| 用光学干涉法测量材料的高温线膨胀系数 |
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| 引用本文： | 缪卓君,王新生,徐美华.用光学干涉法测量材料的高温线膨胀系数[J].大学物理,2011(10):57-59. |
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| 作者姓名： | 缪卓君 王新生 徐美华 |
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| 作者单位： | 东南大学土木工程学院;南京工业大学理学院; |
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| 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.
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| 关 键 词： | 线膨胀系数 干涉仪 测量 |
Measuring the thermal expansion coefficient by light interferometry |
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| MIAO Zhuo-jun,WANG Xin-sheng,XU Mei-hua.Measuring the thermal expansion coefficient by light interferometry[J].College Physics,2011(10):57-59. |
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| Authors: | MIAO Zhuo-jun WANG Xin-sheng XU Mei-hua |
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| Institution: | MIAO Zhuo-jun1,WANG Xin-sheng2,XU Mei-hua2(1.School of Civil Engineering,Southeast University,Nanjing,Jiangsu 211189,China,2.College of Sciences,Nanjing University of Technology,Jiangsu 210009,China) |
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| 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. |
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| Keywords: | thermal expansion coefficient interferometer measurement |
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