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Science and Technology of Energetic Materials

Vol.72, No.1 (2011)

Research paper

Blast pressure measurement of TNT and commercial explosives above the ground(*in Japanese)
Hiroyuki Arai and Reiko I. Hiyoshi
p.1-8

Abstract

It is important to evaluate the blast wave parameters when the explosives or energetic materials explode above the ground in order to estimate the explosion effect in actual cases. In this paper, the peak overpressure and scaled impulse of positive phase, as the blast wave parameters, were measured when 0.8 to 50 kg of TNT exploded at 0.6 m height above the ground, and third order regression approximation lines were derived from these results. Each explosive was loaded in a cubic case in this paper, but there was no influence of the shape of the case on the blast wave parameters. The scale effect was not observed on emulsion explosive, but ANFO exhibited the scale effect, especially on the scaled impulse of positive phase.

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Keywords

blast wave, peak overpressure, scaled impulse of positive phase, scale effect

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