Characterization and application of PZT/PU and graphite doped PZT/PU composite

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dc.contributor.authorSakamoto, W. K.
dc.contributor.authorMarin-French, P.
dc.contributor.authorDas-Gupta, D. K.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Wales
dc.date.accessioned2014-05-20T15:21:28Z
dc.date.available2014-05-20T15:21:28Z
dc.date.issued2002-09-01
dc.description.abstractComposites, made of lead zirconate titanate (PZT) ceramic powder and castor oil-based polyurethane (PU), were prepared in the film form. The films were obtained in the thickness range 100-300 mum using up to 50/50 vol.% of ceramic. Another composite (PZT/C/PU) was obtained by adding a small amount (1.0 vol.%) of graphite (C) to the PZT/PU composite. By increasing the conductivity of PU-containing graphite, polarization of PZT could be carried out with better efficiency. A comparison of piezo- and pyroelectric activities and spatial distribution of polarization between graphite doped and undoped composites reveal the advantages of using semiconductor filler. These composites were used as sensors to detect acoustic emission (AE). The detection was made using two simulated sources of AE, i.e., ball bearing drop and pencil lead break. PZT/C/PU composite was able to detect both flexural and extensional components of wave vibration. (C) 2002 Elsevier B.V. B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUniv Wales, Sch Informat, Bangor LL57 1UT, Gwynedd, Wales
dc.description.affiliationUnespUniv Estadual Paulista, BR-15385000 Ilha Solteira, SP, Brazil
dc.format.extent165-174
dc.identifierhttp://dx.doi.org/10.1016/S0924-4247(02)00042-0
dc.identifier.citationSensors and Actuators A-physical. Lausanne: Elsevier B.V. Sa, v. 100, n. 2-3, p. 165-174, 2002.
dc.identifier.doi10.1016/S0924-4247(02)00042-0
dc.identifier.issn0924-4247
dc.identifier.lattes0896348165708140
dc.identifier.urihttp://hdl.handle.net/11449/32596
dc.identifier.wosWOS:000177934300005
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofSensors and Actuators A-physical
dc.relation.ispartofjcr2.311
dc.relation.ispartofsjr0,699
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectpiezoelectric compositept
dc.subjectacoustic emission sensorspt
dc.subjectpolarization distributionpt
dc.subjectdielectric spectroscopypt
dc.subjectthermally stimulated currentpt
dc.titleCharacterization and application of PZT/PU and graphite doped PZT/PU compositeen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes0896348165708140
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentFísica e Química - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia