Composite Panel Damage Classification Based on Guided Waves and Machine Learning: An Experimental Approach

被引:19
|
作者
Perfetto, Donato [1 ]
Rezazadeh, Nima [1 ]
Aversano, Antonio [1 ]
De Luca, Alessandro [1 ]
Lamanna, Giuseppe [1 ]
机构
[1] Univ Campania L Vanvitelli, Dept Engn, Via Roma 29, I-81031 Aversa, Italy
来源
APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 18期
关键词
ultrasonic guided wave; PZT transducers; machine learning; damage detection and classification; experiments; IDENTIFICATION; LOCALIZATION;
D O I
10.3390/app131810017
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Ultrasonic guided waves (UGW) are widely used in structural health monitoring (SHM) systems due to the sensitivity of their propagation mechanisms to local material changes, i.e., those induced by damage. Post-processing of the signals gathered by piezoelectric sensors, typically used for both the excitation and the sensing of UGW, is a fundamental step to extract all the peculiar features that can be related to both damage location and severity. This research probes the efficacy of machine learning (ML) models in discerning damage location (R-Classification) and size (S-Classification). Seven supervised ML classifiers were examined: Ensemble-Subspace K-Nearest Neighbors (KNN), Ensemble-Bagged Trees, KNN-Fine, Ensemble-Boosted Trees, Support Vector Machine (SVM), Linear Discriminant, and SVM-Quadratic. The experimental dataset comprised measurements from varied reversible damage configurations on a composite panel, represented by wooden cuboids of single and three different sizes. Signal noise was minimized by performing a low-pass filter, and sequence forward selection-aided feature selection. The optimized ensemble classifier proved to be the most precise for R-Classification (95.83% accuracy), while Ensemble-Subspace KNN excelled in S-Classification (98.1% accuracy). This method offers accurate, efficient damage diagnosis and classification in composite structures, promising potential applications in aerospace, automotive, and civil engineering sectors.
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页数:24
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