Science and Technology of Energetic Materials

Vol.68, No.1 (2007)


Experimental study on blast wave generated by deflagration of hydrogen-air mixture up to 200 m3
Kunihiko Wakabayashi, Yoshio Nakayama, Toshio Mogi, Dongjoon Kim, Takayuki Abe, Koki Ishikawa, Eishi Kuroda, Tomoharu Matsumura, Sadashige Horiguchi, Masaaki Oya, and Shuzo Fujiwara


Field explosion tests have been performed to obtain fundamental data concerning the explosion strength generated by a stoichiometric mixture of hydrogen and air. Hydrogen-air mixtures filled in a tent covered with thin plastic sheets were ignited by an electric spark to explode. The generated blast wave was measured with piezoelectric pressure sensors. Deflagration tests with volumes of 9.4, 75, and 200 m3 were carried out to investigate the scale effect (i.e. volume dependency) of peak overpressure and blast wave impulse. Obtained data show that peak overpressure and impulse exhibit different volume dependencies.

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Stoichiometric mixture of hydrogen and air, Electric spark ignition, Deflagration, Blast wave, Scale effect

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