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A study on the dispersions of piezoelectric plate with laser ultrasound measurement and theoretical modeling.

作者信息

Yang Che-Hua, Tsai Kun-Yi

机构信息

Department of Mechanical Engineering, Chang Gung University, 259 Wen-Hua 1st Road, Kwei-Shan, Taoyuan, Taiwan, ROC.

出版信息

Ultrasonics. 2006 Dec 22;44 Suppl 1:e807-11. doi: 10.1016/j.ultras.2006.05.110. Epub 2006 Jun 6.

DOI:10.1016/j.ultras.2006.05.110
PMID:16793091
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.

摘要

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