Module 6 None-Metallic Materials Objective Six Flashcards
1
Q
Isotropic Properties
A
Properties are all in the same direction
2
Q
Ec=
A
KEfVf+EmVm
3
Q
K
A
a factor representing fiber-reinforcing efficiency
4
Q
Ec
A
the modulus of elasticity for the final composite
5
Q
Ef
A
the modulus of elasticity for the fibre
6
Q
Em
A
he modulus of elasticity for the final matrix
7
Q
Vf
A
the volume fraction of the fibre
Vf+Vm=1
8
Q
Vm
A
The volume fraction of the matrix
Vf+Vm=1
9
Q
Anisotropic Property
A
the properties are orientation dependent
10
Q
Lc
A
critical fibre length, the necessary length to provide enough interfacial bonding between the matrix and the fibers
11
Q
Lc=
A
(σuf*d)/(2Tc)
12
Q
σuf
A
ultimate tensile strength of the fiber
13
Q
Tc
A
the smaller value of the fiber matrix bond strength or the matrix shear yield strength
14
Q
d
A
fiber diameter
15
Q
> 15 Lc
A
long or continuous fibres
