A Relationship between Frequency Dependent Ultrasonic Attenuation and Porosity in Composite Laminates

dc.contributor.author Hughes, M.
dc.contributor.author Handley, S.
dc.contributor.author Miller, J.
dc.contributor.author Madaras, E.
dc.date 2018-02-14T04:06:44.000
dc.date.accessioned 2020-06-30T06:33:14Z
dc.date.available 2020-06-30T06:33:14Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 1988
dc.date.issued 1988
dc.description.abstract <p>The detrimental effects of porosity on material strength are well known. The work of Hsu, Rose, and Adler[l] provides a means of estimating the volume fraction of pores and the average pore radius in isotropic elastic media from the value of frequency at which the attenuation coefficient becomes frequency independent and the magnitude of the attenuation coefficient at that plateau. Quantitative results for the isotropic case depend on numerical factors obtained by Gubernatis et al. [2] which are functions of the ratio of the transverse to longitudinal sound velocities, i.e., on the Poisson ratio. Mobley et al. [3] have tested these theories by making measurments of attenuation covering a frequency range that extended well into the frequency independent plateau. The experimental results of these investigators suggest that the theoretical results obtained by Rose et al. are qualitatively correct even though some of the features of wave propagation in layered, anisotropic media are not explicitly incorporated into the scattering model.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/qnde/1988/allcontent/19/
dc.identifier.articleid 1630
dc.identifier.contextkey 5783421
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1988/allcontent/19
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/59097
dc.language.iso en
dc.relation.ispartofseries Review of Progress in Quantitative Nondestructive Evaluation
dc.source.bitstream archive/lib.dr.iastate.edu/qnde/1988/allcontent/19/1988_Hughes_RelationshipFrequency.pdf|||Fri Jan 14 21:48:58 UTC 2022
dc.source.uri 10.1007/978-1-4613-0979-6_19
dc.subject.disciplines Acoustics, Dynamics, and Controls
dc.subject.disciplines Structures and Materials
dc.title A Relationship between Frequency Dependent Ultrasonic Attenuation and Porosity in Composite Laminates
dc.type event
dc.type.genre article
dspace.entity.type Publication
relation.isSeriesOfPublication 289a28b5-887e-4ddb-8c51-a88d07ebc3f3
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