What is the main difference between a low and high explosive?

Explosives fall into two categories – high explosives and low explosives. The main difference between these two categories is the velocity of detonation. High explosives detonate at a rate greater than the speed of sound whereas low explosives deflagrate. Deflagration involves particle to particle burning.

What is JWL equation of state?

The JWL equation of state (EOS) is frequently used for the products (and sometimes reactants) of a high explosive (HE). Here we review and systematically derive important properties. The JWL EOS is of the Mie-Grueneisen form with a constant Grueneisen coefficient and a constants specific heat.

What are the 3 categories of high explosives that are determined by their?

High explosives are divided into three main categories, Primary (or Initiating) High Explosives, Secondary High Explosives, Boosters and Secondary High Explosives, Main Charge. As with many of the terms associated with explosions, there is also other terms that describe combustion explosions, “Deflagration Explosion”.

How do you calculate detonation velocity?

The formula is: D = a + bρ (1.1) 2 Page 13 It is suggested that the density be within 0.85 of the TMD for this equation to be accurate within 10% to 15%. One method set forth by Kalmet and Jacobs [9] uses a specific hierarchy for the detonation products to estimate detonation velocity.

What is the difference between a high explosive and a low explosive quizlet?

What is the difference between low explosives and high explosives? Low explosives are explosives with a velocity of detonation less than 1,000 meters per second. High explosives are an explosive with a velocity of detonation greater than 1,000 meters per second.

What are the two classes of high explosives What is the difference between the two classes?

Detonating explosives, such as TNT and dynamite, are characterized by extremely rapid decomposition and development of high pressure, whereas deflagrating explosives, such as black and smokeless powders, involve merely fast burning and produce relatively low pressures.

What does JWL mean on a rim?

Japan Light Alloy Wheel standard
JWL standard (Japan Light Alloy Wheel standard), a set of requirements for alloy wheels set by the Ministry of Land, Infrastructure, Transport and Tourism (Japan) that must be met for all passenger cars in Japan.

What is the characteristics of low explosives?

Low Explosives: Low explosives deflagrate rather than detonate. Their reaction velocities are 2000 to less than 3000 feet per second. Black powder is a good example. These materials normally have little water resistance, are highly flammable, sensitive to a No.

What is the difference between an explosion and a detonation?

An explosion is a rapid expansion in volume associated with an extremely vigorous outward release of energy, usually with the generation of high temperatures and release of high-pressure gases. Supersonic explosions created by high explosives are known as detonations and travel through shock waves.

How is the strength of explosive be determined?

Explosive strength is measured by, for example, the Trauzl lead block test. An explosion may occur under two general conditions: the first, unconfined, as in the open air where the pressure (atmospheric) is constant; the second, confined, as in a closed chamber where the volume is constant.

What is the difference between detonation and deflagration?

3.2 Deflagration and Detonation. Explosives are those substances that have their own supply of oxygen in their molecules. When they are initiated, they may either burn violently (deflagrate) or explode disastrously generating shock waves (detonate).

What is the property of low explosives?