Abstract
We report theoretical and experimental examination of the cyclic fatigue behavior in cracked piezoelectric ceramics under direct current (DC) and alternating current (AC) electric fields. Cyclic fatigue tests were carried out in three-point bending with the single-edge precracked-beam (SEPB) specimens. The crack was created normal to the poling direction. Numbers of cycles to failure under sinusoidal mechanical loads and DC/AC electric fields were obtained from the experiment. Plane strain finite element analysis was also conducted, and the effects of electric fields and polarization switching/domain wall motion on the energy release rate were discussed in detail.
| Original language | English |
|---|---|
| Pages (from-to) | 141-147 |
| Number of pages | 7 |
| Journal | AES-ATEMA International Conference Series - Advances and Trends in Engineering Materials and their Applications |
| Volume | 2014-January |
| Issue number | January |
| Publication status | Published - 2014 |
| Event | 18th AES-ATEMA International Conference on Advances and Trends in Engineering Materials and Their Applications, ATEMA TORONTO 2014 - Toronto, Canada Duration: 2014 Aug 11 → 2014 Aug 15 |
Keywords
- Cyclic fatigue
- Finite element method
- Material testing
- Piezomechanics
- PZT ceramics
- Smart materials and structures