A Comparative Experimental Study On The Impact Initiation Reaction Law Of TATB-based Insensitive Explosives

The main research contents of this paper are as follows:The aluminum-based combined electromagnetic particle velocity meter is used to test the impact initiation process of the explosive.The aluminum-based combined electromagnetic particle velocity meter used in the experiment is consisted of three shock wave tracers and eight particle velocity meters.The magnetic field strength of the experimental magnetic field is 0.14T,composed of two permanent magnets,and the center area of the uniform magnetic field is about 900 mm.Under the conditions of 1000g,1100g,1150g,1200g four different gunpowder charges,four sets of impact initiation experiments are performed on TATB-1 and TATB-2 respectively.Under different initial incident impact pressure conditions,the impact surface velocity of the TATB-1 and TATB-2 explosive samples and the post-wave velocity of the shock wave at different depths inside the sample were obtained,and the particle velocity-time wave profile was obtained.By analyzing the waveforms measured by the shock wave tracker,the detonation distance and the detonation time of the two explosives under different impact pressure conditions are determined.The results show that the TATB-2 explosive has better impact initiation performance when the same gunpowder is loaded.The impact initiation characteristics of TATB-3 explosives are studied.The impact initiation characteristics of the insensitive high-energy explosive TATB-3 are studied by combined electromagnetic particle velocity meter technology.A total of 6 different gunpowder charges(500g,600g,700g,800g)experiments are made.The experimental results obtain the instantaneous jump velocity of the particles at different depths of electromagnetic particles at different depths during the impact initiation of TATB-3 explosives;combined with the rain-gong curve of unreacted explosives,the shock wave pressure of the particle take-off point was obtained;The waveform measured by the shock wave tracker obtains the impact of the TATB-3 explosive under different pressures to the detonation distance,and fits the Pop relationship curve reflecting the impact initiation performance of the TATB-3 explosive.