Question: The fatigue data for a brass alloy are given as follows: (a) Make an S?N plot (stress amplitude versus logarithm cycles to failure) using these

The fatigue data for a brass alloy are given as follows:

Stress Amplitude (MPa) Cycles to Failure 2 x 105 310 1x 100

(a) Make an S?N plot (stress amplitude versus logarithm cycles to failure) using these data.

(b) Determine the fatigue strength at 5 ? 105 cycles.

(c) Determine the fatigue life for 200MPa.

Stress Amplitude (MPa) Cycles to Failure 2 x 105 310 1x 100 223 3 x 106 191 1 x 107 168 3 x 107 153 1x 108 143 3 x 108 134 127 1 x 10

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