Constitutive modeling of cellular-structured metals produced by additive manufacturing

J Kwon, GM Karthik, Y Estrin, HS Kim - Acta Materialia, 2022 - Elsevier
Computational modeling is essential in the development and application of metal additive
manufacturing (MAM). Most materials processed by laser or electron beam MAM exhibit a …

Tailoring microstructure with spatial heterogeneity in CoCrFeMnNi high-entropy alloy via laser surface relaxation

GH Gu, RE Kim, J Lee, HS Kim - Materials Science and Engineering: A, 2022 - Elsevier
The face-centered cubic single-phase CoCrFeMnNi equi-atomic HEA has excellent
mechanical properties in a wide temperature range, from cryogenic to room temperature …

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] 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 …

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 …

A new digital image correlation method for measuring wide strain range true stress–strain curve of clad materials

GH Gu, Y Kim, RE Kim, MH Seo, HS Kim - Metals and Materials …, 2023 - Springer
Accurate evaluation of the nonlinear hardening behavior (ie, wide strain range true stress–
strain curve) of developed materials as structural materials is essential because it is directly …

Parallel optimization of tridimensional deformation measurement based on correlation function constraints of a multi-camera network

G Zhang, L Wei, B Zhang, X Zhou, J Huo - Applied Optics, 2022 - opg.optica.org
This<? TeX 2pc 0pt?> study primarily investigates the low accuracy and redundant time-
consuming problem of speckle registration in the full-field deformation measurement of …

Improving the Mechanical Properties of Low‐Carbon Steel by In Situ Strain Aging

GH Gu, MH Seo, HS Kim - Advanced Engineering Materials, 2023 - Wiley Online Library
A novel continuous process that utilizes the concept of strain aging not only in the
automotive industry but also in structural materials as a whole is developed. The principle …

Experimental Study of Ultimate Deformation and Fracture of FRP with Stress Concentrators

EM Strungar, DS Lobanov… - PNRPU Mechanics …, 2024 - ered.pstu.ru
This work experimentally studies the influence of the scale effect on the processes of
initiation and development of defects in the region of stress concentrators in a structurally …

Effect of Strain Rate Sensitivity and Mesh Size on Constitutive Equation Fitting Using Finite Element Analysis

GH Gu, Y Kim, MH Seo, HS Kim - Transactions of Materials …, 2022 - koreascience.kr
The finite element analysis is one of the representative methods for predicting the materials
behavior for experiments that are difficult to perform empirically. Constitutive equations are …