Theoretical study on the static performance of piezoelectric ceramic-polymer composites with 2-2 connectivity

Author

Cao, Wenwu ; Zhang, Q.M. ; Cross, L. Eric

Author_Institution

Mater. Res. Lab., Pennsylvania State Univ., University Park, PA, USA

Volume

40

Issue

2

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

103

Lastpage

109

Abstract

The static equilibrium conditions have been derived for piezoelectric-ceramic-polymer composite structures. Rigorous solutions are obtained for a 2-2 composite of lamellar configuration. Under a uniaxial stress or an electric field the strain profile becomes inhomogeneous due to different elastic stiffness of the two components (hard piezoelectric ceramics and soft polymer). The stress transfer between the two components is identified as due to an additional shear stress produced at the ceramic-polymer interface, and the amplification factor is defined for the enhancement of the response of the active piezoelectric ceramic resulting from this stress transfer. It is shown that this enhancement effect not only depends on the volume percentage of the active component but also on the aspect ratio of the two components.<>

Keywords

ceramics; composite material interfaces; filled polymers; internal stresses; piezoelectric materials; stress-strain relations; 2-2 connectivity; amplification factor; aspect ratio; elastic stiffness; electric field; lamellar configuration; piezoelectric ceramic-polymer composites; shear stress; static equilibrium conditions; static performance; strain profile; stress transfer; uniaxial stress; Capacitive sensors; Ceramics; Composite materials; Dielectric materials; Impedance; Nonuniform electric fields; Piezoelectric materials; Polymers; Stress; Titanium compounds;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.212557

Filename

212557