Study on ultra-high speed photoelectric framing photography of the multi-point initiation of explosive

CHANG Lihua; WEN Weifeng; RAN Maojie; HUANG Wenbin; WANG Xu; HE Hui; GAO Peng

doi:10.11883/bzycj-2021-0201

Volume 42 Issue 4

May 2022

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CHANG Lihua, WEN Weifeng, RAN Maojie, HUANG Wenbin, WANG Xu, HE Hui, GAO Peng. Study on ultra-high speed photoelectric framing photography of the multi-point initiation of explosive[J]. Explosion And Shock Waves, 2022, 42(4): 044101. doi: 10.11883/bzycj-2021-0201

Citation:

CHANG Lihua, WEN Weifeng, RAN Maojie, HUANG Wenbin, WANG Xu, HE Hui, GAO Peng. Study on ultra-high speed photoelectric framing photography of the multi-point initiation of explosive[J]. Explosion And Shock Waves, 2022, 42(4): 044101. doi: 10.11883/bzycj-2021-0201

Citation:

CHANG Lihua, WEN Weifeng, RAN Maojie, HUANG Wenbin, WANG Xu, HE Hui, GAO Peng. Study on ultra-high speed photoelectric framing photography of the multi-point initiation of explosive[J]. Explosion And Shock Waves, 2022, 42(4): 044101. doi: 10.11883/bzycj-2021-0201

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Study on ultra-high speed photoelectric framing photography of the multi-point initiation of explosive

doi: 10.11883/bzycj-2021-0201

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2021-05-20
Rev Recd Date: 2021-09-17

Available Online: 2022-04-02

Publish Date: 2022-05-09

Abstract

Abstract

In order to obtain the propagation process of detonation wave by multi-point initiation of explosive, a suitable ultra-high speed photoelectric framing photography technique was studied. A self-developed ultra-high speed photoelectric framing camera with an exposure time of 5 ns, spatial resolution of 40 lp/mm and photographic frequency of 200 MHz combined with plexiglass optical shutter technology was adopted. We obtained eight high-resolution detonation wave images of plastic bonded explosives based on HMX and TATB under the condition of three-point synchronous initiation. The whole process of the detonation wave propagation and interaction was captured successfully, and the details of the coherent interaction and the Mach Rod were observed. The experimental results show that the ultra-high speed photoelectric framing photography based on the independent exposure mode have the advantages of short exposure time, continuous adjustable image interval and high spatial resolution, and the propagation and interaction of the detonation wave can be observed in great detail. The experimental method and results provide a valuable reference for the study of the interaction and Mach reflection of the detonation waves.
- ultra-high speed photography,
- plastic bonded explosive,
- multi-point initiation,
- detonation wave,
- photoelectric framing camera.

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References(9)

References

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