Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1478518 | Journal of the European Ceramic Society | 2006 | 15 Pages |
Abstract
Fatigue crack growth is investigated in the polycrystalline ferroelectrics PZT-5H and PLZT 8/65/35 under electrical loading. The fatigue cracks exhibit features such as bifurcation and tunnelling, followed by crack arrest. The nature of the resulting damage differs in the two materials: in PZT-5H a narrow zone of intergranular cracks propagates across the specimen, wedging the crack surfaces apart. In PLZT 8/65/35 a broad microcracked band spreads across the specimen. The rate of crack growth is found to correlate well with the amplitude of electric displacement.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jay Shieh, John E. Huber, Norman A. Fleck,