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Proceedings Paper

Effective properties analysis of a piezoelectric composite including conducting phase using a numerical homogenization approach
Author(s): Hongming Zhang; Xiaodong He; Rongguo Wang; Lifeng Hao
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Paper Abstract

Piezoelectric composites find increasing applications in the field of smart materials, mainly as sensors and transducer. However, accurately predicting its performance is still a challenging task. In this paper, we analyzed the electromechanical properties of a three-phase piezoelectric composite with titanate piezoelectric ceramics powders (PZT-5H) and carbon black embedded in an epoxy matrix by a finite element numerical method. A homogenizing micromechanical model is applied, which is capable to provide various property parameters of the piezoelectric composite, such as dielectric constant, piezoelectric constant. The calculation verifies that the electric network formed by the conducting-phase carbon black(CB) can effectively improve the electromechanical performance of the piezoelectric composites. The effect of different content of the carbon black is also taken in consideration in the simulation. A good fit between the calculation and the experimental results clearly shows that the homogenizing modeling is able to accurately predict the electromechanical properties of the three-phase piezoelectric composite. This work will contribute to optimize the material function design and analyze the effect of conduct phase on the piezoelectric composites.

Paper Details

Date Published: 12 April 2012
PDF: 8 pages
Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 84092I (12 April 2012); doi: 10.1117/12.921790
Show Author Affiliations
Hongming Zhang, Harbin Institute of Technology (China)
Xiaodong He, Harbin Institute of Technology (China)
Rongguo Wang, Harbin Institute of Technology (China)
Lifeng Hao, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 8409:
Third International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Yoseph Bar-Cohen; In Lee; Jian Lu, Editor(s)

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