Abstract
The study of crack growth in microstructure of ceramic materials is important for establishing the relationship between homogeneous microstructures and mechanical properties. This paper has modelled the fracture behaviour of Al2O3/ZrB2/ZrO2 ceramic materials, and the cracking propagation and fracture resistance are investigated by numerical and experimental analysis. The crack propagation in AZ20 ceramic materials becomes more tortuous as the addition of reasonable reinforced phase, and the deflection occurs in the crack propagation. AZ20 ceramic composites are superior to the AZ40 ceramic composite materials in absorption of crack propagation energy. Comparison between the numerical and experimental results shows that the present numerical results are in good agreement with the experimental ones.
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