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Abstract— The use of a previously presented general criterion of failure for high cycle multiaxial fatigue, τ a / t A,B +σ n.max /2σ T = 1, is extended to cases where the shear and normal stress on the critical plane are non‐proportional and also to give life predictions in the range of 10 4 to 10 6 cycles. The criterion takes account of whether case A cracks, growing along the surface, or case B cracks, growing in from the surface, occur.
D. L. McDiarmid (Thu,) studied this question.