Effect of the fiber reinforcement on the low energy impact behavior of fabric reinforced resin matrix composite materials

Abstract

The influence of the fiber used as reinforcement in resin matrix composite materials submitted to repeated low energy impacts is analyzed. The aramid, glass and carbon fiber composites were submitted to drop weight tests from 0.5m and from 1m. The number of impact events necessary to cause failure was recorded, and the fracture characteristics of each composite were analyzed by optical microscopy and X-rays radiography. The results obtained showed that carbon fiber composites have better performance than the glass and aramid composites. This behavior was partially attributed to the higher elastic energy absorption of carbon fibers that delays the propagation of delamination, and fiber breakage. The failure mode of glass fiber composites was dominated by the higher number of glass fibers per surface area of the composites. The worst behavior shown by aramid composites was attributed to the intrinsic anisotropy of aramid fibers

Effect of Continuous Micro Reinforcement and Processing Parameters on the Low-Velocity Impact Behaviour of Polymer Composite Materials

“…Nevertheless, their damage propagation energy amount and ductility index was the uppermost. This behaviour was already reported previously [1] and is partially attributed to the higher elastic energy absorption of carbon fibers that delays the propagation of delamination, and fiber breakage. Lower tenacity obtained on hybrid laminates was attributed to both lack of resin local rinse saturate and to the intrinsic anisotropy of para-aramid fibers.…”

“…For the carbon composite, the front side has a rounded domed like aspect, indicating a homogeneous deformation. This failure type is indicative of matrix crushing, not to delamination [1]. The rear side fracture was, however, not uniform, showing preferred directions of failure.…”

“…The impact energy was calculated according to eq.1, corresponding to 33.5J. (1) where E [J] is the potential energy of impactor prior to drop; C E is the specified ratio of impact energy to specimen thickness, 6.7J/mm; h [mm] is the nominal thickness of specimen.…”

Pristine and amino functionalized carbon nanotubes reinforced glass fiber epoxy composites

“…The epoxy polymer is preferred due to its superior thermal, mechanical and electrical properties, dimensional stability and chemical resistance [3]. In-order to improve the mechanical performance of the conventional FRP composites much effort has been done in the past by modifying the polymer matrix with nanofillers such as graphene, carbon nanotubes (CNTs) and nanoclay [4][5][6][7][8][9][10].…”

Enhanced microwave shielding and mechanical properties of multiwall carbon nanotubes anchored carbon fiber felt reinforced epoxy multiscale composites

“…CF, glass fibers, aramid fiber (Kevlar fibers), etc. (Barrau et al 2003;de Morais et al 2003) have been used with epoxy resin as matrix in structurally strong composite materials for commercial applications such as in aerospace industry.…”