Temperature Measurement of Shocked Explosives by Time-Resolved Infrared Radiometry: A New Technique to Measure Shock-Induced Reaction

摘要

Time-resolved two-band infrared radiometry has been used to measure the infrared emission from shocked PBX 9404 and an HMX-based propellant with impedance-matching infrared transmitting overlays. The results allow the estimation of rates of reaction, which agree with computed simulations of the experiments. In PBX 9404, the initial rate of reaction is dependent on input shock amplitude to a high degree, while exhibiting a much weaker dependence of the rate on the pressure build up in the explosive. These results are compared with those for an HMX-based propellant. Time-resolved emission from shocked nitromethane was measured in the same arrangement. Large differences between the two resolved bands in shocked nitromethane are interpreted as partial reaction taking place before detonation. (ERA citation 06:019177)