基于迈克耳孙干涉的金属丝杨氏模量测量  

Measuring Young modulus of metal wire based on Michelson interferometer

作　　者：徐勋义 张祖豪[1] 刘子健[1] 常相辉[2] 樊代和[2] 

机构地区：[1]西南交通大学机械工程学院,四川成都611756 [2]西南交通大学物理实验中心,四川成都611756

出　　处：《物理实验》2016年第9期19-22,共4页Physics Experimentation

摘　　要：在拉伸法测量材料的杨氏模量实验中,为了精确地测量被测物体微小伸长量,采用了迈克耳孙干涉法,该方法可将测量精度提高到激光波长的量级.本文详细介绍了该方法的实验原理、实验步骤及实验测量结果.In order to measure accurately the small elongation of metal wire in the experiment of measuring Young modulus with stretch method, the Michelson interferometer was adopted. The measurement accuracy was increased to nanometer level. This paper detailed the experiment principle,procedure and measurement results.

关 键 词：杨氏模量 迈克耳孙干涉 微小伸长量 

分 类 号：O436.1[机械工程—光学工程]