Consider a compact specimen that is loaded cyclically at a constant load amplitude with Pmax = 18 kN and Pmin = 5 kN. Using the fatigue crack growth data in Problem 5.1, calculate the number of cycles required to grow the crack from a/W = 0.35 to a/W = 0.60. Plot crack size vs. cumulative cycles for this range of a/W.

On a average work day more than work place firs are reorted

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.