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00000ME363121904

Pages: 2

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
Fifth semester B.Tech degree examinations (S) September 2020

Course Code: ME363
Course Name: COMPOSITE MATERIALS AND MECHANICS

PARTA
Answer any three full questions, each carries 10 marks.
What are the salient features required for matrix materials?
Explain about 1) Fibre pull out 2) Delamination 3) Fibre bridging 4) Debonding
Compare between properties of metals and composites.

Write a short note about wettability. Explain about three different conditions of
wetting.
Explain about Ex-Pitch carbon fiber fabrication

List three advantages and three disadvantages of natural fibers
Write a short note on wet jet spinning process for producing aramid fibers
What are the important application of aramid Fibers
PART ‏تا‎
‎Answer any three full questions, each carries 10 marks.
Write a short note on common thermoset polymeric matrix materials.
With neat sketches explain manufacturing of laminated composite using prepreg
Explain processing of thermoset matrix composites using spray technique.
List any four applications of polymer matrix composites
What are the modifications required in casting process for improving the
properties of metal matrix composites.
With neat sketches explain about In situ process by unidirectional solidification
“Precipitation-hardenable alloy materials are used in the manufacture of metal
matrix composites” Comment with proper examples.
Write a short note about diffusion bonding.
PART C
Answer any four full questions, each carries 10 marks.

State and explain Tsai-Wu Failure Theory

Duration: 3 Hours

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