Simultaneous Initiation of Light-Initiated Explosive Silver Acetylide-Silver Nitrate

doi:10.12382/bgxb.2021.0611

Abstract

Abstract: An experimental simulation technique using light-initiated explosive is considered as a high-fidelity technique to study the structural effect caused by X-ray induced blowoff impulse loading. To realize nearly simultaneous impulse loading with very short duration over large areas of the light-initiated explosive, silver acetylide-silver nitrite(SASN), it is critical to develop a technology to initiate sprayed coatings of light-initiated explosive almost simultaneously. Using coated optical fiber probes, simultaneous initiation of sprayed layers by pulse flash produced by electrical explosion of tungsten wire is characterized and proven to be accurate. The results show that the detonation times of a sprayed-deposited explosive can be obtained precisely by the probes. The higher the illuminance, the better the synchronicity of the initiation and the shorter the delay period of the light initiation. When the number of tungsten wires is increased from one to two, the simultaneity of light initiation is significantly improved that the minimum time gap for ignition between adjacent measured points is reduced from 0.6 μs to 0.1 μs when the delay time is decreased from 33.7~57.7 μs to 13.0~20.4 μs. The conclusion indicates that it is possible to achieve high simultaneity of light initiation over a large coverage of light-sensitive explosive.

Key words: mechanicsofexplosion, light-initiatedexplosive, silveracetylide-silvernitrate, simultaneousinitiation, electricalexplosion, lightinitiation

CLC Number:

O384
O434

XU Haibin, YANG Jun, WU Ke, CHEN Bo, SUI Yaguang, WANG Dengwang. Simultaneous Initiation of Light-Initiated Explosive Silver Acetylide-Silver Nitrate[J]. Acta Armamentarii, 2022, 43(11): 2791-2797.

References

［1］ NEVILL G E J R, HOESE F O. Impulsive loading using sprayed silver acetylide-silver nitrate[J]. Experimental Mechanics， 1965, 5(9): 294-298.
[2］ HOESE F O, LANGNER C G, BAKER W E. Simultaneous initiation over large areas of a spray-deposited explosive[J]. Experimental Mechanics， 1968, 8(9): 392-397.
[3］ BENHAM R A, MATHEWS F H. X-ray simulation with light-initiated explosive[J]. Shock Vib Bull, 1974(45): 87-91.
[4］ BESSEY R L, HOKANSON J C. Simultaneous and runing impulsive loading of cylindrical shells, ADA012268[R]. San Antonio, TX，US: Southwest Research Institute, 1975.
[5］ BENHAM R A, MATHEWS F H, HIGGINS P B. Application of light-initiated explosive for simulating X-ray blowoff impulse effects on a full scale reentry vehicle, SAND76-9019[R]. Albuquerque, NM，US: Sandia National Laboratories, 1976.
[6］ BENHAM R A. Light-initiated explosive for impulse experiments on structural members, SAND75-0516[R]. Albuquerque, NM，US: Sandia National Laboratories, 1976.
[7］ BENHAM R A. A new LIHE test capability for spherical targets, SAND86-2366C[R]. Albuquerque, NM，US: Sandia National Laboratories, 1987.
[8］ RIVERA W G. Light initiated high explosive impulse load calibration, SAND2005-2460C[R]. Albuquerque, NM，US: Sandia National Laboratories, 2005.
[9］ COVERT T. VISAR validation test series at the light initiated high explosive (LIHE) facility, SAND2007-0779[R]. Albuquerque, NM，US: Sandia National Laboratories, 2007.
[10］ COVERT T T. Staubli TX-90XL robot qualification at the light initiated high explosives facility, SAND2010-7222[R]. Albuquerque, NM，US: Sandia National Laboratories, 2010.
[11］ WILLIS M, COVERT T, RADTKE G. LIHE spectral dynamics and jaguar data ccquisition system measurement assurance results 2014, SAND2015-5190[R]. Albuquerque, NM，US: Sandia National Laboratories, 2015.
[12］胡明志. 锥壳承受短脉冲载荷的实验研究[J]. 宇航学报, 1986,7(3): 54-60.
HU M Z. Experimental investigation on conical shells under short impulsive loading[J].Journal of Astronautics, 1986, 7(3): 54-60. （in Chinese）
[13］褚桂敏. 核爆产生的强脉冲和冲击波载荷的模拟[J]. 强度与环境, 1989(5): 46-50.
CHU G M. Simulations of intense impulses and blast loads from nuclear explosion[J].Structure & Environment Engineering,1989(5): 46-50.（in Chinese）
[14］毛勇建，邓宏见，何荣建. 强脉冲软X光喷射冲量的几种模拟加载技术[J]. 强度与环境,2003(2): 55-64.
MAO Y J, DENG H J, HE R J. Several simulation techniques of blow-off impulses by intense pulsed cold X-rays[J].Structure & Environment Engineering,2003(2): 55-64.（in Chinese）
[15］徐海斌，裴明敬，张德志，等. 乙炔银-硝酸银合成工艺优化及其性能测试[J]. 火炸药学报, 2018, 41(6): 573-577.
XU H B，PEI M J，ZHANG D Z，et al. Optimization of synthesis process and property test of silver acetylide-silver nitrate[J]. Chinese Journal of Explosives & Propellants,2018, 41(6): 573-577. （in Chinese）
[16］徐海斌，裴明敬，张德志，等. 酸性乙炔银制备方法及其表征[J]. 火工品, 2019(4): 40-43.
XU H B，PEI M J，ZHANG D Z，et al. Synthesis and characterization of silver acetylide-silver nitrate[J].Initiators & Pyrotechnics,2019(4): 40-43.（in Chinese）
[17］裴明敬，徐海斌，王等旺，等. 酸性乙炔银的光起爆特性[J]. 高压物理学报, 2017, 31(6): 813-819.
PEI M J，XU H B，WANG D W，et al.Detonation characteristics of light-initiated explosive silver acetylide-silver nitrate[J].Chinese Journal of High Pressure Physics,2017, 31(6): 813-819.（in Chinese）
[18］杨军，裴明敬，王等旺，等. 基于光子多普勒测速仪的冲量传感器[J]. 兵工学报, 2017, 38(增刊1): 150-154.
YANG J，PEI M J，WANG D W，et al. Impulse sensor based on photonic doppler velocimetry[J]. Acta Armamentarii,2017, 38(S1): 150-154.（in Chinese）
[19］ KOLESOV V I, KONOVALOV A N, MANAKHOVA E S, et al. Time delay of initiation of some primary explosives and initiating mixtures when exposed to continuous IR laser radiation[J]. Propellants,Explosives,Pyrotechnics,2020,45(11):1745-1754.
[20］ BENHAM R A. An initiation and gas expansion model for the light-initiated explosive silver acetylide-silver nitrate, SAND79-1829[R]. Albuquerque, NM，US: Sandia National Laboratories,1979.
[21］王昭，吴祖堂，温广瑞，等. 一种薄膜式的光纤压力传感技术[J]. 爆炸与冲击, 2019, 39(6): 77-84.
WANG Z，WU Z T，WEN G R，et al. A fiber optic pressure sensing technology based on thin diaphragm structure[J]. Explosion and Shock Waves,2019, 39(6): 77-84.（in Chinese）