Mechanical engineer with more than 30 years of experience in stress analysis and fracture mechanics, this expert serves as an expert witness in matters involving crack propagation, residual stress measurement, and structural failure analysis. The expert’s work focuses on the evaluation of stress distributions in complex components and welded structures, including analysis of crack growth behavior, stress intensity factors, and fracture initiation in metallic and brittle materials. The expert earned a Ph.D. in Mechanical Engineering, as well as Master of Science and Bachelor of Science degrees in Mechanical Engineering.

Core areas of technical analysis include experimental and computational methods for measuring residual axial stresses in thin-walled cylinders, water-quenched parts, sandwich-brazed plates, omega-shaped ring welds on steel blocks, and gas-tungsten arc welded plates. The expert has developed and applied compliance and slitting methods for residual stress measurement, as well as finite element-based approaches for calculating stress intensity factors in two- and three-dimensional bodies without specialized crack-tip meshing. Documented engineering analyses include prediction of burst pressure in pipes with reduced wall thickness, evaluation of creep deformation effects, fatigue fracture assessment of U-bend steam generator tubes, and modeling of stress concentrations in longitudinally welded pipes.

The expert’s experience extends to component-level and system-level stress evaluations across multiple industries. Specific applications include bearing grooves of axles; pyrolytic carbon-coated graphite leaflets and valve housings in cardiac devices; deformation of pressurized natural gas pipelines; weld residual stress assessments for energy-sector equipment; and dynamic response measurements involving large structures and controlled load events. Accident and structural analyses have addressed ladder stability, bolt pre-stress effects, welded support strength, sliding bearing friction behavior, thermal stresses in turbine blades, and valve failures associated with freezing conditions.

In addition to analytical work, the expert has authored engineering reports concerning weld residual stresses, fatigue performance, vibration response, and fracture mechanics evaluations for industrial clients and research laboratories. The expert currently serves as a Senior Mechanical Engineer and has previously held positions as an Advisory Engineer, Senior Researcher, Associate Research Engineer, and Assistant Professor, reflecting extensive experience in technical leadership, stress analysis, and structural mechanics.