Myoung‐Gyu Lee

Secondary Twinning–Mediated Anisotropy in Ultra-Thin Commercially Pure Titanium (CP-Ti) Sheets: A Crystal Plasticity Approach

Jehyun You, Kyung Mun Min, Seonghwan Choi, Jong-Hwa Hong et autres

kr (code pays fourni par la source)

Heterogeneous deformation behavior and workability of Mg/Al bimetals during thermomechanical processing: A reinforcement learning-based process regulation method

Jinchuan Long, Jianyu Li, Hongning Wen, Yong Hou et autres

cn, hk, kr (code pays fourni par la source)

Phase-resolved dynamic restoration and processing stability of Ti–6Al–4V across the α–β transition during hot deformation

Seo Yeon Jo, Yeontae Kim, Jinheung Park, Myoung‐Gyu Lee

The hot deformation behavior of Ti-6Al-4V was examined using strain-compensated Arrhenius-type constitutive modeling, processing map analysis, and EBSD-based microstructural characterization. Isothermal compression tests were performed at 850-1000 °C, and at discrete strain rates of 0.001, 0.01, 0.1, and 1 s -1 . …

kr (code pays fourni par la source)

Enhanced thermal stability of direct cooling heatsink bonding for power electronics using instantaneous laser soldering: Experimental, FEM, and CFD investigation

Ha-Young Yu, Byeongchan Kim, YehRi Kim, Junwoo Park et autres

kr (code pays fourni par la source)

Surface topology-based wear evolution model integrated with multiscale frictional contact in finite element analysis

Jung Yun Won, Hoejeong Jeong, J. Kyeong, Woojeong Oh et autres

kr (code pays fourni par la source)

Synergistic Meta‐Perforated Substrates for Hypersensitive Crack‐Based Strain Sensors

Jae‐Hwan Lee, Woo‐Jin Lee, Seungmin Kang, Jung Yun Won et autres

Crack‐based strain sensors offer ultrahigh sensitivity, yet their response at infinitesimal strains remains limited. Previous efforts to enhance sensitivity and piezoresistive behavior rely on controlling crack morphology or inducing stress concentration around predefined structural features. Here, we introduce a meta‐perforated substrate that …

kr (code pays fourni par la source)

Deep-learning-assisted extrusion process design of polypropylene/carbon black sheet with varying viscosity

Sungbi Lee, Eunjung Kim, Nam Ryeol Kim, Cheol-Min Yang et autres

Abstract Minor changes in process variables, such as temperature, processing speed, and cooling rate, can significantly impact the properties of the final product in a sheet extrusion process. As a result, many optimization efforts focus on each of these variables. This study …

kr (code pays fourni par la source)

Al-based functionally graded super-intermetallic compounds for the turbine blade of a high-performance jet engine

Wonjong Jeong, Jeongho Yang, Joon Phil Choi, Ji Yong Hwang et autres

Abstract An Al-based functionally graded structure is fabricated, featuring a discrete compositional gradient of 48.1Al47.9Ti4.0V/73.7Al24.2Ti2.1V/89.5Al10.0Ti0.5V in atomic percentage. This structure is produced via dual-hybrid laser powder bed fusion and directed energy deposition combined with computer numerical control milling. Particularly remarkable is the …

kr, sg, de, ca, us (code pays fourni par la source)

Integrated experimental and numerical investigation of fracture onset in automotive components using finite element analysis

Seojun Hong, Jin‐Woo Lee, J. Kyeong, Jung Yun Won et autres

• Hybrid digital image correlation-finite element method quantifies fracture in full-scale brake caliper parts. • Virtual path generation enables model calibration with limited test data. • Hosford-Coulomb parameters optimized via two cost function strategies. • Diverse specimen designs achieve broad stress triaxiality …

kr (code pays fourni par la source)

A GND-based back stress model for reverse loading in metal sheets with consideration of GNB

Gyu-Jang Sim, Soow-Wook Choi, Youngjae Kim, Chung An Lee et autres

Accurate prediction of springback and formability in sheet metal forming requires understanding reverse loading behavior under complex loading path changes, such as tension followed by compression. However, for ultra-thin sheets experimental characterization of such behavior is difficult due to compressive instability like …

Anisotropic plasticity identification: Integrated FE and sensitivity-based virtual fields method

Seojun Hong, Hyunki Kim, Myoung‐Gyu Lee

kr (code pays fourni par la source)

Constitutive modeling of nonlinear, anisotropic, time-dependent polymer friction composites

Youngjae Kim, Taehyun Kim, Hyunki Kim, Jung Yun Won et autres

kr (code pays fourni par la source)