用光纤传感器测量金属丝的杨氏模量  

Measuring Young modulus of wire with optical fiber sensor

作　　者：叶天明[1] 周颖东[1] 潘宁[1] 张志华[1] 方恺[1] 赫丽[1] 杜艾[1] 王晓栋[1] 

机构地区：[1]同济大学物理科学与工程学院,上海200092

出　　处：《物理实验》2015年第12期36-38,42,共4页Physics Experimentation

基　　金：同济大学教学改革研究与建设项目;同济大学精品实验项目

摘　　要：对测量金属丝的杨氏模量实验进行改进,采用光纤传感器来代替光杠杆,通过测量发射-接收探头与平面镜之间的距离测量已知加载情况下金属丝的微小伸长,从而得到金属丝的杨氏模量.The traditional experiment device to measure Young modulus of wire was improved by replacing the optical lever with an optical fiber sensor.By measuring the distance between the light emitter-receiver and the mirror,the slight elongation of the wire under a known loading could be obtained and then the Young Modulus of the wire could be calculated.

关 键 词：光纤传感器 杨氏模量 光杠杆 

分 类 号：O436.1[机械工程—光学工程] O313.3[理学—光学]