基于连续压导探针的炸药爆速和临界直径测试方法?

临界直径是确定炸药合理装药直径、预防炸药拒爆和不完全爆轰的重要指标,对炸药性能提高和高效利用有着十分重要的意义。设计了一种连续压导探针和楔形装药装置,在对炸药爆速进行测试的同时,利用炸药在临界直径不完全爆轰的特征,通过寻找爆轰波传播的拐点确定炸药临界直径。试验结果表明:装药密度为0.9g/cm3的铵油炸药爆速为3 261 m/s,临界直径为12.5 mm。提供了一种可同时测得炸药爆速和临界直径的方法,该方法简单,试验费用低,对炸药参数测试具有一定的指导意义。

Detonation Velocity and Critical Diameter Testing Method for Explosive Based on Pressure-conduct Probe Design

ABSTRACT] As an important parameter to determine the reasonable charge diameter and avoid misfire and incomplete detonation, the critical diameter of explosive has a vital signification on performance improvement and utilization efficiency. In this paper, a continuous pressure-conduct probe and wedge charge device was designed to measure the detonation veloci-ty of the explosive and its critical diameter was determined using the incomplete detonation characteristics and locating the detonation inflection point. The experimental results on the ANFO having a charge density of 0. 9 g/cm3 show a detonation velocity of 3 261 m/s and a critical diameter of 12. 5 mm. It provides a simple and low cost method for testing detonation velocity and critical diameter of explosives at one time, which can be taken as a guideline for the determination of explosive parameters.