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RESEARCH PAPERS

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

[+] Author and Article Information
S. Yukawa

Materials and Processes Laboratory, Large Steam Turbine-Generator Department, General Electric Company, Schenectady, N. Y.

J. G. McMullin

Research Laboratory, Crucible Steel Company; Large Steam Turbine-Generator Department, General Electric Company, Schenectady, N. Y.

J. Basic Eng 83(4), 541-544 (Dec 01, 1961) (4 pages) doi:10.1115/1.3662260 History: Received December 09, 1960; Online November 04, 2011

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.

Copyright © 1961 by ASME
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