关键词: 炸药, 冲击波感度, 冲击波速度, 冲击波压力

Abstract: Barrier length (or gap thickness) has been used to represent the comparative sequence of shock sensitivity of different explosives. In this work，in order to calculate the shock pressure at the end of a barrier whose thickness represents the sensitivity of a charge， a simple but effective experimental set-up is presented for the measurement of the shock velocity in the barrier. With this measuring s],stem can be obtained fair display of the transmitting wave，with a high responce rate and a large amount of available data points of instantaneous value. In the present method, trails of propagation of shock waves in different barriers are first measured with precision, and the shock velocities are derived from the differentials of the trails. The shock pressure under any specific condition is calculated from the shock velocity with the Hugoniot equation of the material. Shock velocity and pressure attenuation versus distance in some barrier materials such as Ly-12A1,plain carbon steel#45，and plexiglass were obtained and compared with each other.

Key words: explosive, shock sensitivity, shock velocity, shock pressure