A steel alloy is subjected to a tensile load and exhibits the stress-strain beha

Question

A steel alloy is subjected to a tensile load and exhibits the stress-strain behavior shown below. 600 Sample length: 500 mm 500 Sample cross section: - 400 500 300 400 2 cm 200 200 100 0 100 0.000 0.002 0.0040.006 Strain 0.00 0.04 0.08 0.12 0.160.20 Strain c) A force of 125,000 N is applied and maintained to a sample made from this alloy. What is the resulting strain in the sample? (6 pts) 5mm250 mPa 40 d) Circle the correct answer AND explain why this answer is correct. (pts) After the applied stress from (&) is removed, the length of the sample, 2 will be: 1· be 500mm 2, C= 500 mm 3, 500 503mm Explanation for your answer choice above: Plashc regun begins at a ain f au hus rampiu har ben dfynedt

Explanation / Answer

c.) Load = 125000 N
Area of sample = pi * (100) mm2 = 314.16  mm2
Stress = Load/Area = 397.9 MPa
From graph, we get strain (approximately) = 0.0035

d.) After the load is removed, residual strain is between 0 to 0.0035
Increased length = 0 to 0.0035*500 mm = 0 to 1.75 mm
The lenght would be between 500 to 503 mm. Option C

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