Numerical study on the mechanism of active interfacial debonding detection for rectangular CFSTs based on wavelet packet analysis with piezoceramics
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- 作者：Bin Xua ; b ; binxu@hnu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Hongbing Chenc ; Song Xiad
- 关键词：Piezoceramics ; Concrete-filled steel tube ; Debonding damage ; Damage identification ; Numerical simulation ; Stress wave propagation ; Wavelet packet analysis
- 刊名：Mechanical Systems and Signal Processing
- 出版年：2017
- 出版时间：1 March 2017
- 年：2017
- 卷：86
- 期：part_PA
- 页码：108-121
- 全文大小：2444 K
文摘
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A multi-physics coupling finite element model (FEM) is constructed to simulate the stress wave propagation within CFST members with interface debonding.
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The stress wave fields of CFST without and with interface debonding defects are compared.
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The index based on the wavelet packet analysis is sensitive to the interfacial debonding defect.
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The results indicate that the interfacial defect leads to the changes in the propagation path, travel time and magnitude of stress waves.