Abstract
An improved analysis considering the effects of interface roughness and thermal residual stresses in both radial and axial directions is developed for the single fiber push-out test. The roughness of the interface, which has a significant effect on the fiber sliding behavior, is expressed by a Fourier series expansion that has good convergence and can handle general shapes of roughness. The interfacial shear stress that plays an important role in interfacial debonding is very much affected by the axial thermal residual stress in the bonded region, which can induce a two-way debonding mechanism. It has been found that both residual stress and interface roughness have pronounced effects on the stress transfer across the interface and interfacial debonding behaviour.
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