Airborne non-contact and contact broadband ultrasounds for frequency attenuation profile estimation of cementitious materials

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dc.check.date2020-03-28
dc.check.infoAccess to this article is restricted until 24 months after publication by request of the publisher.en
dc.contributor.authorGosálbez, J.
dc.contributor.authorWright, William M. D.
dc.contributor.authorJiang, W.
dc.contributor.authorCarrión, A.
dc.contributor.authorGenovés, V.
dc.contributor.authorBosch, I.
dc.contributor.funderUniversity College Corken
dc.contributor.funderMinisterio de Educación, Cultura y Deporteen
dc.contributor.funderUniversitat Politècnica de Valènciaen
dc.contributor.funderGeneral State Administration of Spain
dc.date.accessioned2018-04-05T10:52:53Z
dc.date.available2018-04-05T10:52:53Z
dc.date.issued2018-03-28
dc.date.updated2018-04-03T11:45:54Z
dc.description.abstractIn this paper, the study of frequency-dependent ultrasonic attenuation in strongly heterogeneous cementitious materials is addressed. To accurately determine the attenuation over a wide frequency range, it is necessary to have suitable excitation techniques. We have analysed two kinds of ultrasound techniques: contact ultrasound and airborne non-contact ultrasound. The mathematical formulation for frequency-dependent attenuation has been established and it has been revealed that each technique may achieve similar results but requires specific different calibration processes. In particular, the airborne non-contact technique suffers high attenuation due to energy losses at the air-material interfaces. Thus, its bandwidth is limited to low frequencies but it does not require physical contact between transducer and specimen. In contrast, the classical contact technique can manage higher frequencies but the measurement depends on the pressure between the transducer and the specimen. Cement specimens have been tested with both techniques and frequency attenuation dependence has been estimated. Similar results were achieved at overlapping bandwidth and it has been demonstrated that the airborne non-contact ultrasound technique could be a viable alternative to the classical contact technique.en
dc.description.sponsorshipMinisterio de Educación, Cultura y Deporte (Salvador Madariaga’s Programme PR2016-00344 / PR2017-00658); General State Administration of Spain (grant BIA2014-55311-C2-2-P)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGosálbez, J., Wright, W. M. D., Jiang, W., Carrión, A., Genovés, V. and Bosch, I. (2018) ‘Airborne non-contact and contact broadband ultrasounds for frequency attenuation profile estimation of cementitious materials’, Ultrasonics. doi:10.1016/j.ultras.2018.03.011en
dc.identifier.doi10.1016/j.ultras.2018.03.011
dc.identifier.issn0041-624X
dc.identifier.issn1874-9968
dc.identifier.journaltitleUltrasonicsen
dc.identifier.urihttps://hdl.handle.net/10468/5740
dc.language.isoenen
dc.publisherElsevier B.V.en
dc.rights© 2018, Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectAirborne ultrasounden
dc.subjectAttenuationen
dc.subjectBroadband signalen
dc.subjectUltrasounden
dc.subjectConcreteen
dc.subjectNon-contact ultrasounden
dc.titleAirborne non-contact and contact broadband ultrasounds for frequency attenuation profile estimation of cementitious materialsen
dc.typeArticle (peer-reviewed)en
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