ABSTRACT
Detonation of aluminized explosives is a complicated process, because it is not an ideal detonation. The explosive performance is determined by many factors, such as component, size and shape, and constraint conditions. J.M. Philip (1996) separated the detonation reaction of Al explosives into two steps: the first takes place in the wavefront, where the explosive components are reacting, detonation products are produced, and a small amount of Al reacts. In second phase, the Al component reacts rapidly and produces a great quantity of heat. Total energy output is described as:
Ee = WCH ECH + WA1λA1QA1 (1)
where Ee is the whole energy output of the explosive released, ECH is the energy output of the explosive component, WCH is the mass fraction of the explosive component, WAl is the mass fraction of the Al component, λA1 is the reaction degree, and QAl is the heat produced by the Al reaction. The output energy can be changed by changing each factor in the equation above, t. The reaction rate of Al is described as:
m S N H(T TA1 A1 P P G *ρ α. − ) (2)
where ρA1 is the density of Al, SP is the specific surface area, NP is the volume number of particles, α and H(TG − T*) are constants.
