Data Sheet for Composite Mechanics and Materials

1. Composite Materials Processing
1.
ultmultfmultf
ultfmultm
f
E
E
V
)()()(
)()(
)( min





2.
ultfmultf
ultfmultm
criticalf
E
E
V
)()(
)()(
)(





3.
12
21
1
)(
)(


 ult
T
ult
C E

4. )1()()( 3
2 fult
T
mult
T
V 
5.

















 11)()( 2
f
m
ult
T
mult
T
E
E
s
d

6.

















 11)()( 2
f
m
ult
C
mult
C
E
E
s
d

a.

fV
s
d 4

7. ],min[)( 211
CC
ult
C
SS
a.    f
fmf
f
m
ff
C
V
EEV
E
E
VVS









13
121
b.
f
mC
V
G
S


1
2
8.  multmfultfult
C
VV )()(2)( 1  
9. ult
T
ult
T
E )()( 222  
10. ult
C
ult
C
E )()( 222  
11. Elements of Compliance matrix [S]
1
11
1
E
S 
2
22
1
E
S 
2
21
1
12
2112
EE
SS
 



12
66
1
G
S 
12. Elements of Stiffness matrix [Q]
2112
1
11
1 

E
Q
2112
2
22
1 

E
Q
2112
121
2112
212
2112
11 







EE
QQ 1266 GQ 
13. Transformed Compliance matrix ][S
    )(2)( 4
22
22
6612
4
1111 SSCSSSCSS 
    )(2)( 4
22
22
6612
4
1122 CSCSSSSSS 
   22
662211
44
1212 )( CSSSSCSSS 
       3
661222
3
66121116 2222 CSSSSSCSSSS 
       3
661222
3
66121126 2222 SCSSSCSSSSS 
       44
66
22
6612221166 4222 CSSSCSSSSS 
14. Transformed Stiffness matrix ][Q
    )(22)( 4
22
22
6612
4
1111 SQCSQQCQQ 
    )(22)( 4
22
22
6612
4
1122 CQCSQQSQQ 
   22
662211
44
1212 4)( CSQQQCSQQ 
       3
662212
3
66121116 22 CSQQQSCQQQQ 
       3
662212
3
66121126 22 SCQQQCSQQQQ 
       44
66
22
6612221166 22 CSQSCQQQQQ 

2. Table 1: Typical properties of Fibres (SI system of units)
Table 2: Typical properties of Matrices (SI system of units)
S. No Property Units Graphite Glass Aramid
1 Axial Modulus GPa 230 85 124
2 Transverse Modulus GPa 22 85 8
3 Axial Poisson’s Ratio - 0.3 0.2 0.36
4 Axial Shear Modulus GPa 22 35.42 3
5 Axial Coefficient of thermal expansion µm/m/°C -1.3 5 -5
6 Transverse Coefficient of thermal expansion µm/m/°C 7 5 4.1
7 Axial Tensile Strength MPa 2067 1550 1379
8 Axial Compressive Strength MPa 1999 1550 276
9 Transverse Tensile Strength MPa 77 1550 7
10 Transverse Compressive Strength MPa 42 1550 7
11 Shear Strength MPa 36 35 21
12 Specific Gravity - 1.8 2.5 1.4
S. No Property Units Epoxy Aluminium Polyamide
1 Axial Modulus GPa 3.4 71 3.5
2 Transverse Modulus GPa 3.4 71 3.5
3 Axial Poisson’s Ratio - 0.3 0.3 0.36
4 Transverse Poisson’s Ratio - 0.3 0.3 0.35
5 Axial Shear Modulus GPa 1.308 27 1.3
6 Coefficient of thermal expansion µm/m/°C 63 23 90
7 Coefficient of moisture expansion m/m/kg/kg 0.33 0 0.33
8 Axial Tensile Strength MPa 72 276 54
9 Axial Compressive Strength MPa 102 276 108
10 Transverse Tensile Strength MPa 72 276 54
11 Transverse Compressive Strength MPa 102 276 108
12 Shear Strength MPa 34 138 54
13 Specific Gravity - 1.2 2.7 1.2