Test standards and design fixtures for piezoelectric ceramic fibers with Pt core

LUO jun; QIU Jin-hao; ZHU Kong-jun; JI Hong-li; DU Jian-Zhou

doi:10.3788/OPE.20132104.1000

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Test standards and design fixtures for piezoelectric ceramic fibers with Pt core

更新时间：2020-08-12

- Test standards and design fixtures for piezoelectric ceramic fibers with Pt core
- Optics and Precision Engineering Vol. 21, Issue 4, Pages: 1000-1010(2013)
- 作者机构：
  
  南京航空航天大学机械结构力学及控制国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132104.1000
  CLC： TG75;TN384
- Received：24 October 2012，
  
  Revised：19 December 2012，
  
  Published Online：20 April 2013，
  
  Published：15 April 2013
- 稿件说明：
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罗俊裘进浩朱孔军季宏丽杜建周. 含金属芯压电纤维的测试标准与夹具设计[J]. 光学精密工程, 2013,21(4): 1000-1010

LUO jun QIU Jin-hao ZHU Kong-jun JI Hong-li DU Jian-Zhou. Test standards and design fixtures for piezoelectric ceramic fibers with Pt core[J]. Editorial Office of Optics and Precision Engineering, 2013,21(4): 1000-1010
罗俊裘进浩朱孔军季宏丽杜建周. 含金属芯压电纤维的测试标准与夹具设计[J]. 光学精密工程, 2013,21(4): 1000-1010 DOI： 10.3788/OPE.20132104.1000.

LUO jun QIU Jin-hao ZHU Kong-jun JI Hong-li DU Jian-Zhou. Test standards and design fixtures for piezoelectric ceramic fibers with Pt core[J]. Editorial Office of Optics and Precision Engineering, 2013,21(4): 1000-1010 DOI： 10.3788/OPE.20132104.1000.

摘要

针对新型压电器件含金属芯压电纤维（MPF）结构尺寸细小，很难找到合适的测量夹具和测试方法等问题，提出了一种操作方便的MPF测试方法。首先，通过MPF的压电方程得到其测试模型，并确定了MPF的电学性能测试步骤。然后，研究了测量夹具对测量结果的影响。实验显示：夹持位置在MPF的中间时容易产生偏离，影响测量结果；夹持位置在端部时，谐振频率和反谐振频率的相对导纳值较小，也不利于准确测量。另外，MPF尺寸细小，夹持力也会影响MPF的谐振，使测量结果产生误差。最后，提出一种不需要夹持测量MPF的方法。采用该方法对PZN-PZT压电陶瓷的MPF进行了测量，结果显示其压电应变常数d31为-97 pC/N，机电耦合系数k31为0.197，介电常数T33为1 458。这种方法测试准确，操作简单，不易损伤MPF，可作为MPF压电性能测试标准。

Abstract

As Metal-core Piezoelectric Ceramic Fibers (MPFs)

one types of the new piezoelectric devices

have smaller structrures and sizes

it is difficult to find proper mesurement method and corresponding measuring fixture. Therefore

this paper proposed a precise and easily operated method to measure the MPFs. First

the test model was deduced by using the constitutive equations of a MPF

and the measuring steps for electrical performance of the MPF were established. Then

the effect of test fixture on the measurement results was investigated. Experiments show that it is easy to produce deviation when the clamping positions in the middle of the MPF

which can influence the measurement results . When the clamping position is at the end of the MPF

the relative admittance values of resonance and anti-resonance frequency are smaller

which is hard to be measured either. Furthermore

an improper clamping pressure have a strong effect on the measured value due to the smaller size of MPF. Finally

a measurement method without clamping for the MPF was presented. By the proposed methd

the PZN-PZT MPFs were measured

obtained results give the piezoelectric property values by piezoelectric strain d31 of -97pC/N

electromechanical coupling coefficients k31 of 0.197

and dielectric constant 33T of 1 458. This kind of method is accurate

simple operation

and not damage to MPFs

and can be used as a test standard for MPFs.

关键词

Keywords

references

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