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Paper Abstract and Keywords
Presentation 2008-09-25 15:00
Generation of Lamb wave and Its Application to NDE Using Double-Layed Piezoelectric Transducer
Makoto Fukuda, Kazuhiko Imano (Akita Univ.) US2008-35
Abstract (in Japanese) (See Japanese page) 
(in English) Lamb waves of finite amplitude are generated in a glass plate having closed cracks by using a double-layered piezoelectric transducer (DLPT) in opposing polarization direction, and second harmonic components generating from closed crack are detected by DLPT. As the results, second harmonic components including the waves reflected from closed crack area are increased by approximately 15 dB compared with these from no-crack area. Furthermore, Lamb waves of finite amplitude are generated in a glass plate having closed cracks by using a DLPT in aligning polarization direction, and subharmonic components generating from closed crack are also detected by DLPT. As the results, subharmonic components including the waves reflected from closed crack area are increased by approximately 5 dB compared with these from no-crack area. Usefulness of nonlinearity of Lamb wave for the nondestructive evaluation (NDE) in a pulse-echo method using DLPT is demonstrated.
Keyword (in Japanese) (See Japanese page) 
(in English) Lamb wave / Second Harmonic / Subharmonic / Closed crack / Double-Layered Piezoelectric Transducer / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 212, US2008-35, pp. 19-24, Sept. 2008.
Paper # US2008-35 
Date of Issue 2008-09-18 (US) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee US  
Conference Date 2008-09-25 - 2008-09-26 
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 2008-09-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Generation of Lamb wave and Its Application to NDE Using Double-Layed Piezoelectric Transducer 
Sub Title (in English)  
Keyword(1) Lamb wave  
Keyword(2) Second Harmonic  
Keyword(3) Subharmonic  
Keyword(4) Closed crack  
Keyword(5) Double-Layered Piezoelectric Transducer  
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Keyword(8)  
1st Author's Name Makoto Fukuda  
1st Author's Affiliation Akita University (Akita Univ.)
2nd Author's Name Kazuhiko Imano  
2nd Author's Affiliation Akita University (Akita Univ.)
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Speaker
Date Time 2008-09-25 15:00:00 
Presentation Time 30 
Registration for US 
Paper # IEICE-US2008-35 
Volume (vol) IEICE-108 
Number (no) no.212 
Page pp.19-24 
#Pages IEICE-6 
Date of Issue IEICE-US-2008-09-18 


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