski, Judith ID - 51790 SN - 978-3-7841-3666-0 T2 - Inklusiver Kinderschutz – Anforderungen, Herausforderungen, Perspektiven TI - Herausforderungen in der inklusiven Mädchenarbeit: Begleitforschung der „Inklusiven anonymen Zuflucht“ des Mädchenhaus Bielefeld e.V. ER - TY - THES AU - Richters, Maximilian ID - 51732 TI - Herstellung und Charakterisierung von Wood-Plastic-Composites (WPC) mit einer Matrix aus thermoplastischen Polyurethanen zur Erzeugung einer Holz-WPC-Verbundstruktur ER - TY - JOUR AU - Huybrechts, Yves AU - Schmitz, Sabine ID - 51363 JF - bmgn — Low Countries Historical Review TI - Het verhaal van Vlaanderen. Analyse van het mediaformat en het geschiedverhaal ER - TY - JOUR AB - Heteroclinic structures organize global features of dynamical systems. We analyse whether heteroclinic structures can arise in network dynamics with higher-order interactions which describe the nonlinear interactions between three or more units. We find that while commonly analysed model equations such as network dynamics on undirected hypergraphs may be useful to describe local dynamics such as cluster synchronization, they give rise to obstructions that allow to design of heteroclinic structures in phase space. By contrast, directed hypergraphs break the homogeneity and lead to vector fields that support heteroclinic structures. AU - Bick, Christian AU - von der Gracht, Sören ID - 52726 IS - 2 JF - Journal of Complex Networks KW - Applied Mathematics KW - Computational Mathematics KW - Control and Optimization KW - Management Science and Operations Research KW - Computer Networks and Communications SN - 2051-1329 TI - Heteroclinic dynamics in network dynamical systems with higher-order interactions VL - 12 ER - TY - JOUR AU - Becker, Rieke ID - 36466 IS - 1 JF - Österreichische Zeitschrift für Geschichtswissenschaften. Themenband „New Diplomatic History“ KW - New Diplomatic History KW - Neue Diplomatiegeschichte TI - Hilfst du mir, so hilfst du dir. Diplomatische Überzeugungsstrategien der Regentin Christine Charlotte von Ostfriesland gegenüber Kaiser Leopold I. im 17. Jahrhundert (erscheint 2024) VL - 35 ER - TY - CHAP AU - Hartung, Olaf ED - Hartung, Olaf ED - Krebs, Alexandra ED - Meyer-Hamme, Johannes ID - 50073 SN - 1435-7658 T2 - Geschichtskulturen im digitalen Wandel? TI - Historisches Lernen in einer ‚(Geschichts-)Kultur der Digitalität‘? ER - TY - CONF AU - Sahli Lozano, Caroline AU - Wüthrich, Sergej AU - Kullmann, Harry AU - Knickenberg, Margarita AU - Sharma, Umesh AU - Loreman, Tim AU - Romano, Alessandra AU - Avramidis, Elias AU - Woodcock, Stuart AU - Subban, Pearl ID - 50531 TI - How do attitudes and self-efficacy predict teachers‘ intentions to teach in inclusive classrooms? A cross-national comparison between Canada, Germany, Greece, Italy, and Switzerland. ER - TY - JOUR AU - Lammert, Olesja AU - Richter, Birte AU - Schütze, Christian AU - Thommes, Kirsten AU - Wrede, Britta ID - 52202 JF - Frontiers in Behavioral Economics TI - Humans in XAI: Increased Reliance in Decision-Making Under Uncertainty by Using Explanation Strategies ER - TY - GEN AU - Dorociak, Svitlana ID - 52318 TI - Implementierung eines Algorithmus zur motivbasierten Schnitt-Sparsifizierung ER - TY - CHAP AU - Schulz, Christian ED - Koch, Günter ED - Rottgeri , André ID - 51748 T2 - Populäre Artikulationen – Artikulationen des Populären TI - In Likes We Trust oder die unmögliche Möglichkeit vom Like als Gabe zu sprechen ER - TY - JOUR AB - Resistance spot‐welded joints containing press‐hardened steels are seen to exhibit a fracture mode called total dome failure, where the weld nugget completely separates from one steel sheet along the weld nugget edge. The effect of weld nugget shape and material property gradients is studied based on damage mechanics modeling and experimental validation to shed light on the underlying influencing factors. For a three‐steel‐sheet spot‐welded joint combining DP600 (1.5 mm)–CR1900T (1.0 mm)–CR1900T (1.0 mm), experiments under shear loading reveal that fracture occurs in the DP600 sheet along the weld nugget edge. In subsequent numerical simulation studies with damage mechanics models whose parameters are independently calibrated for every involved material configuration, three variations of the geometrical joint configuration are considered—an approximation of the real joint, one variation with a steeper weld nugget shape, and one variation with a less pronounced gradient between weld nugget material and heat‐affected zone material properties. The results of the finite‐element simulations show that a shallower weld nugget and a more pronounced material gradient lead to a faster increase of plastic strain at the edge of the weld nugget and promote the occurrence of total dome failure. AU - Schuster, Lilia AU - Olfert, Viktoria AU - Sherepenko, Oleksii AU - Fehrenbach, Clemens AU - Song, Shiyuan AU - Hein, David AU - Meschut, Gerson AU - Biro, Elliot AU - Münstermann, Sebastian ID - 50726 JF - steel research international KW - Materials Chemistry KW - Metals and Alloys KW - Physical and Theoretical Chemistry KW - Condensed Matter Physics SN - 1611-3683 TI - Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints ER - TY - JOUR AU - Bathelt, Lukas AU - Djakow, Eugen AU - Henke, Christian AU - Trächtler, Ansgar ID - 52871 JF - Procedia Computer Science KW - General Engineering SN - 1877-0509 TI - Innovative measurement system for saber curvature observation in straightening processes VL - 232 ER -