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Unformatted text preview: (b) To find the ultimate tensile strength, find the maximum load and compute the corresponding stress. This stress is referred to as the ultimate tensile strength because it is associated with the maximum load that a unixially loaded specimen can carry in tension. (c) To find the elastic modulus, simply find the slope of the load deflection curve in the beginning linear region, and then normalize to convert this to stress/strain. (d) Using the change in length and the approximation that the volume is about the same, estimate the average cross-sectional area in the gage region. Use this area to compute the true stress at the maximum load. 10 20 30 40 50 60 70 5 10 15 20 25 30 load (kN) elongation (mm) 10 20 30 40 50 60 70 0.5 1 1.5 2 elongation (mm) Detail of small elongation region....
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- Spring '08