During a high cycle fatigue test, a metallic specimen is subjected to cyclic loading with a mean stress of + 140 MPa, and a minimum stress of 70 MPa. The R-ratio (minimum stress to maximum stress) for this cycle loading is _______ (round off to one decimal place).

During a high cycle fatigue test, a metallic specimen is subjected to

1.	During a high cycle fatigue test, a metallic specimen is subjected to cyclic loading with a mean stress of + 140 MPa, and a minimum stress of 70 MPa. The R-ratio (minimum stress to maximum stress) for this cycle loading is _______ (round off to one decimal place).
A.	0.1
B.	0.2
C.	- 0.1
D.	- 0.2
Answer» E.

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During a high cycle fatigue test, a metallic specimen is subjected to cyclic loading with a mean stress of + 140 MPa, and a minimum stress of 70 MPa. The R-ratio (minimum stress to maximum stress) for this cycle loading is _______ (round off to one decimal place).

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