A graphical comparison of the different criteria for a member subjected to fluctuating load is shown in the figure below. What do curves A and B represent if is yield strength, is the ultimate strength and is fracture stress?
A-Goodman and B-Gerber
A-Gerber and B-Soderberg
A-Soderberg and B-Goodman
A-Soderberg and B-Gerber
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