Experimental Research of the Effect of Ambient Humidity on the Explosion Characteristic Parameters of Aluminum Powder

doi:10.3969/j.issn.1000-1093.2013.08.007

Abstract

Abstract:

In order to assess the explosion risk of aluminum powder comprehensively, the influence of humidity on aluminum powder explosion is studied in a explosion tank. The maximum explosion pressure and the maximum pressure rise rate of aluminum powder explosion were obtained at the relative humidities of 33%, 60% and 90%, respectively. It is shown that the relative humidity usually distinctively affects the probability of aluminum powder explosion, and the effect is related with dust concentration. When dust concentration is lower, with the increase in ambient humidity, the maximum explosion pressure and the maximum pressure rise rate first increase and then decrease; but when dust concentration is higher, the maximum explosion pressure and the maximum pressure rise rate are significantly increased with the increase of the ambient humidity. Meanwhile, based on the nonlinear fitting of experimental data, the DoseResp function between the maximum explosion pressure and aluminum powder concentration at different ambient humidity is obtained.

Key words: explosion mechanics, explosion parameter, pressure test, aluminum powder, ambient hu- midity

CLC Number:

TQ560. 72

TAN Ru-mei, ZHANG Qi. Experimental Research of the Effect of Ambient Humidity on the Explosion Characteristic Parameters of Aluminum Powder[J]. Acta Armamentarii, 2013, 34(8): 965-969.

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