Effect of ensemble of stress concentrators on the ultimate tensile strength of material

Equilibrium of a (quasi)brittle crack in a uniaxially loaded material with an infinite linear row of stress concentrators is investigated. Dependence of the equilibrium crack length on the applied stress, internal loading, stress concentrator size, distance between neighboring concentrators etc. is found. Evaluation of the ultimate tensile strength of material with the linear row of voids, gas bubbles and secondary phase precipitates was carried out.