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

HE Bi; JIANG Xiao-hua; LI Ze-ren; PENG Qi-xian; HE Song-wei; LIU Qiao; DENG Xiang-yang; LONG Xin-ping; FENG Chang-gen

doi:10.11883/1001-1455(2005)01-0031-04

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HE Bi, JIANG Xiao-hua, LI Ze-ren, PENG Qi-xian, HE Song-wei, LIU Qiao, DENG Xiang-yang, LONG Xin-ping, FENG Chang-gen. Flyer velocity measurement of a exploding foil initiation system using a double-sensitivity VISAR[J]. Explosion And Shock Waves, 2005, 25(1): 31-34. doi: 10.11883/1001-1455(2005)01-0031-04

Citation:

HE Bi, JIANG Xiao-hua, LI Ze-ren, PENG Qi-xian, HE Song-wei, LIU Qiao, DENG Xiang-yang, LONG Xin-ping, FENG Chang-gen. Flyer velocity measurement of a exploding foil initiation system using a double-sensitivity VISAR[J]. Explosion And Shock Waves, 2005, 25(1): 31-34. doi: 10.11883/1001-1455(2005)01-0031-04

Citation:

HE Bi, JIANG Xiao-hua, LI Ze-ren, PENG Qi-xian, HE Song-wei, LIU Qiao, DENG Xiang-yang, LONG Xin-ping, FENG Chang-gen. Flyer velocity measurement of a exploding foil initiation system using a double-sensitivity VISAR[J]. Explosion And Shock Waves, 2005, 25(1): 31-34. doi: 10.11883/1001-1455(2005)01-0031-04

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

doi: 10.11883/1001-1455(2005)01-0031-04

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

Publish Date: 2005-01-25

Abstract

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