基于ICP技术的炸药冲击波压力测定

采用由137型传感器、VXI数据采集和计算机数据处理系统等组成的测定炸药自由场冲击波压力的高速动态测量系统,测得了某传爆药柱在空中爆炸时产生的空气冲击波超压曲线,并通过计算和数据拟合方法,得到了超压曲线、超压随时间变化的关系式以及不同条件下的峰值超压、正压作用时间等参数。实验表明:随着测点爆心距的增大,峰值超压递减,且测点爆心距越大,超压衰减速率越小。当爆心距为0.6m时,超压值为0.1143 MPa,而当距离为1.2 m时,超压值则为0.0323 MPa。

Shock Wave Pressure Measurement of Explosive Based on ICP Technology

This article introduced a high speed dynamic system composed of a type 137 sensors, a VXI data acquisi- tion and a computer data processing, which could be used to measure explosive shock wave in the free field. With calcula- tion and the data fitting method, the super pressure curve, the relationships about overpressure changing with the time, and parameters of the peak overpressure duration and specific impulse in different conditions could be obtained. The experimental results indicate that the peak overpressure is reduced with the increase of distance between measuring point and exploding point, and the further the distance, the less the decay rate of overpressure. The overpressures are 0.1143 and 0. 0323 MPa when the distances are 0.6 and 1.2 m, respectively.