A5102812546- Welding Techniques and Residual Stresses
- Additive Manufacturing Materials and Processes
- Advanced Welding Techniques Analysis
- Laser Material Processing Techniques
- Microstructure and Mechanical Properties of Steels
- Non-Destructive Testing Techniques
- Erosion and Abrasive Machining
- Hydrogen embrittlement and corrosion behaviors in metals
- High-Temperature Coating Behaviors
- Advanced Machining and Optimization Techniques
- Metallurgical Processes and Thermodynamics
- Metal Alloys Wear and Properties
- Metallurgy and Material Forming
- Additive Manufacturing and 3D Printing Technologies
- Heat Transfer Mechanisms
- Surface Treatment and Residual Stress
- High Entropy Alloys Studies
- Surface Roughness and Optical Measurements
- Engineering Applied Research
- Advanced Surface Polishing Techniques
- Robotic Path Planning Algorithms
- High-Velocity Impact and Material Behavior
- Particle Dynamics in Fluid Flows
- Advanced machining processes and optimization
- Tribology and Lubrication Engineering
Korea Institute of Machinery and Materials
2017-2025
Korea Maritime and Ocean University
2023
Pusan National University
2022
Pukyong National University
2022
Korea Advanced Institute of Science and Technology
2009-2017
Indian Institute of Technology Roorkee
2017
Korea Atomic Energy Research Institute
2015
Hyundai Heavy Industries (South Korea)
2014
Research Institute of Industrial Science and Technology
2009
The autogenous manual gas tungsten arc welding (GTAW) process was used for cladding austenitic stainless steel 316L using a single pass with various contact tip-to-work distances (CTWDs). Immersion and electrochemical tests were to evaluate the corrosion resistance of welded specimens, microstructural analysis conducted investigate chemical composition molten pool heat-affected zone welding. key findings this study indicate that improved under CTWD 5 mm due optimal distribution ferrite...
The pulsed laser welding of Al ribbon to Cu sheet was investigated for the electrical interconnections in power electronic modules. various experimental conditions with different powers, scan speeds, and heat inputs were employed obtaining defect-free Al/Cu joints. During welding, intermetallic compounds formed zone. An electron probe microanalyzer transmission microscopy confirmed phases compounds, which found be Al4Cu9, Al2Cu, AlCu, etc. computational fluid dynamics simulation revealed...
In this study, the laser cutting characteristics were analyzed according to shape of back side specimen, and compared thickness edge (10 mm, 20 30 mm). A Yb-YAG was used in target STS304 with a 50 process using high-speed camera. experiment, it found through image analysis that performance excellent at mm edge. order analyze reason, thermal conduction (numerical simulation) performed, confirmed thicker caused preheating effect during due large amount heat accumulation. This can be as...
This study investigated how welding affects the thermal deformation of square cells produced for casks, which are dry storage containers spent nuclear fuel. We aimed to minimize structural by utilizing STS316L as material cells. explored a method subdividing and joining them through butt welding. Keeping upper plate thickness constant, GTA was conducted while varying column’s wall thickness, followed measurement with laser vision sensor. The heat conduction strain were then calculated using...
The dynamics of high-pressure gas flow injected through a nozzle during thermal cutting process has an important effect on performance. In this study, actual condition inside cut kerf plasma sample was simulated by considering various geometric features the kerf, such as width difference and length between top bottom surfaces. A prototype shape fabricated using transparent material. shadowgraph from observed Schlieren method. addition, image processing performed images obtained with method...
Laser shock peening creates compressive residual stress on the surface of material, reducing corrosion cracking and increasing fatigue life. FE simulation laser is an effective way to determine mechanical effects material. In conventional simulations peening, explicit analysis used while pressure loads are applied switched into implicit dissipate kinetic energy. this study, static damping was adopted energy without conversion analysis. Simulation a single multiple shocks performed,...