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Published on: February 20, 2019
Modeling of highly loaded 0-3 piezoelectric composites using a matrix method
F Levassort1, M Lethiecq, C Millar
1GIP ULTRASONS/LUSSI, Tours.
Summary
A new model predicts piezocomposite properties based on connectivity, optimizing material selection and fabrication. This research enhances understanding of 0-3 and 3-3 connectivity in piezoelectric composites.
Area of Science:
- Materials Science
- Solid Mechanics
- Electrical Engineering
Background:
- Piezocomposites are crucial for various applications requiring electromechanical coupling.
- Previous models focused on pure 0-3 connectivity, limiting analysis for more complex structures.
- Understanding different connectivity patterns (0-3 and 3-3) is vital for optimizing composite performance.
Purpose of the Study:
- To extend an existing electroelastic moduli model to include 3-3 connectivity in piezocomposites.
- To provide a theoretical framework for optimizing piezocomposite performance through constituent selection.
- To analyze the effective proportion of 3-3 connectivity in highly loaded 0-3 piezocomposites.
Main Methods:
- Extension of a matrix method for predicting effective electroelastic moduli.
- Theoretical analysis incorporating both 0-3 and 3-3 connectivity models.
- Evaluation of effective 3-3 connectivity proportions in five composite samples.
Main Results:
- The developed model accurately predicts effective electroelastic moduli based on composite connectivity.
- The effective proportion of 3-3 connectivity is dependent on ceramic volume fraction and fabrication methods.
- Optimization of composite performance is achievable by selecting appropriate constituents and tailoring fabrication.
Conclusions:
- The extended model provides a robust tool for analyzing and optimizing piezocomposite behavior.
- Fabrication processes significantly influence the microstructural connectivity and overall performance.
- This work facilitates the design of advanced piezocomposites with tailored electroelastic properties.
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