摘要
本文描述了聚能金属射流侵彻起爆炸药的试验装置和方法。聚能金属射流是用标准空心装药产生的,空心装药的尺寸为直径40mm,高度66mm,药型罩为紫铜,顶角60°,底直径36mm,壁厚0.75mm,炸药为钝化黑索今,密度1.680±0.005Mg/m^3。炸高为72mm时的最大穿深为150±6mm45~＃钢靶柱。用2MV脉冲闪光X射线摄影仪测量了金属射流穿透不同厚度的钢靶板后的头部运动速度及直径,作出了射流头部速度对钢靶板厚度的标定曲线及拟合曲线公式。炸药对射流侵彻起爆的感度,采用使炸药产生50％概率爆轰的钢靶板厚度(即临界厚度)表示,相对应的临界的流速度可用标定曲线或拟合公式求得。文中给出了TNT.Comp.B及TATB炸药的射流侵彻起爆感度.最后对结果进行了讨论。
This paper describes the test for metal jet to penetrate and initiate the explosive. Metal jet is generated from the standard shaped charge which has 40 mm diameter. 66 mm height and a copper liner of 60° apex angle with 36 mm base diameter. Shaped charge is RDX/WAX, 95/5. density 1. 680±0. 005 Mg/m3. Its maximum penetration is 150±6mm of 45# steel target at a fixed stand-off distance. After penetrating various thickness of steel target the velocity and its diameter of the metal jet are measured by a 2MV flash X-ray system. The curve relationship between the jet velocity and the steel target thickness is calibrated. And its fit formula is obtained. The sensitivity of the explosive to be tested is expressed in terms of the critical thickness of the steel target which gives a 50 per cent probability of detonation of the explosive. The critical velocity and diameter of the metal jet relating to the critical thickness of the steel target can be obtained by means of above mentioned curve or formula. The jet sensitivity of TNT. Comp. B and TATB is presented. Finally the results are discussed.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1990年第4期345-349,共5页
Explosion and Shock Waves
关键词
金属射流
射流起爆
炸药
侵彻
装药
shaped charge, stand off, metal jet. jet initiation, jet velocity.
