Explosion Features of Liquid Explosive Materials - Liquid Explosives - page 57

Fig. 2.20 The oxygen balance and work capacity of an liquid explosive. 1 TNT; 2 ethyl nitrate; 3
2,2-dinitropropane; 4 special Kuehl; 5 taean; 6 diethyleneglycol dinitrate; 7 NG; 8 hexanitro-
mannite; 9 Hexanitroethane; 10 tetranitromethane

2.3.3 Brisance of Liquid Explosives [ 18 , 19 , 21 , 22 ]

The work capacity of a liquid explosive determines its damage ability. The brisance
of a liquid explosive shows its local damaging effects. Local damaging effects are
also the direct effects or brisant effects. It refers the violent effect of detonation
products to the surrounding media or contact staff and causes the intense damage of
direct contact objects. The brisance of explosives is widely applied in rock blasting,
explosion working, explosive welding, throwing objects by explosion, steel cutting
of explosion, bridge destruction, broken pieces of projectile explosion, antitank, etc.
The direct effect of explosion only occurs within the close enough range. Only
within close enough range, detonation products have enough energy density and
high enough pressure to damage the contact objectives. The detonation theory
refers that the initial stage of product expansion from condensed explosives follows
state equation.

P q c ¼

ðc Þ

Constant 3

are the pressure and density of detonation products.
For explosives with general brisance, when the expansion of detonation products
increases to 1.5 times of the original radius, the pressure drops to

Here, P and ˁ

000 kg/cm 2 ;

which is less effect for metal, i.e., high-intensity objects. Although the energy
density of liquid explosives is higher than explosives with general brisance, their
shock waves attenuate faster. The direct effect of detonation products is distinctly
displayed only when the explosives contact targets or the targets are within very
close range to objectives.

2 ;