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Paper Abstract and Keywords
Presentation 2012-05-29 10:55
A study of bolt fastening evaluation using second harmonic ultrasonic pulse waves
Makoto Fukuda, Oki Yonai, Kazuhiko Imano (Akita Univ.) NLP2012-36
Abstract (in Japanese) (See Japanese page) 
(in English) Finite amplitude ultrasonic waves were transmitted into fastened bolt and second harmonic ultrasonic components generated from the bolt were detected. The relation between torque and second harmonic component were considered. Second harmonic components increased as torque increased. In the smaller torque than the optimal torque of the bolt, second harmonic components were generated by contact acoustic nonlinearity in the surface of the screw of a bolt and a nut. In the larger torque than the optimal torque, second harmonic components were generated by both the contact acoustic nonlinearity and the plastic deformation of the bolt and the nut. Moreover, the relation between the sound pressure of the ultrasonic waves and second harmonic components were considered. The variations of the second harmonic components in the larger torque were smaller than the variations in the smaller torque when the sound pressure was increased. Second harmonic ultrasonic components can be useful for evaluation of the bolt fastening.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasonic wave / Second harmonic component / Contact acoustic nonlinearity / Bolt / Torque / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 69, NLP2012-36, pp. 55-58, May 2012.
Paper # NLP2012-36 
Date of Issue 2012-05-21 (NLP) 
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 NLP  
Conference Date 2012-05-28 - 2012-05-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Akita City Exchange Plaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NLP 
Conference Code 2012-05-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of bolt fastening evaluation using second harmonic ultrasonic pulse waves 
Sub Title (in English)  
Keyword(1) Ultrasonic wave  
Keyword(2) Second harmonic component  
Keyword(3) Contact acoustic nonlinearity  
Keyword(4) Bolt  
Keyword(5) Torque  
1st Author's Name Makoto Fukuda  
1st Author's Affiliation Akita University (Akita Univ.)
2nd Author's Name Oki Yonai  
2nd Author's Affiliation Akita University (Akita Univ.)
3rd Author's Name Kazuhiko Imano  
3rd Author's Affiliation Akita University (Akita Univ.)
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Date Time 2012-05-29 10:55:00 
Presentation Time 25 
Registration for NLP 
Paper # IEICE-NLP2012-36 
Volume (vol) IEICE-112 
Number (no) no.69 
Page pp.55-58 
#Pages IEICE-4 
Date of Issue IEICE-NLP-2012-05-21 

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