Effect of electric displacement saturation on the stress intensity factor for a crack in a ferroelectric ceramic
| Autor: | K.M. Jeong, I.O. Kim, H.G. Beom |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
Condensed matter physics business.industry Mechanical Engineering Ferroelectric ceramics Condensed Matter Physics Ferroelectricity Condensed Matter::Materials Science Polarization density Optics Mechanics of Materials Electric field visual_art visual_art.visual_art_medium General Materials Science Ceramic business Saturation (magnetic) Electric displacement field Stress intensity factor Civil and Structural Engineering |
| Zdroj: | Mechanics Research Communications. 31:373-382 |
| ISSN: | 0093-6413 |
| DOI: | 10.1016/s0093-6413(03)00093-4 |
| Popis: | A crack in a ferroelectric ceramic with perfect saturation under electric loading is analyzed. The boundary of the electric displacement saturation zone ahead of the crack tip is assumed to be ellipse in shape. The shape and size of ferroelectric domain switching zone near a crack tip is determined based on the nonlinear electric theory. The stress intensity factor induced by ferroelectric domain switching under small-scale conditions is numerically obtained as a function of the electric saturation zone parameter and the ratio of the coercive electric field to the yield electric field. It is found that the stress intensity factor increases as the ratio of the semi-axes of the saturation ellipse increases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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