Antisymmetric flexural modes propagating along apex of piezoelectric wedges

Wen Chih Wang; Che Hua Yang

doi:10.1143/JJAP.46.5939

Antisymmetric flexural modes propagating along apex of piezoelectric wedges

Wen Chih Wang^*, Che Hua Yang

^*Corresponding author for this work

National Taipei University of Technology

Research output: Contribution to journal › Journal Article › peer-review

5 Scopus citations

Abstract

This study is focused on the propagation behaviors of antisymmetric flexural (ASF) modes propagating along the apex of piezoelectric wedges. The dispersion behavior of the ASF modes in isotropic wedges attracts many studies. However, for more complex materials such as piezoelectrics, the propagation behaviors of the ASF modes are not studied on the basis of the anisotropy and piezoelectric effects. The purpose of this study is to investigate the behaviors of the ASF modes propagating along the apex of piezoelectric wedges with a combined numerical/experimental study based on finite element simulations and laser ultrasound measurements. Wedge samples are prepared from lithium niobate (LiNbO₃) wafers. The phase velocities of the ASF modes as a function of propagation angle and their relation with Rayleigh wave speeds are characterized.

Original language	English
Pages (from-to)	5939-5943
Number of pages	5
Journal	Japanese Journal of Applied Physics
Volume	46
Issue number	9 A
DOIs	https://doi.org/10.1143/JJAP.46.5939
State	Published - 07 09 2007
Externally published	Yes

Keywords

ASF mode
Finite element method
Laser ultrasound technique
Lithium niobate
Piezoelectric

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10.1143/JJAP.46.5939

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abstract = "This study is focused on the propagation behaviors of antisymmetric flexural (ASF) modes propagating along the apex of piezoelectric wedges. The dispersion behavior of the ASF modes in isotropic wedges attracts many studies. However, for more complex materials such as piezoelectrics, the propagation behaviors of the ASF modes are not studied on the basis of the anisotropy and piezoelectric effects. The purpose of this study is to investigate the behaviors of the ASF modes propagating along the apex of piezoelectric wedges with a combined numerical/experimental study based on finite element simulations and laser ultrasound measurements. Wedge samples are prepared from lithium niobate (LiNbO3) wafers. The phase velocities of the ASF modes as a function of propagation angle and their relation with Rayleigh wave speeds are characterized.",

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AU - Yang, Che Hua

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AB - This study is focused on the propagation behaviors of antisymmetric flexural (ASF) modes propagating along the apex of piezoelectric wedges. The dispersion behavior of the ASF modes in isotropic wedges attracts many studies. However, for more complex materials such as piezoelectrics, the propagation behaviors of the ASF modes are not studied on the basis of the anisotropy and piezoelectric effects. The purpose of this study is to investigate the behaviors of the ASF modes propagating along the apex of piezoelectric wedges with a combined numerical/experimental study based on finite element simulations and laser ultrasound measurements. Wedge samples are prepared from lithium niobate (LiNbO3) wafers. The phase velocities of the ASF modes as a function of propagation angle and their relation with Rayleigh wave speeds are characterized.

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KW - Finite element method

KW - Laser ultrasound technique

KW - Lithium niobate

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Antisymmetric flexural modes propagating along apex of piezoelectric wedges

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