A three-dimensional diagram is presented in which the fatigue limit of notched components is plotted as a function of the notch stress concentration factor K-t and the alpha(2)a/a(0) ratio, alpha, a and a(0) being a shape factor, the notch depth and the El Haddad-Smith-Topper length parameter, respectively. Intersections with the planes normal to the axes allow the display of the different influence of crack nucleation and propagation on the fatigue limit of notched components.
A three-dimensional graphical aid to analyze fatigue crack nucleation and propagation phases under fatigue limit conditions
ATZORI, BRUNO;LAZZARIN, PAOLO
2002
Abstract
A three-dimensional diagram is presented in which the fatigue limit of notched components is plotted as a function of the notch stress concentration factor K-t and the alpha(2)a/a(0) ratio, alpha, a and a(0) being a shape factor, the notch depth and the El Haddad-Smith-Topper length parameter, respectively. Intersections with the planes normal to the axes allow the display of the different influence of crack nucleation and propagation on the fatigue limit of notched components.
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