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Crack initiation and crack propagation in partially electroded PZT

Santos e Lucato, Sergio Luis dos and Lupascu, Doru C. and Rödel, Jürgen (2001):
Crack initiation and crack propagation in partially electroded PZT.
In: Journal of the European Ceramic Society, ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, pp. 1425-1428, 21, (10-11), ISSN 0955-2219,
[Article]

Abstract

For partially electroded piezoelectric materials, a strain incompatibility arises between the electrically active part and the electrically inactive part of the material. This can lead to crack initiation and crack propagation perpendicular to the electrode edge. In order to study crack initiation, a symmetrical geometry with the electrodes in the centre of the surfaces of thin lead zirconate titanate (PZT) plates was devised. Upon application of the electrical field, different cracking patterns appear, depending on degree of coverage and on thickness of the plates. Linear and non-linear FEM modelling is able to explain some of the materials response. (C) 2001 Elsevier Science Ltd. All rights reserved.

Item Type: Article
Erschienen: 2001
Creators: Santos e Lucato, Sergio Luis dos and Lupascu, Doru C. and Rödel, Jürgen
Title: Crack initiation and crack propagation in partially electroded PZT
Language: English
Abstract:

For partially electroded piezoelectric materials, a strain incompatibility arises between the electrically active part and the electrically inactive part of the material. This can lead to crack initiation and crack propagation perpendicular to the electrode edge. In order to study crack initiation, a symmetrical geometry with the electrodes in the centre of the surfaces of thin lead zirconate titanate (PZT) plates was devised. Upon application of the electrical field, different cracking patterns appear, depending on degree of coverage and on thickness of the plates. Linear and non-linear FEM modelling is able to explain some of the materials response. (C) 2001 Elsevier Science Ltd. All rights reserved.

Journal or Publication Title: Journal of the European Ceramic Society
Volume: 21
Number: 10-11
Publisher: ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Uncontrolled Keywords: actuators; defects; fracture; PZT; MULTILAYER ACTUATORS
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 14 Jul 2011 10:37
Identification Number: 462PY
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