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Paper Abstract and Keywords
Presentation 2017-05-22 15:50
Experimental Investigation on High Intensity Ultrasound Source System using Cylindrical Acoustic Waveguide and Concave Type Transducer for Calibration of Hydrophone
Shigeru Igarashi (Polytechnic Univ.), Takeshi Morishita (TOIN Univ. of Yokohama), Takeyoshi Uchida (AIST), Shinichi Takeuchi (TOIN Univ. of Yokohama) US2017-19
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, the high intensity ultrasound equipment has increased in both medical and industrial filed. Therefore, we have proposed high intensity ultrasound source system by using a cylindrical acoustic waveguide and a concave transducer. It is aimed at the development of ultrasound source which is able to transmit high intensity ultrasound waves for absolute calibrations for receiving sensitivity of hydrophones. Furthermore, we constructed the experimental ultrasound source system using the concave transducer and the cylindrical acoustic waveguide which was fabricated by considering material selection and cutting methods of closed cell type sponge. The spatial distributions of acoustic pressure on central axis and lateral axis for our fabricated ultrasound source were measured, it was found that the acoustic pressure distributions were similar between measured results and simulated results using axisymmetric three-dimensional acoustic filed simulation by finite element method, in particular, measured and simulated -6 dB main beam width was matched within 15%. In this paper, acoustic pressure of 670 kPa was confirmed at position 10 mm from transmitting aperture on the central axis.
Keyword (in Japanese) (See Japanese page) 
(in English) Acoustic waveguide / Ultrasound source / Hydrohpne / Sensitivity calibration / Transducer / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 41, US2017-19, pp. 27-32, May 2017.
Paper # US2017-19 
Date of Issue 2017-05-15 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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)
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Conference Information
Committee US  
Conference Date 2017-05-22 - 2017-05-22 
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Paper Information
Registration To US 
Conference Code 2017-05-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental Investigation on High Intensity Ultrasound Source System using Cylindrical Acoustic Waveguide and Concave Type Transducer for Calibration of Hydrophone 
Sub Title (in English)  
Keyword(1) Acoustic waveguide  
Keyword(2) Ultrasound source  
Keyword(3) Hydrohpne  
Keyword(4) Sensitivity calibration  
Keyword(5) Transducer  
1st Author's Name Shigeru Igarashi  
1st Author's Affiliation Polytechnic University (Polytechnic Univ.)
2nd Author's Name Takeshi Morishita  
2nd Author's Affiliation TOIN University of Yokohama (TOIN Univ. of Yokohama)
3rd Author's Name Takeyoshi Uchida  
3rd Author's Affiliation Advanced Industrial Science and Technology (AIST)
4th Author's Name Shinichi Takeuchi  
4th Author's Affiliation TOIN University of Yokohama (TOIN Univ. of Yokohama)
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Speaker Author-1 
Date Time 2017-05-22 15:50:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2017-19 
Volume (vol) vol.117 
Number (no) no.41 
Page pp.27-32 
Date of Issue 2017-05-15 (US) 

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