Dispersion and attenuation of surface waves due to distributed surface‐breaking cracks

摘要: Dispersion and attenuation of surface waves propagating over the free a half‐space containing distributed surface‐breaking cracks are investigated. The 3‐D problem scattering by single crack is first formulated characteristic amplitude factor scattered wave expressed in terms opening displacements. A relation between this power flow then derived. cross section introduced as measure energy removal from incident wave. By using considerations, coefficient subsequently section. Use Kramers–Kronig yields an expression for phase velocity. Numerical results given both velocity, functions density, length dimension frequency. theoretical framework pro...