| 利用迈克尔逊干涉仪测杨氏弹性模量的方法 |
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| 引用本文： | 闫凯,池红岩,韩仁学.利用迈克尔逊干涉仪测杨氏弹性模量的方法[J].实验科学与技术,2014,12(5):31-32. |
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| 作者姓名： | 闫凯 池红岩 韩仁学 |
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| 作者单位： | 黑龙江科技大学工程训练与基础实验中心,哈尔滨,150022 |
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| 基金项目： | 黑龙江科技大学教研资助项目 |
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| 摘 要： | 提出一种借助于迈克尔逊干涉仪对金属丝杨氏弹性模量高准确度的测量方法。通过计量迈克尔逊干涉仪产生的干涉条纹变化数目,能准确测得金属丝微小长度变化量,进而测得其杨氏弹性模量。相比于传统的光杠杆法测微小位移,仪器结构简单,可操作性强。测得的数据计算结果表明:测量精度高,结果可靠。
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| 关 键 词： | 迈克尔逊干涉仪 杨氏弹性模量 干涉条纹 测量 |
Measurement of Young's Modulus of Elasticity by Michelson Interferometer |
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| YAN Kai,CHI Hongyan,HAN Renxue.Measurement of Young's Modulus of Elasticity by Michelson Interferometer[J].Experiment Science & Technology,2014,12(5):31-32. |
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| Authors: | YAN Kai CHI Hongyan HAN Renxue |
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| Institution: | ( Center for Engineering Training and Basic Experimentation, Heilongjiang University of Science and Technology, Harbin 150022, China) |
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| Abstract: | We put forward a high accuracy of measurement on Young＇s modulus of elasticity of metal wire by Michelson interferometer. By measuring the changes number of the interference fringes produced from Michelson interferometer, we can accurately measure the small length variation of wire, and then the Young＇s modulus of elasticity. Compared with the traditional optical lever measurement on tiny displacement, instrument is simple in structure, strong operability. By calculating the measured data, the results show high precision, high reliable measurement results. |
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| Keywords: | Michelson interferometer Young＇s modulus of elasticity interference fringes measurement |
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