Computed and Experimental Hugoniots for Unreacted Porous High Explosives

Erkman, John O.; Edwards, D.J.

doi:10.21236/ada013642

Cited by 4 publications

(2 citation statements)

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“…3 with respective Rankine-Hugoniot analyses. 4,[14][15][16][17][18][19][20][21] Most materials display linear shock velocityparticle velocity ͑U s -u p ͒ behavior in the absence of phase transitions. 22 While this relation is strictly empirical, it is consistent with a first-order expansion of the Mie-Grüneisen equation.…”

mentioning

confidence: 99%

The high-pressure phase behavior and compressibility of 2,4,6-trinitrotoluene

Stevens

Velisavljevic

Hooks

et al. 2008

Applied Physics Letters

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The phase stability and isothermal compression behavior of 2,4,6-trinitrotoluene (TNT) have been established to 26.5 GPa using angle-dispersive x-ray diffraction. P-V isotherms derived from the high-pressure x-ray spectra displayed a slight density hysteresis around 4.0 GPa and a sharp discontinuity at ∼20.0 GPa. The latter transition is ascribed to a monoclinic-to-orthorhombic first-order phase transition in TNT. The conversion of the isothermal P-V data to the shock velocity-particle velocity plane revealed a deviation from linearity at low up, a cusp associated with the phase transition at high up, and general agreement with the wealth of unreacted Hugoniot data on TNT.

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mentioning

confidence: 99%

The high-pressure phase behavior and compressibility of 2,4,6-trinitrotoluene

Stevens

Velisavljevic

Hooks

et al. 2008

Applied Physics Letters

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“…53 Hugoniots for the porous propellants were calculated by the method of Erkman and Edwards. 54 A summary of the pertinent SDT and DDT data is shown in Table 4.…”

Section: Ddt Mechanism(s) In Porous Propellant Systemsmentioning

confidence: 99%

The deflagration-to-detonation transition process for high-energy propellants - A review

Bernecker

1986

AIAA Journal

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Observations of shock-induced chemistry with subnanosecond resolution

Olles

Wixom

Knepper

et al. 2019

Applied Physics Letters

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We report observations of the effects of shock-induced chemical reactions that build to a steady detonation in an energetic material. The chemical reactions in certain materials initiate and build quickly, such that traditional characterization techniques for energetics cannot provide the spatial fidelity necessary to resolve the onset and build-up of reactions. In this work, physical vapor deposition was used to create films of an energetic material with precisely controlled thicknesses to investigate the growth to detonation resulting from shock-induced chemical reactions with microscale spatial resolution. Finite duration shocks were supplied from a well-defined electrically-driven flyer. The velocity of the transmitted shock was measured by photonic Doppler velocimetry with subnanosecond resolution. Initiation experiments were performed on deposited hexanitrostilbene samples ranging from 30 to 150 μm thickness to observe the emergent effects of chemical energy release. The resulting output interface velocity was observed to increase from that predicted for an unreacted shock to that of a chemically supported detonation within 100 μm. A build-up to detonation has not previously been quantified in such a short distance.

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Computed and Experimental Hugoniots for Unreacted Porous High Explosives

Cited by 4 publications

References 5 publications

The high-pressure phase behavior and compressibility of 2,4,6-trinitrotoluene

The high-pressure phase behavior and compressibility of 2,4,6-trinitrotoluene

The deflagration-to-detonation transition process for high-energy propellants - A review

Observations of shock-induced chemistry with subnanosecond resolution

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