Influence of Parameter Variation on Electromechanical Admittance Spectrum of a Multiple Degree of Freedom System

DOI

10.2991/meic-15.2015.354How to use a DOI?

Keywords

PZT; MDOF; EMI; conductance; spectrum;

Abstract

Electromechanical impedance technique is a very important research field in the structural health monitoring. This paper intends to study the mechanism of some interesting phenomena in the application of this technique, such as variation rules in electrical conductance spectra at high frequency range are different from those at low frequency range. This work will help to understand the test results of electromechanical impedance measurement better. A PZT patch attached to a multiple degree of freedom system model is established and its electrical admittance expression is also derived. By adjusting the parameters of one changing component in the multiple degree of freedom system, the rules how mass, stiffness and damping parameters influence the electrical conductance spectrum are investigated. The calculation results shows that those conductance peaks formed by PZT patch modals change in different patterns with the variation of component parameters if they are on the different side of resonant frequency of changing component. In addition, the equation of resonant frequency of PZT patch and the changing component will result in the corresponding conductance peak being divided into two.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zishu Dai
AU  - Yongchang Cai
AU  - Yiying Han
AU  - Jiao Tian
PY  - 2015/04
DA  - 2015/04
TI  - Influence of Parameter Variation on Electromechanical Admittance Spectrum of a Multiple Degree of Freedom System
BT  - Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 1546
EP  - 1551
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-15.2015.354
DO  - 10.2991/meic-15.2015.354
ID  - Dai2015/04
ER  -