Influence of aramid fibers on the mechanical behavior of a hybrid carbon–aramid–reinforced epoxy composite

Abstract

This article is focused on the study of the contribution of aramid fibers in a hybrid carbon-aramid fiber twill weave used to reinforce epoxy resin. To evaluate the influence of the aramid fibers, a comparative study between carbon and carbon-aramid woven-reinforced composites, considering the mechanical behavior of both materials under several loading conditions, is performed. The tests used in this study are meant to analyze the effect of aramid reinforcements on the composite stiffness, strength, impact, and fracture performance. Higher values of energy absorption and fracture toughness were exhibited by the carbon-aramid composite. The mechanical tests performed indicated that the aramid phase present in the hybrid carbon-aramid composite induced an important enhancement on the impact (37.9% in energy absorption) and fracture resistance (12.7% for fracture initiation and 43% for steady state regime), compared to small reductions on the material stiffness. In addition, the ultimate strain and the through thickness compression strength were favorably affected, with an increase up to 19.5% and 8.3%, respectively, by the presence of aramid fiber that presents a more ductile response with respect to the carbon reinforcement.

Recent studies on modified cellulose/nanocellulose epoxy composites: A systematic review

“…Since the 1960s, the use of synthetic fibers as reinforcement in epoxy resin composites increased dramatically due to its outstanding mechanical properties (Jawaid & Khalil, 2011). Epoxy composites have been produced with a variety of reinforcements including carbon fibers (Almeida, Ornaghi, Lorandi, Bregolin, & Amico, 2017), glass fibers (Sathishkumar, Sathishkumar, & Naveen, 2014), carbon/glass hybrids (Monticeli, Ornaghi, Woorwald, & Cioffi, 2019), carbon/aramid hybrids (Pincheira, Canales, Medina, Flores, & Ferna, 2018).…”

Research Progress on Interlaminar Failure Behavior of Fiber Metal Laminates

“…In the 1980s, aramid fiber reinforced aluminum alloy laminates (ARALL) [16,17] were first implemented as wing skin of Fokker Aircraft's F-27. Subsequently, Douglas Company of the United States began to use the ARALL laminate to manufacture the cargo door of C-17 large military transport helicopter, and the weight was reduced by 26%.…”

Flexural progressive damage and failure behavior of carbon-aramid/epoxy hybrid woven composites

“…32,33 For Specimen B, significant matrix cracks and delamination are found at the bottom as shown in Figure 9(b). Meanwhile, AE signals with high-amplitude and high-energy are generated, as shown in Figures 5(b) and 6(b). Afterward, a third loading is performed (reaching point C).…”

“…4,5 Introducing aramid fiber to carbon fiber-reinforced composites can improve the stiffness of aramid fiber composites and enhance the toughness of carbon fiber composites, thus effectively expanding the application range of composites. 6…”