Abstract
This article deals with the solution of the problem of diffraction of a time‐harmonic obliquely incident plane acoustic wave by four equal infinite coaxial soft circular strips. A simple integral equation technique is presented to solve this two‐dimensional problem by the perturbation method when the wavelength of the incident plane wave is much larger than the radius of the circular strips. Approximate expressions for the farfield amplitude and the scattering cross section are derived.
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