Effects of Specimen Size and Notch Acuity on the Brittle Fracture Strength of a Heat-Treated Steel

Effects of Specimen Size and Notch Acuity on the Brittle Fracture Strength of a Heat-Treated Steel

S. Yukawa,J. G. McMullin;S. Yukawa;J. G. McMullin;
Journal of Basic Engineering 1961 Vol. 83 pp. 541-544
181
mcmullin1961journaleffects

Abstract

Effects of various methods of notch preparation on the notched slow bend fracture strengths of heat-treated alloy steel specimens were studied. The results indicate that several kinds of cracks result in about 35 per cent lower strength than a machined 0.005 in. root radius notch. The importance of testing sufficiently large size specimens to reveal this difference is shown.

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