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Paper Abstract and Keywords
Presentation 2012-08-27 10:40
Focal range control of focused ultrasonic field by curvature changing of transducer
Jungsoon Kim (Tongmyong Univ.), Moojoon Kim, Kanglyeol Ha (Pukyong National Univ.) US2012-33
Abstract (in Japanese) (See Japanese page) 
(in English) In the underwater imaging field, the control of the focal length of a transducer is very useful. As one of the control methods, we suggested an ultrasonic array transducer with adjustable curvature by using air pressure. The curvature of the transducer was investigated according to the air pressure level in the back space of the transducer. Concave-, planar-, and convex-type transducers were obtained with different air pressure levels. The acoustic fields of the transducer were measured for different shapes of the radiation surface.
Keyword (in Japanese) (See Japanese page) 
(in English) Focal Length Control / Concave / Convex / Planar / Curvature / Air Pressure Level / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 186, US2012-33, pp. 1-4, Aug. 2012.
Paper # US2012-33 
Date of Issue 2012-08-20 (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 US2012-33

Conference Information
Committee US  
Conference Date 2012-08-27 - 2012-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Pukyong National University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General, Underwater Acoustics (Co-Organization：The Marine Acoustics Society of Japan, Youngnam Chapter of The Acoustical Society of Korea) 
Paper Information
Registration To US 
Conference Code 2012-08-US 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Focal range control of focused ultrasonic field by curvature changing of transducer 
Sub Title (in English)  
Keyword(1) Focal Length Control  
Keyword(2) Concave  
Keyword(3) Convex  
Keyword(4) Planar  
Keyword(5) Curvature  
Keyword(6) Air Pressure Level  
Keyword(7)  
Keyword(8)  
1st Author's Name Jungsoon Kim  
1st Author's Affiliation Dept. of Media Engineering, Tongmyong University (Tongmyong Univ.)
2nd Author's Name Moojoon Kim  
2nd Author's Affiliation Dept. of Physics, Pukyong National University (Pukyong National Univ.)
3rd Author's Name Kanglyeol Ha  
3rd Author's Affiliation Dept. of Physics, Pukyong National University (Pukyong National Univ.)
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Speaker Author-1 
Date Time 2012-08-27 10:40:00 
Presentation Time 20 minutes 
Registration for US 
Paper # US2012-33 
Volume (vol) vol.112 
Number (no) no.186 
Page pp.1-4 
#Pages 4 
Date of Issue 2012-08-20 (US) 

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