gue and Miner's Rule The varying, fluctuating stresses shown to the below are found at the critical location of a component. The material is steel, the fully adjusted endurance limit is 25 ksi, the ultimate strength is 200ksi. The fatigue strength fraction is f= 0.77. What is the life of the part in hours if this 6 second stress pattern continues to repeat for the remainder of the part's life? Oksi + 80 60 40 20 t (sec) -20 -40