Published: Jan 1972
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The fatigue-crack growth rate of Type 304 stainless steel was studied at 1000 F with cyclic frequencies ranging over approximately 4 1/2 orders of magnitude. It was found that as frequency decreased, the fatigue-crack growth rate showed a significant increase, and the behavior could be characterized by an equation of the form da/dN = A(f) [ΔK]n, where the exponent n represents a constant for all of the frequencies studies.
fatigue (materials), crack propagation, frequency, stresses, cracks, stress ratio, analytic geometries, stainless steels
Senior research engineer, Westinghouse Hanford Co., Richland, Wash.