起爆药爆轰场和燃烧场的干涉法显示及其图像处理

本文介绍了利用脉冲YAG激光引爆起爆药产生爆轰流场或燃烧温度场,用时间序列干涉法首次获得了爆轰流场和起始燃烧过程的时间序列干涉图的实验结果.在此基础上,采用条纹曲线检测法和双三次多结点插值样条函数从干涉图上提取爆轰场冲击波的波阵面,并通过序列波阵面配准算法,定量地计算了冲击波的传播速度.同时,还定量计算了燃烧场温度随时间变化的分布.

Interferometric visualization and image processing of explosive flow field and combustion field of initiating agent

In the paper, the experiment results of time-serial interferograms of explosive flow field and initial combustion process are presented which are produced by using pulsed YAG laser to detonate initiating agent and obtained with timeserial interferometry. On this basis, a method of fringes curve detecting and the function of double cubic many-knot interpolating splines are used to extract the wave-front of shock wave. With the algorithm of serial wave-front registering the propagation velocity of shock wave is calculated quantitatively. At the same time, the distribution of temperature with the change of time in the process of initiating agent combustion is calculated quantitatively also.