A steel has a tensile strength of 90,000 psi and an endurance limit of 40,000 psi when the surface is ground.
(a) Find the value of constants A and B for Basquin’s equation.
(b) For a loading of σavg = 27,050 psi and σr = 20,020 psi and a stress concentration factor 1.5, find the value of σr, the equivalent completely reversed stress.
(c) For the loading of part (b), calculate the expected number of reversals to failure.
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