Abstract
This investigation experimentally examines the role of multi-walled carbon nanotubes (MWCNTs) on the tension (on-axis tension test) and in-plane shear (off-axis tension test) behaviors of carbon fiber reinforced polymer composites. Both pristine and chemically functionalized MWCNTs were utilized with four different loadings: 0.1, 0.5, 1.0, and 1.5 wt% of epoxy. Our investigation showed that with 1.5 wt% functionalized MWCNTs, failure strain, ultimate strength, and toughness of the off-axis tension test are improved by 39%, 51%, and 121%, respectively. On the contrary, limited improvements were observed for the on-axis tested samples with functionalized or pristine MWCNTs.
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