VISAR测量电爆炸箔驱动飞片速度的实验研究

Experimental Studies on Velocity Measurement of Mylar Flyer Driven by Exploding Metal Foils with VISAR

为改进冲击片雷管的优化设计,用激光速度干涉仪(VISAR)测量了电爆炸箔起爆器驱动Mylar飞片的速度。介绍了VISAR的工作原理、测量Mylar飞片速度的实验装置及测量方法,得到了不同充电电压和桥箔尺寸条件下Mylar飞片的速度历史,讨论了放电回路参数、电磁干扰、冲击发光、反射率等对测速的影响,估算了Mylar飞片在加速过程中的形变对测速精度的影响。解决了影响VISAR测速的一些技术困难,获得了关键测试技术,成功地用VISAR测量Mylar飞片的速度。

In order to improve the design of exploding foil initiation systems, the velocity of Mylar flyer driven by the exploding foil was measured by VISAR. The principle of VISAR and the experimental setup and the measuring method of determining the velocity of Mylar flyer were introduced. The velocity history of Mylar flyer was given at different charging voltages and various exploding bridge sizes. The discharge circuit parameter, electromagnetic interference, emitting light from shock and reflectivity affecting velocity measurement were discussed. The velocity measurement precision influenced by the deformation of Mylar flyer was estimated. Some problems that affect velocity measurement were solved and some important techniques for velocity measurement of Mylar flyer were obtained. Velocity measurement of Mylar flyer by VISAR was successfully obtained.