Hybrid effect of nanoparticles presence on low‐velocity impact resistance in sandwich panels

Abstract

Considering the massive employment of sandwich panels in multifarious applications, numerous research studies have been conducted on their impact resistance enhancement, one of which, is via simultaneous nanoparticles incorporation including various amounts of silica nanoparticles, clay nanoparticles and carbon nanotubes (CNTs) in to sandwich panels, composed of two glass fiber epoxy composite face sheet and polyvinyl chloride core to render them reinforced. The research objective is to experimentally scrutinize the behavior of nano reinforced sandwich panels under low-velocity impact test conducted at different energy levels. The damaged areas of the panels were investigated via scanning electron microscopy, the result of which demonstrated that the impact resistance of the sandwich panel can be improved by the integration of nanoparticles. The incorporation of 0.3% of CNT, 1% of nano clay, and 3% of nano silica enhanced maximum contact force by 18.6%, compared to the unreinforced equivalent.Increasing the weight fraction of both CNTs and silica nanoparticles, made contribution to sandwich panels impact resistance increase. The presence of nano clay up to 1 wt% improved the maximum contact force; however, the integration of it into matrix more than 1 wt% led to the reduction of maximum contact force, thus weakened the impact resistance of sandwich panel.

Hybrid reinforced effect of long carbon fiber and short glass fiber on polycarbonate foams

“…For example, by creating a microporous structure during the processing operations, PC foams can be advantageous for many structuralize and/or functionalize applications such as thermal insulation, sound absorption, separation media, and so forth. However, the cellular structure was inevitably influenced and even decided by the foaming processing, resulting in different properties of the foamed part 18–21 . Similar to other polymers, PC foams can generally be fabricated via the three most popular foaming operations, that is, batch, extrusion, and injection molding foaming operations, and meanwhile, a blowing agent, which possibly involves physical blowing agents (supercritical CO 2 , nitrogen, and water) and chemical blowing agents, is used for releasing gas and generating the porous structure.…”

Effect of interface temperature on low‐velocity impact response of injection over‐molded short/continuous fiber reinforced polypropylene composites

“…Sandwich composite structures with continuous fiber composite face sheets have been found very efficient by the aerospace and automotive industries for impact applications because of their high bending stiffness to mass ratio and impact energy absorption. [11][12][13][14][15] Zhang et al 11 investigated drop mass impact and compression tests after impact on sandwich composite structure with honeycomb core and found a decrease of compression strength up to 25%-30% compared with undamaged sandwich composite. The sandwich composites are subjected to fiber-metal skin delamination, foam core cracking, and skin-core interface debonding.…”

“…The sandwich composites are subjected to fiber‐metal skin delamination, foam core cracking, and skin‐core interface debonding 12 . Emamieh et al 13 enhanced the impact contact force of sandwich composites containing polyvinyl chloride core and glass/epoxy composite face sheets up to 18.6% by dispersing 0.3% carbon nanotubes, 1% nano clay, and 3% nanosilica particles in the epoxy matrix. Moghaddam et al 14 observed a significant improvement in impact resistance of sandwich composite made of hybrid carbon/glass fabric and epoxy face sheets and rigid polymer foam core by embedding the shape memory alloy wires between the face sheet layers.…”

Low‐velocity impact response of halloysite nanotube reinforced glass/epoxy multi‐scale composite. Part 1: Dynamic loading performance

“…Addition of filler materials at nano and micro levels into epoxy resin seems a reasonable approach to improve mechanical performance of fiber reinforced composite materials. [ 11–13 ]…”

“…Addition of filler materials at nano and micro levels into epoxy resin seems a reasonable approach to improve mechanical performance of fiber reinforced composite materials. [11][12][13] Fiber reinforced composites are promising materials for aeronautical, automotive, marine, and construction applications due to their high strength and module, perfect rigidity, high corrosion resistance, and low density. [14] The performance of glass fiber reinforced composites varies depending on the type of glass fiber, matrix materials, and matrix modifier fillers.…”