Detection of the crack on pipe based on the modal analysis

9th Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, Flow-Induced Vibration & Noise

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Field Value
 
Title Detection of the crack on pipe based on the modal analysis
 
Creator liu shuyong; Naval university of engineering
 
Subject modal analyais, characteristic frequency, vibration rsponse, hammer excitation
 
Description The crack on the pipe is detected base on the modal analysis in this study. Firstly, the modal of the pipe with different crack size is simulated by comsol. The modal frequency is changed with the defection. The modal strain energy is presented to characterize the variation of the flaw pipe, which is significant index than the traditional method. Then, the experiment is carried out to measure the vibration response with the hammer excitation. Results show that when the crack is too small, the modal frequency is not varied obviously. However, the modal characteristics are changed in the low frequency band when the crack is serious or the pipe wall is become thin, which is beneficial to the NDT for the pipe in site.
 
Publisher Paper Management System for FIV2018
 
Contributor
 
Date 2018-05-14 14:36:41
 
Type Peer-reviewed Paper

 
Format application/pdf
 
Identifier http://www.fiv2018.com/ocs/index.php/fiv2018/fivcan/paper/view/122
 
Source Paper Management System for FIV2018; FIV2018 Conference
 
Language en
 
Rights Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference.<br /> <strong>b)</strong> Authors are able to waive the terms of the CC license and enter into separate, additional contractual arrangements for the non-exclusive distribution and subsequent publication of this work (e.g., publish a revised version in a journal, post it to an institutional repository or publish it in a book), with an acknowledgement of its initial presentation at this conference.<br /> <strong>c)</strong> In addition, authors are encouraged to post and share their work online (e.g., in institutional repositories or on their website) at any point before and after the conference.
 

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