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 |
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) |
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NLP2012-36 |
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) |
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Keyword(1) |
Ultrasonic wave |
Keyword(2) |
Second harmonic component |
Keyword(3) |
Contact acoustic nonlinearity |
Keyword(4) |
Bolt |
Keyword(5) |
Torque |
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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 |
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Akita University (Akita Univ.) |
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Speaker |
Author-1 |
Date Time |
2012-05-29 10:55:00 |
Presentation Time |
25 minutes |
Registration for |
NLP |
Paper # |
NLP2012-36 |
Volume (vol) |
vol.112 |
Number (no) |
no.69 |
Page |
pp.55-58 |
#Pages |
4 |
Date of Issue |
2012-05-21 (NLP) |
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