Experimental Investigation of High-velocity Impact Effects on Composite Sandwich Panel with M-Type Lattice Core Made of Carbon Fiber Reinforced by Nano-SiO2

In this study, a composite sandwich panel with M-type lattice core made of carbon fiber reinforced by nano-SiO2 has been manufactured in order to achieve a laminate without any defect. Afterward, polyurethane foam has been injected into the core of the sandwich panel. The vacuum assisted resin transfer molding (VARTM) has been used in the present research. Eventually, The effects of parameters such as the amount of nano-SiO2 on the tensile strength of the laminate and high-velocity impact on the carbon fiber sandwich panel resistance were investigated. It was figured out that adding 1 to 3 wt% of nano-SiO2 into the carbon fiber had the most desirable effects on the enhancement of tensile strength. Also, in the high-velocity impact test, the results showed that by increasing 1 to 3 wt% of nano-SiO2 in the carbon fiber, the output velocity of the projectile decreases. On the other hand, the results showed when the projectile collides with the M-type core of the sandwich panel, the output speed will be zero, but when the projectile does not hit the core, output velocity will have a value. The output velocity of the projectile from the sandwich panel with the polyurethane foam is more less compared to sandwich panel without foam. The scanning electron microscope (SEM) images showed nano-SiO2 has been well distributed between the resin and the fibers.