The vibration analysis of partial electrode piezoelectric plate
Date Issued
2007
Date
2007
Author(s)
Hsu, Ting-Wei
DOI
zh-TW
Abstract
We first discuss the effect of mesa design for QCM system. The energy trapping effect will disappear under the specific geometry of QCM, and we call dropping effect. When this phenomenon occurs, the measurement will generate a lot of frequency drift and decrease the accuracy of QCM.
To avoid the phenomenon of dropping effect, we use finite element method and the numerical method to analyze the approximately geometry and the reasons for dropping effect. Until now, we can not find out the real reasons of dropping effect occurs, but we use the solution of simulations and analytic approaches to find out its regularities and possible sizes.
In the model of dual-electrode QCM, one electrode will have influence on the other during operation, further reducing accuracy. Hence, this thesis is to find out the extent of impact and the corresponding relation to minimize it through the mesa design.
Subjects
雙電極石英晶體微天平
壓電材料
能量井效應
平台設計
有限元素分析模擬
multi-channel quartz crystal microbalance
piezoelectric materia
energy trapping effect
mesa design
finite element method analysis
Type
thesis
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