动态电子散斑干涉法研究  

A STUDY OF DYNAMIC ESPI

作　　者：张东升[1] 李鸿琦[1] 佟景伟[1] 徐广辉[1] 

机构地区：[1]国防科技大学,天津大学

出　　处：《固体力学学报》1996年第3期251-256,共6页Chinese Journal of Solid Mechanics

摘　　要：使用瞬态图象采集技术，将模型受撞击前、后的电子散斑图象直接记录与存储在图象采集卡的帧存体中．从而实现了动态数字散斑干涉．测得了半无限平面模型的面内位移场．实验值与动有限元计算结果很好的吻合．By means of instantaneous image capturing technique, the dynamic electronic speckle image of model before and after impact can be recorded and stored in frame grabber directly.Thus, the dynamic digital speckle pattern interferometry (ESPI) is achieved and the in-plane displacement of semi-infinite plate model under impact loading is obtained. The results of dynamic finite element method show a good agreement with those of experiments.

关 键 词：图象采集技术 动态 散斑干涉 面内位移 

分 类 号：O348.12[理学—固体力学]