FSC239Y5 Lecture Notes - Lecture 6: Pipe Bomb, Sample Size Determination, Gunpowder
Document Summary
Sudden release of the large amount of energy. Kind of explosions: atomic explosions, electrical explosion: electric arcing causes great heat leading to rapid expansion of gases and vaporization of solids, chemical explosions: rapid change of phase, in this case from liquid to vapor. Bleve: fire under a propane tank raised the pressure to point of explosions failure: chemical explosion: Extremely rapid chemical reactions that generates a large quantity of gases. Gives of heat but no an explosion because it"s not very hot. Mixture of chemicals that contain a high potential energy. Is capable of undergoing extremely rapid chemical reaction. Most explosives are a combination of one or more fuels with an oxidizer. Or they can be combined in one molecule. The fuel and oxidizer can be an intimate mechanical mixture. Black powder is the classic mechanical mixture explosive. Speed of reaction is slower than the speed of sound. Used to accelerate projectiles, such as bullets, rockets and fireworks.
