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| EFFECT OF INTERFACE YIELDING/DEBONDING ON CRACK PROPAGATION IN ANISOTROPY COMPOSITES |
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Abstract The influence of interface yielding/debonding on stress redistribution ahead of the crack tip is performed in laminated composites. By method of the superposition principle, a continuous distribution of sliding dislocation density is used to represent the interface yielding/debonding. This procedure reduces the problem to a singular integral equation which can be solved numerically by using of Chebyshev polynomials. The distribution of dislocations at the interface is numerically obtained. The role of the interface debonding which redistributes the stress ahead of the crack tip in the neighboring uncracked layer is also presented. It is concluded that the interface debonding or yielding weakens the stress singularity near the crack tip and has a shielding effect on the crack growth in anisotropic composites.
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Received: 02 December 2014
Published: 28 August 2015
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2015, Vol. 36 
