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- W1642839681 abstract "Green Function-based beam transmission models are attractive due to their ability to explicitly handle transmission through complicated geometrical surfaces, such as flat-to-circular arc compound profiles. The beam model considered in this paper integrates the field generated by a point source positioned within a solid body over a radiating aperture surface (transducer face) in a fluid medium exterior to the solid body. In full generality, evaluation of the Green function at a point on the aperture surface requires an integration over the component surface (solid-water interface). For geometries of practical interest, this integration can be effectively evaluated by applying high-frequency asymptotic techniques (stationary phase analysis=ray theory). However, first-order asymptotic methods fail at focusing caustics, that is, when the component surface curvature focuses the field generated by the interior point source onto the aperture surface. Uniform asymptotic methods are available to treat such problem..." @default.
- W1642839681 created "2016-06-24" @default.
- W1642839681 creator A5020928313 @default.
- W1642839681 date "2000-01-01" @default.
- W1642839681 modified "2023-09-27" @default.
- W1642839681 title "Caustics in asymptotic Green Function transmission models" @default.
- W1642839681 doi "https://doi.org/10.1063/1.1306152" @default.
- W1642839681 hasPublicationYear "2000" @default.
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