利用反射式光纤位移传感器测量钢丝的杨氏模量  

The Measurement of the Young’S Modulus of Steel Wire Using Reflective Fiber Optical Displacement Sensor

作　　者：薛思敏[1] 史明哲 XUE Simin;SHI Mingzhe(School of Mathematics and Physics,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学数理学院,甘肃兰州730070

出　　处：《大学物理实验》2020年第2期22-24,共3页Physical Experiment of College

基　　金：甘肃省教育厅高等学校科研项目(2018A-027);兰州交通大学校内课题项目(2019030)。

摘　　要：利用反射式光纤位移传感器在输出电流为20 mA的条件下,选用线性度较好的1.10~1.65 mm位移区曲线为定标曲线,测量钢丝在加载情况下的微小伸长量,计算钢丝的杨氏模量。与光杠杆法相比较,测量误差小,准确度高。Under the condition that the output current of the reflective fiber optical displacement sensor is 20 mA,the region curve of 1.10~1.65 mm with good linearity is selected as the calibration curve to measure the tiny elongation of the steel wire under the loading condition and calculate the young's modulus of the steel wire.Compared with the optical lever method,the measurement error is small and the accuracy is high.

关 键 词：光纤位移传感器 微小位移 杨氏模量 

分 类 号：O4-33[理学—物理]