| 基于磁流体黏性负载效应的压电层状结构SH-SAW传播特性分析 |
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| 引用本文： | 叶建军,刘桂雄. 基于磁流体黏性负载效应的压电层状结构SH-SAW传播特性分析[J]. 科学技术与工程, 2011, 11(19) |
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| 作者姓名： | 叶建军 刘桂雄 |
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| 作者单位： | 华南理工大学机械与汽车学院,广州,510640 |
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| 基金项目： | 国家自然科学基金(50775077); 高等学校博士学科点专项科研基金(20060561003); 广东省自然科学基金(06025670)资助 |
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| 摘 要： | 在分析声表面波(SAW)传感器机理的基础上，提出一种新型的磁流体-声表面波传感器(MF-SAW)，建立起工作在均匀磁场中的MF-SAW理论模型，并进行数值求解，讨论不同磁场强度下的SH-SAW传播相速度、能量损耗特性。结果表明，通过改变磁流体黏性，磁场强度与SH-SAW传播属性具有较好的曲线关系，有助于对MF-SAW传感器的进一步研究分析。
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| 关 键 词： | 声表面波；磁流体；传感器；黏性负载效应 |
| 收稿时间： | 2011-03-25 |
| 修稿时间： | 2011-04-07 |
Analysis of SH-SAW Propagation Characteristics in Piezoelectric Layered Structure Based on Viscous Loading Effect of Magnetic Fluid |
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| YE Jianjun and LIU Guixiong. Analysis of SH-SAW Propagation Characteristics in Piezoelectric Layered Structure Based on Viscous Loading Effect of Magnetic Fluid[J]. Science Technology and Engineering, 2011, 11(19) |
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| Authors: | YE Jianjun and LIU Guixiong |
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| Affiliation: | YE Jian-jun,LIU Gui-xiong,LIU Hong(School of Mechanical and Automotive Engineering,South China Univ.of Tech.,Guangzhou 510640,P.R.China) |
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| Abstract: | Based on analysis of surface acoustic wave (SAW) sensor mechanism, a new type of magnetic fluid surface acoustic wave sensor (MF-SAW) has been put forward. The MF-SAW theoretical model has been established in a uniform magnetic field and numerical solution has been discussed. Then the phase velocity of SH-SAW propagation and energy loss characteristics have been discussed under different magnetic field strength. The result shows that by changing the viscosity of magnetic fluid, the curve between magnetic field strength and SH-SAW propagation properties has a good relationships, it contributes to further analysis for MF-SAW sensor. |
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| Keywords: | SAW Magnetic fluid Sensors Viscous loading effect |
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