Santos e Lucato, Sergio Luis dos ; Lupascu, Doru C. ; Kamlah, Marc ; Rödel, Jürgen ; Lynch, Christopher S. (2001)
Constraint-induced crack initiation at electrode edges in piezoelectric ceramics.
In: Acta Materialia, 49 (14)
Article, Bibliographie
Abstract
A strain incompatibility arises between the electrically active and inactive parts of a partially electroded piezoelectric material. This leads to cracking perpendicular to the electrode edge. Symmetric partial electrodes of different widths were applied to lead zirconate titanate (PZT) plates to study the development of these cracks. Different cracking patterns appeared upon application of an electric field, depending on the degree of coverage and on the thickness of the plates. The apparent coercive fields are correlated to the degree of clamping and the amount of cracking in the specimens. Non-linear finite element modelling is used to analyse the material response.
| Item Type: | Article |
|---|---|
| Erschienen: | 2001 |
| Creators: | Santos e Lucato, Sergio Luis dos ; Lupascu, Doru C. ; Kamlah, Marc ; Rödel, Jürgen ; Lynch, Christopher S. |
| Type of entry: | Bibliographie |
| Title: | Constraint-induced crack initiation at electrode edges in piezoelectric ceramics |
| Language: | English |
| Date: | August 2001 |
| Publisher: | PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND |
| Journal or Publication Title: | Acta Materialia |
| Volume of the journal: | 49 |
| Issue Number: | 14 |
| Abstract: | A strain incompatibility arises between the electrically active and inactive parts of a partially electroded piezoelectric material. This leads to cracking perpendicular to the electrode edge. Symmetric partial electrodes of different widths were applied to lead zirconate titanate (PZT) plates to study the development of these cracks. Different cracking patterns appeared upon application of an electric field, depending on the degree of coverage and on the thickness of the plates. The apparent coercive fields are correlated to the degree of clamping and the amount of cracking in the specimens. Non-linear finite element modelling is used to analyse the material response. |
| Uncontrolled Keywords: | computer simulation; ceramics (functional); electrical properties (piezoelectricity); fracture (brittle); theory & modelling (structural behaviour); MULTILAYER ACTUATORS; FERROELECTRIC CERAMICS |
| Identification Number: | 462TF |
| 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 10:46 |
| Last Modified: | 05 Mar 2013 09:50 |
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