Dispersion of guided waves in stratified medium with a sandy layerстатья
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Дата последнего поиска статьи во внешних источниках: 9 октября 2021 г.
Аннотация:Dispersion analysis of acoustic guided waves propagating in a stratified medium containing internal sandy layer in a contact with isotropic elastic substrate and upper elastic isotropic layer is developed by applying the modified Cauchy formalism coupled with the exponential fundamental matrices and the Thomson – Haskell transfer matrix method. The developed approach is suitable for analyzing dispersion properties of guided waves at the broad variation of the sandy parameter. Several phenomena concerning anomalous dispersion of guided waves at varying sandy parameter are observed, revealing a possibility of the non-destructive evaluation of sandy layers within the upper crust.