Generating surface acoustic wave on a non-metallic plate using a piezoelectric actuator with a uniform electrode design
Journal
Proceedings of SPIE - The International Society for Optical Engineering
Journal Volume
12946
ISBN (of the container)
9781510671980
ISBN
9781510671980
Date Issued
2024-05-09
Author(s)
DOI
10.1117/12.3010083
Abstract
This study aims to develop a new type of piezoelectric actuator that can generate surface acoustic waves (SAWs) on a piezoelectric ceramic and non-metallic composite. In the structural design, this study employs a composite SAW device coupling a piezoelectric plate with uniform electrodes and attaches it to an 84mm by 53mm rectangular non-metallic substrate. The piezoelectric actuator and the non-metallic substrate are coupled with a solid coupler to transfer acoustic vibrations to the substrate, thus exciting antisymmetric Lamb waves. Lamb waves refer to elastic propagating in a solid plate with doubly free boundaries, for which displacements occur both in parallel and perpendicular to the direction of wave propagation. In the driving method, we design a SAW composite that can generate antisymmetric Lamb waves in the frequency range between 200 kHz and 400 kHz. Finally, experimental studies are conducted to verify this SAW device's design excited the surface acoustic waves and the resonate frequency's wavelength.
Event(s)
Active and Passive Smart Structures and Integrated Systems XVIII 2024, Long Beach, 25 March 2024 through 28 March 2024, Code 199775
Subjects
acoustic coupling
lamb wave
piezoelectric actuator
piezoelectric vibrator
surface acoustic wave (SAW)
SDGs
Publisher
SPIE
Description
Article number 129461C
Type
conference paper