Question: A steel rotating - beam test specimen has an ultimate strength of 1 6 0 0 MPa . Estimate the life of the specimen if

A steel rotating-beam test specimen has an ultimate strength of 1600 MPa . Estimate the life of the specimen if it is tested at a completely reversed stress amplitude of 900 MPa .
[Hints: Solution: ,N=46,400 cycle.]
A steel rotating - beam test specimen has an

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