Acoustic diffraction by an impedance covered halfplane
Abstract
Exact, closed form solutions for diffraction and backscattering by a halfplane whose surfaces exhibit arbitrary impedances were determined for the cases of a point source, a line source, and a plane wave. An integral method was devised that could account for the impedance boundary conditions. Since the solution is in a closed form, interpretation of the influence of the impedance covered halfplane on the diffraction field is greatly facilitated. Specifically, the effect of each surface on the acoustic field dominates in the halfspace in which it faces. Though the effect of each surface extends into the opposite halfspace behind the barrier, this influence is very small and diminishes even more as the observer moves further behind the barrier.
 Publication:

Ph.D. Thesis
 Pub Date:
 1977
 Bibcode:
 1977PhDT........25K
 Keywords:

 Acoustic Impedance;
 Boundary Value Problems;
 Half Planes;
 Wave Diffraction;
 Backward Waves;
 Boundary Conditions;
 Plane Waves;
 Point Sources;
 Surface Reactions;
 Acoustics