研究目的

To determine the effect of the thickness of the aluminium and molybdenum films that absorb laser pulses on the ignition delay of organic explosives (PETN, RDX, HMX, TATB) in a three-layer system: glass–metal–EM.

研究成果

A numerical simulation of ignition of PETN, RDX, HMX, and TATB by aluminum and molybdenum films, heated by a nanosecond laser pulse in a three-layer system: glass–metal–EM, was presented. The largest critical thicknesses of Al and Mo films, at which EM ignition is still possible, were determined. It was established that the greater the thickness of the metal film and the thermal stability of EM, the more heat reserve in the film is needed for ignition of EM. The ignition delay time of EM increases in the sequence of PETN, RDX, HMX, and TATB.

研究不足

The study focuses on numerical simulation and does not include experimental validation. The external heat sink was neglected, and burnup was not taken into account due to the high thermal effect and short thermal initiation pulse.