Two steels are being considered for manufacture of as-forged connecting rods subjected tobending loads. One is AISI 4340 Cr-Mo-Ni steel capable of being heat-treated to a tensilestrength of 260 kpsi. The other is a plain carbon steel AISI 1040 with an attainable Sut of113 kpsi. Each rod is to have a size giving an equivalent diameter de of 0.75 in. Determinethe endurance limit for each material. Is there any advantage to using the alloy steel for thisfatigue application?

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false