engleski

Experimental determination of detonation velocity

For the experimental determination of detonation parameters (such as detonation velocity, detonation pressure, detonation products mass velocity, detonation temperature, etc.) of an explosive, various dynamic methods, based on different physical principles, are applied. Consequently, various experimental methods, as well as testing apparatuses and procedures, are in use. At the same time, due to unusual (extreme) values of detonation parameters (detonation velocity reaches 10 mm/ms, detonation pressure goes as far as 400 kbar, detonation temperature ranges from 2000 to 5000 K, duration time of the chemical reactions in the reaction zone is in a microsecond region, and the width of the chemical reaction zone ranges from tenths of a micrometer to several millimetres), it is very difficult to achieve an entirely reliable experimental determination of some detonation parameters Detonation velocity is one of the most important parameters of an explosive, which can be nowadays measured very accurately. Its measurement is based on the application of some detonation wave properties and different ultrafast signal recording techniques. This paper summarises research work done in this field.

velocity of detonation; explosives; testing; shock wave; camera; probes

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