Interferometer Studies Of Grain Burning Behavior In HMX Explosive

D. A. Benson; M. R. Baer

doi:10.1117/12.936276

9 January 1984 Interferometer Studies Of Grain Burning Behavior In HMX Explosive

D. A. Benson, M. R. Baer

Proceedings Volume 0427, High Speed Photography, Videography, and Photonics I; (1984) https://doi.org/10.1117/12.936276
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

Abstract

A laser interferometer is used in experiments which probe the thermal initiation and burning of explosives on a microsecond time scale prior to detonation. In this work, small charges of HMX are confined by a piston in a steel chamber bore and thermally initiated with a foil on one surface of the chamber which is suddenly heated by a capacitor discharge. The burn process is observed through the motion of a piston which is driven by the gaseous combustion products. An air-delay leg VISAR velocity interferometer system is used to monitor the piston motion. This velocity data is directly processed to determine the chamber gas pressure as a function of volume during the piston expansion. High-pressure burn rates during deflagration can be deduced from these tests. Parasitic effects in small charge experiments due to thermal conduction from the walls, piston leakage, friction, as well as the interferometer resolution itself are discussed.

Citation Download Citation

D. A. Benson and M. R. Baer "Interferometer Studies Of Grain Burning Behavior In HMX Explosive", Proc. SPIE 0427, High Speed Photography, Videography, and Photonics I, (9 January 1984); https://doi.org/10.1117/12.936276

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