Smart damping of laminated fuzzy fiber reinforced composite shells using 1–3 piezoelectric composites

Abstract

This paper deals with the investigation of active constrained layer damping (ACLD) of smart laminated continuous fuzzy fiber reinforced composite (FFRC) shells. The distinct constructional feature of a novel FFRC is that the uniformly spaced short carbon nanotubes (CNTs) are radially grown on the circumferential surfaces of the continuous carbon fiber reinforcements. The constraining layer of the ACLD treatment is considered to be made of vertically/obliquely reinforced 1–3 piezoelectric composite materials. A finite element (FE) model is developed for the laminated FFRC shells integrated with the two patches of the ACLD treatment to investigate the damping characteristics of the laminated FFRC shells. The effect of variation of the orientation angle of the piezoelectric fibers on the damping characteristics of the laminated FFRC shells has been studied when the piezoelectric fibers are coplanar with either of the two mutually orthogonal vertical planes of the piezoelectric composite layer. It is revealed that radial growth of CNTs on the circumferential surfaces of the carbon fibers enhances the attenuation of the amplitude of vibrations and the natural frequencies of the laminated FFRC shells over those of laminated base composite shells without CNTs.

Review on micromechanics of nano‐ and micro‐fiber reinforced composites

“…Polymer nanocomposites embedded with nanoparticles such as CNTs, graphene and their derivatives, nanoclays, and silica nanoparticles have attracted a large amount of attention to achieve more improved thermomechanical properties than conventional composites . Among all others, CNTs have been emerged as the ideal candidates for multifarious applications due to their remarkable thermoelastic and physical properties.…”

Temperature effect on free vibration response of a smart multifunctional sandwich plate

“…Attaching piezoelectric patches on passive system structures can make structural responses applicable for self-controlling and self-monitoring smart systems. Depending on their passive structures and piezoelectric designs, these smart systems can also offer other engineering applications such as damping vibrations [1–3], energy harvesting [4], fluid delivery [5,6] and damage detection [7]. However, due to the brittle behavior of piezoelectric materials, they should be attached to softer passive structures which can be one of the main objectives in the design of such smart structures.…”

Stress distributions in nanocomposite sandwich cylinders reinforced by aggregated carbon nanotube

“…It has been demonstrated that adding a small amount of CNTs in a polymeric matrix can considerably improve the mechanical properties of the resulted nanocomposite . Also, some research works have presented the successful use of piezoelectric fiber in the smart damping of CNTRC structures .…”