METHOD AND SYSTEM OF PREDICTION RESIDUAL STRESSES

摘要

A method and a system for estimating residual stress are provided to estimate residual stress in products with single measurement without damaging the products. A system for estimating residual stress includes an optical part(100), an image obtaining part(110), an intensity extraction part(120), a path difference calculation part(140), a birefringence calculation part(150), and a standard data generating part(170). The optical part has optical elements, which form an optical array. The image obtaining part obtains an image to which light is emitted from the optical part. The intensity extraction part extracts intensity of a measurement point. The path difference calculation part calculates a path difference at the measurement point using the intensity. The birefringence calculation part calculates birefringence by dividing the path difference by the thickness of a measurement object.