动载实验中压电晶体应力量计的设计与应用

卢芳云; 李俊玲; 赵鹏铎; 崔云霄; 文学军

doi:10.6052/0459-1879-14-162

动载实验中压电晶体应力量计的设计与应用

doi: 10.6052/0459-1879-14-162

国防科学技术大学理学院工程物理研究所, 长沙 410072

基金项目: 国家自然科学基金重点项目(11132012)、国家自然科学基金(10872215)资助.

详细信息

作者简介:
卢芳云,教授,博士生导师,主要研究方向:材料动态力学性能.

中图分类号: O348.9
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- 被引次数: 0
出版历程
- 收稿日期: 2014-06-04
- 修回日期: 2014-10-04
- 刊出日期: 2014-11-18

DESIGN AND APPLICATIONS OF PIEZOELECTRIC CRYSTALS TRANSDUCER IN DYNAMIC EXPERIMENTS

National University of Defense Technology, Changsha 410072, China

Funds: The project was supported by the National Natural Science Foundation of China (11132012, 10872215).

摘要

摘要: 各种压电器件广泛用于电子工业、信息传输、医学诊断等许多领域,以实现能量转换、传感、驱动、频率控制等功能. 特别地,压电晶体以其高频响的压电效应,在动载实验中用于动态应力的测试. 利用其特有的各向异性特性,通过设计特殊的切型方向,可以实现对不同应力的测试. 本文通过分析各向异性晶体的特性,从压电效应的基本原理出发,导出了利用各向异性晶体作为剪应力量计的设计思想,并给出了两种典型的动态剪应力计:17.705°Y 切石英和165.44°Y 切铌酸锂晶体.
- 各向异性晶体 /
- 压电效应 /
- 压剪加载 /
- 动态剪应力测试 /
- 波传播
Abstract: Various piezoelectric crystals are widely used in many fields such as electronics industry, information transmission to achieve energy conversion, frequency control or as sensors and so on. With the unique piezoelectric properties and high frequency response, piezoelectric crystals have been used as force transducer in high strain-rate experiments to test dynamic stresses. Among them, quartz crystal has been used in split Hopkinson pressure bars (SHPB) for axial stress measurement, and in gas gun experiments as the shock wave pressure transducer. Meanwhile, with the anisotropic properties, it is possible to design a special rotated cut direction for the crystals to get a required piezoelectric response to selected stress. In this paper, we propose a design of shear transducer in split pressure-shear Hopkinson bars (SHPSB), by analyzing the wave propagation characteristics with a desired pure vibration mode in anisotropic crystals, and the basic principles of piezoelectric effect with independent response to the shear stress. Two typical shear transducers, which are made of 17.705° rotated Y-cut quartz and 165.44° rotated Y-cut lithium niobate respectively, are achieved finally.
- anisotropic crystals /
- piezoelectric effect /
- pressure-shear loading /
- dynamic shear measurement /
- wave propagatio

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参考文献(17)

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动载实验中压电晶体应力量计的设计与应用

doi: 10.6052/0459-1879-14-162

作者简介:
卢芳云,教授,博士生导师,主要研究方向:材料动态力学性能.

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DESIGN AND APPLICATIONS OF PIEZOELECTRIC CRYSTALS TRANSDUCER IN DYNAMIC EXPERIMENTS

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动载实验中压电晶体应力量计的设计与应用

doi: 10.6052/0459-1879-14-162

作者简介: 卢芳云,教授,博士生导师,主要研究方向:材料动态力学性能.

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出版历程

DESIGN AND APPLICATIONS OF PIEZOELECTRIC CRYSTALS TRANSDUCER IN DYNAMIC EXPERIMENTS

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出版历程

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作者简介:
卢芳云,教授,博士生导师,主要研究方向:材料动态力学性能.