Reflection and transmission of elastic waves at viscous liquid/micropolar elastic solid interface
Amplitude ratios of various reflected and transmitted elastic waves from a plane interface separating a viscous liquid half-space and a micropolar elastic solid half- space, are obtained in two cases (i) when longitudinal wave propagating through the solid half-space is made incident at the interface and (ii) when "coupled-wave" propagating through the solid half-space is made incident at the interface. These amplitude ratios have been computed numerically for a specific model and results obtained are presented graphically. It is found that these amplitude ratios depend on the angle of incidence of the incident wave and the effect of viscosity of the liquid on amplitude ratios is noticed. The problem studied by Tomar and Kumar (1995) has been reduced as a special case of our problem.
Propagation of thermoelastic plane waves at an imperfect boundary of thermal conducting viscous liquid/generalized thermoelastic solid
The reflection and transmission of thermoelastic plane waves at an imperfect interface between a thermal conducting viscous-liquid and generalized thermoelastic solid half-space has been investigated. The amplitude ratios of various reflected and transmitted waves are obtained for an imperfect boundary. Particular cases of normal stiffness, transverse stiffness, slip and welded boundaries are deduced. Some special cases of interest are also obtained from the present investigation. It is found that the amplitude ratios of various reflected and transmitted waves are affected by the stiffness and thermal properties of the media.
Reflection and refraction of a longitudinal microrotational wave at an interface between two micropolar elastic solids in welded contact
Abstract In this paper a longitudinal microrotational wave impinging at a plane discontinuity between two micropolar elastic solids in welded contact is discussed. The reflection and refraction coefficients of the longitudinal microrotational wave striking against the plane discontinuity have been calculated numerically and plotted as a function of angle of emergence for a specific model. The amplitude ratio have also been plotted as a function of frequency. The results of Parfitt and Eringen [ J. Acoust. Soc. Am . 45 (5), 1258–1272 (1969)] have been reduced as a special case.