面内和离面位移场的电子散斑检测技术改进

IMPROVEMENT IN MEASUREMENT OF IN-PLANE AND OUT-PLANE DISPLACEMENT FIELDS BASED ON ESPI

提出并验证了一种新的测量物体面内和离面位移场的电子散斑检测技术.和传统的采用渥拉斯顿（Wollaston）棱镜的散斑检测技术相比,该技术的改进不仅仅从产生机制上增加了干涉光束的光强度及干涉条纹的清晰度,更从根本上解决了传统实验成本的增加.另外,本文不仅从理论上剖析了该技术的原理以及实现过程,更进行了典型实验,从而验证了所提出方法的有效性.

A new technique is proposed and verified to measure inplane and out -plane displacements by ESPI. Comparing with the traditional ways using the Wollaston prism, not only does it enhance the intensity of interfering beam and the definition of interference overcome the increase in experimental costs, In analyzed in theory in this paper, and a typical nique proposed. fringes from the mechanism of production, but also it fundamentally addition, the principle and the implementation of the technique are experiment is carried out in order to verify the validity of the technique proposed.