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dc.contributor.authorSalje, Ekhard
dc.contributor.authorJiang, X
dc.contributor.authorEckstein, J
dc.contributor.authorWang, L
dc.date.accessioned2021-09-27T23:30:56Z
dc.date.available2021-09-27T23:30:56Z
dc.date.issued2021-10
dc.identifier.issn1454-5101
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/328588
dc.description.abstract<jats:p>As a non-destructive testing technology with fast response and high resolution, acoustic emission is widely used in material monitoring. The material deforms under stress and releases elastic waves. The wave signals are received by piezoelectric sensors and converted into electrical signals for rapid storage and analysis. Although the acoustic emission signal is not the original stress signal inside the material, the typical statistical distributions of acoustic emission energy and waiting time between signals are not affected by signal conversion. In this review, we first introduce acoustic emission technology and its main parameters. Then, the relationship between the exponents of power law distributed AE signals and material failure state is reviewed. The change of distribution exponent reflects the transition of the material’s internal failure from a random and uncorrelated state to an interrelated state, and this change can act as an early warning of material failure. The failure process of materials is often not a single mechanism, and the interaction of multiple mechanisms can be reflected in the probability density distribution of the AE energy. A large number of examples, including acoustic emission analysis of biocemented geological materials, hydroxyapatite (human teeth), sandstone creep, granite, and sugar lumps are introduced. Finally, some supplementary discussions are made on the applicability of Båth’s law.</jats:p>
dc.publisherMDPI AG
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleAcoustic emission spectroscopy: Applications in geomaterials and related materials
dc.typeArticle
prism.issueIdentifier19
prism.publicationDate2021
prism.publicationNameApplied Sciences (Switzerland)
prism.volume11
dc.identifier.doi10.17863/CAM.76037
dcterms.dateAccepted2021-09-15
rioxxterms.versionofrecord10.3390/app11198801
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2021-10-01
dc.contributor.orcidSalje, Ekhard [0000-0002-8781-6154]
dc.identifier.eissn2076-3417
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P024904/1)
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (861153)
cam.issuedOnline2021-09-22


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International