ESTGV - DEMGI - Artigo em revista científica, não indexada ao WoS/Scopus
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- Mixed mode interlaminar fracture of carbon nanotubes enhanced epoxy/glass fiber compositesPublication . Silva, H.; Ferreira, J. A. M.; Costa, J.D.M.; Capela, C.Present paper studied the improvement of the fracture toughness under mixed mode loading obtained by using carbon nanotubes reinforcement in fiber glass mats/epoxy laminates. Mixed-mode bending tests were performed considering different loading ratios GII/GI. Laminates were manufactured using the epoxy resin Biresin® CR120 reinforced with fiber glass triaxial mats ETXT 450 and multiwalled carbon nanotubes with 98% of carbon. It was observed that the total fracture toughness increases linearly with the mode II loading component and that linear mixed-mode fracture criteria reproduces the GI versus GII relationship. The incorporation of small quantity, up to 0.5%, of carbon nanotubes into matrix improves significantly mixed-mode fracture toughness.