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        Compression after Impact and Charpy Impact Characterizations of Glass Fiber/Epoxy/MWCNT Composites

        Özgür Demircan,Kemal Kadıoğlu,Pınar Çolak,Erdinç Günaydın,Mustafa Doğu,Neslihan Topalömer,Volkan Eskizeybek 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8

        In this study, glass fiber/epoxy resin/multi-walled carbon nanotubes (MWCNTs) were used to fabricate hybridcomposites with biaxial warp-knitted fabrics. The biaxial warp-knitted fabrics were grafted with various amounts ofMWCNTs and the hybrid composites were fabricated using the resin transfer molding (RTM) method, subsequently. Thefabricated samples were subjected to compression after impact and Charpy impact tests. The hybrid composites exhibitedhigher compression after impact modulus and strength with 26 % and 17 % compared to the samples without nanotubes,respectively. Moreover, the MWCNTs integrated specimens showed 17 % improvement of Charpy impact strength againstspecimens without carbon nanotubes in 0odegree direction. Fracture surface analysis revealed lower number of cracks andshorter crack propagation lengths in the MWCNTs reinforced specimens. The improvement in mechanical properties of thehybrid composites can most likely be attributed to an increase in interfacial adhesion due to the presence of the carbonnanotubes.

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