光杠杆测量杨氏模量的研究

Study for measuring Young's modulus with optical lever

传统光杠杆杨氏模量测量仪光路调节复杂,改进后利用激光替代望远镜,获得测量标尺上的读数,读数更加便捷.同时,根据螺旋测微仪可以求得放大倍数,从而确定出金属丝微小伸长量.相对于杨氏模量传统测量方法来说,本方法不仅调节方便,而且直观性强、准确度高.

The traditional optical level of Young＇s modulus measuring instrument path light adjustment is very complex,but can be improved by laser replace the telescope and obtain a measurement on the gauge more convenient. At the same time,according to the spiral micrometer,we can word out it＇s magnification times,thus confirming the metal ware＇s small elongation. Comparing with the traditional measuring method of young＇s modulus,this method is not only convenient adjustment,but also intuitive and high accuracy.