【摘要】 用普通云纹法研究微小弹性变形时,存在着灵敏度较低的问题.本方利用塔宝效应,产生一个不同栅线距的栅.与原栅形成初始云纹,来增加云纹条纹的密度,从而提高了测量精确度.更多还原

【Abstract】 When small elastic deformation is studied by general moire＇method, one of the shortcomings is its lower senesitivity. In this paper, the Talbot is used to get a different pitch grating and to produced fictitions strain. The high density moire＇fringes are obtained, therefore,the precision of measurement is improved appreciably by this method.更多还原