Open AccessSurface temperature measurements of heterogeneous explosives by IR emission
Author(s) -
B. F. Henson,
David J. Funk,
Peter Dickson,
C.S. Fugard,
B. W. Asay
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/650295
Subject(s) - emissivity , explosive material , ignition system , atmospheric temperature range , materials science , combustion , infrared , temperature measurement , thermal , thermal emission , analytical chemistry (journal) , thermodynamics , chemistry , optics , physics , organic chemistry , chromatography
The authors present measurements of the integrated IR emission (1--5 {micro}m) from both the heterogeneous explosive PBX 9501 and pure HMX at calibrated temperatures from 300 C to 2,500 C. The IR power emitted as a function of temperature is that expected of a black body, attenuated by a unique temperature independent constant which the authors report as the thermal emissivity. The authors have utilized this calibration of IR emission in measurements of the surface temperature from PBX 9501 subject to 1 GPa, two dimensional impact, and spontaneous ignition in unconfined cookoff. They demonstrate that the measurement of IR emission in this spectral region provides a temperature probe of sufficient sensitivity to resolve the thermal response from the solid explosive throughout the range of weak mechanical perturbation, prolonged heating to ignition, and combustion