FNSC2200 Lecture Notes - Lecture 5: Improvised Explosive Device, Blast Wave, Detection Dog
Document Summary
Objectives/ goals: cause, evidence, advice to incident investigators, reconstruct, determine the circumstances (deliberate/ accident/ consequential) Looks for: undetonated explosive residue, exploded residue, remnants of the device. Rapid increase in volume and release of e, characterized by high c and release of gases. Electrical arcs generate sufficient heat to cause an explosion may or may not result in subsequent fire. Common bombs: pipe bombs, vehicle bombs, letter / parcel bombs, suicide bombers. Ambient air pressure spikes then decreases to sub- atmospheric pressure. Blast wave from explosion creates compressed air particles the creates shock front. This creates a vacuum with negative pressure that sucks items back into the center: thermal effects hot fire ball produced, fragmentation projectiles of the bomb upon detonation.
