| 利用反射式衍射光栅进行瞬态应变测量 |
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| 引用本文： | 徐晓梅,李新良,连大鸿. 利用反射式衍射光栅进行瞬态应变测量[J]. 航空计测技术, 2000, 20(3): 8-11 |
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| 作者姓名： | 徐晓梅 李新良 连大鸿 |
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| 作者单位： | 中国航空长城计量测试技术研究所,北京市1066信箱,100095 |
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| 摘 要： | 介绍了利用反射式衍射光栅进行瞬态应变测量的方法，在一维细长杆中，通过测量杆未端的绝对速度，就可以算出动态应变和应变灵敏度系数K，文章对该方法进行了理论计算和实验结果分析，给出了结论和进一步研究方向。
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| 关 键 词： | 瞬态应变测量 瞬态动应变 反射式衍射光栅 动态应变 灵敏度系数 应变片 |
The Instantaneous Strain Measurement Using Reflecting Diffractive Grating Method |
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| Xu Xiaomei,Li Xinliang,Lian Dahong. The Instantaneous Strain Measurement Using Reflecting Diffractive Grating Method[J]. Aviation Metrology & Measurement Technology, 2000, 20(3): 8-11 |
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| Authors: | Xu Xiaomei Li Xinliang Lian Dahong |
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| Abstract: | A method of using the reflecting diffractive grating to measure the instantaneous strain is described in this paper.Using one dimension bar which is thin and long,named Hopkinson bar,the strain value and the sensitivity coefficient K of the strain have been got after measuring the absolute velocity of the end of the bar.The theory calculation and the experimental result are analysed.The conclusion on this method is given and the farther research orientation is pointed out. |
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| Keywords: | Diffractive grating One dimension bar Dynamic strain Sensitivity coefficient |
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