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1. A metal composite is composed of metal M reinforced by parallel wires of metal W. The volume fraction of W is 50%, and W has a yield stress of 200 MPa and a modulus of 210 GPa. Material M has a yield stress of 50 MPa and a modulus of 30 GPa. What is the maximum stress that the composite can carry without yielding? (5 Marks) 2. List 5 assumptions made for calculating stresses and displacement of beams under thermal loading. (5 Marks) 3. Briefly explain how does Finite Element Model (FEM) work? Why is it not possible to get exact solution using FEM? In what way can you ensure that FEM solutions are to nearest approximation? What types of refinement in FEM and which one will give better results? (5 marks) 4. Explain how does, a ductile, brittle and fatigue failure occur in a metal, explain in detail the procedure to determine state of stress on machine components. (5 marks) 5. List five assumption of plasticity theory? (5 marks) 6. What do you understand by the term "Stress Cycle" under Drucker's Postulate for associated and non-associated flow rule in plastic deformation of materials? (5 marks) 7. Explain in detail how one can determine the maximum force due to impact loading (5 marks) 8. Give 2 examples of structural composite material and advantages of using these materials. (5 marks)