画像相関法によるひずみ計測の検出限界とその事例

抄録

Detection limits of strain measurement by digital image correlation method (DIC) is investigated. Strain and strain rate distributions of stationary non-deformed object are measured by DIC using various subset size, gage length and random pattern size. Strain and strain rate distributions and its statistical value are evaluated. As a result, it is found that background noise in strain and strain rate affected by the parameters. Furthermore, these parameters determine the detection limits of strain and strain measurement.