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7/23/2019 Cms Internal Test 2
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Roll No__________________
KUMARAGURU COLLEGE OF TECHNOLOGOY, COIMBATORE – 641 049
Departe!t "# Aer"!a$t%&a'
INTERNAL TEST - II
(ee)ter *+
Degree & Branch: BE - Aer"!a$t%&a' E!.%!eer%!. Date : /**/01Sub Code & Name AER11 - C"p")%te Mater%a') - (tr$&t$re) Time: FNDuration: Two hrs Maximum Marks: !
2ART A
3A!)er A'' t5e $e)t%"!)7 310 8 1 10 Mar:)7
"# The $ro$erties o% the com$osite are determined b'a( The geometr and orientation o% the %ibres
in the com$osite
'b( The ratio o% %ibre to resin in the com$osite
')ibre *olume )raction('c( The $ro$erties o% the %ibre+resin 3;7 A'' t5e a<"=e
,# )or better im$act resistance the most suitable material is'a( Carbon + -$ox 3<7 Ke='ar > Ep"8?'c( -./lass + -$ox 'd( None o% these
0#The %unction o% resin is to
'a( se$arate 'b( attract
3&7 <%!; 'd( collect
1# The resin %re2uentl used at room tem$erature is
'a( carbon 'b( %ibre
'c( glass 3;7 ep"8?
# The densit o% glass %ibres is3a7 M"re t5a! t5at "# &ar<"! #%<re) 'b( less than that o% carbon %ibres'c( -2ual to carbon %ibres 'd( None o% the abo3e
4# 5ramid %iber is also called as'a( /lass %iber 'b( Carbon %iber3&7 Ke='ar #%<er 'd( None o% these
6# Mass Densit o% a 7l com$osite is denoted b 89 ;
3a7 @# # @ 'b( 9% *% . 9m*m
'c( 9% <*% < 9m<*m 'd( '9% *% ( + '9m*m(
=# ______ material is brittle> hard> strong in com$ression> weak in shearing and tension#
3a7 Cera%& 'b( 7lastic
'c( metal 'd( com$osite
?# __________ is an indication o% a com$osite material@s abilit to resist de%ects or discontinuities
such as holes and notches#
3a7 Fra&t$re T"$.5!e)) 'b( Tensile strength
'c( Am$act strength 'd( Delamination
"!# )lexibilit is de%ined as the in3erse o% ......... sti%%ness
'a( Moment 'b( shear 3&7 <e!;%!. 'd( axial
2ART B 38/ 10 Mar:)7
11.
Distinguish between natural axis and arbitrary axis?
1 Distinguish between open mould and close mould processes
7/23/2019 Cms Internal Test 2
http://slidepdf.com/reader/full/cms-internal-test-2 2/2
2.13.
How local and global stresses are related?
14.
Explain flament winding?
15.
What is meant by elasticity approach?
2ART C 3810 0 Mar:)7
3A!)er a!? T5ree $e)t%"!)7
16.
Brie%l ex$lain the o$en moulding $rocess#
17.
Deri3e the ex$ression %or stress strain relation with res$ect to natural axis
18.
Deri3e the ex$ression %or stress strain relation with res$ect to arbitrar axis
19.
)ind the %ollowing %or a 4! angle lamina o% gra$hite+e$ox# se the $ro$erties o%unidirectional gra$hite+e$ox lamina %rom -";"="/7aE -,;"!#0 /7aE v",;!#,=E
/",;6#"6/7aE
'i( Trans%ormed com$liance matrix
'ii( Trans%ormed reduced sti%%ness matrix20.
)ind the %ollowing %or a 4! angle lamina o% gra$hite+e$ox# se the $ro$erties o%unidirectional gra$hite+e$ox lamina %rom -";"="/7aE -,;"!#0 /7aE v",;!#,=E
/",;6#"6/7aEFx;,M7a> F;.0 M7a> Fx;1M7a
'i(/lobal strains
'ii(Gocal stresses'iii(local strain
'i3($rinci$al stresses
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