SMART PIEZO-ENABLED GLASS-FABRIC-REINFORCED COMPOSITE STRUCTURE: EXPERIMENTS AND FINITE-ELEMENT MODELING

Jerold John Britto J.; Vasanthanathan A.; Karthik Vinayaga K.; Senthil Maharaj P. S. R.

doi:10.17222/mit.2024.1269

Jerold John Britto J. Department of Mechanical Engineering, Ramco Institue of Technology, Rajapalayam, Tamilnadu, India
Vasanthanathan A. Department of Mechanical Engineering, Mepco Schlenk Engineering, Sivakasi, Tamilnadu, India
Karthik Vinayaga K. Department of Mechanical Engineering, Mepco Schlenk Engineering, Sivakasi, Tamilnadu, India
Senthil Maharaj P. S. R. Department of Mechanical Engineering, AAA College of Engineering and Technology, Sivakasi, Tamilnadu, India

DOI: https://doi.org/10.17222/mit.2024.1269

Keywords: piezoelectric, polyvinylidene fluoride, piezocomposite, glass-fiber-reinforced polymer, finite element method, ANSYS®

Abstract

This paper deals with an experimental and finite-element investigation of smart polyvinylidene fluoride (PVDF) embedded with a glass-fabric-reinforced polymer (GFRP) beam structure under vibration. PVDFs are well known stretchy polymer that process the properties of both piezoelectric and pyroelectric materials. An LDT0-028K PVDF polymer film is proposed in the present paper. Glass-fiber-reinforced polymer is a lightweight composite material having a high specific strength and specific stiffness, due to which it has a wide range of applications in the field of smart composite structures. GFRP laminates and beam structures are fabricated in the present investigation through a vacuum-assisted resin-infusion process (VARIP). Mechanical characterization in accordance with ASTM standards were also carried out for the purpose of the estimation of uni-directional mechanical properties of GFRP, which are a pre-requisite for finite-element simulations. Both the experiments and the finite-element modelling were carried out for the smart piezo composite beam structure under forced vibration conditions. The finite-element computations were incorporated in the present study using ANSYS^® 16.0 Mechanical APDL. The results of the experimental and FEM investigations show a deviation of around 6.2 %, with the experimental values validating the FEM analysis. Based on the harmonic response of the smart piezo-composite beam, a micro-energy harvesting study was established with reference to the varying frequency and voltage.

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