Ballistic impact behavior of carbon nanotube and nanosilica dispersed resin and composites

Abstract

Experimental studies are presented on the ballistic impact behavior of nanoparticle dispersed materials viz. symmetric balanced cross-ply laminates made using unidirectional E-glass fabric with epoxy resin and neat epoxy resin. The nanoparticles used are nanosilica and multi-walled carbon nanotube for polymer matrix composites and nanosilica for epoxy resin. For comparison, studies are carried out on symmetric balanced cross-ply E-glass/epoxy and neat epoxy resin without nanoparticles. Effect of nanoparticle dispersion on ballistic limit velocity, V50 and energy absorbed has been studied. It is observed that V50 can be enhanced up to 6.3% for polymer matrix composites and up to 7.3% for neat resin on addition of nanoparticles. Also, energy absorbed can be increased up to 13.0% for polymer matrix composites and up to 15.2% for neat resin on addition of nanoparticles. Damage and energy absorbing mechanisms for different types of materials studied is also presented. Further, it is observed that the damage size on the target around the point of impact decreases on addition of nanoparticles. Quantitative data are given for high velocity impact behavior of the five types of specimens studied.

High velocity impact behavior of Kevlar/rubber and Kevlar/epoxy composites: A comparative study

“…The ballistic performance of neat and coated fabrics was investigated and a 45-59% increase was observed in the energy absorption for different combinations of the neat and coated fabrics compared to the all-neat system. Majumdar and Roy [42] investigated the impact performance of natural rubber (NR) coated Kevlar fabric. Fabrics were coated with different concentrations of NR solutions and were produced with different add-on percentages.…”

Alumina nanoparticle filled epoxy resin: High strain rate compressive behavior

“…Damage and energy absorbing mechanisms of neat resins under high strain rate loading include shear yielding, shear plugging, and formation of ring and radial cracks. Additional damage and energy absorbing mechanisms with the dispersion of nanoparticles into resins are nanoparticle debonding and void formation, plastic void growth and matrix shear banding . Consequently, the compressive strength of resins can be enhanced by the dispersion of nanoparticles.…”

“…Resins reinforced with nanoparticles are therefore found to yield superior mechanical properties compared with those reinforced with microparticles. The mechanical behavior of nanoparticles and nanoparticle dispersed resins has been extensively studied including stiffness, toughness, hardness, scratch resistance, damping, creep characterization, plate impact behavior, and ballistic impact behavior . However, only limited studies are available in literature on the high strain rate behavior of particle filled resins .…”

Nanoparticle dispersed resins and composites under quasi-static loading: Shear plugging behavior

“…In recent years, nanoparticles have been used as reinforcing materials in resins and composites in order to enhance their mechanical properties. The mechanical behavior of nanoparticles and nanoparticle dispersed resins has been studied including stiffness , toughness , hardness , scratch resistance , damping , plate impact behavior , and ballistic impact behavior . Carbon nanotube (CNT) additives are finding increasing applications as reinforcements in resins and composites .…”

“…Carbon nanotube (CNT) additives are finding increasing applications as reinforcements in resins and composites [10][11][12][13]. These studies [1][2][3][4][5][6][7][8][9][10][11][12][13] under quasi-static loading indicate that reinforcing resins and composites with nanoparticles enhances their mechanical properties.…”