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引言冻结式双向光弹应变计(以下简称应变计)是量测结构物表面点应变的一种量测元件。它基于光测弹性力学的基本原理。利用光学灵敏材料受力后的双折射现象,分析计算被测点的应力或应变。
Introduction Freeze bidirectional photoelastic strain gages (hereinafter referred to as strain gauges) are measuring elements that measure the point strain on the surface of a structure. It is based on the basic principles of photoelasticity mechanics. The birefringence phenomenon of the optically sensitive material is used to analyze and calculate the stress or strain at the measured point.