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UXOInfo.com Ordnance Hazards (1113 words) |
 | Detonation (Instantaneous Combustion) Detonation can be defined as most rapid form of combustion and is often times referred to as "instantaneous combustion." However, detonation is not exactly instantaneous there is a short time interval (microseconds) for the combustion action to transfer from one particle of the explosive compound to the next. |
| The velocity of this "instantaneous combustion" has been measured for most explosives and is referred to as the detonation velocity of the explosive. |
| When an encased explosive such as a bomb detonates, the rapidly expanding gases produced by the explosion cause the casing to enlarge to about one and one-half times its original diameter before it ruptures and breaks into fragments that are propelled away from the center of detonation at velocities of approximately 2,500 feet per second. |
| Explosives - Search View - MSN Encarta (1325 words) |
| Some of the newer high explosives with a detonation rate of 9140 m per sec are extremely effective for military demolition and certain types of blasting. |
| For detonating charges of comparatively insensitive high explosives, compounds are used that will themselves detonate under a moderate mechanical shock or heat with sufficient force to explode the main charge. |
| A blasting cap or exploder is a small charge of a detonator designed to be embedded in dynamite and ignited either by a burning fuse or a spark. |
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