Expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface

This paper reports an experimental result of expansion wave and cavitation bubble generation by underwater shock wave reflection at the interface for understanding of shock wave interaction phenomena related to the mechanism of shock wave human tissue damage. Underwater shock wave was generated by d...

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Autores principales:	Kiyonobu OHTANI, Toshihiro OGAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	shock wave expansion wave acoustic impedance shadowgraph pressure history Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/998dda8d66994bd19daa33769f675962
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spelling	oai:doaj.org-article:998dda8d66994bd19daa33769f6759622021-11-26T06:58:32ZExpansion wave and cavitation bubble generation by underwater shock wave reflection from the interface2187-974510.1299/mej.16-00298https://doaj.org/article/998dda8d66994bd19daa33769f6759622016-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/6/3_16-00298/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper reports an experimental result of expansion wave and cavitation bubble generation by underwater shock wave reflection at the interface for understanding of shock wave interaction phenomena related to the mechanism of shock wave human tissue damage. Underwater shock wave was generated by detonating a micro-explosive (silver azide pellet). The process of underwater shock wave reflection at the interface, expansion wave and cavitation bubble generation were visualized by shadowgraph method and recorded by an ultra-high-speed framing camera at high spatiotemporal resolution. The pressure time history near the interface in water was measured simultaneously by a needle hydrophone. High-speed shadowgraph sequential images show that a compression wave (shock wave) was reflected from a thin interface plate (Polystyrene, acrylic, Teflon, thickness of t=0.5 mm), and expansion wave was then generated in water by reflection from the air. In addition, a cavitation bubble was created behind the expansion wave. The simultaneously measured pressure history also shows that an expansion wave propagated behind shock wave. The negative peak pressure of expansion wave in the case of a thin plate shock wave interaction was larger than that in water surface interaction.Kiyonobu OHTANIToshihiro OGAWAThe Japan Society of Mechanical Engineersarticleshock waveexpansion waveacoustic impedanceshadowgraphpressure historyMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 6, Pp 16-00298-16-00298 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	shock wave expansion wave acoustic impedance shadowgraph pressure history Mechanical engineering and machinery TJ1-1570
spellingShingle	shock wave expansion wave acoustic impedance shadowgraph pressure history Mechanical engineering and machinery TJ1-1570 Kiyonobu OHTANI Toshihiro OGAWA Expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface
description	This paper reports an experimental result of expansion wave and cavitation bubble generation by underwater shock wave reflection at the interface for understanding of shock wave interaction phenomena related to the mechanism of shock wave human tissue damage. Underwater shock wave was generated by detonating a micro-explosive (silver azide pellet). The process of underwater shock wave reflection at the interface, expansion wave and cavitation bubble generation were visualized by shadowgraph method and recorded by an ultra-high-speed framing camera at high spatiotemporal resolution. The pressure time history near the interface in water was measured simultaneously by a needle hydrophone. High-speed shadowgraph sequential images show that a compression wave (shock wave) was reflected from a thin interface plate (Polystyrene, acrylic, Teflon, thickness of t=0.5 mm), and expansion wave was then generated in water by reflection from the air. In addition, a cavitation bubble was created behind the expansion wave. The simultaneously measured pressure history also shows that an expansion wave propagated behind shock wave. The negative peak pressure of expansion wave in the case of a thin plate shock wave interaction was larger than that in water surface interaction.
format	article
author	Kiyonobu OHTANI Toshihiro OGAWA
author_facet	Kiyonobu OHTANI Toshihiro OGAWA
author_sort	Kiyonobu OHTANI
title	Expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface
title_short	Expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface
title_full	Expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface
title_fullStr	Expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface
title_full_unstemmed	Expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface
title_sort	expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/998dda8d66994bd19daa33769f675962
work_keys_str_mv	AT kiyonobuohtani expansionwaveandcavitationbubblegenerationbyunderwatershockwavereflectionfromtheinterface AT toshihiroogawa expansionwaveandcavitationbubblegenerationbyunderwatershockwavereflectionfromtheinterface
_version_	1718409735832600576

Expansion wave and cavitation bubble generation by underwater shock wave reflection from the interface

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