Abstract
A numerical experiment and a model of the region of contact of the edges of a crack are used as the basis for evaluating different parameters of fracture for two type of ferroelectric ceramics—PbTiO3 and BaTiO3—obtained by hot pressing. Consideration is given to features associated with inhibition of anomalous grain growth, deviation of the crack from a straight line due to structural nonuniformity, and the roughness of the fracture surface. The effect of roughness is independent of the parameter that characterizes inhibition of grain growth and causes the results for both ceramics to be close to one another.
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