Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study
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...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Institution of Engineers, Australia
2013
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| Subjects: | |
| Online Access: | http://search.informit.com.au/documentSummary;dn=221269089706001;res=IELENG http://hdl.handle.net/20.500.11937/36311 |
| _version_ | 1848754733684097024 |
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| author | Ou, G. Ying, W. Hao, Hong Zhu, X. |
| author_facet | Ou, G. Ying, W. Hao, Hong Zhu, X. |
| author_sort | Ou, G. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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 analyze 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. |
| first_indexed | 2025-11-14T08:45:06Z |
| format | Journal Article |
| id | curtin-20.500.11937-36311 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:45:06Z |
| publishDate | 2013 |
| publisher | Institution of Engineers, Australia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-363112017-01-30T13:54:59Z Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study Ou, G. Ying, W. Hao, Hong Zhu, X. De-bonding Wavelet entropy Damage detection Wavelet packet decomposition 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 analyze 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. 2013 Journal Article http://hdl.handle.net/20.500.11937/36311 http://search.informit.com.au/documentSummary;dn=221269089706001;res=IELENG Institution of Engineers, Australia restricted |
| spellingShingle | De-bonding Wavelet entropy Damage detection Wavelet packet decomposition Ou, G. Ying, W. Hao, Hong Zhu, X. Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study |
| title | Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study |
| title_full | Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study |
| title_fullStr | Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study |
| title_full_unstemmed | Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study |
| title_short | Identification of de-bonding between steel bars and concrete using wavelet techniques: Comparative study |
| title_sort | identification of de-bonding between steel bars and concrete using wavelet techniques: comparative study |
| topic | De-bonding Wavelet entropy Damage detection Wavelet packet decomposition |
| url | http://search.informit.com.au/documentSummary;dn=221269089706001;res=IELENG http://hdl.handle.net/20.500.11937/36311 |