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The probability of detecting crack-like defects using ultrasonic techniques can be severely reduced if the crack is closed by a static background pressure. In this paper, we model the contacting… (More)

A general solution is developed for the acoustic and structural scattered response from the junction of two flat plates under unilateral fluid loading. The plates are modelled by the classical theory… (More)

The factorization of Wiener–Hopf matrices with exponentially growing elements has long remained an unsolved problem. Such matrices often occur in the calculation of scattering from complex canonical… (More)

This paper discusses the two-dimensional scattering of sound waves by two semi-infinite rigid parallel plates. The plates are staggered, so that a line in the plane of the motion passing through both… (More)

- Geoffrey Wickham
- 1995

The diffraction of acoustic, electromagnetic and elastic waves by an edge is a subject of continuing mathematical and physical importance. The physical motivation for research is the vast number of… (More)

Abstract An improved solid phase synthesis of benzimidazoles is described. A polymer-bound o -nitroaniline was reacted with aldehydes in DMF in the presence of SnCl 2 ·2H 2 O at 60°C for three hours… (More)

Abstract In this paper we examine the transmitted and reflected waves generated by plane surface water waves incident on two semi-infinite vertical walls. Cartesian coordinates ( x, y, z ), z… (More)

Abstract T his paper , the first of two articles, is concerned with the scattering of elastic waves by arbitrary surface-breaking or near surface defects in an isotropic half-plane. We present an… (More)

This paper is the first in a series of articles describing the refraction and propagation of infinitesimal disturbances in a \`coarse grained' inhomogeneous anisotropic material which is fused to an… (More)