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Material Technology : Question Paper May 2016 - Mechanical Engineering (Semester 4) | Mumbai University (MU)
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Material Technology - May 2016

Mechanical Engineering (Semester 4)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.


Write note on any four

1(a) Thermal fatigue of matel(5 marks) 1(b) Andrade's analysis of classical creep curve(5 marks) 1(c) Effect of Alloy on Eutectoid temperature and composition(5 marks) 1(d) Critical resolved shear stress(5 marks) 1(e) Dislocation Interaction(5 marks) 2(a) What do you mean by Nano-material? Explain their properties and practical applications.(10 marks) 2(b) What is Fatigue? Explain fatigue testing in detail.(10 marks) 3(a) Draw Fe-Fe3C Diagram and explain cooling of 0.9 % C alloy in the Fe-Fe3C Diagram.(10 marks) 4(a) Draw and explain construction of Time Temperature Trasformation (TTT) diagrams of 0.8 % C alloy.(10 marks) 4(b) Derive an expression for Griffith theory of brittle fracture Explain Orowan's Modification.(10 marks) 5(a) What is plastic deformation? Distinguish between slip and twin mechanism of plastic deformation.(10 marks) 5(b) Classify crystal Imerfections. Distinguish between Edge and Screw dislocation(10 marks)


Write short note on any four

6(a) Composite materials(5 marks) 6(b) Ausforming(5 marks) 6(c) Yield point phenomenon(5 marks) 6(d) Hardenability rest(5 marks) 6(e) Normalizing(5 marks)

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