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- Title
Applicability limits of the DAX test in plastic bonded explosives.
- Authors
Künz, Martin; Kucera, Jindrich; Pachman, Jiri
- 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 0.01e0.08. The repeatability of the Semtex 1 A detonation pressure results is about four times lower compared to the pressed and liquid explosives.
- Subjects
DOPPLER velocimetry; NITROMETHANE; EXPLOSIVES; VELOCITY measurements; DATA analysis
- Publication
Defence Technology, 2024, Vol 36, p64
- ISSN
2096-3459
- Publication type
Article
- DOI
10.1016/j.dt.2023.09.009