PSI - Issue 28

P. Santos et al. / Procedia Structural Integrity 28 (2020) 1816–1826 P. Santos/ Structural Integrity Procedia 00 (2019) 000–000

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stiffness (considering the dispersion both values are similar for 6C+2G and 4C+4G laminates). Finally, the bending strain is lower for full carbon laminates, and this property increases with the number of glass fibre layers. In fact, according to Wonderly et al. (2005), carbon fibres present higher modulus and ultimate stress, while the ultimate strain is lower than the values reported for glass fibres.

Fig. 2. Bending stress-strain curves for all configurations studied (strain rate of 2.84×10 -2 s -1 ).

Fibres breakage

2G

1 mm

1 mm

a)

b)

4G

1 mm

1 mm

c)

d) Fig. 3. Damage mechanisms for laminates: (a) 8C; (b) 6C+2G; (c) 4C+4G; (d) 8G.