Fatigue crack growth under general-yielding cyclic-loading
1986
In low cycle fatigue, cracks are initiated and propagated under general-yielding cyclic-loading. For general-yielding cyclic-loading, Dowling and Begley have shown that fatigue crack growth rate correlates well with the measured ΔJ. The correlation of da/dN with ΔJ has also been studied by a number of other investigators. However, none of these studies has correlated da/dN with ΔJ calculated specifically for the test specimens. Solomon measured fatigue crack growth in specimens in general-yielding cyclic-loading. The crack tip fields for Solomon’s specimens are calculated, using the finite element method, and the J-values of Solomon’s tests are evaluated. The measured crack growth rate in Solomon’s specimens correlates very well with the calculated ΔJ.
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