methods of detonation Flashcards
direct vs indirect stimuli
direct = electrical, mechanical, detonation and deflagration
indirect = magnetism, acoustic, radar
percussion
a direct explosion of a low explosive propellant eg cartridge case
causes localised heating upon decreased volume
problem if detonation is non uniform
electrical
e- current heats filament as it passes => low power
often the start of an explosive train
indirect electrical
‘slapper’ detonator => current vaporises plate –> propels into explosive material = controlled
blasting caps
small explosive device used to detonate an more powerful one
explosive train
starts with the primary detonator and propagates the charge to the main propellant
can then be set of indirectly