Volume 34 Issue 2
Apr 2020
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YANG Shuqi, ZHANG Xu, PENG Wenyang, SHU Junxiang, LIU Shouxian, QIN Shuang, ZHONG Bin. PDV Technology of Shock Initiation Reaction Process of Insensitive Explosive[J]. Chinese Journal of High Pressure Physics, 2020, 34(2): 023402. doi: 10.11858/gywlxb.20190856
Citation: YANG Shuqi, ZHANG Xu, PENG Wenyang, SHU Junxiang, LIU Shouxian, QIN Shuang, ZHONG Bin. PDV Technology of Shock Initiation Reaction Process of Insensitive Explosive[J]. Chinese Journal of High Pressure Physics, 2020, 34(2): 023402. doi: 10.11858/gywlxb.20190856

PDV Technology of Shock Initiation Reaction Process of Insensitive Explosive

doi: 10.11858/gywlxb.20190856
  • Received Date: 11 Nov 2019
  • Rev Recd Date: 30 Nov 2019
  • The shock initiation reaction of A-type insensitive explosive has been investigated by means of the one-dimensional planar impact experiment and photon Doppler velocimetry technique (PDV). In this experiment, a sapphire flyer was launched by the powder gun and then impacted the stepped insensitive explosive A. Meanwhile, the wedge-shaped lithium fluoride (LiF) windows coated with aluminum films were stuck to the different rear interfaces of stepped explosive. Therefore, the particle velocities among these interfaces could be measured. By employing the impedance matching method, the particle velocities in the explosive A were eventually obtained. The experimental results show that the PDV has a higher precision than the multiple electromagnetic particle velocity gauge. The effects of the speed probe’s angle, the probe’s aperture, and the refractive index of the window are briefly analyzed. The relative uncertainty of the measured speed is within 1%.

     

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