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- W2076384613 abstract "The interface between steel bar and concrete plays an important role in retaining the strength of reinforced concrete structures. When the interface is damaged by cracking, de-bonding between the two materials and/or other kinds of damage, significant degradation of the structural performances will occur owing to loss of composite actions. In this study, wave propagation on several steel bars embedded in two concrete plates with different de-bonding scenarios is tested. Piezoelectric actuators and sensors are attached to steel bars for recording input and response signals. This paper uses the wavelet transform combined with the wavelet packet decomposition, component energy and Shannon entropy to analyse the experimental results. The results demonstrate that both damage index and relative entropy are sensitive to the existence of de-bonding damage and change linearly with de-bonding length when there is only a single de-bonding damage, while energy and entropy distribution are largely influenced by the property of the excitation signal. When multiple de-bonding exists, however, both the damage index and relative entropy have no such clear tendency." @default.
- W2076384613 created "2016-06-24" @default.
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- W2076384613 date "2013-01-01" @default.
- W2076384613 modified "2023-09-30" @default.
- W2076384613 title "Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study" @default.
- W2076384613 doi "https://doi.org/10.7158/s12-039.2013.14.1" @default.
- W2076384613 hasPublicationYear "2013" @default.
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