Electromechanical filed concentrations and polarization switching due to interdigitated electrodes in piezoelectric macro-fiber composites under tension

2011 ◽  
Author(s):  
Fumio Narita ◽  
Yasuhide Shindo ◽  
Koji Sato ◽  
Tomo Takeda
Keyword(s):  
Polarization Switching ◽  
Fiber Composites ◽  
Interdigitated Electrodes

Development of a PZT Fiber/Piezo-Polymer Composite Actuator With Interdigitated Electrodes

2001 ◽  
Author(s):  
Cheol Kim ◽  
Kun-Hyung Koo
Keyword(s):  
Composite Plate ◽  
Effective Properties ◽  
Fiber Composite ◽  
Matrix Material ◽  
Three Dimensional ◽  
Fiber Composites ◽  
Numerical Analyses ◽  
Interdigitated Electrodes ◽  
Composite Actuator ◽  
Piezoelectric Fiber

Abstract Piezoelectric Fiber Composites with Interdigitated Electrodes (PFCIDE) were previously introduced as an alternative to monolithic wafers with conventional electrodes for applications of structural actuation. This paper is an investigation into the performance improvement of piezoelectric fiber composite actuators by changing the matrix material. This paper presents a modified micro-electromechanical model and numerical analyses of piezoelectric fiber/piezopolymer matrix composite actuator with interdigitated electrodes (PFPMIDE). Various concepts from different backgrounds including three-dimensional linear elastic and dielectric theories have been incorporated into the present linear piezoelectric model. The rule of mixture and the modified method to calculate effective properties of fiber composites were extended to apply to the PFPMIDE model. The new model was validated comparing with available experimental data and other analytical results. To see the structural responses of a composite plate integrated with the PFPMIDE, three-dimensional finite element formulations were derived. Numerical analyses show that the shape of the graphite/epoxy composite plate with the PFPMIDE may be controlled by judicious choice of voltages, piezoelectric fiber angles, and elastic tailoring of the composite plate.

In situ growth of interdigitated electrodes made of polypyrrole for active fiber composites

2007 ◽  
Vol 18 (3) ◽  
pp. 249-253 ◽  
Author(s):  
Niccolò Pini ◽  
Stephan Busato ◽  
Hans-Rudolf Elsener ◽  
Paolo Ermanni
Keyword(s):  
Fiber Composites ◽  
In Situ Growth ◽  
Interdigitated Electrodes ◽  
Active Fiber ◽  
Active Fiber Composites
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