A5058736102- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Metal and Thin Film Mechanics
- Titanium Alloys Microstructure and Properties
- Advanced Welding Techniques Analysis
- Aluminum Alloy Microstructure Properties
- Intermetallics and Advanced Alloy Properties
- Advancements in Battery Materials
- Internet of Things and Social Network Interactions
- Mechanical Behavior of Composites
- Advanced machining processes and optimization
- Simulation and Modeling Applications
- Composite Material Mechanics
- Nuclear Materials and Properties
- Laser and Thermal Forming Techniques
- Graphite, nuclear technology, radiation studies
- Engineering Applied Research
- 3D Shape Modeling and Analysis
- Nanoporous metals and alloys
- High Entropy Alloys Studies
- Energy and Environmental Systems
- Additive Manufacturing and 3D Printing Technologies
- Cellular and Composite Structures
- Satellite Image Processing and Photogrammetry
- Graphene research and applications
Korea Institute of Industrial Technology
2007-2023
Graphite oxide was synthesized using various oxidation times and characterized by its physical chemical properties. The degree of the graphite systematically controlled via time up to 24h. Three phases interlayer distances were identified x-ray diffraction: pristine (3.4A), intermediate (4A) fully expanded (6A) phases. These distinguished an atomic ratio O/C, which occurred from different compositions epoxide, carboxyl hydroxyl groups. band gap oxides also tuned time, resulting in direct...
In this study, the flow stress of Ti-6Al-4V during hot deformation was modeled using a decision tree algorithm. Hot compression experiments for in Gleeble-3500 thermomechanical simulator were performed under strain rate 0.002–20 s–1 and temperatures 575–725 °C. After experiments, behavior modeled, first by traditional Arrhenius type equation, second utilizing artificial neural network, lastly, with aid While characteristics measured noticeably dependent on resulting temperature, modeling...
This study investigated defect formation and strain distribution in high Mg content Al-Mg alloys during normal rolling cross-rolling processes. The finite element analysis (FEA) revealed the presence of wave defects localization-induced zipper cracks cold rolling, which were confirmed by experimental results. concentration shear played a significant role crack propagation. However, influence was minimal process, exhibited relatively uniform distribution. Nonetheless, at edge center regions...
This study investigated defect formation and strain distribution in high-Mg-content Al-Mg alloys during normal rolling cross-rolling processes. The finite element analysis (FEA) revealed the presence of wave defects localization-induced zipper cracks cold rolling, which were confirmed by experimental results. concentration shear played a significant role crack propagation. However, influence was minimal process, exhibited relatively uniform distribution. Nonetheless, at edge center regions...
The brazing characteristics and bonding strengths of pure titanium joints are evaluated for brazed with Zr-17Ti-22Ni filler. Vacuum was conducted at temperatures between the melting filler metals beta-transition temperature 3 MPa pressure 5 min. Fracturing joint 1,093 K occurred before yielding during tensile tests owing to presence a serious segregation region containing harder more brittle [Ti, Zr]2Ni intermetallic compounds. In contrast, in above 1,113 K, fracturing base metal. yield...
Composite plates with holes are common in engineering applications, such as the automotive and aerospace industries. Three-dimensional braided carbon/epoxy polymers an advanced textile composite used various structures due to their high damage resistance relatively low manufacturing cost. When a polymer plate hole is it necessary know its mechanical behavior under loading conditions using analysis theory design better. However, effects of stress distribution shear deformation theories on...
Optimum processing conditions were obtained by evaluating the hot working behavior of commercially pure Ti using torsion tests. Hot tests conducted at temperatures ranging from 800 °C-1000 °C and strain rates 0.1-10 s-1. The flow curves show that peak stress increases as temperature decreases rate increases. optimum derived comparing activation energy maps. microstructure was characterized based on various regions map. for plastic deformation constitutive equation. differs depending...
Adhesion strength between a substrate and its oxide scale grown on hot-rolled low carbon steel was evaluated by hybrid numerical-experimental analysis of artificial spallation results. Interfacial fracture the reproduced scratch tester, in which onset interfacial identified examining mechanical responses along with microscopic observation. Critical traction at interface solved quantitatively numerical inverse finite element method. Influence residual stress adhesion also investigated....
In this study, the characteristics of commercially pure titanium (hereinafter referred as CP-Ti)/Steel joints, brazed with Zr–Ti–Ni amorphous filler metal were analyzed. The effects brazing temperature and time on microstructure joining strength CP-Ti/Steel joints investigated. It was observed that Ti diffused into stainless steel substrate formed a brittle reaction zone, which contained intermetallic compounds, such τ (Ti 5 Cr 7 Fe 17 ), (Fe, –Ni)Ti, FeTi, at joint interface. As increased,...