Velocity measurement of the small size flyer of an exploding foil initiator

WANG Gui-ji; DENG Xiang-yang; TAN Fu-li; LIU Jun; ZHANG Ning; GU Yan; PENG Qi-xian; WU Gang; HAN Mei

doi:10.11883/1001-1455(2008)01-0028-05

Volume 28 Issue 1

Sep. 2014

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Article Navigation > Explosion And Shock Waves > 2008 > 28(1): 28-31

WANG Gui-ji, DENG Xiang-yang, TAN Fu-li, LIU Jun, ZHANG Ning, GU Yan, PENG Qi-xian, WU Gang, HAN Mei. Velocity measurement of the small size flyer of an exploding foil initiator[J]. Explosion And Shock Waves, 2008, 28(1): 28-31. doi: 10.11883/1001-1455(2008)01-0028-05

Citation:

WANG Gui-ji, DENG Xiang-yang, TAN Fu-li, LIU Jun, ZHANG Ning, GU Yan, PENG Qi-xian, WU Gang, HAN Mei. Velocity measurement of the small size flyer of an exploding foil initiator[J]. Explosion And Shock Waves, 2008, 28(1): 28-31. doi: 10.11883/1001-1455(2008)01-0028-05

Citation:

WANG Gui-ji, DENG Xiang-yang, TAN Fu-li, LIU Jun, ZHANG Ning, GU Yan, PENG Qi-xian, WU Gang, HAN Mei. Velocity measurement of the small size flyer of an exploding foil initiator[J]. Explosion And Shock Waves, 2008, 28(1): 28-31. doi: 10.11883/1001-1455(2008)01-0028-05

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Velocity measurement of the small size flyer of an exploding foil initiator

doi: 10.11883/1001-1455(2008)01-0028-05

1.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China;
2.
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

Publish Date: 2008-01-25

Abstract

Abstract

An exploding foil initiator was designed. The question of the velocity measurement of small-size flyer was effectively solved by adopting the measures as follows: (1) accurately control the orientation of bridge foil, flyer and barrel; (2) put a thin aluminum film on the surface of the flyer and the mass of the aluminum film can be neglected compared with that of the flyer; (3) reasonably choose the work distance of the VISAR probe and the fringe constants related with the time delay of interference cavity; (4) shield measuring system and use the optical filter. The velocity measurement results of the flyers with two different sizes of 0.7 mm0.025mm and 0.5 mm0.025 mm were given. Compared with the results by Weingart R C, the obtained results after taking the measures above are with good signal-to-noise ratios, and can reflect the physical essence of exploding foil initiator driving flyer.
- mechanics of explosion,
- velocity measurement,
- VISAR,
- small size flyer,
- exploding foil initiator

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