Applicability limits of the DAX test in plastic bonded explosives
Martin Künzel 1Jindrich Kucera 1Jiri Pachman2
作者信息
- 1. OZM Research,Bliznovice 32,Hrochuv Tynec 53862,Czech Republic
- 2. Institute of Energetic Materials,Faculty of Chemical Technology,University of Pardubice,Studentska 95,Pardubice 53210,Czech Republic
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Abstract
The Disc Acceleration eXperiment(DAX)is one of the most recent experimental methods of performance characterization of new energetic materials.A cylindrical explosive charge accelerates a thin metallic disc and its velocity is measured continuously using photonic Doppler velocimetry.The detonation velocity is measured simultaneously.The DAX test can be used to obtain the Chapman-Jouguet(CJ)detonation pressure and to describe detonation products expansion using reduced amount of explosive.A series of DAX tests was performed at various charge diameters and disc thicknesses with Semtex 1 A plastic bonded explosive and sensitized nitromethane.The DAX-like evaluation was also applied to previously measured data of Semtex 1A and A-IX-1 explosives.The optimum disc thickness is determined by the disc to explosive mass ratio of 0.01-0.08.The repeatability of the Semtex 1 A detonation pressure results is about four times lower compared to the pressed and liquid explosives.
Key words
Flyer plate/Detonation pressure/Photonic Doppler velocimetry/Semtex引用本文复制引用
出版年
2024
NETL
NSTL
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