测量炸药旁侧爆轰波速度的啁啾光纤布拉格光栅传感器技术

邓向阳; 刘寿先; 彭其先; 李泽仁; 陈光华; 蒙建华

doi:10.11883/1001-1455(2015)02-0191-06

测量炸药旁侧爆轰波速度的啁啾光纤布拉格光栅传感器技术

doi: 10.11883/1001-1455(2015)02-0191-06

中国工程物理研究院流体物理研究所，四川绵阳 621999

基金项目: 中国工程物理研究院科学技术发展基金项目(2011B0401008)

详细信息

作者简介:
邓向阳(1975—), 男, 硕士, 副研究员, dxycaep@126.com

中图分类号: O381;O436.1
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- 文章访问数: 3007
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- 被引次数: 0
出版历程
- 收稿日期: 2013-06-28
- 修回日期: 2013-11-19
- 刊出日期: 2015-03-25

Chirped fiber Bragg grating sensor for side detonation velocity measurement of the explosion

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

摘要

摘要: 提出了一种适用于啁啾光纤布拉格光栅CFBG(chirped fiber Bragg grating)传感器测量爆轰波速度的实验公式，该公式考虑了ASE(amplified spontaneous emission)光源的光谱、CFBG的平坦度对测量的影响；研究了CFBG的反射谱线宽与长度的理论关系，并设计了测量CFBG反射谱线宽的实验装置，从而可计算出CFBG长度。搭建了测量CFBG传感器系统常数的实验装置，并利用实验数据拟合了系统常数；用CFBG传感器测量了RDX/TNT(60/40)的旁侧爆轰波速度，与其爆速有3.4%的差异。
- 爆炸力学 /
- 啁啾光纤布拉格光栅传感器 /
- 反射谱 /
- 爆轰波速度 /
- ASE光源
Abstract: An experimental equation of CFBG sensor for detonation velocity measurement which was based on the flatness of ASE light source and CFBG reflection spectrum, was quantitatively established for the first time. The CFBG length could be calculated by the theoretical relation between it and the CFBG reflection spectrum line-width, which was measured experimentally. The constant of the CFBG sensor was fitted by the experimental data. The side detonation-wave velocity of RDX/TNT (60/40) was measured with 3.4% error compared to the publication value.
- mechanics of explosion /
- chirped fiber Bragg grating sensor /
- reflection spectrum /
- detonation velocity /
- ASE light source

HTML全文

图 1 CFBG传感器测量爆轰波速度的结构示意图

Figure 1. Chirped fiber Bragg grating detonation velocity sensor system block diagram

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图 2 CFBG的反射谱线宽测量示意图

Figure 2. Configuration for measuring

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图 3 CFBG的反射谱

Figure 3. Reflection spectrum of CFBG

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图 4 标定CFBG传感器常数的实验布局图

Figure 4. Configuration for calibrating the constants of CFBG sensor

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图 5 归一化信号与CFBG长度的关系

Figure 5. Normalied signals vs CFBG length

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图 6 旁侧爆轰波速度测量的布局示意图

Figure 6. Configuration for measuring side detonation velocity

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图 7 实验信号

Figure 7. Experimental signal

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图 8 位移曲线

Figure 8. Displacement curve

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