Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/347624
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampBuiochi, Elaine Belassiano-
dc.typeArtigopt_BR
dc.titleComputational method to determine reflected ultrasonic signals from arbitrary-geometry targetspt_BR
dc.contributor.authorBuiochi, Flavio-
dc.contributor.authorBuiochi, Elaine B.-
dc.contributor.authorFormigoni, Paulo-
dc.contributor.authorAdamowski, Julio-
dc.subjectTransdutores ultra-sonicospt_BR
dc.subject.otherlanguageUltrasonic transducerspt_BR
dc.description.abstractA computational method based on the impulse response and on the discrete representation computational concept is proposed for the determination of the echo responses from arbitrary-geometry targets. It is supposed that each point of the transducer aperture can be considered as a source radiating hemispherical waves to the reflector. The local interaction with each of the hemispherical waves at the reflector surface can be modeled as a plane wave impinging on a planar surface, using the respective reflection coefficient. The method is valid for all field regions and can be performed for any excitation waveform radiated from an arbitrary acoustic aperture. The effects of target geometry, position, and material on both the amplitude and the shape of the echo response are studied. The model is compared with experimental results obtained using broadband transducers together with plane and cylindrical concave rectangular reflectors (aluminum, brass, and acrylic), as well as a circular cavity placed on a plane surface, in a water medium. The method can predict the measured echoes accurately. This paper shows an improved approach of the method, considering the reflection coefficient for all incident hemispherical waves arriving at each point of the target surfacept_BR
dc.relation.ispartofIEEE Transactions on ultrasonics, ferroelectrics and frequency controlpt_BR
dc.publisher.cityPiscataway, NJpt_BR
dc.publisher.countryEstados Unidospt_BR
dc.publisherInstitute of Electrical and Electronics Engineerspt_BR
dc.date.issued2010-
dc.date.monthofcirculationApr.pt_BR
dc.language.isoengpt_BR
dc.description.volume57pt_BR
dc.description.issuenumber4pt_BR
dc.description.firstpage986pt_BR
dc.description.lastpage994pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0885-3010pt_BR
dc.identifier.eissn1525-8955pt_BR
dc.identifier.doi10.1109/TUFFC.2010.1504pt_BR
dc.identifier.urlhttps://ieeexplore.ieee.org/document/5442894pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsordocumentnumbernão tempt_BR
dc.description.sponsordocumentnumbernão tempt_BR
dc.date.available2020-08-18T21:27:17Z-
dc.date.accessioned2020-08-18T21:27:17Z-
dc.description.provenanceSubmitted by Mariana Aparecida Azevedo (mary1@unicamp.br) on 2020-08-18T21:27:17Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-01-04T15:13:33Z : No. of bitstreams: 1 000278295700024.pdf: 1255244 bytes, checksum: 57394150d8f7f0692871e91216788fbe (MD5)en
dc.description.provenanceMade available in DSpace on 2020-08-18T21:27:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2010en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/347624-
dc.contributor.departmentsem informaçãopt_BR
dc.contributor.unidadeFaculdade de Engenharia Elétrica e de Computaçãopt_BR
dc.subject.keywordAcoustic reflectionpt_BR
dc.subject.keywordAcoustic wavespt_BR
dc.subject.keywordGeometrypt_BR
dc.subject.keywordShapept_BR
dc.subject.keywordAcoustic transducerspt_BR
dc.subject.keywordAluminumpt_BR
dc.subject.keywordSurface wavespt_BR
dc.identifier.source000278295700024pt_BR
dc.creator.orcidsem informaçãopt_BR
dc.type.formArtigopt_BR
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