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  

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

作　　者：邓向阳[1] 刘寿先[1] 彭其先[1] 李泽仁[1] 陈光华[1] 蒙建华[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621999

出　　处：《爆炸与冲击》2015年第2期191-196,共6页Explosion and Shock Waves

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

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。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 estab- lished 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.

关 键 词：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 

分 类 号：O381[理学—流体力学] O436.1[理学—力学]