Show simple item record

dc.contributor.authorAdamowski, Julio C.
dc.contributor.authorBuiochi, Flávio
dc.contributor.authorHiguti, Ricardo T. [UNESP]
dc.date.accessioned2014-05-27T11:24:35Z
dc.date.available2014-05-27T11:24:35Z
dc.date.issued2010-01-01
dc.identifierhttp://dx.doi.org/10.1016/j.phpro.2010.01.076
dc.identifier.citationPhysics Procedia, v. 3, n. 1, p. 593-603, 2010.
dc.identifier.issn1875-3884
dc.identifier.issn1875-3892
dc.identifier.urihttp://hdl.handle.net/11449/71505
dc.description.abstractThis work describes the use of a large aperture PVDF receiver in the measurement of density of liquids and elastic constants of composite materials. The density measurement of several liquids is obtained with the accuracy of less than 0.2% using a conventional NDT emitter transducer and a 70-mm diameter, 52-μm P(VDF-TrFE) membrane with gold electrodes. The determination of the elastic constants of composite materials is based in the measurement of phase velocity. It is shown that the diffraction can lead to errors around 1% in the velocity measurement when using a pair of ultrasonic transducers (1MHz and 19mm diameter) operating in transmission-reception mode separated by a distance of 100 mm. This effect is negligible when using a pair of 10-MHz transducers. On the other hand, the dispersion at 10 MHz can result in errors of about 0.5%, measuring the velocity in composite materials. The use of an 80-mm diameter, 52-μm thick PVDF membrane receiver allows measuring the phase velocity without the diffraction effects.en
dc.format.extent593-603
dc.language.isoeng
dc.relation.ispartofPhysics Procedia
dc.sourceScopus
dc.subjectDensity
dc.subjectDiffraction-free receiver
dc.subjectElastic constant
dc.subjectMaterial characterization
dc.subjectPVDF
dc.subjectDensity Measurements
dc.subjectDiffraction effects
dc.subjectGold electrodes
dc.subjectLarge aperture
dc.subjectMaterial characterizations
dc.subjectPVDF membrane
dc.subjectReception modes
dc.subjectComposite materials
dc.subjectComposite micromechanics
dc.subjectElastic constants
dc.subjectIntensive care units
dc.subjectMeasurement errors
dc.subjectPhase velocity
dc.subjectTransducers
dc.subjectUltrasonic transducers
dc.subjectUltrasonics
dc.subjectVelocity
dc.subjectVelocity measurement
dc.subjectDensity of liquids
dc.titleUltrasonic material characterization using diffraction-free PVDF receiversen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationEscola Politécnica da Universidade de São Paulo, Av. Prof. Mello Moraes, 2231, 05.508-030, São Paulo, SP
dc.description.affiliationUNESP - Universidade Estadual Paulista Dep. Eng. Elétrica, Av. Brasil, 56, 15385-000, Ilha Solteira, SP
dc.description.affiliationUnespUNESP - Universidade Estadual Paulista Dep. Eng. Elétrica, Av. Brasil, 56, 15385-000, Ilha Solteira, SP
dc.identifier.doi10.1016/j.phpro.2010.01.076
dc.rights.accessRightsAcesso aberto
dc.identifier.scopus2-s2.0-77951529588
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteirapt
dc.identifier.file2-s2.0-77951529588.pdf
dc.relation.ispartofsjr0,351
Localize o texto completo

Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record