Efficient excitation of transverse vibrational modes using improved configurations of PFCs connected to an isotropic plate
Journal
Composite Structures
Journal Volume
265
Start Page
113718
ISSN
02638223
Date Issued
2021
Author(s)
Abstract
In this work, we investigate efficient excitations of transverse (out-of-plane) vibrations of isotropic rectangular plates using piezoelectric fiber composites (PFCs) by experimental measurement. Four PFCs are separately bonded on a rectangular plate with four configured electrode connections to excite transverse vibration of the plate. The proposed configurations of the PFCs, including placements and electrode connections, are inspired by efficient transverse excitations of piezoelectric rectangular plates, whose mode shapes can be divided into four groups and whose electromechanical coupling efficiency can be largely improved by designs of partial electrodes. To visually demonstrate the excitation efficiency, an amplitude-fluctuation electronic speckle pattern interferometry (AF-ESPI) measurement technique is set up to obtain full-field transverse mode shapes. Other than AF-ESPI, a laser Doppler vibrometer (LDV) displacement sensing system is employed to investigate the excitation performances of the PFCs according to resonant frequencies with emphasis on the influences of the measured nodal lines of the plate. The experimental results presented in this study indicate that the excitation efficiency of the transverse vibrations in flexible structures can be improved by bonding distributed PFCs with configured electrode connections. In addition, we show that the vibrations of isotropic rectangular plates can be related to those of piezoelectric rectangular plates, from the experimental modal excitation point of view.
Subjects
Amplitude-fluctuation Electronic Speckle Pattern Interferometry
Configured Electrode
Efficient Excitation
Mode Shape
Piezoelectric Fiber Composite
Transverse Vibration
Efficiency
Electrodes
Flexible Structures
Interferometry
Laser Doppler Velocimeters
Laser Excitation
Natural Frequencies
Plates (structural Components)
Speckle
Vibrations (mechanical)
Amplitude Fluctuation Electronic Speckle Pattern Interferometry
Configured Electrode
Efficient Excitation
Electrode Connections
Isotropic Rectangular Plates
Mode Shapes
Piezoelectric
Piezoelectric Fiber Composites
Rectangular Plates
Transverse Vibrations
Piezoelectricity
Publisher
Elsevier Ltd
Type
journal article