Page 1 of 2 Term End Examination - November 2011 Course : MEE338 - Design of Composite Materials Slot: G2 Time : Three Hours Max.Marks:100 PART – A (10 X 2 = 20 Marks) Answer ALL the Questions 1. What is the difference between an unsaturated polyester and a saturated polyester? 2. Define the glass transition temperature with a neat sketch. 3. Briefly describe the test that is used to measure the interfacial properties for the elastic and brittle materials. 4. What do you understand by the term autoclave? 5. List any two plastics that are prone to creep failure and illustrate how? 6. Name the techniques with which the hardness of the plastics is measured. 7. Give an example of an angle ply composite laminate. 8. Delineate between a hydrothermal and hygrothermal stress in a composite laminate. 9. List any four failure theories for composite laminates. 10. Write down the demerits of a bonded joint. PART – B (5 X 16 = 80 Marks) Answer ALL the Questions 11.(a) Write an essay on the high performance polymer fibres, clearly describing their processing and obtainable properties. OR 11.(b) Write an essay on the high performance carbon fibre types, their processing and obtainable properties.
