title: A study on the dispersions of piezoelectric plate with laser ultrasound measurement and theoretical modeling.
abstract: 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.
authors.affiliation: 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>
authors.forename: Che-Hua
authors.initials: CH
authors.lastname: Yang
authors.forename: Kun-Yi
authors.initials: KY
authors.lastname: Tsai