--- _id: '35947' abstract: - lang: eng text: "The recent trend towards extensive electric mobility leads to a variety of new challenges for the engineering of future vehicle concepts. One particular challenge is the additional weight added to the vehicle by the battery, which stands in direct contrast to the existing customer expectation of a high driving range. The reduction of the total vehicle weight is driven by the extensive use of ultra-high-strength steels in thin sheet thicknesses in car body construction. Resistance spot welding is the dominant joining process in steel-intensive lightweight construction due to its high degree of automation, process reliability and the associated economic efficiency.\r\nIn order to comply limitations of the space in the vehicle body and to ensure the most efficient use of materials in lightweight construction, joints are used that connect several sheets with a single spot weld. This leads to new challenges for the prediction of the load-bearing capacity and failure behaviour under crash loading. \r\nThis paper presents a systematic characterisation of 3 sheet steel joints in order to find formulary, empirical relationships between the load-bearing capacity of the joint and the affecting parameters.\r\nNumerical simulations are carried out in order to clarify the causes of occurring phenomena in experiments. For this purpose, influencing variables such as joint strength, joint arrangement, sheet thickness, sheet strength, load type and load case on the load bearing capacity and failure behaviour are identified.\r\nFurthermore, the extent to which the behaviour of 2-sheet joints can be transferred to 3-sheet joints is investigated. A formulary correlation enables a quick and inexpensive estimates of the load-bearing capacity of 3-sheet metal connections. These models can be used for a computer-efficient simulation of components with three layered spot welded joints." author: - first_name: Viktoria full_name: Olfert, Viktoria id: '5974' last_name: Olfert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: David full_name: Hein, David id: '7728' last_name: Hein - first_name: Lilia full_name: Schuster, Lilia last_name: Schuster - first_name: Silke full_name: Sommer, Silke last_name: Sommer citation: ama: 'Olfert V, Meschut G, Hein D, Schuster L, Sommer S. Development of a crash behaviour prediction method for resistance spot welded 3-steel sheet joints. In: SCT; 2022.' apa: Olfert, V., Meschut, G., Hein, D., Schuster, L., & Sommer, S. (2022). Development of a crash behaviour prediction method for resistance spot welded 3-steel sheet joints. SCT-2022, Mailand. bibtex: '@inproceedings{Olfert_Meschut_Hein_Schuster_Sommer_2022, place={Mailand}, title={Development of a crash behaviour prediction method for resistance spot welded 3-steel sheet joints}, publisher={SCT}, author={Olfert, Viktoria and Meschut, Gerson and Hein, David and Schuster, Lilia and Sommer, Silke}, year={2022} }' chicago: 'Olfert, Viktoria, Gerson Meschut, David Hein, Lilia Schuster, and Silke Sommer. “Development of a Crash Behaviour Prediction Method for Resistance Spot Welded 3-Steel Sheet Joints.” Mailand: SCT, 2022.' ieee: V. Olfert, G. Meschut, D. Hein, L. Schuster, and S. Sommer, “Development of a crash behaviour prediction method for resistance spot welded 3-steel sheet joints,” presented at the SCT-2022, Mailand, 2022. mla: Olfert, Viktoria, et al. Development of a Crash Behaviour Prediction Method for Resistance Spot Welded 3-Steel Sheet Joints. SCT, 2022. short: 'V. Olfert, G. Meschut, D. Hein, L. Schuster, S. Sommer, in: SCT, Mailand, 2022.' conference: end_date: 2022-06-23 location: Mailand name: SCT-2022 start_date: 2022-06-19 date_created: 2023-01-11T09:44:29Z date_updated: 2026-02-23T10:28:10Z language: - iso: eng main_file_link: - url: https://www.sct-2022.com/ place: Mailand publisher: SCT quality_controlled: '1' status: public title: Development of a crash behaviour prediction method for resistance spot welded 3-steel sheet joints type: conference user_id: '7728' year: '2022' ... --- _id: '63829' abstract: - lang: eng text: 'The 3D shear deformation and failure behaviour of a glass fibre reinforced polypropylene in a shear strain rate range of γ˙=2.2×10−4 to 3.4 1s is investigated. An Iosipescu testing setup on a servo-hydraulic high speed testing unit is used to experimentally characterise the in-plane and out-of-plane behaviour utilising three specimen configurations (12-, 13- and 31-direction). The experimental procedure as well as the testing results are presented and discussed. The measured shear stress–shear strain relations indicate a highly nonlinear behaviour and a distinct rate dependency. Two methods are investigated to derive according material characteristics: a classical engineering approach based on moduli and strengths and a data driven approach based on the curve progression. In all cases a Johnson–Cook based formulation is used to describe rate dependency. The analysis methodologies as well as the derived model parameters are described and discussed in detail. It is shown that a phenomenologically enhanced regression can be used to obtain material characteristics for a generalising constitutive model based on the data driven approach.' article_number: '318' article_type: original author: - first_name: Johannes full_name: Gerritzen, Johannes id: '105344' last_name: Gerritzen orcid: 0000-0002-0169-8602 - first_name: Andreas full_name: Hornig, Andreas last_name: Hornig - first_name: Benjamin full_name: Gröger, Benjamin last_name: Gröger - first_name: Maik full_name: Gude, Maik last_name: Gude citation: ama: 'Gerritzen J, Hornig A, Gröger B, Gude M. A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters. Journal of Composites Science. 2022;6(10). doi:10.3390/jcs6100318' apa: 'Gerritzen, J., Hornig, A., Gröger, B., & Gude, M. (2022). A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters. Journal of Composites Science, 6(10), Article 318. https://doi.org/10.3390/jcs6100318' bibtex: '@article{Gerritzen_Hornig_Gröger_Gude_2022, title={A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters}, volume={6}, DOI={10.3390/jcs6100318}, number={10318}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Gerritzen, Johannes and Hornig, Andreas and Gröger, Benjamin and Gude, Maik}, year={2022} }' chicago: 'Gerritzen, Johannes, Andreas Hornig, Benjamin Gröger, and Maik Gude. “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters.” Journal of Composites Science 6, no. 10 (2022). https://doi.org/10.3390/jcs6100318.' ieee: 'J. Gerritzen, A. Hornig, B. Gröger, and M. Gude, “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters,” Journal of Composites Science, vol. 6, no. 10, Art. no. 318, 2022, doi: 10.3390/jcs6100318.' mla: 'Gerritzen, Johannes, et al. “A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters.” Journal of Composites Science, vol. 6, no. 10, 318, MDPI AG, 2022, doi:10.3390/jcs6100318.' short: J. Gerritzen, A. Hornig, B. Gröger, M. Gude, Journal of Composites Science 6 (2022). date_created: 2026-02-02T08:41:00Z date_updated: 2026-02-27T06:47:18Z doi: 10.3390/jcs6100318 intvolume: ' 6' issue: '10' language: - iso: eng project: - _id: '137' name: TRR 285 - Subproject A03 - _id: '131' name: TRR 285 - Project Area A - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Journal of Composites Science publication_identifier: issn: - 2504-477X publication_status: published publisher: MDPI AG status: public title: 'A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling Parameters' type: journal_article user_id: '105344' volume: 6 year: '2022' ... --- _id: '61306' author: - first_name: Ulrike full_name: Heinrichs, Ulrike id: '36964' last_name: Heinrichs - first_name: Martina full_name: Voigt, Martina last_name: Voigt citation: ama: 'Heinrichs U, Voigt M. Die Wissenschaften und Künste unter der Ägide der brandenburgischen Kirche. Die Wandmalereien aus der Zeit Bischof Stephan Bodekers und Probst Peter von Klitzkes in der spätmittelalterlichen Dombibliothek in Brandenburg an der Havel – ein Bildzyklus, zwei Bibliotheksräume. In: Schädler-Saub U, Noll-Minor M, eds. Der Wandmalereizyklus zu den Wissenschaften und Künsten in der Domklausur zu Brandenburg. Interdisziplinäre Erforschung und Visualisierung des fragmentarischen Bestandes. Begleitband zur interdisziplinären Tagung der HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen in Kooperation mit dem BLDAM Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum und dem Domstift Brandenburg, »Nicht invasiv! Neue Perspektiven in der Erforschung und Restaurierung von Wandmalerei dank digitaler Techniken.« 27. bis 30. April 2022 in Brandenburg an der Havel (Schriften des Hornemann Instituts 22/Arbeitshefte des Brandenburgischen Landesamtes für Denkmalpflege und Archäologischen Landesmuseums 65). hendrik Bäßler Verlag; 2022:150-193.' apa: Heinrichs, U., & Voigt, M. (2022). Die Wissenschaften und Künste unter der Ägide der brandenburgischen Kirche. Die Wandmalereien aus der Zeit Bischof Stephan Bodekers und Probst Peter von Klitzkes in der spätmittelalterlichen Dombibliothek in Brandenburg an der Havel – ein Bildzyklus, zwei Bibliotheksräume. In U. Schädler-Saub & M. Noll-Minor (Eds.), Der Wandmalereizyklus zu den Wissenschaften und Künsten in der Domklausur zu Brandenburg. Interdisziplinäre Erforschung und Visualisierung des fragmentarischen Bestandes. Begleitband zur interdisziplinären Tagung der HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen in Kooperation mit dem BLDAM Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum und dem Domstift Brandenburg, »Nicht invasiv! Neue Perspektiven in der Erforschung und Restaurierung von Wandmalerei dank digitaler Techniken.« 27. bis 30. April 2022 in Brandenburg an der Havel (Schriften des Hornemann Instituts 22/Arbeitshefte des Brandenburgischen Landesamtes für Denkmalpflege und Archäologischen Landesmuseums 65) (pp. 150–193). hendrik Bäßler Verlag. bibtex: '@inbook{Heinrichs_Voigt_2022, place={Berlin}, title={Die Wissenschaften und Künste unter der Ägide der brandenburgischen Kirche. Die Wandmalereien aus der Zeit Bischof Stephan Bodekers und Probst Peter von Klitzkes in der spätmittelalterlichen Dombibliothek in Brandenburg an der Havel – ein Bildzyklus, zwei Bibliotheksräume}, booktitle={Der Wandmalereizyklus zu den Wissenschaften und Künsten in der Domklausur zu Brandenburg. Interdisziplinäre Erforschung und Visualisierung des fragmentarischen Bestandes. Begleitband zur interdisziplinären Tagung der HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen in Kooperation mit dem BLDAM Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum und dem Domstift Brandenburg, »Nicht invasiv! Neue Perspektiven in der Erforschung und Restaurierung von Wandmalerei dank digitaler Techniken.« 27. bis 30. April 2022 in Brandenburg an der Havel (Schriften des Hornemann Instituts 22/Arbeitshefte des Brandenburgischen Landesamtes für Denkmalpflege und Archäologischen Landesmuseums 65)}, publisher={hendrik Bäßler Verlag}, author={Heinrichs, Ulrike and Voigt, Martina}, editor={Schädler-Saub, Ursula and Noll-Minor, Mechthild}, year={2022}, pages={150–193} }' chicago: 'Heinrichs, Ulrike, and Martina Voigt. “Die Wissenschaften und Künste unter der Ägide der brandenburgischen Kirche. Die Wandmalereien aus der Zeit Bischof Stephan Bodekers und Probst Peter von Klitzkes in der spätmittelalterlichen Dombibliothek in Brandenburg an der Havel – ein Bildzyklus, zwei Bibliotheksräume.” In Der Wandmalereizyklus zu den Wissenschaften und Künsten in der Domklausur zu Brandenburg. Interdisziplinäre Erforschung und Visualisierung des fragmentarischen Bestandes. Begleitband zur interdisziplinären Tagung der HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen in Kooperation mit dem BLDAM Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum und dem Domstift Brandenburg, »Nicht invasiv! Neue Perspektiven in der Erforschung und Restaurierung von Wandmalerei dank digitaler Techniken.« 27. bis 30. April 2022 in Brandenburg an der Havel (Schriften des Hornemann Instituts 22/Arbeitshefte des Brandenburgischen Landesamtes für Denkmalpflege und Archäologischen Landesmuseums 65), edited by Ursula Schädler-Saub and Mechthild Noll-Minor, 150–93. Berlin: hendrik Bäßler Verlag, 2022.' ieee: 'U. Heinrichs and M. Voigt, “Die Wissenschaften und Künste unter der Ägide der brandenburgischen Kirche. Die Wandmalereien aus der Zeit Bischof Stephan Bodekers und Probst Peter von Klitzkes in der spätmittelalterlichen Dombibliothek in Brandenburg an der Havel – ein Bildzyklus, zwei Bibliotheksräume,” in Der Wandmalereizyklus zu den Wissenschaften und Künsten in der Domklausur zu Brandenburg. Interdisziplinäre Erforschung und Visualisierung des fragmentarischen Bestandes. Begleitband zur interdisziplinären Tagung der HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen in Kooperation mit dem BLDAM Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum und dem Domstift Brandenburg, »Nicht invasiv! Neue Perspektiven in der Erforschung und Restaurierung von Wandmalerei dank digitaler Techniken.« 27. bis 30. April 2022 in Brandenburg an der Havel (Schriften des Hornemann Instituts 22/Arbeitshefte des Brandenburgischen Landesamtes für Denkmalpflege und Archäologischen Landesmuseums 65), U. Schädler-Saub and M. Noll-Minor, Eds. Berlin: hendrik Bäßler Verlag, 2022, pp. 150–193.' mla: Heinrichs, Ulrike, and Martina Voigt. “Die Wissenschaften und Künste unter der Ägide der brandenburgischen Kirche. Die Wandmalereien aus der Zeit Bischof Stephan Bodekers und Probst Peter von Klitzkes in der spätmittelalterlichen Dombibliothek in Brandenburg an der Havel – ein Bildzyklus, zwei Bibliotheksräume.” Der Wandmalereizyklus zu den Wissenschaften und Künsten in der Domklausur zu Brandenburg. Interdisziplinäre Erforschung und Visualisierung des fragmentarischen Bestandes. Begleitband zur interdisziplinären Tagung der HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen in Kooperation mit dem BLDAM Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum und dem Domstift Brandenburg, »Nicht invasiv! Neue Perspektiven in der Erforschung und Restaurierung von Wandmalerei dank digitaler Techniken.« 27. bis 30. April 2022 in Brandenburg an der Havel (Schriften des Hornemann Instituts 22/Arbeitshefte des Brandenburgischen Landesamtes für Denkmalpflege und Archäologischen Landesmuseums 65), edited by Ursula Schädler-Saub and Mechthild Noll-Minor, hendrik Bäßler Verlag, 2022, pp. 150–93. short: 'U. Heinrichs, M. Voigt, in: U. Schädler-Saub, M. Noll-Minor (Eds.), Der Wandmalereizyklus zu den Wissenschaften und Künsten in der Domklausur zu Brandenburg. Interdisziplinäre Erforschung und Visualisierung des fragmentarischen Bestandes. Begleitband zur interdisziplinären Tagung der HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen in Kooperation mit dem BLDAM Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum und dem Domstift Brandenburg, »Nicht invasiv! Neue Perspektiven in der Erforschung und Restaurierung von Wandmalerei dank digitaler Techniken.« 27. bis 30. April 2022 in Brandenburg an der Havel (Schriften des Hornemann Instituts 22/Arbeitshefte des Brandenburgischen Landesamtes für Denkmalpflege und Archäologischen Landesmuseums 65), hendrik Bäßler Verlag, Berlin, 2022, pp. 150–193.' date_created: 2025-09-16T13:18:31Z date_updated: 2025-09-16T13:19:41Z editor: - first_name: Ursula full_name: Schädler-Saub, Ursula last_name: Schädler-Saub - first_name: Mechthild full_name: Noll-Minor, Mechthild last_name: Noll-Minor language: - iso: ger page: 150-193 place: Berlin publication: Der Wandmalereizyklus zu den Wissenschaften und Künsten in der Domklausur zu Brandenburg. Interdisziplinäre Erforschung und Visualisierung des fragmentarischen Bestandes. Begleitband zur interdisziplinären Tagung der HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen in Kooperation mit dem BLDAM Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum und dem Domstift Brandenburg, »Nicht invasiv! Neue Perspektiven in der Erforschung und Restaurierung von Wandmalerei dank digitaler Techniken.« 27. bis 30. April 2022 in Brandenburg an der Havel (Schriften des Hornemann Instituts 22/Arbeitshefte des Brandenburgischen Landesamtes für Denkmalpflege und Archäologischen Landesmuseums 65) publication_status: published publisher: hendrik Bäßler Verlag status: public title: Die Wissenschaften und Künste unter der Ägide der brandenburgischen Kirche. Die Wandmalereien aus der Zeit Bischof Stephan Bodekers und Probst Peter von Klitzkes in der spätmittelalterlichen Dombibliothek in Brandenburg an der Havel – ein Bildzyklus, zwei Bibliotheksräume type: book_chapter user_id: '36964' year: '2022' ... --- _id: '62801' abstract: - lang: eng text: The three-dimensional (3D) distribution of individual atoms on the surface of catalyst nanoparticles plays a vital role in their activity and stability. Optimising the performance of electrocatalysts requires atomic-scale information, but it is difficult to obtain. Here, we use atom probe tomography to elucidate the 3D structure of 10 nm sized Co2FeO4 and CoFe2O4 nanoparticles during oxygen evolution reaction (OER). We reveal nanoscale spinodal decomposition in pristine Co2FeO4. The interfaces of Co-rich and Fe-rich nanodomains of Co2FeO4 become trapping sites for hydroxyl groups, contributing to a higher OER activity compared to that of CoFe2O4. However, the activity of Co2FeO4 drops considerably due to concurrent irreversible transformation towards CoIVO2 and pronounced Fe dissolution. In contrast, there is negligible elemental redistribution for CoFe2O4 after OER, except for surface structural transformation towards (FeIII, CoIII)2O3. Overall, our study provides a unique 3D compositional distribution of mixed Co-Fe spinel oxides, which gives atomic-scale insights into active sites and the deactivation of electrocatalysts during OER. article_number: '179' article_type: original author: - first_name: Weikai full_name: Xiang, Weikai last_name: Xiang - first_name: Nating full_name: Yang, Nating last_name: Yang - first_name: Xiaopeng full_name: Li, Xiaopeng last_name: Li - first_name: Julia full_name: Linnemann, Julia id: '116779' last_name: Linnemann orcid: 0000-0001-6883-5424 - first_name: Ulrich full_name: Hagemann, Ulrich last_name: Hagemann - first_name: Olaf full_name: Ruediger, Olaf last_name: Ruediger - first_name: Markus full_name: Heidelmann, Markus last_name: Heidelmann - first_name: Tobias full_name: Falk, Tobias last_name: Falk - first_name: Matteo full_name: Aramini, Matteo last_name: Aramini - first_name: Serena full_name: DeBeer, Serena last_name: DeBeer - first_name: Martin full_name: Muhler, Martin last_name: Muhler - first_name: Kristina full_name: Tschulik, Kristina last_name: Tschulik - first_name: Tong full_name: Li, Tong last_name: Li citation: ama: Xiang W, Yang N, Li X, et al. 3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction. Nature Communications. 2022;13(1). doi:10.1038/s41467-021-27788-2 apa: Xiang, W., Yang, N., Li, X., Linnemann, J., Hagemann, U., Ruediger, O., Heidelmann, M., Falk, T., Aramini, M., DeBeer, S., Muhler, M., Tschulik, K., & Li, T. (2022). 3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction. Nature Communications, 13(1), Article 179. https://doi.org/10.1038/s41467-021-27788-2 bibtex: '@article{Xiang_Yang_Li_Linnemann_Hagemann_Ruediger_Heidelmann_Falk_Aramini_DeBeer_et al._2022, title={3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction}, volume={13}, DOI={10.1038/s41467-021-27788-2}, number={1179}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Xiang, Weikai and Yang, Nating and Li, Xiaopeng and Linnemann, Julia and Hagemann, Ulrich and Ruediger, Olaf and Heidelmann, Markus and Falk, Tobias and Aramini, Matteo and DeBeer, Serena and et al.}, year={2022} }' chicago: Xiang, Weikai, Nating Yang, Xiaopeng Li, Julia Linnemann, Ulrich Hagemann, Olaf Ruediger, Markus Heidelmann, et al. “3D Atomic-Scale Imaging of Mixed Co-Fe Spinel Oxide Nanoparticles during Oxygen Evolution Reaction.” Nature Communications 13, no. 1 (2022). https://doi.org/10.1038/s41467-021-27788-2. ieee: 'W. Xiang et al., “3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction,” Nature Communications, vol. 13, no. 1, Art. no. 179, 2022, doi: 10.1038/s41467-021-27788-2.' mla: Xiang, Weikai, et al. “3D Atomic-Scale Imaging of Mixed Co-Fe Spinel Oxide Nanoparticles during Oxygen Evolution Reaction.” Nature Communications, vol. 13, no. 1, 179, Springer Science and Business Media LLC, 2022, doi:10.1038/s41467-021-27788-2. short: W. Xiang, N. Yang, X. Li, J. Linnemann, U. Hagemann, O. Ruediger, M. Heidelmann, T. Falk, M. Aramini, S. DeBeer, M. Muhler, K. Tschulik, T. Li, Nature Communications 13 (2022). date_created: 2025-12-03T15:22:16Z date_updated: 2025-12-03T16:30:12Z department: - _id: '985' doi: 10.1038/s41467-021-27788-2 extern: '1' intvolume: ' 13' issue: '1' keyword: - electrocatalysis - oxygen evolution reaction - cobalt spinel - electrochemical impedance spectroscopy language: - iso: eng main_file_link: - open_access: '1' url: https://www.nature.com/articles/s41467-021-27788-2 oa: '1' publication: Nature Communications publication_identifier: issn: - 2041-1723 publication_status: published publisher: Springer Science and Business Media LLC quality_controlled: '1' status: public title: 3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction type: journal_article user_id: '116779' volume: 13 year: '2022' ... --- _id: '30921' abstract: - lang: eng text: Quantum walks function as essential means to implement quantum simulators, allowing one to study complex and often directly inaccessible quantum processes in controllable systems. In this contribution, the notion of a driven Gaussian quantum walk is introduced. In contrast to typically considered quantum walks in optical settings, we describe the operation of the walk in terms of a nonlinear map rather than a unitary operation, e.g., by replacing a beam-splitter-type coin with a two-mode squeezer, being a process that is controlled and driven by a pump field. This opens previously unattainable possibilities for quantum walks that include nonlinear elements as core components of their operation, vastly extending their range of applications. A full framework for driven Gaussian quantum walks is developed, including methods to dynamically characterize nonlinear, quantum, and quantum-nonlinear effects. Moreover, driven Gaussian quantum walks are compared with their classically interfering and linear counterparts, which are based on classical coherence of light rather than quantum superpositions. In particular, the generation and boost of highly multimode entanglement, squeezing, and other quantum effects are studied over the duration of the nonlinear walk. Importantly, we prove the quantumness of the evolution itself, regardless of the input state. A scheme for an experimental realization is proposed. Furthermore, nonlinear properties of driven Gaussian quantum walks are explored, such as amplification that leads to an ever increasing number of correlated quantum particles, constituting a source of new walkers during the walk. Therefore, a concept for quantum walks is proposed that leads to—and even produces—directly accessible quantum phenomena, and that renders the quantum simulation of nonlinear processes possible. article_number: '042210' article_type: original author: - first_name: Philip full_name: Held, Philip id: '68236' last_name: Held - first_name: Melanie full_name: Engelkemeier, Melanie last_name: Engelkemeier - first_name: Syamsundar full_name: De, Syamsundar last_name: De - first_name: Sonja full_name: Barkhofen, Sonja id: '48188' last_name: Barkhofen - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 - first_name: Christine full_name: Silberhorn, Christine id: '26263' last_name: Silberhorn citation: ama: Held P, Engelkemeier M, De S, Barkhofen S, Sperling J, Silberhorn C. Driven Gaussian quantum walks. Physical Review A. 2022;105(4). doi:10.1103/physreva.105.042210 apa: Held, P., Engelkemeier, M., De, S., Barkhofen, S., Sperling, J., & Silberhorn, C. (2022). Driven Gaussian quantum walks. Physical Review A, 105(4), Article 042210. https://doi.org/10.1103/physreva.105.042210 bibtex: '@article{Held_Engelkemeier_De_Barkhofen_Sperling_Silberhorn_2022, title={Driven Gaussian quantum walks}, volume={105}, DOI={10.1103/physreva.105.042210}, number={4042210}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Held, Philip and Engelkemeier, Melanie and De, Syamsundar and Barkhofen, Sonja and Sperling, Jan and Silberhorn, Christine}, year={2022} }' chicago: Held, Philip, Melanie Engelkemeier, Syamsundar De, Sonja Barkhofen, Jan Sperling, and Christine Silberhorn. “Driven Gaussian Quantum Walks.” Physical Review A 105, no. 4 (2022). https://doi.org/10.1103/physreva.105.042210. ieee: 'P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, and C. Silberhorn, “Driven Gaussian quantum walks,” Physical Review A, vol. 105, no. 4, Art. no. 042210, 2022, doi: 10.1103/physreva.105.042210.' mla: Held, Philip, et al. “Driven Gaussian Quantum Walks.” Physical Review A, vol. 105, no. 4, 042210, American Physical Society (APS), 2022, doi:10.1103/physreva.105.042210. short: P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, C. Silberhorn, Physical Review A 105 (2022). date_created: 2022-04-20T06:38:07Z date_updated: 2026-01-09T09:50:22Z department: - _id: '623' - _id: '15' - _id: '170' - _id: '706' - _id: '288' - _id: '230' - _id: '429' - _id: '35' doi: 10.1103/physreva.105.042210 intvolume: ' 105' issue: '4' language: - iso: eng main_file_link: - url: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.105.042210 project: - _id: '56' name: 'TRR 142 - C: TRR 142 - Project Area C' - _id: '53' name: 'TRR 142: TRR 142' publication: Physical Review A publication_identifier: issn: - 2469-9926 - 2469-9934 publication_status: published publisher: American Physical Society (APS) status: public title: Driven Gaussian quantum walks type: journal_article user_id: '68236' volume: 105 year: '2022' ... --- _id: '57068' abstract: - lang: ger text: "Eine der grundlegenden Funktionen von Zeitungstexten ist das Berichten über einen bestimmten\r\nSachverhalt oder ein Ereignis. Diese Berichtshandlungen werden dabei häufig von regelmäßig\r\nwiederkehrenden Sprachhandlungen begleitet, die vor allem der Gewährleistung der Textsorte,\r\nSicherung von Kohärenz des Mediums, Reflektion von Glaubwürdigkeit/Verbürgtheit der Quellen\r\nsowie der Aufforderung zur Meinungsbildung dienen. Diese Nebenprädikationen bleiben stets\r\nerhalten, unabhängig von dem je aktuellen und sich ändernden Nachrichteninhalt.\r\nAusgehend von der Hypothese, dass für standardisierte Sprachhandlungen standardisierte\r\n(formelhafte) sprachliche Realisierungen bestehen oder entwickelt werden, werden für das Korpus\r\nZeitungstexte (Teilkorpus „Manuelle Annotation“ vgl. https://www.uni-\r\npaderborn.de/forschungsprojekte/tevo/projekt/korpora) diese Nebenprädikationen als mögliche\r\nformelhafte Verbindungen manuell annotiert und auf lexikalische, grammatische und/oder\r\nsemantische Muster hin analysiert. Ziel dieses Vorgehens ist, musterhafte (komplexe) Strukturen zu\r\nermitteln und einer (teil-)automatisierten Annotation zuzuführen. Die Validierung der ermittelten\r\nmusterhaften Strukturen erfolgt anhand des Gesamtkorpus der im Projekt digitalisierten\r\nZeitungsausgaben.\r\nNeben der Darstellung dieses Vorgehens und seiner Ergebnisse sollen anhand der aus dem\r\nGesamtkorpus gewonnenen Belege Entwicklungstendenzen aufgezeigt und in ihrem historischen\r\nKontext analysiert werden." author: - first_name: Frauke full_name: Thielert, Frauke last_name: Thielert - first_name: Christopher full_name: Georgi, Christopher id: '78730' last_name: Georgi citation: ama: Thielert F, Georgi C. Formelhafte Sprache in Pressetexten – Von der manuellen Annotation zur (teil-) automatisierten Erfassung komplexer Strukturen. Vortrag im Rahmen des t.evo-Workshops “Von der Oberfläche zum Muster” vom 22.–23.03.2022 in Paderborn.; 2022. apa: Thielert, F., & Georgi, C. (2022). Formelhafte Sprache in Pressetexten – Von der manuellen Annotation zur (teil-) automatisierten Erfassung komplexer Strukturen. Vortrag im Rahmen des t.evo-Workshops “Von der Oberfläche zum Muster” vom 22.–23.03.2022 in Paderborn. bibtex: '@book{Thielert_Georgi_2022, title={Formelhafte Sprache in Pressetexten – Von der manuellen Annotation zur (teil-) automatisierten Erfassung komplexer Strukturen. Vortrag im Rahmen des t.evo-Workshops “Von der Oberfläche zum Muster” vom 22.–23.03.2022 in Paderborn}, author={Thielert, Frauke and Georgi, Christopher}, year={2022} }' chicago: Thielert, Frauke, and Christopher Georgi. Formelhafte Sprache in Pressetexten – Von der manuellen Annotation zur (teil-) automatisierten Erfassung komplexer Strukturen. Vortrag im Rahmen des t.evo-Workshops “Von der Oberfläche zum Muster” vom 22.–23.03.2022 in Paderborn, 2022. ieee: F. Thielert and C. Georgi, Formelhafte Sprache in Pressetexten – Von der manuellen Annotation zur (teil-) automatisierten Erfassung komplexer Strukturen. Vortrag im Rahmen des t.evo-Workshops “Von der Oberfläche zum Muster” vom 22.–23.03.2022 in Paderborn. 2022. mla: Thielert, Frauke, and Christopher Georgi. Formelhafte Sprache in Pressetexten – Von der manuellen Annotation zur (teil-) automatisierten Erfassung komplexer Strukturen. Vortrag im Rahmen des t.evo-Workshops “Von der Oberfläche zum Muster” vom 22.–23.03.2022 in Paderborn. 2022. short: F. Thielert, C. Georgi, Formelhafte Sprache in Pressetexten – Von der manuellen Annotation zur (teil-) automatisierten Erfassung komplexer Strukturen. Vortrag im Rahmen des t.evo-Workshops “Von der Oberfläche zum Muster” vom 22.–23.03.2022 in Paderborn, 2022. date_created: 2024-11-13T15:40:03Z date_updated: 2024-11-13T16:09:59Z department: - _id: '745' language: - iso: ger main_file_link: - open_access: '1' url: https://www.uni-paderborn.de/fileadmin/tevo/images_and_files/Formelhafte_Sprache.pdf oa: '1' project: - _id: '797' name: 't.evo – Die Evolution von komplexen Textmustern: Entwicklung und Anwendung eines korpuslinguistischen Analyseverfahrens zur Erfassung der Mehrdimensionalität des Textmusterwandels' publication_status: published status: public title: Formelhafte Sprache in Pressetexten – Von der manuellen Annotation zur (teil-) automatisierten Erfassung komplexer Strukturen. Vortrag im Rahmen des t.evo-Workshops "Von der Oberfläche zum Muster" vom 22.–23.03.2022 in Paderborn type: misc user_id: '78730' year: '2022' ... --- _id: '33509' abstract: - lang: eng text: In this publication a novel method for far-field prediction from magnetic Huygens box data based on the boundary element method (BEM) is presented. Two examples are considered for the validation of this method. The first example represents an electric dipole so that the obtained calculations can be compared to an analytical solution. As a second example, a printed circuit board is considered and the calculated far-field is compared to a fullwave simulation. In both cases, the calculations for different field integral equations are under comparison, and the results indicate that the presented method performs very well with a combined field integral equation, for the specified problem, when only magnetic Huygens box data is given. author: - first_name: Christoph full_name: Marschalt, Christoph last_name: Marschalt - first_name: Dominik full_name: Schroder, Dominik last_name: Schroder - first_name: Sven full_name: Lange, Sven id: '38240' last_name: Lange orcid: '0009-0007-9150-2266 ' - first_name: Ulrich full_name: Hilleringmann, Ulrich id: '20179' last_name: Hilleringmann - first_name: Christian full_name: Hedayat, Christian last_name: Hedayat - first_name: Harald full_name: Kuhn, Harald last_name: Kuhn - first_name: Denis full_name: Sievers, Denis last_name: Sievers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Marschalt C, Schroder D, Lange S, et al. Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method. In: 2022 Smart Systems Integration (SSI). IEEE; 2022. doi:10.1109/ssi56489.2022.9901431' apa: Marschalt, C., Schroder, D., Lange, S., Hilleringmann, U., Hedayat, C., Kuhn, H., Sievers, D., & Förstner, J. (2022). Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method. 2022 Smart Systems Integration (SSI). 2022 Smart Systems Integration (SSI), Grenoble, France. https://doi.org/10.1109/ssi56489.2022.9901431 bibtex: '@inproceedings{Marschalt_Schroder_Lange_Hilleringmann_Hedayat_Kuhn_Sievers_Förstner_2022, place={Grenoble, France}, title={Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method}, DOI={10.1109/ssi56489.2022.9901431}, booktitle={2022 Smart Systems Integration (SSI)}, publisher={IEEE}, author={Marschalt, Christoph and Schroder, Dominik and Lange, Sven and Hilleringmann, Ulrich and Hedayat, Christian and Kuhn, Harald and Sievers, Denis and Förstner, Jens}, year={2022} }' chicago: 'Marschalt, Christoph, Dominik Schroder, Sven Lange, Ulrich Hilleringmann, Christian Hedayat, Harald Kuhn, Denis Sievers, and Jens Förstner. “Far-Field Calculation from Magnetic Huygens Box Data Using the Boundary Element Method.” In 2022 Smart Systems Integration (SSI). Grenoble, France: IEEE, 2022. https://doi.org/10.1109/ssi56489.2022.9901431.' ieee: 'C. Marschalt et al., “Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method,” presented at the 2022 Smart Systems Integration (SSI), Grenoble, France, 2022, doi: 10.1109/ssi56489.2022.9901431.' mla: Marschalt, Christoph, et al. “Far-Field Calculation from Magnetic Huygens Box Data Using the Boundary Element Method.” 2022 Smart Systems Integration (SSI), IEEE, 2022, doi:10.1109/ssi56489.2022.9901431. short: 'C. Marschalt, D. Schroder, S. Lange, U. Hilleringmann, C. Hedayat, H. Kuhn, D. Sievers, J. Förstner, in: 2022 Smart Systems Integration (SSI), IEEE, Grenoble, France, 2022.' conference: end_date: 2022-04-28 location: Grenoble, France name: 2022 Smart Systems Integration (SSI) start_date: 2022-04-27 date_created: 2022-10-04T11:31:43Z date_updated: 2024-11-30T19:32:14Z department: - _id: '59' - _id: '61' - _id: '485' doi: 10.1109/ssi56489.2022.9901431 keyword: - Near-Field Scanning - Huygens Box - Boundary Element Method - Method of Moments - tet_topic_hf - tet_enas language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/document/9901431 place: Grenoble, France project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: 2022 Smart Systems Integration (SSI) publication_identifier: eisbn: - 978-1-6654-8849-5 publication_status: published publisher: IEEE status: public title: Far-field Calculation from magnetic Huygens Box Data using the Boundary Element Method type: conference user_id: '158' year: '2022' ... --- _id: '47095' author: - first_name: Martin full_name: Kesternich, Martin id: '98922' last_name: Kesternich orcid: 0000-0002-0653-7680 - first_name: Ulrike full_name: Will, Ulrike last_name: Will - first_name: Cornelia full_name: Manger-Nestler, Cornelia last_name: Manger-Nestler citation: ama: Kesternich M, Will U, Manger-Nestler C. Pariser Klimaschutzabkommen – Berichtsstandards Und Begleitanalysen Nationaler Klimaschutzbeiträge Stärken. ZEW Policy Brief 22-04; 2022. apa: Kesternich, M., Will, U., & Manger-Nestler, C. (2022). Pariser Klimaschutzabkommen – Berichtsstandards und Begleitanalysen nationaler Klimaschutzbeiträge stärken. ZEW Policy Brief 22-04. bibtex: '@book{Kesternich_Will_Manger-Nestler_2022, title={Pariser Klimaschutzabkommen – Berichtsstandards und Begleitanalysen nationaler Klimaschutzbeiträge stärken}, publisher={ZEW Policy Brief 22-04}, author={Kesternich, Martin and Will, Ulrike and Manger-Nestler, Cornelia}, year={2022} }' chicago: Kesternich, Martin, Ulrike Will, and Cornelia Manger-Nestler. Pariser Klimaschutzabkommen – Berichtsstandards Und Begleitanalysen Nationaler Klimaschutzbeiträge Stärken. ZEW Policy Brief 22-04, 2022. ieee: M. Kesternich, U. Will, and C. Manger-Nestler, Pariser Klimaschutzabkommen – Berichtsstandards und Begleitanalysen nationaler Klimaschutzbeiträge stärken. ZEW Policy Brief 22-04, 2022. mla: Kesternich, Martin, et al. Pariser Klimaschutzabkommen – Berichtsstandards Und Begleitanalysen Nationaler Klimaschutzbeiträge Stärken. ZEW Policy Brief 22-04, 2022. short: M. Kesternich, U. Will, C. Manger-Nestler, Pariser Klimaschutzabkommen – Berichtsstandards Und Begleitanalysen Nationaler Klimaschutzbeiträge Stärken, ZEW Policy Brief 22-04, 2022. date_created: 2023-09-16T11:58:03Z date_updated: 2024-12-05T16:41:33Z language: - iso: eng publisher: ZEW Policy Brief 22-04 status: public title: Pariser Klimaschutzabkommen – Berichtsstandards und Begleitanalysen nationaler Klimaschutzbeiträge stärken type: working_paper user_id: '98922' year: '2022' ... --- _id: '60366' abstract: - lang: eng text: AbstractThe so‐called motorcycle graph has been employed in recent years for various purposes in the context of structured and aligned block decomposition of 2D shapes and 2‐manifold surfaces. Applications are in the fields of surface parametrization, spline space construction, semi‐structured quad mesh generation, or geometry data compression. We describe a generalization of this motorcycle graph concept to the three‐dimensional volumetric setting. Through careful extensions aware of topological intricacies of this higher‐dimensional setting, we are able to guarantee important block decomposition properties also in this case. We describe algorithms for the construction of this 3D motorcycle complex on the basis of either hexahedral meshes or seamless volumetric parametrizations. Its utility is illustrated on examples in hexahedral mesh generation and volumetric T‐spline construction. author: - first_name: Hendrik full_name: Brückler, Hendrik id: '115694' last_name: Brückler - first_name: Ojaswi full_name: Gupta, Ojaswi last_name: Gupta - first_name: Manish full_name: Mandad, Manish last_name: Mandad - first_name: Marcel full_name: Campen, Marcel id: '114904' last_name: Campen orcid: 0000-0003-2340-3462 citation: ama: Brückler H, Gupta O, Mandad M, Campen M. The 3D Motorcycle Complex for Structured Volume Decomposition. Computer Graphics Forum. 2022;41(2):221-235. doi:10.1111/cgf.14470 apa: Brückler, H., Gupta, O., Mandad, M., & Campen, M. (2022). The 3D Motorcycle Complex for Structured Volume Decomposition. Computer Graphics Forum, 41(2), 221–235. https://doi.org/10.1111/cgf.14470 bibtex: '@article{Brückler_Gupta_Mandad_Campen_2022, title={The 3D Motorcycle Complex for Structured Volume Decomposition}, volume={41}, DOI={10.1111/cgf.14470}, number={2}, journal={Computer Graphics Forum}, publisher={Wiley}, author={Brückler, Hendrik and Gupta, Ojaswi and Mandad, Manish and Campen, Marcel}, year={2022}, pages={221–235} }' chicago: 'Brückler, Hendrik, Ojaswi Gupta, Manish Mandad, and Marcel Campen. “The 3D Motorcycle Complex for Structured Volume Decomposition.” Computer Graphics Forum 41, no. 2 (2022): 221–35. https://doi.org/10.1111/cgf.14470.' ieee: 'H. Brückler, O. Gupta, M. Mandad, and M. Campen, “The 3D Motorcycle Complex for Structured Volume Decomposition,” Computer Graphics Forum, vol. 41, no. 2, pp. 221–235, 2022, doi: 10.1111/cgf.14470.' mla: Brückler, Hendrik, et al. “The 3D Motorcycle Complex for Structured Volume Decomposition.” Computer Graphics Forum, vol. 41, no. 2, Wiley, 2022, pp. 221–35, doi:10.1111/cgf.14470. short: H. Brückler, O. Gupta, M. Mandad, M. Campen, Computer Graphics Forum 41 (2022) 221–235. date_created: 2025-06-25T08:52:53Z date_updated: 2025-07-14T12:47:02Z department: - _id: '969' doi: 10.1111/cgf.14470 extern: '1' intvolume: ' 41' issue: '2' language: - iso: eng page: 221-235 publication: Computer Graphics Forum publication_identifier: issn: - 0167-7055 - 1467-8659 publication_status: published publisher: Wiley status: public title: The 3D Motorcycle Complex for Structured Volume Decomposition type: journal_article user_id: '117512' volume: 41 year: '2022' ... --- _id: '60372' abstract: - lang: eng text: Developments in the field of parametrization-based quad mesh generation on surfaces have been impactful over the past decade. In this context, an important advance has been the replacement of error-prone rounding in the generation of integer-grid maps, by robust quantization methods. In parallel, parametrization-based hex mesh generation for volumes has been advanced. In this volumetric context, however, the state-of-the-art still relies on fragile rounding, not rarely producing defective meshes, especially when targeting a coarse mesh resolution. We present a method to robustly quantize volume parametrizations, i.e., to determine guaranteed valid choices of integers for 3D integer-grid maps. Inspired by the 2D case, we base our construction on a non-conforming cell decomposition of the volume, a 3D analogue of a T-mesh. In particular, we leverage the motorcycle complex, a recent generalization of the motorcycle graph, for this purpose. Integer values are expressed in a differential manner on the edges of this complex, enabling the efficient formulation of the conditions required to strictly prevent forcing the map into degeneration. Applying our method in the context of hexahedral meshing, we demonstrate that hexahedral meshes can be generated with significantly improved flexibility. author: - first_name: Hendrik full_name: Brückler, Hendrik id: '115694' last_name: Brückler - first_name: David full_name: Bommes, David last_name: Bommes - first_name: Marcel full_name: Campen, Marcel id: '114904' last_name: Campen orcid: 0000-0003-2340-3462 citation: ama: Brückler H, Bommes D, Campen M. Volume parametrization quantization for hexahedral meshing. ACM Transactions on Graphics. 2022;41(4):1-19. doi:10.1145/3528223.3530123 apa: Brückler, H., Bommes, D., & Campen, M. (2022). Volume parametrization quantization for hexahedral meshing. ACM Transactions on Graphics, 41(4), 1–19. https://doi.org/10.1145/3528223.3530123 bibtex: '@article{Brückler_Bommes_Campen_2022, title={Volume parametrization quantization for hexahedral meshing}, volume={41}, DOI={10.1145/3528223.3530123}, number={4}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Brückler, Hendrik and Bommes, David and Campen, Marcel}, year={2022}, pages={1–19} }' chicago: 'Brückler, Hendrik, David Bommes, and Marcel Campen. “Volume Parametrization Quantization for Hexahedral Meshing.” ACM Transactions on Graphics 41, no. 4 (2022): 1–19. https://doi.org/10.1145/3528223.3530123.' ieee: 'H. Brückler, D. Bommes, and M. Campen, “Volume parametrization quantization for hexahedral meshing,” ACM Transactions on Graphics, vol. 41, no. 4, pp. 1–19, 2022, doi: 10.1145/3528223.3530123.' mla: Brückler, Hendrik, et al. “Volume Parametrization Quantization for Hexahedral Meshing.” ACM Transactions on Graphics, vol. 41, no. 4, Association for Computing Machinery (ACM), 2022, pp. 1–19, doi:10.1145/3528223.3530123. short: H. Brückler, D. Bommes, M. Campen, ACM Transactions on Graphics 41 (2022) 1–19. date_created: 2025-06-25T09:07:20Z date_updated: 2025-07-14T12:47:23Z department: - _id: '969' doi: 10.1145/3528223.3530123 extern: '1' intvolume: ' 41' issue: '4' language: - iso: eng page: 1-19 publication: ACM Transactions on Graphics publication_identifier: issn: - 0730-0301 - 1557-7368 publication_status: published publisher: Association for Computing Machinery (ACM) status: public title: Volume parametrization quantization for hexahedral meshing type: journal_article user_id: '117512' volume: 41 year: '2022' ... --- _id: '52612' abstract: - lang: eng text: During resistance spot welding of zinc-coated advanced high-strength steels (AHSSs) for automotive production, liquid metal embrittlement (LME) cracking may occur in the event of a combination of various unfavorable influences. In this study, the interactions of different welding current levels and weld times on the tendency for LME cracking in third-generation AHSSs were investigated. LME manifested itself as high-penetration cracks around the circumference of the spot welds for welding currents closely below the expulsion limit. At the same time, the observed tendency for LME cracking showed no direct correlation with the overall heat input of the investigated welding processes. To identify a reliable indicator of the tendency for LME cracking, the local strain rate at the origin of the observed cracks was analyzed over the course of the welding process via finite element simulation. While the local strain rate showed a good correlation with the process-specific LME cracking tendency, it was difficult to interpret due to its discontinuous course. Therefore, based on the experimental measurement of electrode displacement during welding, electrode indentation velocity was proposed as a descriptive indicator for quantifying cracking tendency. author: - first_name: Christoph full_name: Böhne, Christoph id: '22483' last_name: Böhne - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: MAX full_name: BIEGLER, MAX last_name: BIEGLER - first_name: MICHAEL full_name: RETHMEIER, MICHAEL last_name: RETHMEIER citation: ama: Böhne C, Meschut G, BIEGLER M, RETHMEIER M. The Influence of Electrode Indentation Rate on LME Formation during RSW. Welding Journal. 2022;101(7):197-207. doi:10.29391/2022.101.015 apa: Böhne, C., Meschut, G., BIEGLER, M., & RETHMEIER, M. (2022). The Influence of Electrode Indentation Rate on LME Formation during RSW. Welding Journal, 101(7), 197–207. https://doi.org/10.29391/2022.101.015 bibtex: '@article{Böhne_Meschut_BIEGLER_RETHMEIER_2022, title={The Influence of Electrode Indentation Rate on LME Formation during RSW}, volume={101}, DOI={10.29391/2022.101.015}, number={7}, journal={Welding Journal}, publisher={American Welding Society}, author={Böhne, Christoph and Meschut, Gerson and BIEGLER, MAX and RETHMEIER, MICHAEL}, year={2022}, pages={197–207} }' chicago: 'Böhne, Christoph, Gerson Meschut, MAX BIEGLER, and MICHAEL RETHMEIER. “The Influence of Electrode Indentation Rate on LME Formation during RSW.” Welding Journal 101, no. 7 (2022): 197–207. https://doi.org/10.29391/2022.101.015.' ieee: 'C. Böhne, G. Meschut, M. BIEGLER, and M. RETHMEIER, “The Influence of Electrode Indentation Rate on LME Formation during RSW,” Welding Journal, vol. 101, no. 7, pp. 197–207, 2022, doi: 10.29391/2022.101.015.' mla: Böhne, Christoph, et al. “The Influence of Electrode Indentation Rate on LME Formation during RSW.” Welding Journal, vol. 101, no. 7, American Welding Society, 2022, pp. 197–207, doi:10.29391/2022.101.015. short: C. Böhne, G. Meschut, M. BIEGLER, M. RETHMEIER, Welding Journal 101 (2022) 197–207. date_created: 2024-03-18T11:51:57Z date_updated: 2025-08-07T09:29:30Z department: - _id: '157' doi: 10.29391/2022.101.015 intvolume: ' 101' issue: '7' keyword: - Metals and Alloys - Mechanical Engineering - Mechanics of Materials language: - iso: eng page: 197-207 popular_science: '1' publication: Welding Journal publication_identifier: issn: - 0043-2296 - 2689-0445 publication_status: published publisher: American Welding Society quality_controlled: '1' status: public title: The Influence of Electrode Indentation Rate on LME Formation during RSW type: journal_article user_id: '60398' volume: 101 year: '2022' ... --- _id: '60900' abstract: - lang: eng text: Neuroscience models commonly have a high number of degrees of freedom and only specific regions within the parameter space are able to produce dynamics of interest. This makes the development of tools and strategies to efficiently find these regions of high importance to advance brain research. Exploring the high dimensional parameter space using numerical simulations has been a frequently used technique in the last years in many areas of computational neuroscience. Today, high performance computing (HPC) can provide a powerful infrastructure to speed up explorations and increase our general understanding of the behavior of the model in reasonable times. Learning to learn (L2L) is a well-known concept in machine learning (ML) and a specific method for acquiring constraints to improve learning performance. This concept can be decomposed into a two loop optimization process where the target of optimization can consist of any program such as an artificial neural network, a spiking network, a single cell model, or a whole brain simulation. In this work, we present L2L as an easy to use and flexible framework to perform parameter and hyper-parameter space exploration of neuroscience models on HPC infrastructure. Learning to learn is an implementation of the L2L concept written in Python. This open-source software allows several instances of an optimization target to be executed with different parameters in an embarrassingly parallel fashion on HPC. L2L provides a set of built-in optimizer algorithms, which make adaptive and efficient exploration of parameter spaces possible. Different from other optimization toolboxes, L2L provides maximum flexibility for the way the optimization target can be executed. In this paper, we show a variety of examples of neuroscience models being optimized within the L2L framework to execute different types of tasks. The tasks used to illustrate the concept go from reproducing empirical data to learning how to solve a problem in a dynamic environment. We particularly focus on simulations with models ranging from the single cell to the whole brain and using a variety of simulation engines like NEST, Arbor, TVB, OpenAIGym, and NetLogo. article_number: '885207' author: - first_name: Alper full_name: Yegenoglu, Alper id: '117951' last_name: Yegenoglu orcid: 0000-0001-8869-215X - first_name: Anand full_name: Subramoney, Anand last_name: Subramoney - first_name: Thorsten full_name: Hater, Thorsten last_name: Hater - first_name: Cristian full_name: Jimenez-Romero, Cristian last_name: Jimenez-Romero - first_name: Wouter full_name: Klijn, Wouter last_name: Klijn - first_name: Aarón full_name: Pérez Martín, Aarón last_name: Pérez Martín - first_name: Michiel full_name: van der Vlag, Michiel last_name: van der Vlag - first_name: Michael full_name: Herty, Michael last_name: Herty - first_name: Abigail full_name: Morrison, Abigail last_name: Morrison - first_name: Sandra full_name: Diaz-Pier, Sandra last_name: Diaz-Pier citation: ama: Yegenoglu A, Subramoney A, Hater T, et al. Exploring Parameter and Hyper-Parameter Spaces of Neuroscience Models on High Performance Computers With Learning to Learn. Frontiers in Computational Neuroscience. 2022;16. doi:10.3389/fncom.2022.885207 apa: Yegenoglu, A., Subramoney, A., Hater, T., Jimenez-Romero, C., Klijn, W., Pérez Martín, A., van der Vlag, M., Herty, M., Morrison, A., & Diaz-Pier, S. (2022). Exploring Parameter and Hyper-Parameter Spaces of Neuroscience Models on High Performance Computers With Learning to Learn. Frontiers in Computational Neuroscience, 16, Article 885207. https://doi.org/10.3389/fncom.2022.885207 bibtex: '@article{Yegenoglu_Subramoney_Hater_Jimenez-Romero_Klijn_Pérez Martín_van der Vlag_Herty_Morrison_Diaz-Pier_2022, title={Exploring Parameter and Hyper-Parameter Spaces of Neuroscience Models on High Performance Computers With Learning to Learn}, volume={16}, DOI={10.3389/fncom.2022.885207}, number={885207}, journal={Frontiers in Computational Neuroscience}, publisher={Frontiers Media SA}, author={Yegenoglu, Alper and Subramoney, Anand and Hater, Thorsten and Jimenez-Romero, Cristian and Klijn, Wouter and Pérez Martín, Aarón and van der Vlag, Michiel and Herty, Michael and Morrison, Abigail and Diaz-Pier, Sandra}, year={2022} }' chicago: Yegenoglu, Alper, Anand Subramoney, Thorsten Hater, Cristian Jimenez-Romero, Wouter Klijn, Aarón Pérez Martín, Michiel van der Vlag, Michael Herty, Abigail Morrison, and Sandra Diaz-Pier. “Exploring Parameter and Hyper-Parameter Spaces of Neuroscience Models on High Performance Computers With Learning to Learn.” Frontiers in Computational Neuroscience 16 (2022). https://doi.org/10.3389/fncom.2022.885207. ieee: 'A. Yegenoglu et al., “Exploring Parameter and Hyper-Parameter Spaces of Neuroscience Models on High Performance Computers With Learning to Learn,” Frontiers in Computational Neuroscience, vol. 16, Art. no. 885207, 2022, doi: 10.3389/fncom.2022.885207.' mla: Yegenoglu, Alper, et al. “Exploring Parameter and Hyper-Parameter Spaces of Neuroscience Models on High Performance Computers With Learning to Learn.” Frontiers in Computational Neuroscience, vol. 16, 885207, Frontiers Media SA, 2022, doi:10.3389/fncom.2022.885207. short: A. Yegenoglu, A. Subramoney, T. Hater, C. Jimenez-Romero, W. Klijn, A. Pérez Martín, M. van der Vlag, M. Herty, A. Morrison, S. Diaz-Pier, Frontiers in Computational Neuroscience 16 (2022). date_created: 2025-08-06T15:02:30Z date_updated: 2025-08-08T11:40:08Z doi: 10.3389/fncom.2022.885207 intvolume: ' 16' language: - iso: eng publication: Frontiers in Computational Neuroscience publication_identifier: issn: - 1662-5188 publication_status: published publisher: Frontiers Media SA status: public title: Exploring Parameter and Hyper-Parameter Spaces of Neuroscience Models on High Performance Computers With Learning to Learn type: journal_article user_id: '117951' volume: 16 year: '2022' ... --- _id: '35143' author: - first_name: Sabrina full_name: Bonanati, Sabrina last_name: Bonanati - first_name: Heike M. full_name: Buhl, Heike M. id: '27152' last_name: Buhl - first_name: Lara full_name: Gerhardts, Lara last_name: Gerhardts - first_name: Anna-Maria full_name: Kamin, Anna-Maria last_name: Kamin - first_name: Dorothee full_name: Meister, Dorothee id: '346' last_name: Meister orcid: orcid.org/0000-0002-9685-4988 citation: ama: 'Bonanati S, Buhl HM, Gerhardts L, Kamin A-M, Meister D. Digitale häusliche Lernumgebung: Prädiktoren und Effekte elterlicher Unterstützung beim Lernen mit digitalen Medien. Medienimpulse. 2022;60(4). doi:10.21243/mi-04-22-17' apa: 'Bonanati, S., Buhl, H. M., Gerhardts, L., Kamin, A.-M., & Meister, D. (2022). Digitale häusliche Lernumgebung: Prädiktoren und Effekte elterlicher Unterstützung beim Lernen mit digitalen Medien. Medienimpulse, 60(4). https://doi.org/10.21243/mi-04-22-17' bibtex: '@article{Bonanati_Buhl_Gerhardts_Kamin_Meister_2022, title={Digitale häusliche Lernumgebung: Prädiktoren und Effekte elterlicher Unterstützung beim Lernen mit digitalen Medien}, volume={60}, DOI={10.21243/mi-04-22-17}, number={4}, journal={Medienimpulse}, author={Bonanati, Sabrina and Buhl, Heike M. and Gerhardts, Lara and Kamin, Anna-Maria and Meister, Dorothee}, year={2022} }' chicago: 'Bonanati, Sabrina, Heike M. Buhl, Lara Gerhardts, Anna-Maria Kamin, and Dorothee Meister. “Digitale häusliche Lernumgebung: Prädiktoren und Effekte elterlicher Unterstützung beim Lernen mit digitalen Medien.” Medienimpulse 60, no. 4 (2022). https://doi.org/10.21243/mi-04-22-17.' ieee: 'S. Bonanati, H. M. Buhl, L. Gerhardts, A.-M. Kamin, and D. Meister, “Digitale häusliche Lernumgebung: Prädiktoren und Effekte elterlicher Unterstützung beim Lernen mit digitalen Medien,” Medienimpulse, vol. 60, no. 4, 2022, doi: 10.21243/mi-04-22-17.' mla: 'Bonanati, Sabrina, et al. “Digitale häusliche Lernumgebung: Prädiktoren und Effekte elterlicher Unterstützung beim Lernen mit digitalen Medien.” Medienimpulse, vol. 60, no. 4, 2022, doi:10.21243/mi-04-22-17.' short: S. Bonanati, H.M. Buhl, L. Gerhardts, A.-M. Kamin, D. Meister, Medienimpulse 60 (2022). date_created: 2023-01-03T13:46:58Z date_updated: 2025-08-12T07:56:50Z department: - _id: '427' doi: 10.21243/mi-04-22-17 intvolume: ' 60' issue: '4' language: - iso: ger main_file_link: - open_access: '1' url: https://journals.univie.ac.at/index.php/mp/article/view/7683 oa: '1' project: - _id: '378' grant_number: 01JD1814A name: 'DigHomE: DigHomE: Digital Home Learning Environment – Gelingensbedingungen elterlicher Unterstützung bei der informationsorientierten Internetnutzung' publication: Medienimpulse publication_status: published status: public title: 'Digitale häusliche Lernumgebung: Prädiktoren und Effekte elterlicher Unterstützung beim Lernen mit digitalen Medien' type: journal_article user_id: '90826' volume: 60 year: '2022' ... --- _id: '27160' abstract: - lang: eng text: "We study the complexity of problems solvable in deterministic polynomial time\r\nwith access to an NP or Quantum Merlin-Arthur (QMA)-oracle, such as $P^{NP}$\r\nand $P^{QMA}$, respectively. The former allows one to classify problems more\r\nfinely than the Polynomial-Time Hierarchy (PH), whereas the latter\r\ncharacterizes physically motivated problems such as Approximate Simulation\r\n(APX-SIM) [Ambainis, CCC 2014]. In this area, a central role has been played by\r\nthe classes $P^{NP[\\log]}$ and $P^{QMA[\\log]}$, defined identically to $P^{NP}$\r\nand $P^{QMA}$, except that only logarithmically many oracle queries are\r\nallowed. Here, [Gottlob, FOCS 1993] showed that if the adaptive queries made by\r\na $P^{NP}$ machine have a \"query graph\" which is a tree, then this computation\r\ncan be simulated in $P^{NP[\\log]}$.\r\n In this work, we first show that for any verification class\r\n$C\\in\\{NP,MA,QCMA,QMA,QMA(2),NEXP,QMA_{\\exp}\\}$, any $P^C$ machine with a query\r\ngraph of \"separator number\" $s$ can be simulated using deterministic time\r\n$\\exp(s\\log n)$ and $s\\log n$ queries to a $C$-oracle. When $s\\in O(1)$ (which\r\nincludes the case of $O(1)$-treewidth, and thus also of trees), this gives an\r\nupper bound of $P^{C[\\log]}$, and when $s\\in O(\\log^k(n))$, this yields bound\r\n$QP^{C[\\log^{k+1}]}$ (QP meaning quasi-polynomial time). We next show how to\r\ncombine Gottlob's \"admissible-weighting function\" framework with the\r\n\"flag-qubit\" framework of [Watson, Bausch, Gharibian, 2020], obtaining a\r\nunified approach for embedding $P^C$ computations directly into APX-SIM\r\ninstances in a black-box fashion. Finally, we formalize a simple no-go\r\nstatement about polynomials (c.f. [Krentel, STOC 1986]): Given a multi-linear\r\npolynomial $p$ specified via an arithmetic circuit, if one can \"weakly\r\ncompress\" $p$ so that its optimal value requires $m$ bits to represent, then\r\n$P^{NP}$ can be decided with only $m$ queries to an NP-oracle." author: - first_name: Sevag full_name: Gharibian, Sevag id: '71541' last_name: Gharibian orcid: 0000-0002-9992-3379 - first_name: Dorian full_name: Rudolph, Dorian id: '57863' last_name: Rudolph citation: ama: 'Gharibian S, Rudolph D. On polynomially many queries to NP or QMA oracles. In: 13th Innovations in Theoretical Computer Science (ITCS 2022). Vol 215. ; 2022:1-27. doi:10.4230/LIPIcs.ITCS.2022.75' apa: Gharibian, S., & Rudolph, D. (2022). On polynomially many queries to NP or QMA oracles. 13th Innovations in Theoretical Computer Science (ITCS 2022), 215(75), 1–27. https://doi.org/10.4230/LIPIcs.ITCS.2022.75 bibtex: '@inproceedings{Gharibian_Rudolph_2022, title={On polynomially many queries to NP or QMA oracles}, volume={215}, DOI={10.4230/LIPIcs.ITCS.2022.75}, number={75}, booktitle={13th Innovations in Theoretical Computer Science (ITCS 2022)}, author={Gharibian, Sevag and Rudolph, Dorian}, year={2022}, pages={1–27} }' chicago: Gharibian, Sevag, and Dorian Rudolph. “On Polynomially Many Queries to NP or QMA Oracles.” In 13th Innovations in Theoretical Computer Science (ITCS 2022), 215:1–27, 2022. https://doi.org/10.4230/LIPIcs.ITCS.2022.75. ieee: 'S. Gharibian and D. Rudolph, “On polynomially many queries to NP or QMA oracles,” in 13th Innovations in Theoretical Computer Science (ITCS 2022), 2022, vol. 215, no. 75, pp. 1–27, doi: 10.4230/LIPIcs.ITCS.2022.75.' mla: Gharibian, Sevag, and Dorian Rudolph. “On Polynomially Many Queries to NP or QMA Oracles.” 13th Innovations in Theoretical Computer Science (ITCS 2022), vol. 215, no. 75, 2022, pp. 1–27, doi:10.4230/LIPIcs.ITCS.2022.75. short: 'S. Gharibian, D. Rudolph, in: 13th Innovations in Theoretical Computer Science (ITCS 2022), 2022, pp. 1–27.' date_created: 2021-11-05T08:08:29Z date_updated: 2026-04-30T14:11:00Z department: - _id: '623' - _id: '7' doi: 10.4230/LIPIcs.ITCS.2022.75 intvolume: ' 215' issue: '75' language: - iso: eng main_file_link: - open_access: '1' url: https://drops.dagstuhl.de/opus/frontdoor.php?source_opus=15671 oa: '1' page: 1-27 publication: 13th Innovations in Theoretical Computer Science (ITCS 2022) status: public title: On polynomially many queries to NP or QMA oracles type: conference user_id: '71541' volume: 215 year: '2022' ... --- _id: '66215' abstract: - lang: eng text: In the near future, the development of autonomous driving will get more complex as the vehicles will not only rely on their own sensors but also communicate with other vehicles and the infrastructure to cooperate and improve the driving experience. Towards this, several research areas, such as robotics, communication, and control, are required to collaborate in order to implement future-ready methods. However, each area focuses on the development of its own components first, while the effects the components may have on the whole system are only considered at a later stage. In this work, we integrate the simulation tools of robotics, communication and control namely ROS2, OMNeT++, and MATLAB to evaluate cooperative driving scenarios. The framework can be utilized to develop the individual components using the designated tools, while the final evaluation can be conducted in a complete scenario, enabling the simulation of advanced multi-robot applications for cooperative driving. Furthermore, it can be used to integrate additional tools, as the integration is done in a modular way. We showcase the framework by demonstrating a platooning scenario under cooperative adaptive cruise control (CACC) and the ETSI ITS-G5 communication architecture. Additionally, we compare the differences of the controller performance between the theoretical analysis and practical case study. citation: ama: 'AuNa: Modularly Integrated Simulation Framework for Cooperative Autonomous Navigation. Published online 2022. doi:10.48550/ARXIV.2207.05544' apa: 'AuNa: Modularly Integrated Simulation Framework for Cooperative Autonomous Navigation. (2022). https://doi.org/10.48550/ARXIV.2207.05544' bibtex: '@article{AuNa: Modularly Integrated Simulation Framework for Cooperative Autonomous Navigation_2022, DOI={10.48550/ARXIV.2207.05544}, year={2022} }' chicago: '“AuNa: Modularly Integrated Simulation Framework for Cooperative Autonomous Navigation,” 2022. https://doi.org/10.48550/ARXIV.2207.05544.' ieee: '“AuNa: Modularly Integrated Simulation Framework for Cooperative Autonomous Navigation,” 2022, doi: 10.48550/ARXIV.2207.05544.' mla: 'AuNa: Modularly Integrated Simulation Framework for Cooperative Autonomous Navigation. 2022, doi:10.48550/ARXIV.2207.05544.' short: (2022). date_created: 2026-07-03T21:20:00Z date_updated: 2026-07-05T14:46:04Z doi: 10.48550/ARXIV.2207.05544 status: public title: 'AuNa: Modularly Integrated Simulation Framework for Cooperative Autonomous Navigation' type: journal_article user_id: '128464' year: '2022' ... --- _id: '34434' abstract: - lang: eng text: In timing chain drives, the chain is the critical component regarding the wear. Relative movements take place at the chain joint between pin and bush, which lead to wear of the chain joint due to friction and so to chain elongation. The chain joint is generally lubricated with oils, through which elastohydrodynamic processes can occur in the gap between the pin and the bush of the chain joint. A simulation model is developed here to examine these elastohydrodynamic processes considering a mass conserving cavitation model, the Newtonian flow behaviour of the lubricant and the structuring of the bush surface, whereby the real form of the bush is considered. MBS simulations are used to obtain realistic loads on the chain joint. author: - first_name: Lionel full_name: Simo Kamga, Lionel last_name: Simo Kamga - first_name: Dominik full_name: Meffert, Dominik last_name: Meffert - first_name: Balázs full_name: Magyar, Balázs id: '97759' last_name: Magyar - first_name: Manuel full_name: Oehler, Manuel last_name: Oehler - first_name: Bernd full_name: Sauer, Bernd last_name: Sauer citation: ama: Simo Kamga L, Meffert D, Magyar B, Oehler M, Sauer B. Simulative investigation of the influence of surface texturing on the elastohydrodynamic lubrication in chain joints. Tribology International. 2022;171:107564. doi:https://doi.org/10.1016/j.triboint.2022.107564 apa: Simo Kamga, L., Meffert, D., Magyar, B., Oehler, M., & Sauer, B. (2022). Simulative investigation of the influence of surface texturing on the elastohydrodynamic lubrication in chain joints. Tribology International, 171, 107564. https://doi.org/10.1016/j.triboint.2022.107564 bibtex: '@article{Simo Kamga_Meffert_Magyar_Oehler_Sauer_2022, title={Simulative investigation of the influence of surface texturing on the elastohydrodynamic lubrication in chain joints}, volume={171}, DOI={https://doi.org/10.1016/j.triboint.2022.107564}, journal={Tribology International}, author={Simo Kamga, Lionel and Meffert, Dominik and Magyar, Balázs and Oehler, Manuel and Sauer, Bernd}, year={2022}, pages={107564} }' chicago: 'Simo Kamga, Lionel, Dominik Meffert, Balázs Magyar, Manuel Oehler, and Bernd Sauer. “Simulative Investigation of the Influence of Surface Texturing on the Elastohydrodynamic Lubrication in Chain Joints.” Tribology International 171 (2022): 107564. https://doi.org/10.1016/j.triboint.2022.107564.' ieee: 'L. Simo Kamga, D. Meffert, B. Magyar, M. Oehler, and B. Sauer, “Simulative investigation of the influence of surface texturing on the elastohydrodynamic lubrication in chain joints,” Tribology International, vol. 171, p. 107564, 2022, doi: https://doi.org/10.1016/j.triboint.2022.107564.' mla: Simo Kamga, Lionel, et al. “Simulative Investigation of the Influence of Surface Texturing on the Elastohydrodynamic Lubrication in Chain Joints.” Tribology International, vol. 171, 2022, p. 107564, doi:https://doi.org/10.1016/j.triboint.2022.107564. short: L. Simo Kamga, D. Meffert, B. Magyar, M. Oehler, B. Sauer, Tribology International 171 (2022) 107564. date_created: 2022-12-15T09:28:48Z date_updated: 2026-07-18T13:20:50Z department: - _id: '146' doi: https://doi.org/10.1016/j.triboint.2022.107564 extern: '1' intvolume: ' 171' keyword: - EHL-simulation - Cavitation - Chain drives - Chain joint - Micro-structuring language: - iso: eng page: '107564' publication: Tribology International publication_identifier: issn: - 0301-679X quality_controlled: '1' status: public title: Simulative investigation of the influence of surface texturing on the elastohydrodynamic lubrication in chain joints type: journal_article user_id: '97759' volume: 171 year: '2022' ... --- _id: '24760' abstract: - lang: ger text: "Anwendungen von Laser-Sinter Bauteilen als Sichtteile sind aufgrund der vergleichsweise schlechten Oberflächenqualität sehr begrenzt. In dieser Arbeit werden dreidimensionale Kennwerte benutzt, um die Oberflächenqualität von Laser-Sinter Bauteiloberflächen und die Einflüsse aus unterschiedlichen Bereichen der gesamten Prozesskette zu evaluieren. Beispielsweise wurden objektive Kennwerte, mit deren Hilfe Orangenhaut zu identifizieren ist, und Prozessparameter, die diese deutlich vermindern, gefunden. Mittels Durchführung von haptischen Versuchen wurde das subjektive Empfinden ermittelt und konnten zu objektiven Kennwerten korreliert werden. Eine mikroskopische Betrachtung des flachen Oberflächenwinkels mit verschieden farbigen Pulvern zeigt neue Erkenntnisse zum Anschmelzvorgang von Partikeln an die Schmelze. Zur nachträglichen Glättung von Oberflächen wurden mechanische, chemische und optische Nachbehandlungsmethoden verwendet und deren Potential aufgezeigt. Eine abschließende neuartige Simulation der dreidimensionalen Topografie bildet die Grundlage für ein Programm zur automatischen und funktionsgerechten Orientierung von Bauteilen, welche am Beispiel eines realen Bauteils erfolgreich validiert wurde. Zusammengenommen zeigen die Ergebnisse, dass die richtige Wahl von Bauorientierung und Prozessparametern entscheidend für die Bauteilqualität ist und selbst eine aufwendige Nachbearbeitung eine ungeschickte Wahl derer nur schwerlich ausgleichen kann.\r\n" author: - first_name: Patrick full_name: Delfs, Patrick last_name: Delfs citation: ama: Delfs P. Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile. Vol 22. Shaker Verlag GmbH; 2021. apa: Delfs, P. (2021). Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile (Vol. 22). Shaker Verlag GmbH. bibtex: '@book{Delfs_2021, place={Düren}, series={Forschungsberichte des Direct Manufacturing Research Centers}, title={Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile}, volume={22}, publisher={Shaker Verlag GmbH}, author={Delfs, Patrick}, year={2021}, collection={Forschungsberichte des Direct Manufacturing Research Centers} }' chicago: 'Delfs, Patrick. Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile. Vol. 22. Forschungsberichte des Direct Manufacturing Research Centers. Düren: Shaker Verlag GmbH, 2021.' ieee: 'P. Delfs, Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile, vol. 22. Düren: Shaker Verlag GmbH, 2021.' mla: Delfs, Patrick. Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile. Shaker Verlag GmbH, 2021. short: P. Delfs, Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile, Shaker Verlag GmbH, Düren, 2021. date_created: 2021-09-21T11:36:18Z date_updated: 2022-01-06T06:56:34Z department: - _id: '150' - _id: '624' - _id: '219' intvolume: ' 22' keyword: - Additive Fertigung - Oberflächenqualität - 3D - Topografie - Simulation - PA12 - Laser-Sintern - Rauheit language: - iso: ger main_file_link: - url: https://www.shaker.de/de/content/catalogue/index.asp?lang=de&ID=8&ISBN=978-3-8440-7825-1&search=yes page: '126' place: Düren publication_identifier: isbn: - 978-3-8440-7825-1 publication_status: published publisher: Shaker Verlag GmbH series_title: Forschungsberichte des Direct Manufacturing Research Centers status: public supervisor: - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid title: Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile type: dissertation user_id: '71545' volume: 22 year: '2021' ... --- _id: '27970' author: - first_name: AW full_name: Barclay, AW last_name: Barclay - first_name: Augustin full_name: LSA, Augustin last_name: LSA - first_name: F full_name: Brighenti, F last_name: Brighenti - first_name: E full_name: Delport, E last_name: Delport - first_name: CJ full_name: Henry, CJ last_name: Henry - first_name: JL full_name: Sievenpiper, JL last_name: Sievenpiper - first_name: K full_name: Usic, K last_name: Usic - first_name: Y full_name: Yuexin, Y last_name: Yuexin - first_name: A full_name: Zurbau, A last_name: Zurbau - first_name: Wolever full_name: TMS, Wolever last_name: TMS - first_name: A full_name: Astrup, A last_name: Astrup - first_name: M full_name: Bulló, M last_name: Bulló - first_name: Anette full_name: Buyken, Anette id: '65985' last_name: Buyken - first_name: A full_name: Ceriello, A last_name: Ceriello - first_name: PR full_name: Ellis, PR last_name: Ellis - first_name: MA full_name: Vanginkel, MA last_name: Vanginkel - first_name: Kendall full_name: CWC, Kendall last_name: CWC - first_name: C full_name: La Vecchia, C last_name: La Vecchia - first_name: G full_name: Livesey, G last_name: Livesey - first_name: A full_name: Poli, A last_name: Poli - first_name: G full_name: Riccardi, G last_name: Riccardi - first_name: J full_name: Salas-Salvadó, J last_name: Salas-Salvadó - first_name: A full_name: Trichopoulou, A last_name: Trichopoulou - first_name: K full_name: Bhaskaran, K last_name: Bhaskaran - first_name: Jenkins full_name: DJA, Jenkins last_name: DJA - first_name: WC full_name: Willett, WC last_name: Willett - first_name: JC full_name: Brand-Miller, JC last_name: Brand-Miller citation: ama: 'Barclay A, LSA A, Brighenti F, et al. Dietary Glycaemic Index Labelling: A Global Perspective. Nutrients. 2021;13(9). doi:10.3390/nu13093244' apa: 'Barclay, A., LSA, A., Brighenti, F., Delport, E., Henry, C., Sievenpiper, J., Usic, K., Yuexin, Y., Zurbau, A., TMS, W., Astrup, A., Bulló, M., Buyken, A., Ceriello, A., Ellis, P., Vanginkel, M., CWC, K., La Vecchia, C., Livesey, G., … Brand-Miller, J. (2021). Dietary Glycaemic Index Labelling: A Global Perspective. Nutrients, 13(9). https://doi.org/10.3390/nu13093244' bibtex: '@article{Barclay_LSA_Brighenti_Delport_Henry_Sievenpiper_Usic_Yuexin_Zurbau_TMS_et al._2021, title={Dietary Glycaemic Index Labelling: A Global Perspective.}, volume={13}, DOI={10.3390/nu13093244}, number={9}, journal={Nutrients}, author={Barclay, AW and LSA, Augustin and Brighenti, F and Delport, E and Henry, CJ and Sievenpiper, JL and Usic, K and Yuexin, Y and Zurbau, A and TMS, Wolever and et al.}, year={2021} }' chicago: 'Barclay, AW, Augustin LSA, F Brighenti, E Delport, CJ Henry, JL Sievenpiper, K Usic, et al. “Dietary Glycaemic Index Labelling: A Global Perspective.” Nutrients 13, no. 9 (2021). https://doi.org/10.3390/nu13093244.' ieee: 'A. Barclay et al., “Dietary Glycaemic Index Labelling: A Global Perspective.,” Nutrients, vol. 13, no. 9, 2021, doi: 10.3390/nu13093244.' mla: 'Barclay, AW, et al. “Dietary Glycaemic Index Labelling: A Global Perspective.” Nutrients, vol. 13, no. 9, 2021, doi:10.3390/nu13093244.' short: A. Barclay, A. LSA, F. Brighenti, E. Delport, C. Henry, J. Sievenpiper, K. Usic, Y. Yuexin, A. Zurbau, W. TMS, A. Astrup, M. Bulló, A. Buyken, A. Ceriello, P. Ellis, M. Vanginkel, K. CWC, C. La Vecchia, G. Livesey, A. Poli, G. Riccardi, J. Salas-Salvadó, A. Trichopoulou, K. Bhaskaran, J. DJA, W. Willett, J. Brand-Miller, Nutrients 13 (2021). date_created: 2021-11-26T13:12:54Z date_updated: 2022-01-06T06:57:49Z department: - _id: '17' - _id: '22' - _id: '571' doi: 10.3390/nu13093244 external_id: pmid: - '34579120' intvolume: ' 13' issue: '9' language: - iso: eng pmid: '1' publication: Nutrients publication_identifier: issn: - 2072-6643 status: public title: 'Dietary Glycaemic Index Labelling: A Global Perspective.' type: journal_article user_id: '61597' volume: 13 year: '2021' ... --- _id: '28440' author: - first_name: Marcel full_name: Triebus, Marcel id: '66036' last_name: Triebus - first_name: Alexander full_name: Reitz, Alexander id: '24803' last_name: Reitz orcid: 0000-0001-9047-467X - first_name: Olexandr full_name: Grydin, Olexandr id: '43822' last_name: Grydin - first_name: Julian full_name: Grenz, Julian last_name: Grenz - first_name: Andreas full_name: Schneidt, Andreas last_name: Schneidt - first_name: Rüdiger full_name: Erhardt, Rüdiger last_name: Erhardt - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster - first_name: Mirko full_name: Schaper, Mirko id: '43720' last_name: Schaper citation: ama: 'Triebus M, Reitz A, Grydin O, et al. Forming Simulation of Tailored Press Hardened Parts. In: 13th European LS-DYNA Conference 2021. ; 2021.' apa: Triebus, M., Reitz, A., Grydin, O., Grenz, J., Schneidt, A., Erhardt, R., Tröster, T., & Schaper, M. (2021). Forming Simulation of Tailored Press Hardened Parts. 13th European LS-DYNA Conference 2021. 13th European LS-DYNA Conference 2021, Ulm. bibtex: '@inproceedings{Triebus_Reitz_Grydin_Grenz_Schneidt_Erhardt_Tröster_Schaper_2021, title={Forming Simulation of Tailored Press Hardened Parts}, booktitle={13th European LS-DYNA Conference 2021}, author={Triebus, Marcel and Reitz, Alexander and Grydin, Olexandr and Grenz, Julian and Schneidt, Andreas and Erhardt, Rüdiger and Tröster, Thomas and Schaper, Mirko}, year={2021} }' chicago: Triebus, Marcel, Alexander Reitz, Olexandr Grydin, Julian Grenz, Andreas Schneidt, Rüdiger Erhardt, Thomas Tröster, and Mirko Schaper. “Forming Simulation of Tailored Press Hardened Parts.” In 13th European LS-DYNA Conference 2021, 2021. ieee: M. Triebus et al., “Forming Simulation of Tailored Press Hardened Parts,” presented at the 13th European LS-DYNA Conference 2021, Ulm, 2021. mla: Triebus, Marcel, et al. “Forming Simulation of Tailored Press Hardened Parts.” 13th European LS-DYNA Conference 2021, 2021. short: 'M. Triebus, A. Reitz, O. Grydin, J. Grenz, A. Schneidt, R. Erhardt, T. Tröster, M. Schaper, in: 13th European LS-DYNA Conference 2021, 2021.' conference: end_date: 2021-10-06 location: Ulm name: 13th European LS-DYNA Conference 2021 start_date: 2021-10-04 date_created: 2021-12-08T10:09:49Z date_updated: 2022-01-06T06:58:05Z department: - _id: '9' - _id: '321' - _id: '149' - _id: '158' language: - iso: eng main_file_link: - open_access: '1' url: https://www.dynalook.com/conferences/13th-european-ls-dyna-conference-2021/forming/triebus_paderborn_university.pdf oa: '1' publication: 13th European LS-DYNA Conference 2021 status: public title: Forming Simulation of Tailored Press Hardened Parts type: conference user_id: '66036' year: '2021' ... --- _id: '24427' author: - first_name: Sebastian full_name: Magerkohl, Sebastian id: '28520' last_name: Magerkohl - first_name: Jan-Peter full_name: Brüggemann, Jan-Peter last_name: Brüggemann citation: ama: 'Magerkohl S, Brüggemann J-P. 3D-Druck in der industriellen Anwendung - Funktions- und fertigungsgerechte Konstruktion mit additiver Fertigung (Vortrag). In: ; 2021.' apa: Magerkohl, S., & Brüggemann, J.-P. (2021). 3D-Druck in der industriellen Anwendung - Funktions- und fertigungsgerechte Konstruktion mit additiver Fertigung (Vortrag). bibtex: '@inproceedings{Magerkohl_Brüggemann_2021, title={3D-Druck in der industriellen Anwendung - Funktions- und fertigungsgerechte Konstruktion mit additiver Fertigung (Vortrag)}, author={Magerkohl, Sebastian and Brüggemann, Jan-Peter}, year={2021} }' chicago: Magerkohl, Sebastian, and Jan-Peter Brüggemann. “3D-Druck in Der Industriellen Anwendung - Funktions- Und Fertigungsgerechte Konstruktion Mit Additiver Fertigung (Vortrag),” 2021. ieee: S. Magerkohl and J.-P. Brüggemann, “3D-Druck in der industriellen Anwendung - Funktions- und fertigungsgerechte Konstruktion mit additiver Fertigung (Vortrag),” 2021. mla: Magerkohl, Sebastian, and Jan-Peter Brüggemann. 3D-Druck in Der Industriellen Anwendung - Funktions- Und Fertigungsgerechte Konstruktion Mit Additiver Fertigung (Vortrag). 2021. short: 'S. Magerkohl, J.-P. Brüggemann, in: 2021.' date_created: 2021-09-14T13:21:52Z date_updated: 2022-01-06T06:56:20Z department: - _id: '146' language: - iso: eng status: public title: 3D-Druck in der industriellen Anwendung - Funktions- und fertigungsgerechte Konstruktion mit additiver Fertigung (Vortrag) type: conference user_id: '28520' year: '2021' ...