Title :
Guided waves propagating in a piezoelectric plate immersed in a conductive fluid
Author :
Yang, Che-Hua ; Shue, C.J.
Author_Institution :
Dept. of Mech. Eng., Chang Gung Univ., Taoyuan, Taiwan
Abstract :
In this research we report theoretical model and experimental measurements for the leaky Lamb wave propagation behaviors in a X-cut lithium niobate immersed in a conductive fluid. Starting with wave equations, a partial wave analysis procedure is taken for the modeling of plane wave reflection coefficient, which characterizes the dispersion relation of piezoelectric plate immersed in a dielectric fluid. Fluid conductivity is modeled by modeling the fluid as lossy dielectric media. Bulk wave ultrasonic transducers with V-shape arrangement are used in this particular experiment, running in pitch-catch manor. Close comparison with fairly well agreement between theory and measurements is obtained
Keywords :
acoustic wave propagation; lithium compounds; piezoelectric materials; surface acoustic waves; LiNbO3; V-shape; X-cut lithium niobate; bulk wave ultrasonic transducer; conductive fluid; dielectric fluid; dispersion relation; guided wave propagation; leaky Lamb wave; lossy dielectric medium; partial wave analysis; piezoelectric plate; pitch-catch operation; plane wave reflection coefficient; wave equation; Acoustic measurements; Acoustic propagation; Acoustic waves; Dielectric losses; Dielectric measurements; Lithium niobate; Partial differential equations; Piezoelectric materials; Stress; Surface acoustic wave devices;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.762177
