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Paper Abstract and Keywords
Presentation 2019-02-22 13:25
Receiving directivity of probe and analysis of virtual image in air coupled ultrasonic
Yuusuke Tanaka, Masaaki Noji, Nobuhiro Tsuge, Yukio Ogura (Japan Probe) US2018-112
Abstract (in Japanese) (See Japanese page) 
(in English) A virtual image may be generated when the specimen is imaged with aerial ultrasonic flaw detection. The virtual image is due to the received signal amplitudes fluctuating by receiving the signal spread by multiple reflection in the specimen with the concave receiving probe. As the signal of the receiving probe is combined with the signals of the receiving surfaces, it seems that directivity and focal position are generated. It is stated that the received signal of the concave receiving probe is examined by simulation and the situation where the signal of the focal position is emphasized is the time when plural scattering signals are generated. When a plane signal is received, it is confirmed that when the concave aperture angle is large, a time difference occurs between reception points, the reception intensity decreases, and the wavelength of the reception waveform also increases. When receiving, virtual images can be reduced by making small reception surface with less reception time difference.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasonic / Non-contact / Air / Virtual image / Receiving waveform / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 452, US2018-112, pp. 21-26, Feb. 2019.
Paper # US2018-112 
Date of Issue 2019-02-15 (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 US2018-112

Conference Information
Committee US  
Conference Date 2019-02-22 - 2019-02-22 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To US 
Conference Code 2019-02-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Receiving directivity of probe and analysis of virtual image in air coupled ultrasonic 
Sub Title (in English)  
Keyword(1) Ultrasonic  
Keyword(2) Non-contact  
Keyword(3) Air  
Keyword(4) Virtual image  
Keyword(5) Receiving waveform  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yuusuke Tanaka  
1st Author's Affiliation Japan Probe Co., Ltd. (Japan Probe)
2nd Author's Name Masaaki Noji  
2nd Author's Affiliation Japan Probe Co., Ltd. (Japan Probe)
3rd Author's Name Nobuhiro Tsuge  
3rd Author's Affiliation Japan Probe Co., Ltd. (Japan Probe)
4th Author's Name Yukio Ogura  
4th Author's Affiliation Japan Probe Co., Ltd. (Japan Probe)
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Speaker Author-1 
Date Time 2019-02-22 13:25:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2018-112 
Volume (vol) vol.118 
Number (no) no.452 
Page pp.21-26 
#Pages 6 
Date of Issue 2019-02-15 (US) 

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