A overview is given of fracture mechanics models which incorporate a description of the near-tip fracture process. Emphasis is on applications to metals and interfaces between metals and ceramics where plastic flow makes a substantial contribution to toughness and crack growth resistance. Important scaling distinctions emerge between computational models for fracture taking place by void nucleation, growth and coalescence and those characterizing cleavage or decohesion.KEYWORDSFracture models, crack tip stresses, crack growth resistance, metal-ceramic interfaces.
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