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dc.contributor.authorMillán Blasco, Oliver
dc.contributor.authorSalazar Soler, Jorge
dc.contributor.authorChávez Domínguez, Juan Antonio
dc.contributor.authorTuró Peroy, Antonio
dc.contributor.authorGarcía Hernández, Miguel J.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.identifier.citationMillan, O., Salazar, J., Chavez-Dominguez, J. A., Turo, A., Garcia, M. Characterization of nonhomogeneity in the dispersive properties of the materials used in pipes. A: IEEE International Ultrasonics Symposium. "IUS: 2017 IEEE Ultrasonics Symposium. Conference: Septembre 6-9, 2017:Washington,EEUU: proceeding papers". Whashington D.C: Institute of Electrical and Electronics Engineers (IEEE), 2017.
dc.description.abstractThis article is focused on the characterization of the lack of homogeneity in the dispersive acoustic properties of polymeric materials used in industrial pipes. Usually, the parameter of interest associated to dispersion is the variation in the propagation velocity as a function of the frequency or the temperature. Nevertheless, this paper, studies the variation in the propagation velocity, as a function of the intensity of the acoustic signal. In these cases, pipes made of PVC, PP and PVDF, which are commonly used in industrial installations, have been characterized. For each type of pipe, high and low acoustic intensity signals have been applied in order to reproduce working conditions that typically appear in the pipe wall below the transducers in commercial Clamp-on ultrasonic flowmeters (UFMs). Under these conditions, acoustic velocity maps have been created for the three materials under test. These maps reveal two effects that are not usually taken into account. The first one is the variation of the propagation velocity with the power density of the ultrasonic signal and the second one is the nonhomogeneous behaviour along the pipe surface. Finally, the acoustic maps reflect how a stronger acoustic signal produces greater behaviour differences in the materials under test. The characterized phenomenon of lack of homogeneity in dispersive acoustic properties, produces a variation in the zero flow error in Clamp-on UFM caused, so as not to fulfil the reciprocity criterion.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshInhomogeneous materials
dc.subject.lcshMaterials--Mechanical properties
dc.subject.otherdispersive materials
dc.subject.otherinhomogeneous behaviour
dc.subject.otherClamp-on ultrasonic flowmeters
dc.subject.otheracoustic maps
dc.titleCharacterization of nonhomogeneity in the dispersive properties of the materials used in pipes
dc.typeConference report
dc.subject.lemacMaterials -- Propietats mecàniques
dc.contributor.groupUniversitat Politècnica de Catalunya. GSS - Grup Sistemes Sensors
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorMillan, O.; Salazar, J.; Chavez-Dominguez, J. A.; Turo, A.; Garcia, M.
local.citation.contributorIEEE International Ultrasonics Symposium
local.citation.pubplaceWhashington D.C
local.citation.publicationNameIUS: 2017 IEEE Ultrasonics Symposium. Conference: Septembre 6-9, 2017:Washington,EEUU: proceeding papers

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