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- W2334146588 abstract "Anisotropic cracked media have been widely investigated in many theoretical and experimental studies. In this work, we perform ultrasonic surveys to investigate the influence of source frequency on elastic parameters (the Thomsen parameter and shear-wave attenuation) of fractured anisotropic media. Under controlled conditions, we prepared anisotropic models containing penny-shaped rubber inclusions in a solid epoxy resin matrix with crack density that ranges from 0 to 6.2 %. Two of the three models have 10 layers and the last has 17 layers, the number of uniform rubber inclusions per layer was from 0 up to 100. S-wave splitting measurements have shown that scattering effects are more prominent in models where the crack aperture to seismic wavelength ratio ranges from 1.3 to 13.3 than other models where the ratio was varied from 2.3 to 23. The model with large cracks gave a magnitude of attenuation 3 times higher compared with another model that had small inclusions. These results indicate acoustic scattering, attenuation (intrinsic and apparent), and velocity dispersion directly interfere in shear wave splitting, which in turn is a function of crack aperture and source frequency." @default.
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- W2334146588 date "2011-03-13" @default.
- W2334146588 modified "2023-09-26" @default.
- W2334146588 title "Frequency dependence of elastic and attenuation properties of cracked media: Ultrasonic modeling studied" @default.
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- W2334146588 doi "https://doi.org/10.1190/sbgf2011-010" @default.
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