| 炮管瞬态应变测试仪 |
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| 引用本文： | 何勇,李建欣,朱日宏.炮管瞬态应变测试仪[J].东南大学学报(自然科学版),2009(Z2). |
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| 作者姓名： | 何勇 李建欣 朱日宏 |
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| 作者单位： | 南京理工大学电子工程与光电技术学院; |
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| 摘 要： | 为了测量炮管发射过程中各处的瞬态应变,研究了光纤B ragg光栅瞬态应变测试技术,构建了炮管瞬态应变测试系统.系统主要由宽带光源、光纤光栅、非平衡马赫-曾德干涉仪、数据采集与处理等部分组成.分析了光纤B ragg光栅应变信号的干涉解调技术,编写了三步移相解调软件.通过悬臂梁实验对系统进行了标定,得到应变与测量信号之间相位差曲线.在炮管壁安置4个测试点,分别测量出瞬态应变,炮管管壁的应变大小从炮尾到炮口呈逐渐衰减的趋势.分析表明,系统测量精度优于0.7%.该方法的使用对炮管和弹丸诸参数的选择有指导意义.
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| 关 键 词： | 光纤Bragg光栅 瞬态应变 马赫-曾德干涉仪 干涉解调 |
Gun-barrel transient strain measuring device |
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| He Yong Li Jianxin Zhu Rihong.Gun-barrel transient strain measuring device[J].Journal of Southeast University(Natural Science Edition),2009(Z2). |
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| Authors: | He Yong Li Jianxin Zhu Rihong |
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| Institution: | He Yong Li Jianxin Zhu Rihong(School of Electronic Engineering , Optoelectric Technology,Nanjing University of Science , Technology,Nanjing 210094,China) |
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| Abstract: | To measure the gun-barrel transient strain during launch,fiber Bragg grating strain measurement technique is studied and a fiber Bragg grating strain transient test system is constructed.The system mainly consists of wide-band light source,fiber Bragg grating,unbalanced Mach-Zehnder interferometer,and data acquisition and processing components.The interference signal demodulation technique of fiber Bragg grating strain is analyzed and software program based on the three-step phase-shift is developed.Through... |
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| Keywords: | fiber Bragg grating transient strain Mach-Zehnder interferometer interferometric demodulation |
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