B3E086S Pages: 2

PART ^
(Answer any FOUR questions)
9. a) Write short notes on stress concentration and stress raiser. (5) b)
Explain the Griffith theory of fracture. (5)
10. a) Sketch and explain the S-N curves for ferrous and nonferrous metals (5)

b) Explain the types of loading that causes fatigue failure. List the preventive

measures taken for reducing the risk of fatigue failure (5)

11. a) Explain Ductile to Brittle Transition Temperature. List the factors affecting this

phenomenon. (5)
b) Define Fracture toughness. (5)
12. a) Sketch creep curve and explain different stages of creep. (5)
b) What are the steps to be taken to prevent creep failure? (5)

13. a) Give two examples for ceramic materials. Explain the properties of ceramic

materials? (5)

b) Explain the classifications of Composite materials. (5)
14. Write short notes on:

a) Smart materials (5)

b) Bio Materials (5)

KAKA

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