Table 2.

The materials properties [16–18] used in the micromechanics model.

Symbol	Definition	Value
E resin	Epoxy resin modulus	3.854 GPa
E CNF	CNF modulus	600 GPa
S resin	Epoxy resin tensile strength	0.141 GPa
S CNF	CNF tensile strength	7.0 GPa
λ resin	Poison's ratio of epoxy resin	0.265
λ CNF	Poison's ratio CNF (assumed to be the same as a typical carbon fiber)	0.2
v CNF	CNF volume fraction	0.069
v m	Matrix volume fraction	1 − v CNF
ρ CNF	CNF density	1.8 g/cm3
ρ resin	Epoxy resin density	1.2 g/cm3
l CNF	Length of CNF	100 μm
d CNF	Diameter of CNF	0.2 μm