This paper examines the axisymmetric problem of an external circular crack, which is located in a fibre-reinforced elastic solid. In contrast to the classical problem where the surfaces of the crcak region are traction free. this paper considers the situation in which fibres exhibit continuity across the external crack thereeby inducing d displacement dependent traction boundary condition. The influence of the bridging action on the crack opening mode stress intensity factor at the crack tip, created by axisymmetric loading of a doublet of concentrated forces, is examined.
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