Using only Fig. 2.6, calculate the maximum load in tension testing of an annealed copper specimen with an original diameter of 5 mm. Estimate the modulus of resilience for a highly cold worked piece of steel having a hardness of 300 HB; for a piece of highly cold worked copper with a hardness of 100 HRB. For material B, K = 30,000, n = 0.5, Ao = 0.3 in2 . For material A, K = 60,000 psi, n = 0.5, Ao = 0.6 in2 .
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