动态双光栅测量金属热膨胀系数

摘要

Based on the theory of measuring the tiny amplitude of a vibrating tuning fork ,the thermal expansion coefficient of metals was measured using the longitudinal displacement of static grating .The development of the theory and the experimental results were shown .%　　在双光栅测量音叉微小振幅的理论基础上，利用静光栅纵向位移对金属热膨胀系数进行测量。本文给出了动态双光栅测量金属热膨胀系数的理论拓展与实验结果。