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http://dx.doi.org/10.6111/JKCGCT.2011.21.6.253

Numerical analysis for electro-mechanical coupling performance of 1-3 type Piezo-composite  

Shin, H.Y. (Simulation Center, Business Support Div., KICET)
Kim, J.H. (Simulation Center, Business Support Div., KICET)
Lim, S.J. (Simulation Center, Business Support Div., KICET)
Im, J.I. (Simulation Center, Business Support Div., KICET)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.21, no.6, 2011 , pp. 253-258 More about this Journal
Abstract
Electro-mechanical coupling performance ($k_t$) of a 1-3 type Piezo-composite was analyzed numerically using FEM. The calculated physical properties of the PZT ceramics were compared with the experimental data and the accuracy of the numerical method was verified. Also the $k_t$ of the composite was analyzed with the vol% and the material properties of the constitutional parts, and the aspect ratio of the PZT rod. As the simulated results, the $k_t$ increased rapidly when the vol% of the PZT ceramics increased up to 30 vol% and saturated the constant value in the above region. And the composite using the soft matrix polymer than the hard one have the superior $k_t$ characteristics. The $k_t$ was greatly influenced by the aspect ratio of the PZT rod up to 30 vol% of PZT ceramics. To improve the $k_t$ characteristics, it is useful that the composite consist of the relatively flexible polymers and the PZT material having the excellent piezoelectric characteristics.
Keywords
1-3 Type piezo-composite; Electro-Mechanical Coupling factor; FEM; Aspect ratio; Volume fraction;
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