Guided waves for damage detection in rebar-reinforced concrete beams

Lu, Y; Li, J; Ye, L; Wang, D

Guided waves for damage detection in rebar-reinforced concrete beams

Lu, Y Li, J

Ye, L Wang, D

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Publication Type:: Journal Article
Citation:: Construction and Building Materials, 2013, 47 pp. 370 - 378
Issue Date:: 2013-06-21

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Field	Value	Language
dc.contributor.author	Lu, Y	en_US
dc.contributor.author	Li, J https://orcid.org/0000-0002-2526-3048	en_US
dc.contributor.author	Ye, L	en_US
dc.contributor.author	Wang, D	en_US
dc.date.issued	2013-06-21	en_US
dc.identifier.citation	Construction and Building Materials, 2013, 47 pp. 370 - 378	en_US
dc.identifier.issn	0950-0618	en_US
dc.identifier.uri	http://hdl.handle.net/10453/23756
dc.description.abstract	The propagation properties of ultrasonic waves in rebar-reinforced concrete beams were investigated for the purpose of damage detection. Two types of piezoelectric (PZT) elements were used in experiments in which PZT disks were attached on the surfaces of concrete beams to observe wave propagation in concrete before and after a four-point bending test, while rectangular PZT patches were attached at the exposed ends of the rebar to monitor wave transmission along the rebar with and without simulated corrosion in the form of partial material removal from the rebar. Experimental testing demonstrated that the surface-attached PZT disks were capable of detecting the change in material properties due to the existence of cracking. In consideration of the inevitable discrepancies in different concrete beams due to specimen preparation and sensor installation, principal component analysis based on statistical parameters extracted from wave signals was applied to highlight the difference between benchmark and damaged rebar. The results show the potential of the principal components as damage indices for quantifying integrity conditions of concrete structures. © 2013 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Construction and Building Materials	en_US
dc.relation.isbasedon	10.1016/j.conbuildmat.2013.05.016	en_US
dc.subject.classification	Building & Construction	en_US
dc.title	Guided waves for damage detection in rebar-reinforced concrete beams	en_US
dc.type	Journal Article
utslib.citation.volume	47	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	1202 Building	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	47	en_US

Abstract:

The propagation properties of ultrasonic waves in rebar-reinforced concrete beams were investigated for the purpose of damage detection. Two types of piezoelectric (PZT) elements were used in experiments in which PZT disks were attached on the surfaces of concrete beams to observe wave propagation in concrete before and after a four-point bending test, while rectangular PZT patches were attached at the exposed ends of the rebar to monitor wave transmission along the rebar with and without simulated corrosion in the form of partial material removal from the rebar. Experimental testing demonstrated that the surface-attached PZT disks were capable of detecting the change in material properties due to the existence of cracking. In consideration of the inevitable discrepancies in different concrete beams due to specimen preparation and sensor installation, principal component analysis based on statistical parameters extracted from wave signals was applied to highlight the difference between benchmark and damaged rebar. The results show the potential of the principal components as damage indices for quantifying integrity conditions of concrete structures. © 2013 Elsevier Ltd. All rights reserved.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/23756