平底雷管轴向起爆能力的研究

AN INVESTIGATION ON THE AXIAL INITIATING ABILITY OF PLAIN BOTTOM DETONATORS

The axial initiating ability of a detonator is one of the important parameters among its properties. The present paper studies the axial initiating ability of plain bottom detonators by deducing the shock wave velocity and the fragment velocity both theoretically and experimentally. It is found that the initiating ability of plain bottom detonators, within a certain distance, is the result of actions of the two main factors, namely the shock wave and fragments. Since the velocity of the shock wave decays with time and the velocity of the fragments at first accelerates in an undulating manner and then decays, the plain bottom detonator has its minimum output somewhere not too distant from the bottom of the detonator and a maximum output at some farther distance. The techniques for theoretical calculation and experimental measurements are presented and the results discussed.