【摘要】 将一激光器的工作频率锁定在Fabry-Perot标准具(简称F-P)的共振峰上,利用F-P标准具光学共振频率随腔长的灵敏响应特性,用光学拍频方法测得F一P腔体材料在微小应力作用下的应变值,就可得到材料的弹性模量.本文就此提出了测量材料拉、压弹性模量相对误差的一种方法,并且实测了石英材料拉、压弹性模量的相对误差更多还原

【Abstract】 A method for measuring the moduli of elasticity of material is presented in this paper. Laser frequency is locked-in the passage peak of Fabry-Perot etalon. Using the optical resonat characteristic of Fabry-Perot etalon with the optical beat frequency method, we can get the moduli of elasticity by measuring the strain under very small stress action. The relative errors of stress and stretch elastic moduli of quartz are given.更多还原