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Proceedings Paper

A cohesive model of fatigue of ferroelectric materials under electro-mechanical cyclic loading
Author(s): Irene Arias; Santiago Serebrinsky; Michael Ortiz
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Paper Abstract

A cohesive fatigue-crack nucleation and growth model for ferroelectric materials under electro-mechanical loading is presented. The central feature of the model is a hysteretic cohesive law which couples the mechanical and electrical fields. This law can be used in conjunction with general constitutive relations of bulk behavior, possibly including domain switching, in order to predict fatigue crack growth under arbitrary loading conditions. Another appealing feature of the model is its ability to predict fatigue-crack nucleation. Despite the scarcity and uncertainty of the experimental data, comparisons with PZT fatigue-life data are encouraging.

Paper Details

Date Published: 21 July 2004
PDF: 8 pages
Proc. SPIE 5387, Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics, (21 July 2004); doi: 10.1117/12.540097
Show Author Affiliations
Irene Arias, California Institute of Technology (United States)
Santiago Serebrinsky, California Institute of Technology (United States)
Michael Ortiz, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5387:
Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics
Dimitris C. Lagoudas, Editor(s)

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