Abstract
A subsonic surface wave in a semi-infinite elastic plate is incident upon, and reflected from, the plate edge, and thereby generates a propagating acoustic diffraction field in the fluid surrounding the plate. The amplitude and directivity of this field are determined for a variety of edge conditions in the case of weak fluid-surface coupling. The results have important application to the scattering of elastic waves induced by aerodynamic pressure fields acting far from the plate edge. It is shown in particular that the acoustic power of a turbulent eddy very far from the edge, but close to the plate, may be greatly increased by long-range surface wave coupling of the eddy to the edge.
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