Thickness-Shear Vibration of a Circular Crystal Plate in a Cylindrical Shell as a Pressure Sensor

HU Yuan-tai; CUI Zhi-jian; JIANG Shu-nong; YANG Jia-shi

Volume 27 Issue 6

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Article Navigation > Applied Mathematics and Mechanics > 2006 > 27(6): 663-668

HU Yuan-tai, CUI Zhi-jian, JIANG Shu-nong, YANG Jia-shi. Thickness-Shear Vibration of a Circular Crystal Plate in a Cylindrical Shell as a Pressure Sensor[J]. Applied Mathematics and Mechanics, 2006, 27(6): 663-668.

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Thickness-Shear Vibration of a Circular Crystal Plate in a Cylindrical Shell as a Pressure Sensor

1.
Institute of Mechanics and Sensing Technology, School of Civil Engineering and Architecture, Central South University, Changsha 410083, P. R. Chian;

Received Date: 2005-06-13
Rev Recd Date: 2006-02-18
Publish Date: 2006-06-15

Abstract

Abstract

Based on the theory for small fields superposed on relatively larger fields in an electroelastic body,a theoretical analysis was performed on a circular plate thickness-shear crystal resonator sealed in a circular cylindrical shell for pressure measurement.A simple expression is obtained for pressure induced frequency shifts in the resonator,which is examined for design optimization.Numerical results show that the frequency shifts depend linearly on the pressure,and that a pressure sensor with a softer outer shell or a smaller thickness ratio of the crystal plate to the outer shell has higher sensitivity.
- pressure sensor,
- resonator,
- biasing field,
- incremental field,
- frequency shift

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References(13)

References

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