Skip to Main content Skip to Navigation
Conference papers

Experimental characterization of a bi-dimensional array on negative capacitance piezo-patches for vibroacoustic control

Abstract : A recent technological revolution in the fields of integrated MEMS has finally rendered possible the mechanical integration of active smart materials, electronics and power supply systems for the next generation of smart composite structures. Using a bi-dimensional array of electromechanical transducers, composed by piezo-patches connected to a synthetic negative capacitance, it is possible to modify the dynamics of the underlying structure. In this study, we present an application of the Floquet-Bloch theorem for vibroacoustic power flow optimization, by means of distributed shunted piezoelectric material. In the context of periodically distributed damped 2D mechanical systems, this numerical approach allows one to compute the multi-modal waves dispersion curves into the entire first Brillouin zone. This approach also permits optimization of the piezoelectric shunting electrical impedance, which controls energy diffusion into the proposed semi-active distributed set of cells. Furthermore, we present experimental evidence that proves the effectiveness of the proposed control method. The experiment requires a rectangular metallic plate equipped with seventy-five piezo-patches, controlled independently by electronic circuits. More specifically, the out-of-plane displacements and the averaged kinetic energy of the controlled plate are compared in two different cases (open-circuit and controlled circuit). The resulting data clearly show how this proposed technique is able to damp and selectively reflect the incident waves.
Document type :
Conference papers
Complete list of metadata

Cited literature [10 references]  Display  Hide  Download
Contributor : Christine Froidevaux Connect in order to contact the contributor
Submitted on : Tuesday, July 17, 2018 - 9:35:13 AM
Last modification on : Thursday, January 13, 2022 - 12:00:21 PM
Long-term archiving on: : Thursday, October 18, 2018 - 12:22:20 PM


Files produced by the author(s)



Flaviano Tateo, Manuel Collet, Morvan Ouisse, Mohamed Ichchou, Kenneth A. Cunefare. Experimental characterization of a bi-dimensional array on negative capacitance piezo-patches for vibroacoustic control. SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring,, Jan 2013, San Diego, United States. pp.1 - 6, ⟨10.1117/12.2009604⟩. ⟨hal-01021964⟩



Les métriques sont temporairement indisponibles