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(a) Compare and contrast Concurrent (or Simultaneous) Engineering and Sequential Engineering. Briefly list the advantages of concurrent Engineering. (b) What is strain rate hardening? How is it different from strain

hardening? How do you decide whether to use strain hardening and or strain rate hardening? (c) What is residual stress? Suggest two ways of eliminating it. A colleague claims that all effort should be made to eliminate residual stresses in a metal part subject to fatigue loading in service. Do you agree with this statement? Justify your answer.

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