The propagation of scalar harmonic waves through a randomly stratified slab is investigated. The purpose of the considerations is to compare the scattering properties of the medium for various models of the composite material. As the fundamental model, a slab divided into layers by a Poisson point...
stratified mediumlong insulated antennasantenna theory/ B5270 AntennasWe consider propagation along a thin dielectric coated wire that is parallel to the interface between two homogeneous half-spaces. The solution obtained correctly accounts for the presence of the interface provided the coating radius is...
- 《Phys Rev A Gen Phys》 被引量: 89发表: 1989年 Transient electromagnetic wave propagation in anisotropic dispersive media Transient electromagnetic wave propagation in a stratified, anisotropic, dispersive medium is considered. Specifically, the direct scattering problem is ad... J Friden,G Kristen...
wavepropagation,itcanbeappliedtoanytransientwavepropagationprobleminstratified media. However, as far as we know, few works have been dedicated to the application of this method to poroelastic medium. In [12] the analytical solution of poroelastic wave propagation in an homogeneous 2D medium is ...
In the upper crystalline crust, direct observations of S-wave splitting have been reported in the Kola deep continental well from VSP measurements (Diagranes et al., 1996). A shear-wave velocity anisotropy up to 4.5% has been found there together with a direction of propagation of fast S ...
Wave propagation in negative-conductivity media The problem of TEM wave propagation in a structure containing a medium exhibiting negative differential conductivity is solved. Some difficulties emerging ... F Giannini,CM Ottavi,A Salsano - 《Electronics Letters》 被引量: 5发表: 1971年 On guided-wav...
This article is about ultrasonic wave propagation in microstructured porous media. The classic Biot’s model is enriched using a strain gradient appro
Some ocean sediments may be modeled as poro-elastic media with relatively high slow-wave speeds and relatively low shear-wave speeds [N.P. Chotiros, “Biot model of sound propagation in water-saturated sand”, J. Acoust. Soc. Amer. 97, 199–214 (1995)]. This singular limit may be hand...
This paper presents a numerical model based on the wave finite element method to study wave propagation and attenuation in periodic supported rails. The model involves postprocessing of element matrices of a rail span (i.e., rail segment between two supports), which is modeled using three-...
A multiscale model for the two-dimensional nonlinear wave propagation in a locally microdamaged medium is presented, and numerical simulations are analyzed in view of nondestructive testing applications. The multiscale model uses a statistical distribution of hysterons and upscales their microscopic stress...