利用箔式应变片测量金属丝杨氏模量
收稿日期: 2020-07-27
修回日期: 2020-10-02
网络出版日期: 2021-05-17
基金资助
2019 年重庆市高等教育教学改革研究项目( 193008) 、2018 年重庆大学教学改革研究立项项目( 2018Y55) 、2019 年重庆大学实验教学改革项目( 2019S08)以及 2020 年重庆大学教学改革研究立项项目( 2020Y50) 资助
Experimental design of measuring Young’s modulus using foil strain gauges
Received date: 2020-07-27
Revised date: 2020-10-02
Online published: 2021-05-17
郑雪丽, 邱 丽, 汪 涛, 沈靖皓, 雷 迪, 李巧梅, 杨骏骏 . 利用箔式应变片测量金属丝杨氏模量[J]. 大学物理, 2021 , 40(5) : 20 . DOI: 10.16854 / j.cnki.1000-0712.200334
experiments required in universities. At present，the method using mirror ruler group to measure
the Young’s modulus was adopted in most colleges and universities. Based on this，it is proposed
to measure Young’s modulus with foil strain gauge in this paper. This method combining
with the electrical and mechanical knowledge so as to enhance students’comprehen- sive experimental
abilities and increase their awareness of innovation. During the measurement，a micrometer
with higher accuracy is used first to calibrate，and then the output voltage value of the
Wheatstone bridge is measured af- ter forcing. From the measured data and data processing
results，the method shows a good stability and high accura- cy，and was suitable for practical
teaching.
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