This paper presents a graphical method for the direct solution of fatigue design problems where the mode of overloading is to be taken into account. The material fatigue failure diagram is modified to give a new failure diagram called the safety diagram. The infinity of possible component designs is described by a line called the locus of design points. The intersection of the locus of design points with the safety failure diagram yields a direct design solution. Because of graphical difficulties, the method is limited to those cases where the locus of design points and the load lines are straight lines.

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