デジタル画像相関法を用いた混合モードき裂の力学量評価法の検討

抄録

Cracks in mechanical structures lead to serious destruction accidents. High precision detection of cracks and evaluation of mechanical parameter of crack are important issues in order to prevent destruction accidents beforehand. In this research, we developed a crack detection method by digital correlation method which can evaluate the strain distribution from the surface image. With this method, stress intensity factors for mode I and mode II can be evaluated from the surface.