| Issue |
E3S Web Conf.
Volume 618, 2025
6th International Symposium on Architecture Research Frontiers and Ecological Environment (ARFEE 2024)
|
|
|---|---|---|
| Article Number | 02018 | |
| Number of page(s) | 6 | |
| Section | Analysis of Construction Engineering and Material Characteristics | |
| DOI | https://doi.org/10.1051/e3sconf/202561802018 | |
| Published online | 27 February 2025 | |
Defect Signal Identification in Concrete-Filled Steel Tubular Columns Based on Wavelet Analysis
1 China MCC20 Group Co., Ltd., Shanghai 201900, China
2 Guangdong MCC20 Construction Co., Ltd., Zhuhai 519090, Guangdong, China
3 Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK
4 School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
* Corresponding author: shao8zhiwei@163.com
Based on the principle of acoustic energy distribution at a single flat interface under vertical ultrasonic incidence, this study derives the reflection and transmission coefficients for both healthy bonding interfaces and debonded interfaces in concrete-filled steel tubular (CFST) columns. The calculation results indicate that when debonding defects occur in CFST, the signal amplitude received by the transducer on the same side increases significantly. By applying wavelet denoising and wavelet packet energy calculation methods to the experimental study of debonding damage identification at CFST interfaces, the area and extent of debonding defects can be accurately predicted.
© The Authors, published by EDP Sciences, 2025
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