W. Wu
Guided waves-based damage identification in plates through an inverse Bayesian process
Wu, W.; Malik, M. K.; Cantero-Chinchilla, S.; Lawrie, T.; Yan, W. J.; Tanner, G.; Remenyte-Prescott, R.; Chronopoulos, D.
Authors
M. K. Malik
S. Cantero-Chinchilla
T. Lawrie
W. J. Yan
GREGOR TANNER GREGOR.TANNER@NOTTINGHAM.AC.UK
Professor of Applied Mathematics
RASA REMENYTE-PRESCOTT R.REMENYTE-PRESCOTT@NOTTINGHAM.AC.UK
Associate Professor
D. Chronopoulos
Abstract
The use of guided waves to identify damage has become a popular method due to its robustness and fast execution, as well as the advantage of being able to inspect large areas and detect minor structural defects. When a travelling wave on a plate interacts with a defect, it generates a scattered field that will depend on the defects geometry. By analysing the scattered field, one can thus characterize the type and size of the plate damage. A Bayesian framework based on a guided waves interaction model for damage identification of infinite plate for the first time is presented here. A semi-analytical approach based on the lowest order plate theories is adopted to obtain the scattering features for damage geometries with circular symmetry, resulting in an efficient inversion procedure. Subsequently, ultrasound experiments are performed on a large aluminium plate with a circular indentation to generate wave reflection and transmission coefficients. With the aid of signal processing techniques, the effectiveness and efficiency of the proposed approach are verified. A full finite element model is used to test the damage identification scheme. Finally, the scattering coefficients are reconstructed, reliably matching the experimental results. The framework supports digital twin technology of structural health monitoring.
Citation
Wu, W., Malik, M. K., Cantero-Chinchilla, S., Lawrie, T., Yan, W. J., Tanner, G., …Chronopoulos, D. (2022). Guided waves-based damage identification in plates through an inverse Bayesian process. Ultrasonics, 125, Article 106773. https://doi.org/10.1016/j.ultras.2022.106773
Journal Article Type | Article |
---|---|
Acceptance Date | May 18, 2022 |
Online Publication Date | Jun 2, 2022 |
Publication Date | Sep 1, 2022 |
Deposit Date | Jun 9, 2022 |
Publicly Available Date | Jun 9, 2022 |
Journal | Ultrasonics |
Print ISSN | 0041-624X |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 125 |
Article Number | 106773 |
DOI | https://doi.org/10.1016/j.ultras.2022.106773 |
Keywords | Acoustics and Ultrasonics |
Public URL | https://nottingham-repository.worktribe.com/output/8397130 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S0041624X22000816 |
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