= 18. The Goodman diagram shows a VS. Om for fatigue failure after a specific number of cycles Nf, where a is the cyclic stress amplitude, and m the mean stress. For a steel specimen it is found that a a(0).[1-(m/TS)] where OTS is the tensile stress (400MPa). a(0) = 0.35TS is the 107 cycle fatigue limit at zero mean stress. Assuming the specimen is cycled repeatedly between 0 stress and a peak stress, what is the maximum peak stress if failure in