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Question: A steel test specimen (modulus of elasticity 30 x 106 lbiln2) in a compression test has a starting height = 2.0 in and diameter =1.5 in. The metal yields (0.2% off-set) at a load = 140,000 lb. At a load of_ 260,000 lb, the height has been reduced to 1.6 in. Determine: (a) yield strength and (b) flow curve parameters (strength coefficient and strain hardening exponent). Assume that the cross sectional area increases uniformly during the test.

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