Generating surface acoustic wave on a non-metallic plate using a piezoelectric actuator with a uniform electrode design

Yu-Yi Chang; Yu-Hsiang Hsu; Chih-Kung Lee

doi:10.1117/12.3010083

9 May 2024 Generating surface acoustic wave on a non-metallic plate using a piezoelectric actuator with a uniform electrode design

Yu-Yi Chang, Yu-Hsiang Hsu, Chih-Kung Lee

Author Affiliations +

Proceedings Volume 12946, Active and Passive Smart Structures and Integrated Systems XVIII; 129461C (2024) https://doi.org/10.1117/12.3010083
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

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.

Conference Presentation

Citation Download Citation

Yu-Yi Chang, Yu-Hsiang Hsu, and Chih-Kung Lee "Generating surface acoustic wave on a non-metallic plate using a piezoelectric actuator with a uniform electrode design", Proc. SPIE 12946, Active and Passive Smart Structures and Integrated Systems XVIII, 129461C (9 May 2024); https://doi.org/10.1117/12.3010083

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