Design and evaluation of piezoelectric periodic structures for noise and vibration control of panels

Abstract

This research proposal aims to study the attenuation of structural vibration and irradiated noise of reinforced panel of aeronautical interest with control inspired on electro-mechanical methamaterial methodologies. A challenge in the acoustic/elastic metamaterials research field is the development of the next generation of structures with adaptive and self-regulating dispersion properties without requiring structural modifications. The introduction of shunted piezoelectric materials into metastructures has the potential to provide adaptive properties by adjusting different electrical circuit parameters. The tunable characteristics of the shunted piezoelectric material allow the formation of bandgaps over a desired frequency range. Although current smart metamaterials present some level of tunability, many scientific and technological challenges remain and are expected to be tackled in this project, such as broadening the subwavelength bandgaps and assessment and exploitation of variability and uncertainties in the design and construction of metastructures. The research will be conducted at the Aeronautics Institute of Technology (ITA). (AU)