Universal scaling of transverse wave attenuation in polycrystals
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DOI: 10.1016/j.ultras.2018.03.005
Abstract: HIGHLIGHTSTransverse wave attenuation in polycrystals with triclinic ellipsoidal grains.Single factor is solely encompasses dependence on the crystallite elastic moduli.Scaling with this elastic factor results in the universal (master) attenuation curve.Agreement between experiment for different materials… read more here.
Keywords: wave attenuation; attenuation coefficient; attenuation; transverse wave ... See more keywords
Enhanced ultrasonic detection of near-surface flaws using transverse-wave backscatter.
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DOI: 10.1016/j.ultras.2019.05.010
Abstract: Diffuse ultrasonic backscatter measurements have been shown to enhance the detection capability of sub-wavelength flaws when combined with extreme value statistics. However, for a normal-incidence immersion measurement, a "dead zone" created by the ring-down of… read more here.
Keywords: near surface; wave backscatter; surface flaws; transverse wave ... See more keywords
Effect of grain boundaries on mechanical transverse wave propagations in graphene
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DOI: 10.1063/1.4984763
Abstract: The effects of grain boundary (GB) on the mechanical transverse wave propagation in graphene are studied via molecular dynamics simulations and frequency spectrum analysis. We reveal that GB can attenuate transverse waves at terahertz frequencies… read more here.
Keywords: boundaries mechanical; transverse; transverse wave; effect grain ... See more keywords