Effects of in-plane electric fields on the toughening behavior of ferroelectric ceramics

Wang, Jianxin; Landis, Chad

doi:10.2140/jomms.2006.1.1075

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Effects of in-plane electric fields on the toughening behavior of ferroelectric ceramics

Jianxin Wang and Chad M. Landis

Vol. 1 (2006), No. 6, 1075–1095

DOI: 10.2140/jomms.2006.1.1075

Abstract

Mode-I steady state crack growth in poled ferroelectric ceramics subjected to simultaneous electrical and mechanical loading is analyzed to investigate the effect of in-plane electric fields and polarization on the toughening behavior. A multiaxial, incremental constitutive law for domain switching is implemented within the finite element method to obtain the electromechanical crack tip fields. Simulation results are presented for the cases of initial remanent polarization states and applied electric fields perpendicular to the crack plane and parallel to the crack growth direction. Specific results from the calculations include the shapes and sizes of switching zones, and the toughening effects due to domain switching near the crack tip.

Keywords

fracture toughness, finite elements, ferroelectrics, piezoelectrics, domain switching

Milestones

Received: 5 January 2006

Accepted: 17 February 2006

Published: 1 October 2006

Authors

Jianxin Wang
Department of Mechanical Engineering and Materials Science, MS 321 Rice University P.O. Box 1892 Houston, TX 77251-1892 United States

Chad M. Landis
Department of Mechanical Engineering and Materials Science, MS 321 Rice University P.O. Box 1892 Houston, TX 77251-1892 United States
http://mems.rice.edu/~landis

Vol. 1, No. 6, 2006

Jianxin Wang and Chad M. Landis

Abstract

Keywords

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Authors