Effect of Tungsten on Aluminized Melt Cast High Explosive Formulations

• Autorzy: Mishra V. S. , Bhagat. A. L. , Vadali S. R. , Singh V. K. , Wasnik R. D. , Asthana S.
• Języki publikacji: EN

Abstrakty

EN

Aluminized 2,4,6-trinitrotoluene (TNT) based, melt-cast, high explosive compositions are widely used in warheads. These compositions offer a blast effect over a larger period due to the secondary combustion of aluminum. During recent times tungsten based explosives have been reported for lethality at close range to avoid collateral damage in low intensity conflicts (LIC) and find application in shaped charges to enhance their penetration capability. This paper reports findings on tungsten-based, melt-cast, explosive formulations. The compositions were prepared by substituting aluminum with tungsten in the reference aluminized, high explosive formulation. The compositions were characterized for their sensitivity to mechanical/shock stimuli, velocity of detonation (VOD) and blast performance. The study reveals that the impact sensitivity remains comparable on incorporating 10% tungsten at the cost of aluminum whereas an increase in tungsten content to 20% leads to an increase in impact sensitivity. However friction sensitivity and shock sensitivity remained more or less unchanged. The velocity of detonation (VOD) of tungsten-loaded, aluminized formulations is found to be comparable to the standard aluminized formulation. The peak over pressure of tungsten-based formulations is lower than the reference, aluminized composition at close range but is almost unchanged at long range. The impulse of tungsten-based formulations is also lower than the reference, aluminized composition. The reduction in impulse at close range is substantial on replacing 10% aluminum with inert tungsten.

Słowa kluczowe

EN

tungsten; MOUT; low intensity conflict; peak over pressure; impulse

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2012
• Tom: Vol. 9, nr 2
• Strony: 147--154
• Opis fizyczny: Bibliogr. 4 poz.

Twórcy

autor

Mishra V. S.

autor

Bhagat. A. L.

autor

Vadali S. R.

autor

Singh V. K.

autor

Wasnik R. D.

autor

Asthana S.

• High Energy Materials Research Laboratory, Sutarwadi, Pune-411021, India,

Bibliografia

• [1] Vadhe et al., Cast aluminized explosives, Combustion, Explosions and Shock Waves, 2008, 44, 461-467.
• [2] Weinland et al., High Impulse explosives containing tungsten, US patent 3,528,864, 1970.
• [3] Spencer et al., High density tungsten – loaded castable explosive, US Patent 5,910,638, 1999.
• [4] Hisaatsu Kato, Kenji Murata, Shigeru Itoh, Yukio Kato, Application of Overdriven Detonation in High Density Explosive to Shaped Charge, 23rd International Symposium on Ballistics, Tarragona, Spain, April 16-20, 2007, 223-230.