E B3E087 Total pages:2
PART ^
(Answer any FOUR questions)

9. With a neat sketch explain the procedure for fatigue testing and draw the S-N curve. What is the
significance of S-N curve? (10)

10. Brief upon the following

a) Stress concentration. (2.5)
b) Residual stresses. (2.5)
c) Brittle fracture. (2.5)
d) Ductile to Brittle transition temperature. (2.5)

11. Draw the creep curve and explain the phenomenon occurring at each stages of creep.

Give an application of creep phenomenon. (10)

12. Give atleast two applications of composites in aerospace industry. What properties

make them suitable for the above applications? (10)

13. What are smart materials? Give atleast two examples and applications for them.

(10)

14. Classify ceramics with practical applications for each. Give an example for each of

the AX, AmXp, AmBmXp type structures in ceramics. (10)