A cylindrical aluminum specimen tested in tension has a strain hardening exponent n=0.5, strength coefficient K=482.63 MPa, and the reduction of area at failure Arf=0.86. - Determine the true strain at maximum load and the true strain at fracture - Determine the true tensile strength - Determine the engineering strain at maximum load and engineering ultimate tensile strength - Determine the percentage of reduction of initial section at maximum load A second specimen of the same material type is cold worked at 30% without producing necking. - Calculate the yield strength (σy) and tensile strength (σu) at cold worked - What is the percentage of reduction of area at fracture (Arf) of the cold worked materia