Table 3.

Average properties of PEKK

Averaging scheme	Bulk modulus	Young’s modulus	Shear modulus	Poisson's ratio
Voigt	KV = 0.00053146 GPa	EV = 0.0034455 GPa	GV = 0.0041067 GPa	νV = − 0.58051
Reuss	KR = 0.00053142 GPa	ER = 0.0028115 GPa	GR = 0.0022738 GPa	νR = − 0.38176
Hill	KH = 0.00053144 GPa	EH = 0.0031892 GPa	GH = 0.0031902 GPa	νH = − 0.50017