Bonding performance monitoring between CFRP and timber column interfaces based on piezoelectric ceramics
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Published:2023-01-03
Issue:2
Volume:32
Page:024002
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ISSN:0964-1726
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Container-title:Smart Materials and Structures
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language:
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Short-container-title:Smart Mater. Struct.
Author:
Yang WenweiORCID,
Lv BowenORCID,
Meng Huien,
Yang Xia
Abstract
Abstract
To address the problem that carbon fibre reinforced polymer (CFRP) composite material is not easy to directly measure the bond strength of the CFRP-timber column interface during the process of strengthening timber column, a real-time monitoring method of CFRP-timber interface bond strength based on piezoelectric ceramic active sensing is proposed to determine the interface bond strength directly from the structural response signal. A total of 15 specimens were designed for the active monitoring test and tensile test, and the monitoring signals at different enhancement times were compared and analysed using wavelet packets, power spectral density, and short-time Fourier transform, and it was found that the amplitude and power spectral density of the signals increased as the reinforcement time increased. The mapping relationship between wavelet packet energy and bond strength is obtained, providing a more efficient and robust way of monitoring the bond strength between CFRP and timber columns during reinforcement.
Funder
National Natural Science Foundation of China
Ningxia Natural Science Fund Project
First-Class Discipline Construction Project of Ningxia University
Subject
Electrical and Electronic Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics,Civil and Structural Engineering,Signal Processing
Cited by
1 articles.
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