Experimental Research on the Air Explosion Shock Wave Parameters of TNT,PBX and Hexel

The air explosion parameters of TNT,PBX and Hexel with equal quality,different density and different charge types were tested by an air explosion test system.The shock wave overpressure and impulse at the same testing point of three explosives were compared.The relationships between shock wave overpressure and impulse with proportional distance were studied.The results show that the shock wave overpressure and impulse of TNT explosive is lower than those of PBX and Hexel.In the range of 1.8-4.9m·kg-1/3,the shock wave overpressure and impulse of Hexel explosive is higher than those of PBX.When proportional distance is 6.1mm·kg-1/3,Hexel has the shock wave overpressure and impulse level approaching those of PBX.