Maurice Tutor

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    Argosy University/ Phoniex University/
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Category > Engineering Posted 14 May 2018 My Price 5.00

fatigue limit

A 1.50-inch-diameter steel bar is subjected to a cyclical axial load of Pmax = 75,000 lb in tension and 25,000 lb in compression. The fatigue limit (endurance limit) for a stress cycle with R = −1.0 is 75 ksi. The ultimate tensile strength is 158 ksi and the yield strength is 147 ksi.

(a) Equation (12.13) expresses the relationship between alternating stress and the mean stress in fatigue known as the Goodman line. Plot Eq. (12.13) on coordinates of σa(y-axis) versus σm(x-axis) and label the critical points on this graph.

(b) To what value would the endurance limit be reduced by the stress cycle given here?

Answers

Maurice Tutor
(5)
Status NEW Posted 14 May 2018 02:05 PM My Price 5.00

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