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Citation - WoS: 8
Citation - Scopus: 9
Diffraction of Waves by an Impedance Half-Plane
(Elsevier Science Bv, 2013) Umul, Y. Z.
The solution of the diffraction problem of waves by an impedance half-plane that satisfies the impedance boundary condition is obtained for the first time in the literature. A reflection coefficient which is the function of the angular and spatial variables in the polar coordinates is defined and its exact expression is obtained with the aid of the impedance boundary condition. The resultant diffraction field is compared with the solution of Malyuzhinets numerically and their differences are stressed. The structures of the total scattered, geometrical optics and diffracted waves are also investigated. (C) 2013 Elsevier B.V. All rights reserved.
Citation - WoS: 7
Citation - Scopus: 8
Fringe Waves Radiated by a Half-Plane for the Boundary Conditions of Neumann
(Springer Heidelberg, 2008) Umul, Y. Z.
The fringe waves of the physical theory of diffraction are obtained in terms of Fresnel integrals for a half-plane satisfying the Neumann boundary condition. The approximate expressions of the radiated waves are also evaluated for sufficiently large wavenumbers. The fields are plotted and compared numerically.

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