Download JNTUA M.Tech 2nd Sem Reg-Supply 2018 Aug-Sept 9D04206c Mechanics And Manufacturing Methods of Composites Question Paper

Download JNTUA (JNTU Anantapur) M.Tech ( Master of Technology) 2nd Semester Reg-Supply 2018 Aug-Sept 9D04206c Mechanics And Manufacturing Methods of Composites Previous Question Paper || Download M.Tech 2nd Sem 9D04206c Mechanics And Manufacturing Methods of Composites Question Paper || JNTU Anantapur M.Tech Previous Question Paper

Code: 9D04206c

M.Tech II Semester Supplementary Examinations August/September 2018
MECHANICS & MANUFACTURING METHODS OF COMPOSITES
(Common to CAD/CAM & PEED)
(For students admitted in 2013, 2014, 2015 & 2016 only)

Time: 3 hours Max. Marks: 60
Answer any FIVE questions
All questions carry equal marks
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1 What are the different types of composites used in industry? Also list out their aerospace
and structural applications.

2 For a glass epoxy composite E
f
= 85 GPa, E
m
= 3.4 GPa, Poisson?s ratio V
m
= 0.3 and
V
f
= 0.25. Find the minor Poisson?s ratio V
21
and G
21
for a fiber volume fraction of 60%.

3 Obtain an expression for the longitudinal tensile strength, minimum fiber volume fraction
and critical fiber volume fraction of a unidirectional lamina using mechanics of material
approach.

4 What is Hooke?s law? Derive the Hooke?s law for the two dimensional unidirectional
lamina.

5 Explain the various features of the following laminates:
(a) Cross ? ply laminates.
(b) Angle ? ply laminates.

6 Discuss the following in detail:
(a) Free ? edge effects.
(b) Failure envelope.

7 Derive the governing differential equation for a laminated unidirectional anisotropic plate
and deduce the conditions for orthotropic and isotropic plates.

8 Explain the following in detail:
(a) Resin transfer molding.
(b) Preparation of fiber reinforced laminates by hand lay ? up.

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