Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/118287
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dc.contributor.authorMohseni, H.en
dc.contributor.authorNg, C.en
dc.date.issued2019en
dc.identifier.citationStructural Health Monitoring, 2019; 18(1):303-317en
dc.identifier.issn1475-9217en
dc.identifier.issn1741-3168en
dc.identifier.urihttp://hdl.handle.net/2440/118287-
dc.description.abstractStructural health monitoring is of paramount importance to ensure safety and serviceability of structures. Among different damage detection techniques, guided wave–based approach has been the subject of intensive research activities. This article investigates the capability of Rayleigh wave for debonding detection in fibre-reinforced polymer-retrofitted concrete structures through studying wave scattering phenomenon at debonding between fibre-reinforced polymer and concrete. A three-dimensional finite element model is presented to simulate Rayleigh wave propagation and scattering at the debonding. Numerical simulations of Rayleigh wave propagation are validated with analytical solutions. Absorbing layers by increasing damping is employed in the fibre-reinforced polymer-retrofitted concrete numerical model to maximise computational efficiency in the scattering study. Experimental measurements are also carried out using a three-dimensional laser Doppler vibrometer to validate the three-dimensional finite element model. Very good agreement is observed between the numerical and experimental results. The experimentally and analytically validated finite element model is then used in numerical case studies to investigate the wave scattering characteristic at the debonding. The study investigates the directivity patterns of scattered Rayleigh waves, in both backward and forward directions, with respect to different debonding size-to-wavelength ratios. This study also investigates the suitability of using bonded mass to simulate debonding in the fibre-reinforced polymer-retrofitted concrete structures. By enhancing physical understanding of Rayleigh wave scattering at the debonding between fibre-reinforced polymer/concrete interfaces, this study can lead to further advance of Rayleigh wave–based damage detection techniques.en
dc.description.statementofresponsibilityHasan Mohseni, Ching-Tai Ngen
dc.language.isoenen
dc.publisherSAGEen
dc.rights©The Author(s) 2018en
dc.subjectRayleigh wave; fibre-reinforced polymer-retrofitted concrete; debonding; scattering; guided wave; finite element; experiment; three-dimensional scanning laser vibrometeren
dc.titleRayleigh wave propagation and scattering characteristics at debondings in fibre-reinforced polymer-retrofitted concrete structuresen
dc.typeJournal articleen
dc.identifier.rmid0030083220en
dc.identifier.doi10.1177/1475921718754371en
dc.relation.granthttp://purl.org/au-research/grants/arc/DE130100261en
dc.identifier.pubid398368-
pubs.library.collectionCivil and Environmental Engineering publicationsen
pubs.library.teamDS10en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
Appears in Collections:Civil and Environmental Engineering publications

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