Stress Analysis and SERR Calculation in Fiber/Matrix Interfacial Crack

Ahamd Ghanbari, Arash Rahmani, Ramin Soleimani, Farshid Tabatabaie


Stress analysis method was used to establish a theoretical model to find the energy release rate for initiation of an interfacial crack and progressive debonding with friction at debonded interface. For this propose, using stress equilibrium equations, boundary and continuity conditions and minimum complementary energy principle, we defined an expression for energy release rate, G, for a single fibre embedded in a concentric cylindrical matrix, to explore the fibre/matrix interfacial fracture properties. We determine the critical crack length by interfacial debonding criterion. Also, Numerical calculation results for fibre-reinforced composite, SiC/LAS, were compared with experimental data witch obtained by other methods.

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