Event-triggered passive–active guided wave monitoring for a PZT-embedded smart composite panel
Rattachement africain : cn, hk. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract Composite structures are vulnerable to impact-induced local anomalies that are often difficult to detect visually, necessitating structural health monitoring (SHM) methods capable of both impact localization and post-impact assessment. This study proposes an event-triggered passive–active SHM framework for a piezoelectric transducers (PZT)-embedded smart composite panel. The embedded PZT array functions as a unified sensing and actuation network, enabling a continuous procedure of passive impact localization and active damage detection. A PZT-embedded smart composite panel was fabricated, and tensile tests were performed to verify the mechanical compatibility of the sensor integration scheme. In the passive stage, impact localization was achieved through continuous wavelet transform, first-peak extraction, Gaussian-windowed cross-correlation, and probabilistic imaging. In the active stage, two time–frequency features, the energy ratio (ER) and the normalized residual entropy (NRE), were extracted from differential guided-wave responses, and a Mahalanobis-distance (MD)-based indicator was constructed within a healthy reference space for state discrimination. Experimental results demonstrate that the passive method achieves high-accuracy impact localization. Furthermore, while ER characterizes the energy of damage-induced scattering waves, NRE provides complementary information regarding the temporal energy redistribution of the residual signals. By synthesizing ER and NRE, the proposed MD-based indicator is shown to effectively separate healthy and local-anomaly states. Compared with conventional damage indices, the proposed method more effectively suppresses healthy-state fluctuations and improves discrimination stability.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Event-triggered passive–active guided wave monitoring for a PZT-embedded smart composite panel
- Date Crossref
- 01/09/2026
- Éditeur
- IOP Publishing
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Tongji University pays non établi dans la noticeUniversité ou école supérieure
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National University of Defense Technology Key Laboratory of Equipment State Sensing and Smart Support pays non établi dans la noticeUniversité ou école supérieure
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Hong Kong Polytechnic University Hong Kong Branch of National Rail Transit Electrification and Automation Engineering Technology Research Center pays non établi dans la noticeUniversité ou école supérieure
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School of Aerospace Engineering and Applied Mechanics pays non établi dans la noticeUniversité ou école supérieure
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College of Intelligence Science and Technology pays non établi dans la noticeUniversité ou école supérieure
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College of Civil Engineering pays non établi dans la noticeUniversité ou école supérieure
Tongji University, Key Laboratory of Equipment State Sensing and Smart Support — National University of Defense Technology et Hong Kong Branch of National Rail Transit Electrification and Automation Engineering Technology Research Center — Hong Kong Polytechnic University, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.