高压应力下压电叠堆静态特性研究
PDF下载 (392)刁卫东,潘巧生,冯志华.高压应力下压电叠堆静态特性研究[J].宁波大学学报(理工版),2019,32(4):38-42.DOI:
DIAO Weidong,PAN Qiaosheng,FENG Zhihua.Static characteristics of high compressive stress on piezoelectric stacks[J].Journal of Ningbo University(Natural Science & Engineering Edition),2019,32(4):38-42.DOI:
| Title: | Static characteristics of high compressive stress on piezoelectric stacks |
| 作者: | 刁卫东, 潘巧生, 冯志华 |
| Author(s): | DIAO Weidong, PAN Qiaosheng, FENG Zhihua |
| 关键词: | 压电叠堆; 高压应力; 硬陶瓷; 软陶瓷; 做功能力; 压电性能 |
| Keywords: | piezoelectric stacks; high compressive stress; hard PZT; soft PZT; work capability; piezoelectric properties |
| 分类号: | TN384 |
| 文献标识码: | A |
| 摘要: | 研究了PZT5软陶瓷压电叠堆在100MPa高压应力下、PZT4硬陶瓷压电叠堆在300MPa高压应力下的位移输出特性变化, 分析了应力对它们压电性能的影响, 并对软陶瓷压电叠堆的重新极化问题和硬陶瓷压电叠堆的做功能力进行了讨论. 实验结果表明, 软陶瓷压电叠堆在适当的低压应力下, 压电性能显著提高, 较高的压应力下则出现退极化, 卸载后重新极化可以恢复大部分性能. 硬陶瓷压电叠堆在高压应力下压电性能有所提高, 做功能力远高于低应力时, 高压应力可更有利于发挥硬陶瓷的做功优势. |
| Abstract: | Generally, piezoelectric stacks need to work under a certain preload to improve the stability, and sometimes they are also subjected to external high compressive stress. The displacement output characteristics of soft PZT5 stacks under uniaxial compressive stress up to 100MPa and that of hard PZT4 stacks under compressive stress up to 300MPa were studied. Then the effects of the stress on piezoelectric properties were analyzed, meanwhile, the repolarization of soft PZT5 stacks and the work capability of hard PZT4 stacks were discussed. The experimental results show that the piezoelectric properties of the soft PZT5 stacks are significantly improved under appropriate lower compressive stress, and are deteriorated under higher compressive stress. However, the piezoelectric properties can be recovered mostly through repolarization after unloading. Piezoelectric properties of hard PZT4 stacks are improved under high compressive stress and their work capability under high stress should be much higher than that of low stress, demonstrating that high-pressure stress may be more conducive to giving full play to the work advantage of hard PZT. |
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| 备注/Memo: | 收稿日期: 2019－03－20. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/基金项目: 国家科技支撑计划（2015BAK34B02）.第一作者: 刁卫东（1994－）, 男, 河南商丘人, 在读硕士研究生, 主要研究方向: 压电叠堆致动器应用研究. E-mail: dwdzkdcb@mail.ustc.edu.cn*通信作者: 冯志华（1964－）, 男, 安徽亳州人, 教授, 主要研究方向: 压电致动与精密传感. E-mail: fff@ustc.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
