Detonators Detonators A blasting cap is a small explosive device generally used to detonate a larger, more powerful explosive such as dynamite. ...more on Wikipedia about "Blasting cap"
Cordtex is a type of detonating cord generally used in mining. It uses an explosive core of pentaerythritol tetranitrate which is inside its plastic coating. See detonating cord. ...more on Wikipedia about "Cordtex"
A detonator is a device used to trigger bombs, shaped charges and other forms of explosive material and explosive devices. Detonators can be found in either electrical or non-electrical form. There are three categories of electrical detonators namely; instantaneous electrical detonators (IED), short period delay detonators (SPD) and long period delay detonators (LPD). SPDs are measured in milliseconds and LPDs are measured in seconds. Detonators can be chemical, mechanical, or electrical with the most common being mechanical and electrical. Explosive Ordnance Devices or EOD ( hand grenades, naval mines etc) mostly make use of mechanical detonators whilst the commercial use of explosives uses electrical detonators. Another form of detonator used in the commercial sector is that of the capped fuse which is a length of safety fuse to which an ordinary detonator has been crimped. Many detonators' primary (sensitive to heat, shock and friction) explosive is a material called ASA compound. This compound is formed from lead azide, lead styphnate and aluminium and is pressed into place above the base charge usually TNT or tetryl in military detonators and PETN in commercial detonators. Other materials such as DDNP ( diazo dinitro phenol) are also used as the primary charge to reduce the amount of lead emitted into the atmosphere by mining and quarrying operations. Old detonators used mercury fulminate as the primary, and it was often mixed with potassium chlorate to yield better performance. Detonators vary in size and strength. The only detonators used for military applications are #6 and #8 blasting caps. There are so many different types of blasting caps with different primaries and sizes that it is nearly impossible to put a number to a detonator any more. ...more on Wikipedia about "Detonator"
The exploding-bridgewire detonator (EBW, also known as exploding wire detonator) was invented by Luis Alvarez and Lawrence Johnson for the Fat Man-type bombs of the Manhattan Project, during their work in Los Alamos National Laboratory. (Cf. the slapper detonator, a further improvement of this approach.) ...more on Wikipedia about "Exploding-bridgewire detonator"
In an explosive device, a fuse (or fuze) is the part of the device that causes it to function. In common usage, the word fuse is used indiscriminately, but when being specific (and in particular in a military context), fuse is used to mean a simple pyrotechnic detonating device, like the cord on a firecracker, while fuze is used to mean a more complicated device, such as a proximity fuze. ...more on Wikipedia about "Fuse (explosives)"
Primacord is a registered trademark of detonating cord used in blasting, originally manufactured by the Ensign-Bickford Company of Utah. Ensign Bickford sold the trademark to Dyno Nobel Inc in 2003 and it is now manufactured in Graham, Kentucky. Primacord consists of a core of pure powdered PETN in an outer textile jacket (sometimes waxed), and is produced in 8 strengths: ...more on Wikipedia about "Primacord"
A slapper detonator is a relatively recent kind of a detonator developed in Lawrence Livermore National Laboratory. It is an improvement of the earlier exploding-bridgewire detonator; instead of directly coupling the shock wave from the exploding wire, the expanding plasma from an explosion of a metal foil drives another thin plastic or metal foil called a "flyer" or a "slapper" across a gap, and its high-velocity impact on the explosive (for example, hexanitrostilbene) then delivers the energy and shock needed to initiate a detonation. Normally all the slapper's kinetic energy is supplied only by the heating (and hence expansion) of the plasma (the former foil) by the current passing through it, though constructions with a "back strap" to further drive the plasma forward by magnetic field exist too. This assembly is quite efficient, up to 30% of the electrical energy can be converted to the slapper's kinetic energy. ...more on Wikipedia about "Slapper detonator"
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