SEDL / STP / STP803V2-EB / STP36795S

Load History Effects on the J^R-Curve

Landes, JD
Advisory scientist and senior engineer, Westinghouse R#x0026;D Center, Pittsburgh, Pa.

McCabe, DE
Advisory scientist and senior engineer, Westinghouse R#x0026;D Center, Pittsburgh, Pa.

Pages: 16    Published: Jan 1983

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Abstract

The effect of load history on theJ-Δa behavior of materials was studied under cyclic loading conditions. Two steels were studied, an HY-130 steel and a A508 Class 2 steel. The HY-130 steel showed little effect of the cyclic loading and the behavior was labeled “R-curve-dominated crack growth.” The A508 Class 2 steel showed a significant effect of the cyclic loading and the behavior was labeled “cyclic-dominated crack growth.”