| 有限液体负载下压电平板声板波理论分析 |
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| 引用本文： | 阳明益,陈继超.有限液体负载下压电平板声板波理论分析[J].力学学报,2008,40(4):479-484. |
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| 作者姓名： | 阳明益 陈继超 |
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| 作者单位： | 台湾大学机械工程研究所 台灣大學機械工程所 |
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| 摘 要： | 主要推导平板声板波受有限液体负载后能量衰减与波速改变情形,
以部分波传理论分析该受液体负载的压电平板波传行为,
并以一128$^{\circ}Y$向切角的铌酸锂芯片为例,分析前20个声板波受水与甘油负载下
的能量衰减,并固定某一平板板波, 针对不同甘油厚度负载下,
计算其相速度与衰减变化,该理论分析对于液体负载下的平板板波传感器应用具有极大的参
考价值.
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| 关 键 词： | 压电平板 声板波 部分波传理论 黏滞性传感器 有限厚度液体 |
| 收稿时间： | 2007-06-21 |
| 修稿时间： | 2007-09-27 |
THE THEORETICAL ANALYSIS OF ACOUSTIC PLATE WAVE IN PIEZOELECTRIC PLATE WITH FINITE FLUID LOADING |
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| Yang Mingyi,Chen Jichao.THE THEORETICAL ANALYSIS OF ACOUSTIC PLATE WAVE IN PIEZOELECTRIC PLATE WITH FINITE FLUID LOADING[J].chinese journal of theoretical and applied mechanics,2008,40(4):479-484. |
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| Authors: | Yang Mingyi Chen Jichao |
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| Institution: | Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, China Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, China |
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| Abstract: | This article presents the attenuations and phase shifts
of the acoustic plate wave modes (APMs) with finite liquid loading in
piezoelectric plates. The partial wave theory is applied to analyze a
piezoelectric plate loading with liquid. The first 20 APMs in
128$^{{\circ}}$YX+90$^{{\circ} }$LiNbO$_{3}$ plate with DI water and
glycerol loading are theoretically calculated. The variation of phase
velocity and attenuation of APMs with different thickness of glycerol also
presented. The results shown in this paper are essential for using the APMs
in the designs of liquid phase sensors. |
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| Keywords: | piezoelectric plate acoustic plate modes partial wave theory viscous sensors finite thickness fluid |
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