A tensile test specimen having a diameter of 5/8 in. and a gage length of 2 in.
ID: 1860676 • Letter: A
Question
A tensile test specimen having a diameter of 5/8 in. and a gage length of 2 in. was tested to fracture. The stress-strain curve from the tension test is shown in the figure. The lower plot is the expanded region OAB and associated with the strain values given on the lower scale.
Determine (a) the ultimate stress; (b) the fracture stress; (c) the modulus of elasticity; (d) the proportional limit; (e) the offset yield stress at 0.2%; (f) the tangent modulus at the stress level of 72 kips; (g) the secant modulus at the stress level of 72 kips
A tensile test specimen having a diameter of 5/8 in. and a gage length of 2 in. was tested to fracture. The stress-strain curve from the tension test is shown in the figure. The lower plot is the expanded region OAB and associated with the strain values given on the lower scale. Determine (a) the ultimate stress; (b) the fracture stress; (c) the modulus of elasticity; (d) the proportional limit; (e) the offset yield stress at 0.2%; (f) the tangent modulus at the stress level of 72 kips; (g) the secant modulus at the stress level of 72 kipsExplanation / Answer
A) ultimate stress = 80 ksi
B) Fracture stress = 50 ksi
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