A study on the dispersions of piezoelectric plate with laser ultrasound measurement and theoretical modeling.
This research is focused in the measurement and modeling for the dispersion relations of Lamb waves propagating in LiNbO(3) and LiTaO(3) plates. A theoretical model based on a stiffness matrix method with recursion computation algorism is used to provide numerical calculations for the dispersion relations. Also, a dry, noncontact laser ultrasound technique is used to measured dispersion multi-mode dispersion relations. For all the experiments, the measured dispersion curves show good agreement with the theoretical calculation, indicating the reliabilities in the measurement and modeling.
Yang
Che-Hua
CH
Department of Mechanical Engineering, Chang Gung University, 259 Wen-Hua 1st Road, Kwei-Shan, Taoyuan, Taiwan, ROC. yang@mail.cgu.edu.tw <yang@mail.cgu.edu.tw>
Tsai
Kun-Yi
KY