TRR188 - Conferences

Konferenzbeiträge / Conferences

2024

Tekkaya, A. E., 2024, Damage in Metal Forming: Enhancing Product Properties, Department of Automotive Engineering, Clemson University, Clemson, South Carolina

Gitschel, R., Gebhard, J., Tekkaya, A. E., 2024, Increasing Impact Toughness of Cold Forged Airbag Gas Generators by Damage-Controlled Forming, Proceedings of 9^th JSTP International Seminar on Precision Forging, Kyoto, Japan

Tekkaya, A. E., 2024, Effect of Loading Path on Damage in Metal Forming, Xi’an Jiaotong University, Xi’an/China

Tekkaya, A.E., 2024, A paradigm change in metal forming: From formability to usability, TMS Speciality Congress 2024, Symposium on Digital & Robotic Forming 2024, Cleveland, Ohio, USA

2023

Tekkaya, A.E., Effect of Loading Path on Damage Evolution in Metal Forming, Numisheet/FTF Technical Meeting (2023)

Lücker, L.; Walther, F. Direct current potential drop characterization of forming-induced pre-damage influence on bending fatigue behavior of 16MnCrS5. Procedia Structural Integrity 46 (2023) 94-98. https://doi.org/10.1016/j.prostr.2023.06.016

Müller, M.; Weiser, I.; Herrig, T.; Bergs, T. Influence of process parameters and process set-up on damage evolution during stretch drawing of u-shaped profiles. Material Forming - ESAFORM (2023) https://doi.org/10.21741/9781644902479-79

Böddecker, M.; Menzel, A.; A large-strain thermoplasticity model including recovery, recrystallisation and grain-size effects. 93^rd Annual Meeting of GAMM

Feike, K.; Langenfeld, K.; Kurzeja, P.; Mosler, J.; On the impact of loading paths on damage evolution. 93^rd Annual Meeting of GAMM

Guhr, F., Barthold, F.-J. Numerical Optimisation of Damage in Forming Processes. 93^rd Annual Meeting of GAMM

Guhr, F., Barthold, F.-J. Geometric and material sensitivity analysis for regularised ductile damaging materials. 15th World Congress in Structural and Multidisciplinary Optimization

Gitschel, R.; Hering, O.; Schulze, A.; Tekkaya, A. E. Controlling Damage Evolution in Geometrically Identical Cold Forged Parts by Counter Pressure. Manufacturing Science and Engineering Conference (MSEC)

Gitschel, R.; Gebhard, J.; Tekkaya, A. E. Modelling Void Area Fractions in Cold Forged Parts. ICFG Plenary Meeting

Guhr, F., Barthold, F.-J. Damage optimisation in forming processes using Abaqus as FE solver. 10th GACM Colloquium on Computational Mechanics for Young Scientists from Academia and Industry

Müller, M., Herrig, T., Bergs, T. Numerical analysis of the load paths and the resulting damagemevolution during deep drawing of dual-phase steel IDDRG 2023

Lennemann, P., Grodotzki, J., Tekkaya, A. E., Controlling the Damage Evolution in Roll Forming of a V-Section by Elastomer Rollers. ICTP 2023

Müller, M., Fehlemann, N., Herrig, T., Lenz, D., Könemann, M., Bergs, T., Münstermann, S. Forming limit of dual phase steel: an experimental and numerical investigation. ICTP 2023

Sommer, J., Müller, M., Herrig, T., Bergs, T. Simulative and Empirical Investigation of Test Specimen Geometries for the Determination of Forming Limit States in the Tensile-Compression Range for Austenitic Stainless Steel Foil Material. ICTP 2023

Fehlemann, N., Czempas, D., Münstermann, S., Hirt, G., Könemann, M. Investigation of damage-controlling process-parameters during cold rolling on the impact toughness of DP800 steel under crash loading stress states. ICTP 2023

Heiser, A., Gerlach, J., Bailly, D., Hirt, G. Investigation of the Influence of Static Recrystallization on Void Evolution After Hot Compression Forming WGP 2023

Tekkaya, A. E., Effect of Loading Path on Damage in Metal Forming: Experimental Findings from IUL, Tongji University, Shanghai, China 2023

2022

Dunlap, A.; Aretz, A.; Schwedt, A. Investigating the influence of electronic excitation energy on the quantification of ductile damage in case hardening steel using automated EDX particle analysis in scanning electron microscopy. Materials Science and Engineering (MSE 2022) Congress.

Lücker, L.; Lingnau, L. A.; Walther, F. Non-destructive direct current potential drop assessment of forming-induced pre-damage in AISI 5115 steel. Procedia Structural Integrity 42 (2022) 368-373. https://doi.org/10.1016/j.prostr.2022.12.046

Lingnau, L. A.; Lücker, L.; Walther, F., 2022. Resistometriebasierte Charakterisierung der umform- und ermüdungsinduzierten Schädigung im Einsatzstahl 16MnCrS5. Werkstoffprüfung 2022 - Werkstoffe und Bauteile auf dem Prüfstand. ISBN 978-3-88355-430-3 (2022) 406-411

Medghalchi, S.; Karimi, E.; Kerzel, U.; Korte-Kerzel, S. Three-dimensional characterization of damage in dual phase steels with deep learning. ECI Symposium Series (2022) Nanomechanical Testing in Materials Research and Development VIII. https://dc.engconfintl.org/nanomechtest_viii/18

Medghalchi, S.; Karimi, E.; Berkels, B; Kerzel, U.; Korte-Kerzel, S. Three-dimensional characterisation of deformation-induced damage in dual phase steel using deep learning. 11th European Solid Mechanics Conference (2022). https://doi.org/10.1016/j.matdes.2023.112108

Müller M., Weiser I., Herrig T., Bergs T., 2022. Numerical Prediction of the Influence of Process Parameters and Process Set-Up on Damage Evolution during Deep Drawing of Rectangular Cups. SFU/ICAFT 2022, https://doi.org/10.3390/engproc2022026006

Wollenweber, M; Kusche, C; Gibson, J; Korte- Kerzel, S. On the mechanical properties and deformation mechanisms of manganese sulphide inclusions. ECI Symposium Series (2022) Nanomechanical Testing in Materials Research and Development VIII. https://doi.org/10.1016/j.matdes.2020.108801

Tekkaya, A.E., From Formability to Useability: Damage Controlled Forming Processes, Society of Engineering Science (SES), Annual Technical Meeting, College Station, Texas

Tekkaya, A.E., Damage is not failure: Controlling damage in metal forming, Dano não é falha: controlando o dano em conformação mecânica, 41st SENAFOR, 25th International Forging Conference, Porto Alegre, Brazil

Tekkaya, A. E., Damage in Metal Forming: Enhancing Product Properties, Graduate Institute of Ferrous & Energy Materials Technology, Pohang University of Science and Technology, Pohang, South Korea

2021

Dunlap, A.; Aretz, A.; Schwedt, A. Investigation of the ductile damage - dislocation interaction in case hardening steel using Electron Channeling Contrast Imaging. Microscopy Conference (2021)

Fehlemann, N., Sparrer, Y., Pütz, F., Könemann, M., Münstermann, S., 2021. Influence of synthetically generated inclusions on the stress accumulation and concentration in X65 pipeline steel. In: IOP Conference Series: Materials Science and Engineering, Vol. 1157, 40th International Deep-Drawing Research Group Conference (IDDRG 2021), https://doi.org/10.1088/1757-899X/1157/1/012056

Meya, R., Lennemann, P., Rethmann, P., Tekkaya, A. E., 2021. Analyse und Kontrolle der Schädigungsentwicklung beim Biegen von hochfesten Werkstoffen. Ilmenauer Federntag 2021, Ilemnau, Germany

Nick, M., Liebsch, C., Müller, M., Weiser, I.F., Hirt, G., Bergs, T., 2021. Influence of pass reduction in cold rolling on damage evolution in deep drawing of rotationally symmetric cups. In: IOP Conference Series: Materials Science and Engineering, Vol. 1157, 40th International Deep-Drawing Research Group Conference (IDDRG 2021), https://doi.org/10.1088/1757-899X/1157/1/012050

2020

Clausmeyer, T., Schowtjak, A., Wang, S., Gitschel, R., Hering, O., Pavliuchenko, P., Lohmar, J., Ostwald, R., Hirt, G., Tekkaya, A. E., 2020. Prediction of Ductile Damage in the Process Chain of Caliber Rolling and Forward Rod Extrusion. In: Procedia Manufacturing 47, 23^rd International ESAFORM Conference on Material Forming, Digital, pp. 649-655. https://doi.org/10.1016/j.promfg.2020.04.201

Li, X., Wang, S., Lohmar, J., Hirt, G., 2020. Design of caliber rolls incorporating load path dependent damage evolution. In: Procedia Manufacturing 47, 23^rd International ESAFORM Conference on Material Forming, pp. 643-648. https://doi.org/10.1016/j.promfg.2020.04.198

Nick, M., Feuerhack, A., Bergs, T., Clausmeyer, T., 2020. Numerical Investigation of Damage in Single-step, Two-step, and Reverse Deep Drawing of Rotationally Symmetric Cups from DP800 Dual Phase Steel. In: Procedia Manufacturing 47, 23^rd International ESAFORM Conference on Material Forming, Digital, pp. 636-642. https://doi.org/10.1016/j.promfg.2020.04.195

Pütz, F., Henrich, M., Roth, A., Könemann, M., Münstermann, S., 2020. Reconstruction of microstructural and morphological parameters for RVE simulations with machine learning. In: Procedia Manufacturing 47, 23^rd International ESAFORM Conference on Material Forming, Digital, pp. 629-635. https://doi.org/10.1016/j.promfg.2020.04.193

2019

Dunlap, A., Aretz, A., Schwedt, A., 2019. Large Chamber-SEM in-situ investigation of bending induced deformation mechanisms (Poster). In: Proceedings of Microscopy Conference 2019, Berlin, Germany, p. 479.

Fohrmeister, V., Klinge, S., Mosler, J., 2019. On the implementation of rate-independent gradient-enhanced crystal plasticity theory. In: Proceedings in Applied Mathematics and Mechanics 19 (1), (90^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Vienna, Austria, DOI: 10.1002/pamm.201900461.

Fohrmeister, V., Mosler, J., 2019. An efficient implementation of gradient-enhanced crystalplasticity models. In: Proceedings of the 8^th GACM Colloquium on Computational Mechanics, Kassel, Germany, pp. 323 - 326. https://doi.org/10.19211/KUP9783737650939

Guhr, F., Barthold, F.-J., 2019. Load Optimisation for Damage Reduction and Fracture Prevention. In: Proceedings of the 8^th GACM Colloquium on Computational Mechanics, Kassel, Germany, pp. 55-58. https://doi.org/10.19211/KUP9783737650939

Guhr, F., Barthold F.-J., Meya, R., Tekkaya, A. E., 2019. Load Optimisation for Air Bending in the Context of Damage Reduction. In: Proceedings in Applied Mathematics and Mechanics 19 (1), (90^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Vienna, Austria, DOI: 10.1002/pamm.201900179.

Heitbreder, T., Mosler, J., 2019. On higher-order interface models. In: Proceedings in Applied Mathematics and Mechanics 19 (1), (90^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Vienna, Austria, DOI: 10.1002/pamm.201900315.

Hering, O., Kolpak, F., Dahnke, C., Tekkaya, A. E., 2019. High Strain Flow Curves by Mechanical Tests on Specimens Pre-strained by Forward Rod Extrusion. In: Proceedings of 52^nd ICFG Plenary Meeting 2019, Donostia-San Sebastián, Spain, pp. 149-156.

Imran, M., Afzal, M. J., Bambach, M., 2019. Analysis of competition between onset of dynamic recrystallization and damage nucleation during hot forming. In: Proceedings of NUMIFORM 2019: The 13^th International Conference on Numerical Methods in Industrial Forming Processes, Portsmouth, USA, pp. 231-234.

Imran, M., Szyndler, J., Afzal, M. J., Bambach, M., 2019. Towards the damage evaluation for hot forming process using Gurson-Tvergaard-Needleman – coupled to dynamic recrystallization. In: AIP Conference Proceedings 2113, Proceedings of the 22^nd International ESAFORM Conference on Material Forming, Vitoria-Gasteiz, Spain, DOI: 10.1063/1.5112741.

Langenfeld, K., Möhring, K., Walther, F., Mosler, J., 2019. Regularizational approach for modeling ductile damage. In: MATEC Web of Conferences 300 (12^th International Conference on Multiaxial Fatigue and Fracture), Bordeaux, France, DOI: 10.1051/matecconf/201930008008.

Langenfeld, K., Möhring, K., Walther, F., Mosler, J., 2019. On the regularization for ductile damage models. In: Proceedings in Applied Mathematics and Mechanics 19 (1), (90^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Vienna, Austria, DOI: 10.1002/pamm.201900003.

Liebsch, C., Li, X., Lohmar, J., Hirt, G., 2019. Influence of process conditions and pore morphology on the closure rate of pores in hot rolling of steel. In: Proceedings of NUMIFORM 2019: The 13^thInternational Conference on Numerical Methods in Industrial Forming Processes, Portsmouth, USA, pp. 271-274. https://arxiv.org/abs/2005.08019

Münstermann, S., Sparrer, Y., Yao, Y., Lian, J., Meya, R., Clausmeyer, T., Tekkaya, A. E., 2019. Effect of plastic strain and ductile damage on elastic modulus of multiphase steel and its impact on springback prediction. In: AIP Conference Proceedings 2113, Proceedings of the 22^nd International ESAFORM Conference on Material Forming, Vitoria-Gasteiz, Spain, DOI: 10.1063/1.5112739.

Nick, M., Mannens, R., Trauth, D., Bergs, T., 2019. Load path modelling in single-step deep drawing of rotationally symmetric cups. In: Procedia Manufacturing 29 (18^th International Conference on Sheet Metal), Leuven, Belgium, pp. 520-517. https://doi.org/10.1016/j.promfg.2019.02.170

Pütz, F., Tixier, A., Könemann, M., Lian, J., Münstermann, S., 2019. Unterschiede in der Mikrostruktur von Dualphasenstählen und deren Einfluss auf die Materialeigenschaften. In: Bruchmechanische Werkstoff- und Bauteilbewertung: Beanspruchungsanalyse, Prüfmethoden und Anwendungen, 51. Tagung des DVM-Arbeitskreises Bruchmechanik und Bauteilsicherheit Aachen, Germany, pp. 229-238.

Schowtjak, A., Kusche, C., Meya, R., Al-Samman, T., Korte-Kerzel, S., Tekkaya, A. E, Clausmeyer, T., 2019. Prediction of void evolution in sheet bending based on statistically representative microstructural data for the Gurson-Tvergaard-Needleman model. In: Proceedings of NUMIFORM 2019: The 13^th International Conference on Numerical Methods in Industrial Forming Processes, Portsmouth, USA, pp. 311-314.

2018

Bergs, T., Nick, M., Feuerhack, A., Trauth, D., Klocke, F., 2018. Numerical-experimental Investigation of Load Paths in DP800 Dual Phase Steel During Nakajima Test. In: AIP Conference Proceedings 1960, Proceedings of the 21^stInternational ESAFORM Conference on Material Forming, Palermo, Italy, DOI: 10.1063/1.5035047.

Bergs, T., Nick, M., Trauth, D., Klocke, F., 2018. Damage Evolution in Nakajima Tests of DP800 Dual Phase Steel. In: IOP Conference Series: Materials Science and Engineering 418 (37^th International Deep-Drawing Research Group Conference), Waterloo, Canada. https://doi.org/10.1088/1757-899X/418/1/012048

Fohrmeister, V., Díaz, G., Mosler, J., 2018. A strong discontinuity approach to crystal plasticity theory. In: Proceedings in Applied Mathematics and Mechanics 18 (1), (89^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Munich, Germany, DOI: 10.1002/pamm.201800295.

Guhr, F., Barthold, F.-J., Menzel, A., Sprave, L., Liedmann, J., 2018. Sensitivity Analysis of a Non-Local, Gradient Enhanced Damage Model. In: Proceedings in Applied Mathematics and Mechanics 18 (1), (89^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Munich, Germany, DOI: 10.1002/pamm.201800147.

Heitbreder, T., Ottosen, N. S., Ristinmaa, M., Mosler, J., 2018. Investigation of size effects due to material interfaces. In: Proceedings in Applied Mathematics and Mechanics 18 (1), (89^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Munich, Germany, DOI: 10.1002/pamm.201800072.

Hering O., Dahnke, C., Tekkaya, A. E., 2018. Influence of Damage on the Properties of Cold Forged Parts. In: Proceedings of 51^st ICFG Plenary Meeting 2018, Columbus, USA, pp. 137-144.

Hering, O., Dahnke, C., Tekkaya, A. E., 2018. Analysing Damage Evolution in Cold Forging by Means of Triaxiality and Lode Parameter. In: Proceedings of the 8^th JSTP International Seminar on Precision Forging, Nagoya, Japan, pp. 121-124.

Imran, M., Bambach, M., 2018. Towards the damage evaluation using Gurson-Tvergaard-Needleman (GTN) model for hot forming processes. In: AIP Conference Proceedings 1960, Proceedings of the 21^st International ESAFORM Conference on Material Forming, Palermo, Italy, DOI: 10.1063/1.5035063.

Klinge, S., Aygün, S., Bambach, M., 2018. Extended simulations of the roll bonding process. In: Proceedings in Applied Mathematics and Mechanics 18 (1), (89^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Munich, Germany, DOI: 10.1002/pamm.201800257.

Langenfeld, K., Junker, P., Mosler, J., 2018. On the rate-dependent regularization for damage modeling. In: Proceedings in Applied Mathematics und Mechanics 18 (1), (89^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Munich, Germany, DOI: 10.1002/pamm.201800058.

Liebsch C., Hirt G., 2018. Numerical investigation on damage evolution and void closure in hot flat rolling. In: Proceedings of the 11^th Forming Technology Forum Zurich 2018, Zurich, Switzerland, pp. 79-84. https://ethz.ch/content/dam/ethz/special-interest/mavt/virtual-manufacturing/ivp-dam/News_Events/ftf2018/FTF2018_Proceedings_digital_release_2018-10-23.pdf

Liedmann, J., Barthold, F.-J., 2018. Sensitivity Analysis of Elastoplastic Structural Response Regarding Geometry and External Loads. Proceedings of the 6^th European Conference on Computational Mechanics, 7^th European Conference on Computational Fluid Dynamics, Glasgow, United Kingdom.

Meya, R., Löbbe, C., Tekkaya, A. E., 2018. Stress State Control by a Novel Bending Process and its Effect on Damage Evolution. In: Proceedings of the 13^th Manufacturing Science and Engineering Conference, College Station, USA, DOI: 10.1115/MSEC2018-6349.

Münstermann, S., Pütz, F., Könemann, M., Brinnel, V., Lian, J., 2018. Schädigungsmechanismen in mehrphasigen Karosseriestählen. In: Bruchmechanische Werkstoff- und Bauteilbewertung: Beanspruchungsanalyse, Prüfmethoden und Anwendungen, 50. Tagung des DVM-Arbeitskreises Bruchmechanik und Bauteilsicherheit Paderborn, Germany, pp. 39-49.

Pütz, F., Könemann, M., Lian, J., Münstermann, S., 2018. Einfluss der Materialschädigung auf die Kantenrissempfindlichkeit von Dualphasenstählen. In: Bruchmechanische Werkstoff- und Bauteilbewertung: Beanspruchungsanalyse, Prüfmethoden und Anwendungen, 50. Tagung des DVM-Arbeitskreises Bruchmechanik und Bauteilsicherheit, Paderborn, Germany, pp. 49-59.

Samfaß, L., Walther, F., 2018. Einfluss umformtechnisch induzierter Schädigung auf das Ermüdungsverhalten und die magnetischen Werkstoffeigenschaften des Stahls 16MnCrS5. In: Werkstoffe und Bauteile auf dem Prüfstand, 36. Tagung Werkstoffprüfung, Düsseldorf, Germany, pp. 39-44.

Sprave, L., Menzel, A., 2018. Gradient-enhanced ductile damage – a finite deformation framework with application to DP800. In: Proceedings in Applied Mathematics and Mechanics 18 (1), (89^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Munich, Germany, DOI:10.1002/pamm.201800232.

Tekkaya, A. E., Schowtjak, A., Clausmeyer, T., 2018. Damage in Metal Forming. In: Proceedings of the 8^thJSTP International Seminar on Precision Forging, Nagoya, Japan, pp. 21-26.

Wang, S., Pöplau, J., Grüber, M., Hirt, G., 2018. Finite element analysis of caliber rolling process to investigate possibilities to influence the damage evolution. In: Proceedings of the 11^th Forming Technology Forum Zurich 2018, Zurich, Switzerland, pp. 108-112. https://ethz.ch/content/dam/ethz/special-interest/mavt/virtual-manufacturing/ivp-dam/News_Events/ftf2018/FTF2018_Proceedings_digital_release_2018-10-23.pdf

2017

Bambach, M., Klinge, S., 2017. Consistency of dynamic recrystallization models from the perspective of physical metallurgy and continuum mechanics. In: Proceedings in Applied Mathematics and Mechanics 17 (1), (88^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Weimar, Germany, pp. 395-396.

Barthold, F.-J., Liedmann, J., 2017. Remarks on Variational Sensitivity Analysis of Elastoplastic Deformations. In: AIP Conference Proceedings 1896, Proceedings of the 20^th International ESAFORM Conference on Material Forming, Dublin, Ireland, DOI: 10.1063/1.5008125.

Fohrmeister, V., Bartels, A., Mosler, J., 2017. Variational constitutive updates based on hyper-dual numbers – theory of gradient enhanced thermoplasticity. In: Proceedings of the 7^th GACM Colloquium on Computational Mechanics, Stuttgart, Germany, pp. 765-768.

Hojda, S., Sturm, K. J. X., Teller, M., Hirt, G., 2017. Remeshing framework for a multiphysics FEM solver exemplified by a damage sensitive extrusion process. In: Proceedings of the 37^thSENAFOR, Porto Alegre, Brazil.

Hojda, S., Sturm, K. J. X., Terhorst, M., Klocke, F., Hirt, G., 2017. Damage dependent material properties in a Finite Element Simulation of a hybrid forward extrusion process. In: Procedia Engineering 207, Proceedings of the International Conference on the Technology of Plasticity, ICTP 2017, Cambridge, United Kingdom.

Meya, R., Löbbe, C., Tekkaya, A. E., 2017. New bending process with superposition of radial stresses for damage control. In: Proceedings of the 10^th Forming Technology Forum Model Based Control for Smart Forming Processes, Enschede, The Netherlands, pp. 81-85.

Münstermann, S., Lian, J., Pütz, F., Könemann, M., Brinnel, V., 2017. Comparative Study on Damage Evolution during Sheet Metal Forming of Steels DP600 and DP1000. In: Journal of Physics: Conference Series, 896, Proceedings of the 36^thIDDRG Conference, Munich, Germany, DOI: 10.1088/1742-6596/896/1/012074.

Schowtjak, A., Clausmeyer, T., Tekkaya, A. E., 2017. Analysis of Damage and Fracture Formulations in Cold Extrusion. In: Proceedings of the XIV International Conference on Computational Plasticity - Fundamentals and Applications COMPLAS 2017, Barcelona, Spain, pp. 196-207.

Sprave, L., Menzel, A., 2017. Regularisation of gradient-enhanced damage coupled to Finite Plasticity. In: Proceedings of the 7^th GACM Colloquium on Computational Mechanics, Stuttgart, Germany, pp. 769-772.

Sprave, L., Menzel, A., 2017. A Multisurface Model for Gradient-Enhanced Damage Coupled to Finite Plasticity. In: Proceedings in Applied Mathematics and Mechanics, 17 (1), (88^th Annual Meeting of the International Association of Applied Mathematics and Mechanics), Weimar, Germany, pp. 465-466, DOI: 10.1002/pamm.201710202.