Guided wave propagation across sharp lateral heterogeneities: the complete wavefield at a cylindrical inclusion

Stoneley Wave Propagation across Borehole Permeability Heterogeneities

An important application of borehole acoustic logging is the determination of formation permeability using Stoneley waves. Heterogeneous permeable structures, such as fractures, sand-shale sequences, etc., are commonly encountered in acoustic logging. The purpose of this study is to investigate the effects of the permeability heterogeneities on the borehole Stoneley wave propagation, We have st...

Wave Propagation in Cylindrical Poroelastic Dry Bones

The wave propagation modeling in cylindrical human long dry bones with cavity is studied. The dynamic behavior of a dry long bones that has been modeled as a piezoelectric hollow cylinder of crystal class 6 is investigated. An analytic solutions for this mechanical wave propagation in a long dry bones have been obtained for the flexural vibrations. The frequency equation for poroelastic bones i...

Guided Wave Propagation in Cylindrical Domains With Non-Orthogonal Sets of Normal Modes

Wave Propagation Across Muddy Seafloors

The primary objective was to develop field-verified models for the evolution of surfacegravity waves propagating over a muddy seafloor, allowing more skillful predictions of wave fields on continental shelves, and enabling the estimation of characteristics of the seafloor from wave observations. The approach was to investigate empirical and theoretical expressions for mud-induced damping by com...

Wave Propagation through Fluid Contained in a Cylindrical, Elastic Shell*

satisfies it. This indicates that in the limit, as the wall thickness of the hollow tube approaches zero, the only possible mode of torsional wave propagation is the zeroth mode, as would be expected. For completeness, Fig. 1 shows the values of the characteristic numbers k'a plotted agsinst the ratio of the tube inner radii to tube outer radii for the cases calculated. This shows that torsiona...