Pressure Measurements of Aluminized Explosives Detonation Front with Different Aluminum Particle Size

Pei, Hong Bo; Jiao, Qing; Jin, Zhao

doi:10.4028/www.scientific.net/amr.750-752.2156

AMR

2013

DOI: 10.4028/www.scientific.net/amr.750-752.2156

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Pressure Measurements of Aluminized Explosives Detonation Front with Different Aluminum Particle Size

Hong Bo Pei

Qing Jiao

Zhao Jin

Abstract: Detonation pressure profiles in TNT/RDX and its mixtures with aluminum powders of different particle size have been studied with Manganin piezoresistance gauge. The measured detonation pressure accorded with the calculated detonation pressure. The results show that micrometer aluminum powders reacted with detonation at times of 0.5μs after the peak pressure. Aluminum powders did not react in the detonation zone, and introducing aluminum into explosive would reduce the detonation pressure. Compare with micromet… Show more

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Cited by 4 publications

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Improved method for prediction of detonation velocity for C−H−N−O based pure, mixed and aluminized explosives

Kumar,

Mehta,

Kumar

et al. 2024

Propellants Explo Pyrotec

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An improved method is presented for the prediction of detonation velocity of C−H−NO based pure, mixed, and aluminized explosives. The new empirical relation is based on calculated values of the heat of detonation and the number of moles of gaseous detonation products. A constant of the empirical relation has been found using regression analysis of 74 data points of pure and mixed explosives as well as 22 data points of aluminized explosives. The value of the constant is found to be 1.00 with R2 value of 0.96. Proposed empirical relation has been validated by comparing predicted values of detonation velocities with measured values for TNT, HMX/RDX‐TNT‐Al and HMX‐TNT based explosives. Experimental measurement of detonation velocity has been carried out using pin‐ionization method on cylindrical explosive charges of diameter 50 mm and height 150 mm. The predicted values of detonation velocities are in good agreement with measured values with a root mean square error of 1.28 %. The validation of the new relation has also been carried by comparing calculated values of detonation velocities using present and literature methods with reported experimental values.

show abstract

Improved method for prediction of detonation velocity for C−H−N−O based pure, mixed and aluminized explosives

Kumar,

Mehta,

Kumar

et al. 2024

Propellants Explo Pyrotec

View full text Add to dashboard Cite

show abstract

New X-ray based characterization technique for aluminized explosives and effect of aluminum proportion on velocity of detonation

Kumar,

Singh

et al. 2024

FirePhysChem

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Size effect of explosive particle on shock initiation of aluminized 2,4-dinitroanisole (DNAN)-based melt-cast explosive

Duan

Gao

et al. 2020

Journal of Applied Physics

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An aluminized melt-cast Duan–Zhang–Kim mesoscopic reaction rate model based on the pore collapse hot-spot ignition mechanism is proposed to characterize the shock initiation behavior as well as size effects of explosive particles on the shock initiation of aluminized melt-cast explosives. For aluminized 2,4-dinitroanisole (DNAN)-based melt-cast R1 explosives [containing 60 wt. % HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazoncine), 30 wt. % DNAN, and 10 wt. % aluminium] with different particle sizes of HMX, both shock initiation experiments and corresponding numerical simulations were performed. The numerical results are found to be in good agreement with the experimental data, by which the mesoscopic reaction rate model is verified and the model parameters for the R1 explosive are determined. It is also found that the smaller the particle size of the granular explosive component, the faster the leading shock wave propagates, and the faster the detonation growth inside the aluminized melt-cast explosive.

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Pressure Measurements of Aluminized Explosives Detonation Front with Different Aluminum Particle Size

Cited by 4 publications

References 5 publications

Improved method for prediction of detonation velocity for C−H−N−O based pure, mixed and aluminized explosives

Improved method for prediction of detonation velocity for C−H−N−O based pure, mixed and aluminized explosives

New X-ray based characterization technique for aluminized explosives and effect of aluminum proportion on velocity of detonation

Size effect of explosive particle on shock initiation of aluminized 2,4-dinitroanisole (DNAN)-based melt-cast explosive

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