Boundary element modelling of ultrasonic Lamb waves for structural health monitoring
File(s)
Published version
Author(s)
Sharif Khodaei, Zahra
Li, Jun
Aliabadi, MH
Type
Journal Article
Abstract
In this paper, a novel boundary element plate formulation is proposed to model ultrasonic Lamb waves in both pristine and cracked plates for structural health monitoring (SHM) applications. Lamb waves are generated and sensed by piezoelectric discs. An equivalent pin-force model is newly proposed to represent the actuation effect of piezoelectric discs, which is more accurate than the classical pin-force model. The boundary element formulation is presented in the Laplace-transform domain based on plate theories, which allows three-dimensional analysis of Lamb wave behaviours, such as propagation and interaction with cracks, in thin-walled structures. A damage detection algorithm is used for crack localization alongside the BEM-simulated data. The BEM solutions show excellent agreement with both 3D finite element simulation and experimental results.
Date Issued
2020-09-11
Date Acceptance
2020-07-16
Citation
Smart Materials and Structures, 2020, 29, pp.1-19
ISSN
0964-1726
Publisher
IOP Publishing
Start Page
1
End Page
19
Journal / Book Title
Smart Materials and Structures
Volume
29
Copyright Statement
© 2020 IOP Publishing Ltd. As the Version of Record of this article is going to be / has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted
Manuscript is available for reuse under a CC BY 3.0 licence immediately.
Everyone is permitted to use all or part of the original content in this article, provided that they adhere to all the terms of the licence
https://creativecommons.org/licences/by/3.0
Manuscript is available for reuse under a CC BY 3.0 licence immediately.
Everyone is permitted to use all or part of the original content in this article, provided that they adhere to all the terms of the licence
https://creativecommons.org/licences/by/3.0
License URL
Identifier
https://iopscience.iop.org/article/10.1088/1361-665X/aba6ce
Subjects
Materials
03 Chemical Sciences
09 Engineering
Publication Status
Published
Date Publish Online
2020-09-11