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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
THIRD SEMESTER M.TECH DEGREE EXAMINATION, DECEMBER 2017
(Mechanical Engineering)
Specialization -Production Engineering
07ME 7221 MICRO AND NANO MACHINING
Time: 3 hours Max. Marks: 60
Answer all six questions. Part of each question is compulsory.
Answer either part or part of each question
Q.no. Module 1 Marks
1a Classify different types of micromachining processes? 4
Answer b or c
1b Explain the differences in cutting mechanisms involved in macro and micro
machining?
5
1c Explain "size effect"? How this influence micromachining process? 5
Q.no. Module 2 Marks
2a Explain the different steps involved in LIGA process? 4
Answer b or c
2b Explain the term "sputtering yield" in ion beam machining? What are the
factors affecting sputtering yield?
5
2c What is isotropic and anisotropic etching? Explain the reason for both in
Silicon crystal?
5
Q.no. Module 3 Marks
3a Explain the principle of mask based laser beam machining? 4
Answer b or c
3b Explain the advantages and limitations of ion beam machining? 5
3c What is electroforming? State it's advantages and disadvantages? 5
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Q.no. Module 4 Marks
4a Explain the requirements of a microturning machine? 4
Answer b or c
4b Explain the different types of tool materials used in micro grinding? 5
4c Explain the liquid metal ion sources used in ion beam machining? State it's
advantages?
5
Q.no. Module 5 Marks
5a Explain the principle of electrochemical micromachining? 5
Answer b or c
5b Explain the principle of electric discharge micro machining? 7
5c Explain the requirements of a micro EDM system? 7
Q.no. Module 6 Marks
6a What are the advantages of electrochemical micromachining? 5
Answer b or c
6b Explain the effect of different parameters in micro EDM process? 7
6c Explain the different factors affecting electrochemical micromachining? 7