A robust Bayesian methodology for damage localization in plate-like structures using ultrasonic guided-waves

Cantero-Chinchilla, Sergio; Chiachío, Manuel; Chiachío, Juan; Chronopoulos, Dimitrios; Jones, Arthur

Abstract

SHM methods for damage detection and localization in plate-like structures have typically relied on signal post-processing techniques applied to ultrasonic guided-waves. The time of flight is one of these signals features which has been extensively used by the SHM community for damage localization. One approach for obtaining the time of flight is by applying a particular time-frequency transform to capture the frequency and energy content of the wave at each instant of time. To this end, the selection of a suitable methodology for time-frequency transform among the many candidates available in the literature has typically relied on experience, or simply based on considerations about computational efficiency. In this paper, a full probabilistic method based on the Bayesian inverse problem is proposed to rigorously provide a robust estimate of the time of flight for each sensor independently. Then, the robust prediction is introduced as an input to the Bayesian inverse problem of damage localization. The results reveal that the proposed methodology is able to efficiently reconstruct the damage localization within a metallic plate without the need to assume a specific a priori time-frequency transform model.

Citation

Cantero-Chinchilla, S., Chiachío, M., Chiachío, J., Chronopoulos, D., & Jones, A. (2019). A robust Bayesian methodology for damage localization in plate-like structures using ultrasonic guided-waves. Mechanical Systems and Signal Processing, 122, 192-205. https://doi.org/10.1016/j.ymssp.2018.12.021

• Journal Article Type: Article
• Acceptance Date: Dec 10, 2018
• Online Publication Date: Dec 21, 2018
• Publication Date: May 1, 2019
• Deposit Date: Jan 8, 2019
• Publicly Available Date: Dec 22, 2019
• Journal: Mechanical Systems and Signal Processing
• Print ISSN: 0888-3270
• Electronic ISSN: 1096-1216
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 122
• Pages: 192-205
• DOI: https://doi.org/10.1016/j.ymssp.2018.12.021
• Keywords: Bayesian inverse problem; Ultrasonic guided-waves; Time of flight; Damage localization; Multiple damage areas; Structural Health Monitoring
• Public URL: https://nottingham-repository.worktribe.com/output/1452785
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0888327018308008
• Additional Information: This article is maintained by: Elsevier; Article Title: A robust Bayesian methodology for damage localization in plate-like structures using ultrasonic guided-waves; Journal Title: Mechanical Systems and Signal Processing; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.ymssp.2018.12.021; Content Type: article; Copyright: © 2018 Elsevier Ltd. All rights reserved.