New Approach to Rayleigh Wave Propagation in the Elastic Halfspace - Viscoelastic Layer Interface

The Rayleigh wave propagation problem in the elastic halfspace - viscoelastic layer interface was analysed in the paper. The problem was formulated in the Fourier-Laplace space using the Biot viscoelastic solid model. The characteristic equation has taken the Rayleigh equation form with correction term describing viscoelastic layer properties influence on the wave velocity. The approach presented here seems to be useful for surface acoustic waves gas sensors modelling because many chemisensitive coatings applied to the sensors exhibit viscoelastic properties.