The cold-drawn AISI 1040 steel bar is25 mm wideby10 mm thickand has a 6-mm-diameterhole drilled through the center. It is subjected to anaxial load fluctuating from12kN to 28 kN. Estimate the fatiguefactor of safety based on achieving infinite life, and the yielding factor of safety. If infinite life isnot predicted, estimate the number of cycles to failure. Use the Modified Goodman criteria.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

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

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.