high-velocity impact properties of multi-walled carbon nanotubes/e-glass fiber/epoxy anisogrid composite panels

This work reports the high-velocity impact response of multiscale anisogrid composite (agc) panels. the aim of the present study is to evaluate the influence of surface-modified multi-walled carbon nanotubes (s-mwcnts) at different s-mwcnts contents (0-0.5 wt.% at an interval of 0.1 wt.%) on the high-velocity impact responses of e-glass/epoxy agc. surface modification of mwcnts is confirmed by fourier-transform infrared (ftir) and thermogravimetric (tga) analyses. agc panels were fabricated via a manual filament winding technique. e-glass fiber roving and e-glass woven fabric are employed as reinforcing agents in ribs and skin, respectively. the impact test is done on the composite panels by a cylindrical projectile with a conical nose. the results showe that the highest enhancement in the impact characteristics is attributed to the panel containing 0.4 wt.% s-mwcnts. based on the analysis of fracture surfaces, enhanced interfacial fiber/matrix bonding is observed for the s-mwcnts loaded specimen. furthermore, the incorporation of mwcnts leads to the reduced damaged area and enhanced tolerance of damage.