利用螺旋测微器测量金属丝的杨氏模量

Improvement on the Experiment of Measuring Young' Modulus by pulling and stretching

在传统的光杠杆法测量金属杨氏模量实验原理的基础上,设计了一套利用螺旋测微器测量钢丝的微小伸长量的实验装置.实验结果表明,该装置不仅操作简单,而且减少了被测量量,一定程度上降低了实验误差.

Based on the principle of optical lever method for measuring Young＇s modulus of elasticith on metal,by means of spiral micrometer,a set of experimental apparatus for measuring micro-extension on metal has been designed. The result of the experiment shows that the apparatus is more convenient than by traditional method,and the measures are reduced,the relative error is droped in a certain extent.