Locating delaminations in laminated composite beams using nonlinear guided waves

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• 作者：Reza Soleimanpour ; Ching-Tai Ng ; ^{alex.ng@adelaide.edu.au}
• 关键词：Nonlinear guided wave ; Contact acoustic nonlinearity ; Higher harmonic ; Delamination ; Laminated composite beam ; Baseline-free method ; Transducer network
• 刊名：Engineering Structures
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：131
• 期：Complete
• 页码：207-219
• 全文大小：2626 K
• 卷排序：131

文摘

Detect and locate delamination in laminated composite beams using nonlinear guided. Use of generation of higher harmonic guided wave due to clapping to detect and locate delamination. A baseline-free delamination localization technique using a network of transducers is proposed. Continuous Gabor wavelet transform is used to accurately determine the arrive time of higher harmonic guided wave. Comprehensive numerical and experimental case studies are provided.