[HTML][HTML] Counterexample-trained neural network model of rate and temperature dependent hardening with dynamic strain aging

X Li, CC Roth, C Bonatti, D Mohr - International Journal of Plasticity, 2022 - Elsevier
Constitutive models dealing with the thermal and visco-plasticity of metals have seen wide
applications in the automotive industry. A basic plasticity and fracture characterization of a …

[HTML][HTML] Neural network based rate-and temperature-dependent Hosford–Coulomb fracture initiation model

X Li, CC Roth, D Mohr - International Journal of Mechanical Sciences, 2023 - Elsevier
The accurate description of the strain rate and temperature dependent response of metals is
a perpetual quest in crashworthiness and forming applications. In the present study …

Rate-and temperature-dependent plasticity of additively manufactured stainless steel 316L: Characterization, modeling and application to crushing of shell-lattices

X Li, CC Roth, T Tancogne-Dejean, D Mohr - International Journal of Impact …, 2020 - Elsevier
A combined numerical and experimental investigation is carried out on the quasi-static and
high strain rate response of additively manufactured stainless steel 316L obtained through …

[HTML][HTML] Semi-automatic miniature specimen testing method to characterize the plasticity and fracture properties of metals

T Beerli, CC Roth, D Mohr - Acta Materialia, 2024 - Elsevier
Miniature-testing is essential to characterize the plastic response of materials for which the
extraction of conventional full-size specimens is impossible. Examples are weld regions with …

[HTML][HTML] Ductile damage of AA2024-T3 under shear loading: Mechanism analysis through in-situ laminography

T Tancogne-Dejean, CC Roth, TF Morgeneyer… - Acta Materialia, 2021 - Elsevier
The mechanisms leading to fracture of aluminum alloy AA2024-T3 under shear loading are
investigated via X-ray synchrotron laminography. A 1mm-thick flat double-gage section …

[HTML][HTML] Rate-dependent strength and ductility of binder jetting 3D-printed stainless steel 316L: Experiments and modeling

T Tancogne-Dejean, CC Roth, D Mohr - International Journal of …, 2021 - Elsevier
Binder-jetting is an additive manufacturing process for metals which involves the rapid
making of a binder bonded metal powder part followed by the removal of the binder and …

[HTML][HTML] Using miniature experiments to reveal strength gradients in battery casings

T Tancogne-Dejean, CC Roth, V Grolleau… - International Journal of …, 2024 - Elsevier
Complex metallic structures are often manufactured through multi-step forming or casting
processes that induce severe mechanical property variations within the final part. Instead of …

Evaluation of the VDA 238–100 tight radius bend test for plane strain fracture characterization of automotive sheet metals

J Noder, A Abedini, C Butcher - Experimental Mechanics, 2020 - Springer
Accurate characterization of the fracture limit in plane strain tension of automotive sheet
metals is critical for the design and crash performance of structural components. Plane strain …

Specimen geometry design for plasticity and fracture characterization of sheet metal under high testing speed and various stress states

C Zeng, X Fang - Thin-Walled Structures, 2023 - Elsevier
To model a vehicle crash event using the finite element (FE) method, accurate material
properties of automotive sheet metals at high strain rates and various stress states need to …

New methodologies for fracture detection of automotive steels in tight radius bending: application to the VDA 238–100 V-bend test

J Noder, J Dykeman, C Butcher - Experimental Mechanics, 2021 - Springer
Background The VDA 238–100 tight radius V-bend test can be used to efficiently
characterize the bendability and fracture limits of sheet metals in severe plane strain …