Abstract
The effects of the damage characteristics on the material properties of a piezoelectric ceramic are examined during cyclic loading. The material being examined is a lead zirconate titanate piezoelectric ceramic (PZT). The electrical properties, such as the electromechanical coupling coefficient (k33), are changed during cyclic loading. The k33 coefficient decreases rapidly to a low level as the sample is loaded cyclically with a high applied stress, while the k33 value decreases slowly or does not change when loaded with a low applied stress. Such a change of material degradation is influenced by the severity of the material damage in the PZT ceramic. The material damage in the PZT occurs, and this occurrence is related to a lightning-like phenomenon (a bright flash with a click). Details of the damage characteristics in PZT ceramic are discussed in the present work.
Original language | English |
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Pages (from-to) | 1434-1441 |
Number of pages | 8 |
Journal | International Journal of Fatigue |
Volume | 31 |
Issue number | 8-9 |
DOIs | |
Publication status | Published - Aug 2009 |
Externally published | Yes |
Keywords
- Domain switching
- Electrical property
- Fatigue test
- Material damage
- PZT ceramic
ASJC Scopus subject areas
- Modelling and Simulation
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering