Shock compression response of an insensitive high explosive single crystal: 1,1-diamino-2,2-dinitroethene (FOX-7)

Winey, J. M.; Toyoda, Y.; Gupta, Y. M.

doi:10.1063/1.5140194

Title: Shock compression response of an insensitive high explosive single crystal: 1,1-diamino-2,2-dinitroethene (FOX-7)

Journal Article · Fri Apr 17 00:00:00 EDT 2020 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.5140194· OSTI ID:1632353

^[1]; Toyoda, Y. ^[1];

^[2]

Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics
Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics and Dept. of Physics

Insensitive high explosives (IHEs) – that do not compromise performance – are of immense interest as a safer alternative to conventional high explosives, such as pentaerythritol tetranitrate (PETN) and cyclotrimethylenetrinitramine (RDX). Despite the strong interest in using IHEs, shock compression experiments on IHE single crystals have not been reported. To address this need, plate impact experiments were conducted to measure wave profiles in 1,1-diamino-2,2-dinitroethene (FOX-7) single crystals – a representative IHE crystal – shocked to 21 GPa longitudinal stress. Particle velocity histories, measured using laser interferometry, show a clear two-wave structure (elastic-inelastic response) at modest stresses (<3.8 GPa). Wave profiles at higher stresses show a single (overdriven) wave. Measured shock velocities and wave profiles provide accurate Hugoniot data to 21 GPa. The measured wave profiles to 21 GPa show no sign of energy release due to chemical decomposition and constitute the first demonstration of an IHE single crystal insensitivity under plane shock compression. Numerical simulations using a phenomenological material model developed for FOX-7 showed good agreement with the measured wave profiles. The experimental results and continuum simulations presented here constitute a significant first step in gaining insight into the shock compression response of IHE single crystals.

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Research Organization:: Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP); US Department of the Navy, Office of Naval Research (ONR)

Grant/Contract Number:: NA0002007; N00014-16-1-2088

OSTI ID:: 1632353

Journal Information:: Journal of Applied Physics, Vol. 127, Issue 15; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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References (25)

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