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The stress-strain diagram for a steel alloy having an original diameter of 0

Civil Engineering

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The stress-strain diagram for a steel alloy having an original diameter of 0.5 in. and a gauge length of 2 in. is given in the figure. Calculate the modulus of elasticity, the yield strength, the ultimate stress, and the fracture stress. If the specimen is loaded until it is stressed to 50 ksi, determine the approximate amount of elastic recovery and the increase in the gauge length after it is unloaded.