FAE爆炸场超压与威力的实验研究

利用现场测试系统动态灵敏度标定技术,分别等精度测试了FAE和TNT爆炸场峰值超压。在此基础上获得了各自的爆炸波峰值超压随传播距离的拟合曲线和TNT当量比。结果表明:FAE爆炸场超压分布规律与TNT有显著区别,前者属于大体积云雾爆炸,爆炸场可划分为云雾爆轰区、云雾边缘区和冲击波作用区;在云雾爆轰区,超压平均值在2.6MPa左右,在小于2/3云雾半径的范围内比同质量的TNT低,在大于2/3的云雾半径范围则显著大于TNT;在冲击波作用区,环氧丙烷燃料的FAE爆炸超压约是TNT爆炸效果的5倍,超压均呈衰减趋势,但FAE衰减比TNT缓慢许多。

Experimental research on the overpressure and power in the FAE blast field

The dynamic sensitivity calibration technique of a worksite measurement system has been employed to measure the peak overpressure of the FAE and TNT blast field with equiprecision measurement. Using the technique, the peak overpressure vs scaled distance fitting curves of blast wave and TNT equivalent have been obtained. The results show that the overpressure distribution of FAE differs greatly from that of TNT . The former belongs to volumetric explosion and can be divided into three zones: cloud zone, boundary zone and shock wave zone. In the cloud zone, the average overpressure is 2.6 MPa or so, which is lower than that created by the same mass of TNT within 2/3 of cloud radius, but much higher out of 2/3 of cloud radius. In the shock wave zone, the explosion power of PO reaches about 5 times of TNT's. Although both overpressures inclined to decay, overpressure from FAE decayed more slowly than that from TNT.