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Science and Technology of Energetic Materials

Vol.64, No.2 (2003)

Research paper-ISEM2002 proceeding-

Experimental study on the attenuation of blast waves by a water layer
Dongjoon Kim, Yoshio Nakayama, Tomoharu Matsumura, Ken Okada, Atsumi Miyake, Terushige Ogawa, and Masatake Yoshida
p.97-100

Abstract

The present paper describes the relationship between the thickness of a water layer and its attenuation effect on blast waves. The blast waves passing through the water layer were measured using piezoelectric sensors. The results show that peak overpressures and scaled impulses were reduced by approximately 97% and 87%, respectively at a scaled depth of 11.3m·kg-1/3. The water layer is confirmed to be extremely effective in attenuating blast waves.
   The impedance mismatch method was employed in order to estimate the blast wave pressure. It was found that the blast wave pressure could be estimated by the impedance mismatch method for scaled depths deeper than 4m·kg-1/3.

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