测试爆炸箔起爆器的飞片速度

Flyer velocity measurement of a exploding foil initiation system using a double-sensitivity VISAR

1.
Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China;
2.
School of Mechano-Electronics, Beijing Institute of Technology, Beijing 100081, China;
3.
Institute of Fluid physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China;
4.
China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

摘要: 用双灵敏度VISAR测试爆炸箔起爆器的飞片速度历史。通过对飞片表面镀膜处理，消除了爆炸箔爆炸自发光产生的干扰，增加了飞片的反射率。在爆炸箔宽360 m，厚8.4 m，加速膛直径为1.2 mm，飞片厚0.12 mm，放电回路充电电压为4.5 kV，放电周期为750 ns的条件下，飞片最大速度为4.1 km/s，飞片加速时间约为150 ns，飞片达到最大速度的飞行距离约为0.3 mm。
- 爆炸力学 /
- 测试 /
- 双灵敏度VISAR /
- 飞片速度 /
- 爆炸箔起爆器
Abstract: A double sensitivity VISAR system is used to measure the flyer velocity of electrically exploding foil initiator. The flyer surface is treated by plating a metal film, which eliminates the interference caused by bridge foil exploding, and enhances the reflectivity of the flyer surface. For a EFIs with a 0.36 mm wide and 8.4 m thick bridge foil, and a 1.2 mm diameter and 0.12 mm thickness flyer, under 4.5 kV charge, the peak flyer velocity is 4.1 km/s, the accelerating duration is about 150 ns, and the displacement of the flyer is about 0.3 mm till reaching the peak velocity.
- mechanics of explosion /
- measurement /
- double sensitivity VISAR /
- flyer velocity /
- EFIs