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Ultrasonic material characterization using large-aperture PVDF receivers

dc.contributor.authorAdamowski, J. C.
dc.contributor.authorBuiochi, F.
dc.contributor.authorHiguti, R. T. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T13:29:13Z
dc.date.available2014-05-20T13:29:13Z
dc.date.issued2010-02-01
dc.description.abstractThis work describes the use of a large-aperture PVDF receiver in the measurement of liquid density and composite material elastic constants. The density measurement of several liquids is obtained with accuracy of 0.2% using a conventional NDE emitter transducer and a 70-mm-diameter, 52-mu m P(VDF-TrFE) membrane with gold electrodes. The determination of the elastic constants is based on the phase velocity measurement. Diffraction can lead to errors around 1% in velocity measurement when using alternatively the conventional pair of ultrasonic transducers (1-MHz frequency and 19-mm-diameter) operating in through-transmission mode, separated by a distance of 100 mm. This effect is negligible when using a pair of 10-MHz, 19-mm-diameter transducers. Nevertheless, the dispersion at 10 MHz can result in errors of about 0.5%, when measuring the velocity in composite materials. The use of an 80-mm diameter, 52-mu m-thick PVDF membrane receiver practically eliminates the diffraction effects in phase velocity measurement. The elastic constants of a carbon fiber reinforced polymer were determined and compared with the values obtained by a tensile test. (C) 2009 Elsevier B. V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, Dep Elect Eng, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUniv São Paulo, Escola Politecn, BR-05508900 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dep Elect Eng, BR-15385000 Ilha Solteira, SP, Brazil
dc.format.extent110-115
dc.identifierhttp://dx.doi.org/10.1016/j.ultras.2009.09.018
dc.identifier.citationUltrasonics. Amsterdam: Elsevier B.V., v. 50, n. 2, p. 110-115, 2010.
dc.identifier.doi10.1016/j.ultras.2009.09.018
dc.identifier.issn0041-624X
dc.identifier.lattes6405339510883203
dc.identifier.orcid0000-0003-4201-5617
dc.identifier.urihttp://hdl.handle.net/11449/9837
dc.identifier.wosWOS:000271779500004
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofUltrasonics
dc.relation.ispartofjcr2.377
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDensityen
dc.subjectElastic constantsen
dc.subjectLarge-aperture receiveren
dc.subjectPVDFen
dc.subjectMaterial characterizationen
dc.titleUltrasonic material characterization using large-aperture PVDF receiversen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.lattes6405339510883203[3]
unesp.author.orcid0000-0003-4201-5617[3]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentEngenharia Elétrica - FEISpt

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