用迈克耳孙干涉法测量固体线膨胀系数  

Measurement of coefficient of linear expansion of solid by using michelson interference

作　　者：程文德[1] 杨文艳[1] 孙宝光[1] 张启义[1] 

机构地区：[1]重庆科技学院数理学院,重庆401331

出　　处：《实验技术与管理》2016年第5期32-33,36,共3页Experimental Technology and Management

基　　金：国家自然科学基金项目(20804060)资助

摘　　要：把迈克耳孙干涉仪与用千分表测量固体线膨胀系数的恒温炉实验仪结合起来,设计制作出测量固体线膨胀系数的仪器。利用光学干涉法测量了铜棒的线膨胀系数,并与用千分表的测量值进行了比较。结果表明干涉法更准确,更适合较低线膨胀系数的固体材料的精密测量。This paper introduces a way combining Michelson interferometer together with constant temperature furnace by using dial indicator for measuring the coefficient of linear expansion.The coefficient of linear expansion of copper is measured by optical interferometry and compared with the values measured by dial indicator.The results show that the measurement of interference method is more accurate and more suitable for the precision measurement of lower coefficient of linear expansion of solid materials.

关 键 词：线膨胀系数 迈克耳孙干涉 千分表 

分 类 号：Q434[生物学—生理学]