Scattering of Ultrasound (Including Rayleigh Waves) by Surface Roughness and by Single Surface Flaws. A Review of the Work Done at Paris 7 University

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dc.contributor.author Quentin, G
dc.contributor.author de Billy, M
dc.contributor.author Jungman, A
dc.contributor.author Tittmann, Bernard
dc.date 2018-02-16T14:35:08.000
dc.date.accessioned 2020-06-30T06:27:06Z
dc.date.available 2020-06-30T06:27:06Z
dc.date.issued 1979
dc.description.abstract <p>Since some years our team has worked on the characterization of rough surfaces from a study of the angular and frequency dependence of the backscattered intensity of ultrasonic waves. We shall discuss, in view of our experimental results, the different components of the signature of the surface profile which can be evaluated by these means: <ul> <li>r.m.s. roughness h with a precision of the order of 1 μm in the range 6-100 μm</li> <li>influence of the autocorrelation distance L</li> <li>when present, surface periodicities with a precision which can be better than 1%.</li> </ul></p> <p>In the case of quasiperiodic surfaces, we shall present a comparison between the spectra theoretically predicted in the low-frequency approximation for various samples, and the ultrasonic spectra actually observed. Since 1977, we have also used Rayleigh waves to study surface properties and surface cracks in ceramics and metals and we shall give an introduction to the results obtained at the present time. This topic will be developed by B.R. Tittmann in a following paper.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/qnde/1978/allpapers/2/
dc.identifier.articleid 4602
dc.identifier.contextkey 7232871
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1978/allpapers/2
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/58246
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/qnde/1978/allpapers/2/1978_YellowJacket_082_Quentin_ScatteringUltrasound.pdf|||Fri Jan 14 22:04:48 UTC 2022
dc.subject.disciplines Engineering Mechanics
dc.subject.disciplines Mechanics of Materials
dc.title Scattering of Ultrasound (Including Rayleigh Waves) by Surface Roughness and by Single Surface Flaws. A Review of the Work Done at Paris 7 University
dc.type event
dc.type.genre event
dspace.entity.type Publication
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