东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (10): 1464-1467.DOI: -

• 论著 • 上一篇    下一篇

基于悬臂共振法的IPMC杨氏模量的动力学测定方法

郝丽娜;高建超;刘洪涛;   

  1. 东北大学机械工程与自动化学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2008AA04Z305);;

Dynamic determination method based on cantilever resonance for IPMC Young's modulus

Hao, Li-Na (1); Gao, Jian-Chao (1); Liu, Hong-Tao (1)   

  1. (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Hao, L.-N.
  • About author:-
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摘要： 针对目前IPMC智能材料杨氏模量的测定存在方法单一、破坏材料本身等问题,提出了一种基于悬臂共振法的动力学测定方法.该方法通过激励装置使IPMC发生有阻尼自由衰减振动,采用激光位移传感技术记录其振动历程,然后对采集到的信号进行分析处理,从而得到其基频,最后采用悬臂共振法建立IPMC的横向振动方程,引入边界条件即可计算出其杨氏模量.这种方法与目前存在的拉伸法和弯曲法相比,具有测试方便简单、对材料本身不产生破坏、测定结果精度高等优点.

关键词: 智能材料, IPMC, 悬臂共振, 杨氏模量, 激光位移传感技术

Abstract: A dynamic determination method based on cantilever resonance was presented to solve the crude and material-damage problems of current ways in measurement of IPMC Young's modulus. An incentive device was applied to bring the IPMC into the damping free vibration state, which was recorded by a laser displacement sensor. The fundamental frequency was obtained by analyzing and processing the collected signal. A transverse vibration equation was established on the basis of the cantilever resonant vibration, and the IPMC Young's modulus can be then calculated by introducing boundary conditions. Compared with the existing tensile and bending tests, the proposed method has advantages of convenience and simpleness, non-destructive testing and high measurement accuracy.

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