摘要
本文应用相位移激光全息干涉法研究板状结构的热应变。选矩形平板作为试件,平板两边缘被约束,另两边缘成自由状态,通过相位移激光全息干涉图来测量热应变,在全息干涉图上将显示出鞍形效应。从测示结果来看,相位移激光全息干涉图得到的热应变与用应变片法测量的结果基本吻合。
In this paper,the thermal deformation of a plate is measured by Phase shifting laser holography interference. The plate is simply supported at two edges,and the other two are free. The anticlastic effect is shown in holographic fringe patterns. The strain obtained from phase shifting laser holographic interference agrees basically with those from the strain gages.
关键词
相位角
激光
全息干涉法
载荷
phase shifting
laser holography interference
load
anticlastic effect
