Paper describes the use of flash X-ray radiography to study the determination of the sensitivity of explosive fillings to the high velocity jets from shaped charge devices. The test consists of firing the jet from a standard shaped charge at a fixed stand off distance at the explosive sample covered by a variable thickness steel barrier. The sensitivity of the explosive is expressed as the thickness steel barrier. The sensitivity of the explosive is expressed as the thickness of the steel barrier with produces a 50% probability of detonation. The method of calibrating the test that the measured critical steel barrier thickness can be expressed as the critical jet velocity for the detonation/failure threshold of the explosive is described.
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