Science and Technology of Energetic Materials

Vol.68, No.2 (2007)

Research paper

Blast waves generated by detonation of 31 m3 hydrogen-air mixtures
Kunihiko Wakabayashi, Yoshio Nakayama, Toshio Mogi, Dongjoon Kim, Takayuki Abe, Koki Ishikawa, Eishi Kuroda, Tomoharu Matsumura, Sadashige Horiguchi, Masaaki Oya, and Shuzo Fujiwara


Fieldp explosion tests of three hydrogen-air mixtures having a volume of 31 m3 were carried out. The hydrogen contents of the mixtures were 21.0, 28.7, and 52.9 volume %. Each mixture was ignited by 0.1 kg of Composition C-4 explosive and guided to detonation. Blast waves caused by detonation of a mixture were measured by piezoelectric pressure sensors. The measured peak overpressures and impulses were comparable in intensity to those of the TNT equivalent in lower heating value. The results reveal that the strength of a blast wave generated by detonation of a hydrogen-air mixture is approximately the same as that of a TNT explosive.

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Field explosion test, Hydrogen-air mixture, Explosive ignition, Detonation, Blast wave

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