[HTML][HTML] Multi-scale investigation on local strain and damage evolution of Al1050/steel/Al1050 clad sheet

GH Gu, RE Kim, ES Kim, Y Kim, H Kwon, SY Ahn… - Journal of Materials …, 2022 - Elsevier
Macroscopic and microscopic mechanical properties, and damage behaviors of materials
should be evaluated through multi-scale investigations to allow for practical industrial …

Solid solution induced back-stress in multi-principal element alloys: experiment and modeling

Y Kim, P Asghari-Rad, J Lee, GH Gu, M Jang… - Materials Science and …, 2022 - Elsevier
The kinematic and isotropic hardening behavior was investigated for high and medium
entropy alloys with a single-phase face-centered cubic (FCC) structure. The cross-slip …

[HTML][HTML] Novel deep learning approach for practical applications of indentation

Y Kim, GH Gu, P Asghari-Rad, J Noh, J Rho… - Materials Today …, 2022 - Elsevier
The instrumented indentation technique has been investigated to efficiently evaluate the
mechanical responses of materials with few limitations on the shape and size of the …

Deformation behavior of lightweight clad sheet: Experiment and modeling

Y Kim, GH Gu, RE Kim, MH Seo, HS Kim - Materials Science and …, 2022 - Elsevier
In this study, three-layer Al/steel/Al clad metal sheets, which form a heterostructure
comprising separate soft (Al) and hard (steel) domains, were fabricated using aluminum and …

[HTML][HTML] Stress–strain curve estimation from load–depth curve of spherical indentation test based on finite element analysis and optimization

S Moon, S Hong, SW Kim, M Kim, SG Lee - Nuclear Engineering and …, 2024 - Elsevier
A stress–strain curve is one of the most important indicators of material properties for
characterizing constitutive behavior. It can be directly obtained from a conventional uniaxial …

Shear Deformation Behavior of Heterostructured Materials: Experimental and Numerical Analyses

GH Gu, SY Lee, MH Seo, J Jang, HS Kim - Metals and Materials …, 2024 - Springer
In this study, the heterogeneous strengthening behavior in shear deformation was
experimentally characterized and numerically modeled for the first time. Uniaxial tensile and …

Thickness effect on the microstructures, mechanical properties, and anisotropy of laser-powder bed fusion processed 316L stainless steel

SY Ahn, ES Kim, GM Karthik, KR Ramkumar… - Journal of Materials …, 2022 - Springer
Thin-wall structures are promising for lightweighting with widened applications in topology-
optimized lattice structures. Also, they are extensively used in heat exchangers because of …

[HTML][HTML] Determination of damage model parameters using nano-and bulk-scale digital image correlation and the finite element method

GH Gu, J Kwon, J Moon, H Kwon, J Lee, Y Kim… - Journal of Materials …, 2022 - Elsevier
In this study, the nano-to bulk-scale fracture behaviors of a dual phase (DP) steel were
investigated by combining a micro-digital-image-correlation (micro-DIC) technique and the …

[HTML][HTML] Determining reliable wide-strain-range equivalent stress–strain curves using 3D digital image correlation

GH Gu, SY Ahn, Y Kim, MH Seo, HS Kim - Journal of Materials Research …, 2022 - Elsevier
We propose a method for obtaining reliable wide strain range equivalent stress–strain
curves from tensile testing by applying 3D digital image correlation. Herein, both the front …

Observation of multi-scale damage evolution in transformation-induced plasticity steel under bending condition

GH Gu, MH Seo, DW Suh, HS Kim - Materials Today Communications, 2023 - Elsevier
Transformation-induced plasticity (TRIP) steel is a representative first-generation multi-
phase advanced high strength steel (AHSS) having superior mechanical properties mainly …