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Fracture toughness investigations of ferroelectric materials considering effects on macro‐ and micro‐scale
Author(s) -
Gellmann Roman,
Ricoeur Andreas
Publication year - 2012
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201210169
Subject(s) - poling , materials science , ferroelectricity , macro , macroscopic scale , toughness , anisotropy , scale (ratio) , nonlinear system , fracture toughness , composite material , dielectric , coupling (piping) , computer science , physics , optics , optoelectronics , quantum mechanics , programming language
In the present work we study toughness variation of ferroelectric materials (PZT‐5H) considering different scales for different poling and loading conditions. On the macro‐scale we apply an extended theory of stresses at interfaces in dielectric solids. Further, on the micro‐scale, nonlinear effects are introduced by applying the small scale switching approximation. The analysis is done considering the full anisotropy and electromechanical coupling of the material. (© 2012 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)