PSI - Issue 14

N Jagannathan et al. / Procedia Structural Integrity 14 (2019) 864–871 Author name / Structural Integrity Procedia 00 (2018) 000–000

870

7

0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1

Normalised axial Young's modulus, (E xx /E xx0 )  yy =0  xx /  yy =3  xx /  yy =1

0

0.5

1

1.5

Axial strain (  xx ), %

Fig. 4. Normalised axial modulus degradation in a [0 o /90 o ]

s CFRP laminate under different bi-axial static loading,

1

0.6 Normalised in-plane shear modulus (G xy /G xy0 )  yy =0  xx /  yy =3  xx /  yy =1 0.7 0.8 0.9

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 0.5

Axial strain (  xx ), %

Fig. 5. Normalised shear modulus degradation in a [0 o /90 o ]

s CFRP laminate under different bi-axial static loading,

1

0.6 Normalised major Poisson's ratio (  xy /  xy0 )  yy =0  xx /  yy =3  xx /  yy =1 0.7 0.8 0.9

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 0.5

Axial strain (  xx ), %

Fig. 6. Normalised Poisson’s ratio degradation in a [0 o /90 o ]

s CFRP laminate under different bi-axial static loading,