A5072596221- Metal Forming Simulation Techniques
- Microstructure and mechanical properties
- Metallurgy and Material Forming
- Microstructure and Mechanical Properties of Steels
- Aluminum Alloys Composites Properties
- Magnesium Alloys: Properties and Applications
- Metal and Thin Film Mechanics
- Titanium Alloys Microstructure and Properties
- High Temperature Alloys and Creep
- Nuclear Materials and Properties
- Advanced materials and composites
- Welding Techniques and Residual Stresses
- Composite Material Mechanics
- Laser and Thermal Forming Techniques
- Mineral Processing and Grinding
- Additive Manufacturing Materials and Processes
- Hydrogen embrittlement and corrosion behaviors in metals
- Elasticity and Material Modeling
- Fatigue and fracture mechanics
- High-Velocity Impact and Material Behavior
- Advanced Welding Techniques Analysis
- Non-Destructive Testing Techniques
- Innovations in Concrete and Construction Materials
- Optical measurement and interference techniques
- Aluminum Alloy Microstructure Properties
Changwon National University
2018-2024
Pohang University of Science and Technology
2012-2017
Clemson University
2016
National Institute of Standards and Technology
2015-2016
University of Maryland, College Park
2016
Titanium has a significant potential for the cryogenic industrial fields such as aerospace and liquefied gas storage transportation due to its excellent low temperature properties. To develop advance technologies in industries, it is required fully understand underlying deformation mechanisms of Ti under extreme environment. Here, we report study lattice behaviour grain families Grade 2 CP-Ti during in-situ neutron diffraction test tension at temperatures 15-298 K. Combined with intensity...
The mechanical behavior of a magnesium alloy E-form under bending was investigated using the elasto-visco-plastic polycrystal model (ΔEVPSC) and its finite element (FE) implementation (ΔEVPSC-FE) developed in Jeong et al. Tomé. crystallographic orientation distribution (COD) obtained from X-ray diffraction used to represent initial texture, Voce hardening parameters were calibrated by fitting uniaxial tension compression flow stress curves. A quasi-static FE analysis miniaturized V-bending...
A rate-dependent self-consistent crystal plasticity model was incorporated with the Marciniak–Kuczyński in order to study effects of anisotropy on forming limits BCC materials. The computational speed improved by a factor 24 when running simulations for several strain paths parallel. This speed-up enabled comprehensive investigation various textures, such as , and fibers uniform (random) texture. These demonstrate that crystallographic texture has significant (both positive negative)...
We propose a numerically stable and computationally efficient elasto-visco-plastic self-consistent (VPSC) crystal plasticity model, where the effect of elasticity on visco-plasticity is introduced as perturbation to visco-plastic regime. The enters fictitious eigen-strain rate derived from elastic inclusion problem. As consequence, numerical efficiency VPSC model (Lebensohn Tomé 1993 Acta Metall. Mater. 41 2611–2624) retained, with added capability predicting both, strain components in...
X-ray diffraction techniques have been developed to measure flow stresses of polycrystalline sheet metal specimens subjected large plastic deformation. The uncertainty in the measured stress based on this technique has not quantified previously owing lack an appropriate method. In article, propagation four selected elements experimental error is studied basis elasto-viscoplastic self-consistent modeling framework: (1) counting statistics error; (2) range tilting angles use; (3) use a finite...