Fully coupled thermo-magneto-electro-elastic properties of unidirectional smart composites with a piezoelectric interphase

Abstract

In the present study, the effect of PZT-5A piezoelectric interphase on the effective thermo-magneto-electro-elastic properties of CoFe2O4 piezomagnetic matrix composites reinforced with carbon fibers is investigated. In this type of three-phase smart composite, the unidirectional fiber is coated with the piezoelectric shell. To this end, the fully coupled thermo-magneto-electro-elastic constitutive relations are developed for a unit cell-based micromechanical model in conjunction with a proper representative volume element. The influences of piezoelectric interphase thickness on the effective properties of the unidirectional smart composite are extensively investigated at different carbon fiber volume fractions up to 70%. The results demonstrate that piezoelectric interphase can greatly affect the overall thermo-magneto-electro-elastic properties of the smart composites. For two-phase smart composites, the present predictions are found to be in close proximity with the Mori–Tanaka results, which validates the present model.

Polarization Parameters and Scaling Matter—How Processing Environment and Shape Factor Influence Electroactive Nanocomposite Characteristics

“…This decline in the piezoelectric and dielectric properties is due to the decrease in the number of charge carriers in the insulating polymer matrix [84]. As a solution for the above problems researchers have started to investigate three phase composites that consist of ferroelectric and conductive inclusions that are randomly distributed in an uniform polymer matrix [20,22,[106][107][108][109]. While many have demonstrated notable piezoelectric values [108,[110][111][112], processing technique, active filler surface morphology and size/shape inherently influence the electromechanical performance of the samples.…”

Acoustic insulation characteristics improvement of a thick CNT-reinforced doubly-curved shell by using GPLRC and MEE composite layers

“…Kattimani [26] proposed an optimal control of vibration in MEE plates by employing active constrained layer damping (ACLD) treatment. The effects of piezoelectric interphase on the thermo-MEE characteristics of coated unidirectional smart composites were studied by Haghgoo et al [27,28]. Vinyas [29] demonstrated that combining CNTs and MEE materials, due to the multi-physical coupling, can strengthen the vibratory characteristics of structures.…”

Effects of porosity, profile of thickness, and angular acceleration on the magneto-electro-elastic behavior of a porous FGMEE rotating disc placed in a constant magnetic field

“…Todays, functionally graded material (FGM) together with functionally graded intelligent materials such as functionally graded piezoelectric material (FGPM) and functionally graded magneto-electro-elastic (FGMEE) have ever-increasing usages in the various industries because of their excellent feature. [1][2][3][4][5] Also, magneto-electro-elastics as composites including both piezoelectric and magnetostrictive components exhibit better performance than single-phase smart material as a result of the magneto-electric interaction effect. 6 Consequently, as a new type of intelligent materials, FGMEEs are considered and employed as high performance sensors and actuators in smart structures.…”