1.A metal alloy has been tested in a tensile test with thefollowing results for the flow curve parameters: Strengthcoefficient=620.5 MPa and Strain-hardening exponent=0.26. The samemetal is now tested in a compression test in which the startingheight of the specimen=62.5mm and its diameter=25mm. Assuming thatthe cross section increases uniformly, determine
a) Plot the engineering stress-strain curve
b) yield strength
c) Modulus of elasticity
d) Tensile Strength
2.The maximum flexural stress on a transverse cross section of a beam2" x 4" with a rectangular cross section must not exceed 8 ksi.Determine the maximum resisting moment Mr that the beamcan support if the neutral axis is:
a) parallel to the 4" side
b) parallel to the 2" side
3.The free surface of a freshwater lake is at 2000 m MSL. Thetemperature of the water is 15 degrees Celsius. Calculate theabsolute pressure at a depth of 4 m in the lake.
a. 39.2 kPa (absolute)
b. 139.2 kPa (absolute)
c. 118.7 kPa (absolute)
d. 140.5 kPa(absolute)