1 a steel cable 125 inches in diameter and 50 ft long is to

Question

1) A steel cable 1.25 inches in diameter and 50 ft long is to lift a 40,000 lb weight. What is the length of the cable during lifting? The modulus of elasticity of the steel is 30x106 psi.

2) A large flat plate is subjected to constant amplitude uniaxial cyclic tensile and compressive stresses. Compute the critical crack length if the fatigue life must be at least 3x106 cycles. Assume the initial maximum edge surface crack length to be 1.1 mm, and a maximum tensile stress of 160 MPa. Assume m=3.0, A=1.4x10-13MPa in meter units, and Y=1.2.

3) Using the attached figure, for a Cu-20% Wt Ag alloy, determine the phases present, their percentage amounts, and their compositions at

a. 1000 degrees Centigrade
b. 781 degrees Centigrade
c. 779 degrees Centigrade

Answer 1

Solve the numerical question of electrical by showing the whole calculation part. Question 1: A steel cable of 1.25 inches in diameter and 50 feet long is to lift a weight of 40,000 lb. Find out the length of the cable throughout lifting? The modulus of elasticity of steel is around 30x106 psi. Question 2: A big flat plate is subjected to constant amplitude uniaxial cyclic tensile and compressive stresses. Calculate the critical crack length if the fatigue life should be at least 3x106 cycles. Suppose the initial maximum edge surface crack length to be 1.1 mm and a maximum tensile stress of 160 MPa. Suppose m = 3.0, A = 1.4x10-13MPa in meter units and Y=1.2.