A standard 0.505-in.-diameter tensile bar was machined to a 2.00-in.-gage length from a copper-nickel alloy and the following data were collected:

After fracture, the gage length was 2.75 in. and the diameter was 0.365 in. Plot the engineering stress strain curve and calculate
(a) The 0.2% offset yield strength;
(b) The tensile strength;
(c) The modulus of elasticity;
(d) The % elongation;
(e) The % reduction in area;
(f) The engineering stress at fracture;
(g) The true stress at necking; and
(h) The modulus of resilience.

Transcribed Image Text:

Load (lbs) 0 1,000 2,000 3,000 4,000 6,000 8,000 10,000 11,000 9,000 Gage Length (in.) 2.00000 2.00045 2.00091 2.00136 2.0020 2.020 2.052 2.112 2.280 (maximum load) 2.750 (fracture)