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Piezoelectric and mechanical properties of structured PZT–epoxy composites

Published online by Cambridge University Press:  01 February 2013

Nijesh Kunnamkuzhakkal James*
Affiliation:
Novel Aerospace Materials Group, Faculty of Aerospace Engineering, Department of Structures and Materials, Delft University of Technology, 2629 HS Delft, The Netherlands
Daan van den Ende
Affiliation:
Novel Aerospace Materials Group, Faculty of Aerospace Engineering, Delft University of Technology, 2629 HS Delft, The Netherlands; and Holst Centre, TNO, 5605 KN Eindhoven, The Netherlands
Ugo Lafont
Affiliation:
Novel Aerospace Materials Group, Faculty of Aerospace Engineering, Department of Aerospace Materials and Structures, Delft University of Technology, 2629 HS Delft, The Netherlands
Sybrand van der Zwaag
Affiliation:
Novel Aerospace Materials Group, Faculty of Aerospace Engineering, Department of Aerospace Materials and Structures, Delft University of Technology, 2629 HS Delft, The Netherlands
Wilhelm A. Groen
Affiliation:
Novel Aerospace Materials Group, Faculty of Aerospace Engineering, Department of Aerospace Structures and Materials, Delft University of Technology, 2629 HS Delft, The Netherlands; and Holst Centre, TNO, 5605 KN Eindhoven, The Netherlands
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Structured lead zirconium titanate (PZT)–epoxy composites are prepared by dielectrophoresis. The piezoelectric and dielectric properties of the composites as a function of PZT volume fraction are investigated and compared with the corresponding unstructured composites. The effect of poling voltage on piezoelectric properties of the composites is studied for various volume fractions of PZT composites. The experimentally observed piezoelectric and dielectric properties have been compared with theoretical models. Dielectrophoretically structured composites exhibit higher piezoelectric voltage coefficients compared to 0–3 composites. Structured composites with 0.1 volume fraction of PZT have the highest piezoelectric voltage coefficient. The flexural strength and bending modulus of the structured and random composites were analyzed using three-point bending tests.

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Articles
Copyright
Copyright © Materials Research Society 2013

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References

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