GRIN介质用于面内位移的测量  

Application of GRIN Media in Measuring In plane Displacement

作　　者：何小元[1] 於文雪[1] 张抱和[1] 

机构地区：[1]东南大学

出　　处：《实验力学》1999年第1期14-18,共5页Journal of Experimental Mechanics

基　　金：国家自然科学基金

摘　　要：本文把梯度折射率（ＧＲＬＮ）介质的面内位移与其折射率梯度联系起来，对面内位移导致的折射率变化进行研究，介绍了ＧＲＩＮ介质用于面内位移测量的基本原理。In this paper, the connection between the gradient refractive index of GRIN media and its in plane displacement is established. So, by studying the variation in the refractive index of GRIN media, its in plane displacement which causes this variation can be deduced. An experiment for measuring the deflection of a cantilever beam based on this principle and by using double ray interferance method is reported.

关 键 词：GRIN介质 面内位移 双光束干涉法 位移测量 

分 类 号：TH822.01[机械工程—仪器科学与技术]