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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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
Date 2018-05-14 14:36:41
Type Peer-reviewed Paper

Format application/pdf
Source Paper Management System for FIV2018; FIV2018 Conference
Language en
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