基于闪光X射线照相技术的液体爆炸抛撒研究

Investigation on Liquid Explosion Dispersal Based on Flash X-ray Radiography Technique

闪光X射线照相技术相比于可见光高速摄影,具有曝光时间短、穿透能力强和能透视拍摄物体内部信息等优点。本文应用闪光X射线照相技术,对液体爆炸抛撒早期过程壳体材料变形破碎情况、液体受冲击压缩的状态等进行研究,获得了可见光高速摄影等其他测试方法不能得到的实验现象,结果表明:爆炸后液体介质存在密度不均匀区域,爆炸产物气体在不同介质中膨胀规律不同,以及冲击波通过不同介质作用于壳体时,壳体膨胀破碎机制不同。

Comparing with visible light high-speed photography, flash X-ray radiography technique has many advantages, such as extremely short exposure time, strong penetrability and the ability to perspectively capture internal information of object. Applying flash X-ray radiography technique, the shell material deformation and crushing characteristics on the early stage of liquid explosion dispersal and the shock compression state of liquid were studied. Above phenomena can not be experimentally studied before by using traditional visible light high-speed photography or other experimental methods. Results show that after explosion, there is uneven density area in liquid medium and different expansion of explosion products in different medium; there is also different expansion and crushing mechanism of shell, when shock wave penetrates different media to act on the shell.