1. At one point during a fatigue test, the rate of crack growth is measured as 0.57mm/cycle. If the constants are known to be A=0.30, and m=0.2(for crack growth in mm/cycle), what is the cyclic stress intensity?
2. The maximum permitted strain amplitude that would allow a component to survive 1000 cycles under fully reversed plastic loading is approximately(C=0.21,c=0.5)?