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Color Imaging of Shock Front Emergence in TNT
Final rept. 10 Jan 2010-6 Mar 2012
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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This report describes the use of high speed color digital optical imaging of light emission at the shockdetonation front to determine the planarity or lack thereof of a detonation wave produced in an explosive sample using a 4-inch diameter plane wave generator lens. A high speed, color digital framing camera Cordin Company Model 570 was used to record images of detonation front emergence from samples of the solid high explosive TNT trinitrotoluene, C7H5N3O6. Frame-by-frame images of the event are deconstructed into red, green, and blue matrices used by the digital camera system to produce color images. CTH-based calculations CTH-based calculations a hydrodynamic computer code developed at Sandia National Laboratories, predicting the spatial profile of the shockdetonation front as it emerges from the solid explosive surface, are compared with bandwidth-specific contour maps made using the color matrices. The correlation between contour maps of light emission at different bandwidths and predicted shockdetonation profiles is discussed.
APPROVED FOR PUBLIC RELEASE