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dc.contributor.authorCrawford, Alasdair R.
dc.contributor.authorDroubi, Mohamad Ghazi
dc.contributor.authorFaisal, Nadimul Haque
dc.date.accessioned2018-05-11T11:36:13Z
dc.date.available2018-05-11T11:36:13Z
dc.date.issued2018-05-04en
dc.identifier.citationCRAWFORD, A., DROUBI, M.G. and FAISAL, N.H. 2018. Analysis of acoustic emission propagation in metal-to-metal adhesively-bonded joints. Journal of nondestructive evaluation [online], 37(2), article ID 33. Available from: https://doi.org/10.1007/s10921-018-0488-yen
dc.identifier.issn0195-9298en
dc.identifier.issn1573-4862en
dc.identifier.urihttp://hdl.handle.net/10059/2915
dc.description.abstractAcoustic emission (AE) monitoring shows promise as one of the most effective methods for condition monitoring of adhesively-bonded joints. Previous research has demonstrated its ability to detect, locate and classify adhesive joint failure, though in these studies little attention appears to have been paid to the differences in AE wave propagation through the bonded and un-bonded sections of the specimens tested, or to the effects of the wave modes excited or the propagation distances. This paper details an experimental study conducted on large aluminium sheet specimens to identify the effects of the presence of an adhesive layer on AE wave propagation. Three specimens are considered; a single aluminium sheet, two aluminium sheets placed together without adhesive, and an adhesively-bonded specimen. A pencil lead break (PLB) is used as a simulated AE source, and is applied to the three specimens at varying propagation distances and orientations. The acquired signals are processed using wavelet-transforms to explore time-frequency features, and compared with modified group-velocity curves based on the Rayleigh–Lamb equations to allow identification of wave-modes and edge-reflections. The effects of propagation distance and source orientation are investigated while comparison is made between the three specimens. It is concluded that while the wave propagation modes can be approximated as being constant throughout all three specimens, there is a significant change in the received waveforms due to the attenuation of high-frequency components exhibited by the bonded specimen. These findings may be utilised to provide a deeper understanding of acquired AE data, improving the current abilities to identify, locate and characterise damage mechanisms occurring within adhesive joints, ultimately improving safety in the use of adhesive bonding for critical applications.en
dc.language.isoengen
dc.publisherSpringeren
dc.rightshttps://creativecommons.org/licenses/by/4.0en
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectAdhesive jointsen
dc.subjectAcoustic emissionen
dc.subjectWave propagationen
dc.subjectWavelet transformen
dc.subjectSignal processingen
dc.subjectPencil lead break (PLB) testen
dc.titleAnalysis of acoustic emission propagation in metal-to-metal adhesively-bonded joints.en
dc.typeJournal articlesen
dc.publisher.urihttps://doi.org/10.1007/s10921-018-0488-yen
dcterms.dateAccepted2018-04-20en
dcterms.publicationdate2018-06-30
refterms.accessExceptionNAen
refterms.dateDeposit2018-05-11en
refterms.dateFCA2018-05-04en
refterms.dateFCD2018-05-11en
refterms.dateFreeToDownload2018-05-04en
refterms.dateFreeToRead2018-05-04en
refterms.dateToSearch2018-05-04en
refterms.depositExceptionpublishedGoldOAen
refterms.panelBen
refterms.technicalExceptionNAen
refterms.versionVoRen
rioxxterms.publicationdate2018-05-04en
rioxxterms.typeJournal Article/Reviewen
rioxxterms.versionVoRen


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