Significant Fatigue Life Enhancement in Multiscale Doubly-Modified Fiber/Epoxy Nanocomposites with Graphene Nanoplatelets and Reduced-Graphene Oxide

Abstract

We report the fatigue behavior of a novel multiscale fiberglass/epoxy composite modified with reduced-graphene oxide (rGO) and graphene nanoplatelets (GNP). A novel and cost-effective fabrication method based on vacuum assisted resin transfer molding (VARTM) method was used for manufacturing the composite laminates. Morphological and mechanical analysis of composites showed a successful dispersion of nano-fillers and a remarkable improvement in fatigue life of the nanocomposites. The experimental results revealed that all rGO concentrations resulted in a significant increase in fatigue life of the nanocomposites. These enhancements can be explained by the creation of stronger links between the nanoparticles fiberglass and epoxy. The experimental results also showed that lower concentrations of GNPs lead to an increase in fatigue life of nanocomposites; however, a decrease in their fatigue life can be seen at higher loadings.

Grafen Nanoplaka Katkılı Bazalt Elyaf Takviyeli Kompozit Boruların İç Yüzey Erozif Aşınma Direncinde Aşındırıcı Partikül Hızının Rolünün İncelenmesi

“…Kompozit uygulamalarda yaygın kullanılan cam elyaf takviyesine göre daha mukavemetli bir yapıya ulaşan bazalt elyaf takviyeli kompozit [27,28] borularda grafen takviyesinin aşınmaya karşı direnci daha üstün bir seviyeye ulaştırdığı görülmektedir. GNP/BETKB borularda ise BETKB borulara göre daha mukavemetli bir yapıya ulaştığı ve yorulmaya dayanımının da arttığı da belirtilmektedir [29,30]. Grafen nanoplaka ile güçlendirilen borudaki erozyon oranlarının güçlendirilmemiş boruya göre en yüksek erozyon direnci kazandığı testlerde 30 çarpma açısının etkili olduğu görülmüştür (Şekil 6).…”

Strengthening of Fibrous Composites with Nanoparticles

“…Rafiee et al [45][46][47] developed a procedure for manufacturing fiberglass plastics using NPs with simultaneous reinforcement of the matrix and fibers by VARTM. NPs were added to the composites in two steps: one for sizing the fabric, and the other for strengthening the matrix.…”

“…Glass mats were sized with a solution of a given composition using a spray gun inside a fume hood in order to ensure complete evaporation of the solvent. The use of NPs (CNTs, graphene, GO) has led to considerable improvement in the mechanical [45], thermophysical [46], and fatigue [47] properties of fiberglass.…”

A compendious review on fatigue properties of the bio‐nanocomposites

“…Though numerous reports show improvement in electrical, thermal, and mechanical properties of bio‐nanocomposites, [ 4 ] it is the fatigue property that makes them an excellent choice in various applications. [ 5 ] Further, it is an essential factor in design consideration to avoid fatigue failure, especially in applications having load‐bearing members subjected to cyclic loading like transportation. [ 6 ] However, even today, studies on improving the fatigue behavior are limited to reinforced polymer nanocomposites like carbon nanotubes or graphene nanosheets.…”