On the High-Velocity Impact Behavior of Anisogrid-Stiffened Composite Plates Containing Multiwalled Carbon Nanotubes

Grid-stiffened composite (GSC)structures, due to the unique structure have excellence properties such as low strength to weight ratio, low stiffness to weight ratio, high energy absorption capability and corrosion resistance. The present study represents the influence of multi-walled carbon nanotubes that functionalized with carboxyl groups (MWCNT-COOH) on the high velocity impact behavior of ansiogrid composite plates. The epoxy/MWCNTs with various carbon nanotubes contents (0, 0.1, 0.25 and 0.4 wt. %) were used as the matrix of GSC structures. The high velocity impact test by cylindrical projectile having conical nose was performed on these specimens. The results of high velocity impact test demonstrated that the ballistic limit and energy absorption with the addition of 0.4 wt. % of MWCNTs increased by 11% and 22%, respectively. The addition of MWCNTs to the grid composite plates increased the damage tolerance considerably, exhibiting lower damage size

Keywords:

Ansiogrid composite plates , High velocity impact test , Carbon nanotubes , Ballistic limit , Energy absorption