E1 (GPa)

E2 (GPa)

GIC (kJ/m2)

GIIC (kJ/m2)

NFLS

(MPa)

SFLS

(MPa)

PARAM

(mm)

PARAM’

(mm) (2 shells)

39 ± 3

11.8 ± 1

0.36

1.2

22.5

57.3

0.025

0.15