Question: Question 1 . A solid circular cross section bar has 3 0 m m in diameter has a groove 3 m m deep with a

Question 1.A solid circular cross section bar has 30mm in diameter has a groove 3mm deep with a 3mm radius machined into it . the bar is made of AISI 1020 HR STEEL, and is subjected to a pure tension compression cyclic load ranging between 5 to KN, estimate numbers of cyclic to failure ? assume f=.9 using modified goodman fatigue equations

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