大学物理 ›› 2011, Vol. 30 ›› Issue (10): 57-57.

• 著者文摘 • 上一篇    下一篇

用光学干涉法测量材料的高温线膨胀系数

缪卓君[1] 王新生[2] 徐美华[2]   

  1. [1]东南大学土木工程学院,江苏南京211189 [2]南京工业大学理学院,江苏南京210009
  • 出版日期:2011-10-25 发布日期:2011-10-20

Measuring the thermal expansion coefficient by light interferometry

  • Online:2011-10-25 Published:2011-10-20

摘要: 采用石英传递杆将高温区材料的线膨胀量传递到室温区,并利用标准件进行标定的方法消除由传递带来的附加线膨胀量的影响,利用迈克耳孙干涉仪测量微小位移的原理,测量材料的线膨胀系数;测量相对误差仅为1.0%,而且测量过程非常直观简单.

关键词: 线膨胀系数, 干涉仪, 测量

Abstract: Expansion quantity at high temperature is transferred to room temperature by quartz staff,and additive effect deriving from transformation is eliminated by confirming standard.A self-restraint apparatus is made to measure the thermal expansion coefficient,and measuring principle is based on the measuring the micro-displacement by Michelson interferometer;the relative error only is 1.0%,moreover,the measuring process is simple.

Key words: thermal expansion coefficient, interferometer, measurement

中图分类号: 

  • O436.1