M.E. DEGREE EXAMINATION, DECEMBER 2010.

First semester

Manufacturing Engineering

MF 9260 — POLYMER AND COMPOSITE MATERIALS

(Regulation 2009)

Time: Three hours Maximum: 100 marks

Answer ALL the questions.

PART A — (10 2 = 20 marks)

1. State the difference between thermoplastics and thermosetting plastics.

2. State the structure, applications and types of thermoplastics.

3. Define mechanical fasteners? State the types? What is its necessity?

4. Define press fitting? State its advantages?

5. State the characteristics of ceramics? Classify ceramics in detail.

6. State the physical, chemical and mechanical properties of metals, ceramics, and polymers?

7. State some applications of PMC.

8. Define carbon matrix composites.

9. State some solid state fabrication techniques.

10. State some applications of MMC.

Question paper code: J 87456

PART B — (5 16 = 80 marks)

11. (a) Explain the difference between addition and condensation polymerization. (8)

(b) Explain the thermoplastics and thermosetting plastics in detail with neat sketches. (8)

Or

(a) State the properties and applications of some thermoplastic? (8)

(b) State the properties and applications of some thermoplastic? (8)

12. (a) Explain the machining parameters and their effects in detail with neat sketches. (16)

Or

(b) Explain the press fitting concept in detail with sketches? Why it is necessary? (16)

13. (a) Define polymer molecules? Explain the chemistry of polymer molecule in detail?(16)

Or

(b) Explain the various defects in polymers and diffusion in polymeric materials in detail with sketches. (16)

14. (a) Explain the following related to PMC.

a. Structure, applications, properties. (6)

b. Recycling. (6)

c. Interfaces. (4)

Or

(b) a. Explain the carbon matrix composite in detail. (8)

b. Compare the properties of metals, ceramics and polymers as matrix materials. (8)

15. (a) Explain the following

a. compo casting. (8)

b. rheo casting. (8)

Or

(b) State some applications of MMC and ceramic matrix composites in detail? (16)

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