Contribution of carbon nanotubes to vibration damping behavior of epoxy and its carbon fiber composites

Abstract

The main objective of this study was to investigate contribution of the non-functionalized multi-walled carbon nanotubes on the vibration damping behavior of first neat epoxy resin and then unidirectional and bidirectional continuous carbon fiber reinforced epoxy matrix composites. Epoxy/carbon nanotubes nanocomposites were produced by ultrasonic solution mixing method, while the continuous carbon fiber reinforced composite laminates were obtained via resin-infusion technique. Vibration analysis data of the specimens were evaluated by half-power bandwidth method; and the mechanical properties of the specimens were determined with three-point bending flexural tests, including morphological analyses under scanning electron microscopy. It was generally concluded that when even only 0.1 wt% carbon nanotubes were incorporated into neat epoxy resin, they have contributed not only to the mechanical properties (flexural strength and modulus), but also to the vibration behavior (damping ratio) of the epoxy. When 0.1 or 0.5 wt% carbon nanotubes were incorporated into continuous carbon fiber reinforced epoxy matrix composites, although they have no additional contribution to the mechanical properties, their contribution in terms of damping ratio of the composites were significant.

Enhancement of vibrational characteristics of rotating CFRP composite tapered plates reinforced by graphene nanoparticles

“…They found that increasing the CNT content in CFRP composites enhanced the damping ratio. Avil et al 24 found that flexural strength and modulus improved at only 0.1 weight percent of CNT reinforcement, but that improvements stopped at 0.5 weight percent CNT. According to Rafiee et al, 25 the addition of graphene nanoplatelets increased the damping of epoxy composite and resulted in better vibration behavior for the nanocomposite.…”

Soft polymers dynamic characterisation using sandwich theory

“…This method stands out compared to the others when being applied to frequencies up to 5000 Hz, and it has been extensively used to estimate the dynamic properties of a wide range of materials. For example, Allahverdizadeh et al 13 characterises the properties of a sandwich beam with an electrorheological fluid layer, Avil et al 14 investigated the contribution of carbon nanotubes to vibration damping of composite beams, Selvaraj and Ramamoorthy 15 analysed the dynamics of laminated composite sandwich beams containing carbon nanotubes reinforced magnetorheological elastomer, and Han and Yu 16 studied the effect of interfacial properties on the damping performance of steel-polymer sandwich cantilever beam composites.…”

Enhancement of out-of-plane mechanical properties of carbon fiber reinforced epoxy resin composite by incorporating the multi-walled carbon nanotubes

“…Cheng et al [16] studied the effect of carbon nanotube buckypapers (CNTBP) on the flexural properties of laminated FRP and quoted that CNTBP increases flexural properties. Avil et al [17] studied the effect of the CNTs on the damping behavior of epoxy and CFRP composite. Yourdkhani et al [18] were manufactured CFRP composite by resin film infusion (RFI) process.…”