@inproceedings{b1ff63877e334b11828d39ac5d16cf02,
title = "Structural vibration-based damage classification of delaminated smart composite laminates",
abstract = "Separation along the interfaces of layers (delamination) is a principal mode of failure in laminated composites and its detection is of prime importance for structural integrity of composite materials. In this work, structural vibration response is employed to detect and classify delaminations in piezo-bonded laminated composites. Improved layerwise theory and finite element method are adopted to develop the electromechanically coupled governing equation of a smart composite laminate with and without delaminations. Transient responses of the healthy and damaged structures are obtained through a surface bonded piezoelectric sensor by solving the governing equation in the time domain. Wavelet packet transform (WPT) and linear discriminant analysis (LDA) are employed to extract discriminative features from the structural vibration response of the healthy and delaminated structures. Dendrogram-based support vector machine (DSVM) is used to classify the discriminative features. The confusion matrix of the classification algorithm provided physically consistent results.",
keywords = "classification, Delamination, piezobonded laminated composite, structural vibration, wavelet packet transform",
author = "Asif Khan and Kim, {Heung Soo} and Sohn, {Jung Woo}",
note = "Publisher Copyright: {\textcopyright} 2018 SPIE.; Active and Passive Smart Structures and Integrated Systems XII 2018 ; Conference date: 05-03-2018 Through 08-03-2018",
year = "2018",
doi = "10.1117/12.2292011",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jae-Hung Han and Alper Erturk",
booktitle = "Active and Passive Smart Structures and Integrated Systems XII",
address = "United States",
}