伸长法测量金属杨氏模量实验的改进

An Improvement on the Measuring Yount's Modulus of Metal by Means of Stretch

本文对传统的杨氏模量的测量方法作了改进:用电阻丝替代原来用的钢丝,用电桥替代光杠杆测量金属丝的微小伸长△l,结果使该实验操作简单,仪器调试容易,测量结果精度提高。

In this paper, An improvement of the measuring method of Young’s modulus: A higher resistivity metal wire is used instead of an original metal wire, and a electrical bridge is used insted of the light lever to measure Δ1. By this method, Experimental operations are made simple and instrument adjust ment easier, and result of the measuring is accurater.