Abstract
A number of empirical and semiempirical expressions which relate the strength of brittle polycrystalline materials to the total porosity have been proposed by various investigators. The present study demonstrates from a purely theoretical point of view that not only the total porosity but the pore shape and orientation are important factors affecting the strength. A strength‐porosity relation is derived that takes pore shape and orientation into account. Examples of how various types of pores should affect the strength are presented.
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