一种新的全场应变光学测量方法

A New Optical Method for Whole Field Strain Measurement

采用光栅衍射、光学全息、显微图像分析等技术，本文提出了一种用于固体表面应变直接测量的新的光学方法，并把这一方法应用于铝合金试件的单轴拉伸试验。实验结果表明：该方法的应变测量灵敏度为８×１０－５。

A new whole field optical technique is developed to study surface deformation of solids.This method combines optical diffraction,optical holography and image microexamination as well.It is applied to an experiment of uniaxial tension.The experimental results show that the strain measuring sensibility of the method is 8×10 -5 .