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Paper Abstract and Keywords
Presentation 2018-04-26 15:55
Measurements of acoustic power using water surface displacement induced by acoustic radiation pressure -- Relationship between sound pressure and measured acoustic power --
Masaya Shimomura, Hideyuki Nomura (UEC) US2018-7
Abstract (in Japanese) (See Japanese page) 
(in English) When sounds are impinging on the water-air boundary from water, the water surface is deformed by acoustic radiation pressure. We have proposed acoustic power measurement using water surface deformation. In this report, the relationship between the acoustic power of a focused transducer estimated by the proposed method and the sound pressure at a focal point was experimentally examined by varying sound pressure. The result showed that the estimated sound power was proportional to the square of sound pressure in a relatively low sound pressure region, however, the increase of sound pressure broke that relationship. This result suggests that the proposed method has an applicable sound pressure or power region, and the modification of the relation between water surface displacement and radiation pressure is needed for utilization of this method for high-intense ultrasound.
Keyword (in Japanese) (See Japanese page) 
(in English) Acoustic radiation pressure / Acoustic power / Focused transducer / / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 14, US2018-7, pp. 35-39, April 2018.
Paper # US2018-7 
Date of Issue 2018-04-19 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF US2018-7

Conference Information
Committee US  
Conference Date 2018-04-26 - 2018-04-26 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To US 
Conference Code 2018-04-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurements of acoustic power using water surface displacement induced by acoustic radiation pressure 
Sub Title (in English) Relationship between sound pressure and measured acoustic power 
Keyword(1) Acoustic radiation pressure  
Keyword(2) Acoustic power  
Keyword(3) Focused transducer  
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1st Author's Name Masaya Shimomura  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Hideyuki Nomura  
2nd Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2018-04-26 15:55:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2018-7 
Volume (vol) vol.118 
Number (no) no.14 
Page pp.35-39 
#Pages 5 
Date of Issue 2018-04-19 (US) 

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