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The strip dielectric breakdown model at the crack tip in a piezoelectric material
The strip dielectric breakdown model is applied to the fracture prediction of piezoelectric materials containing electrically impermeable crack. It is assumed that the electric pre-fracture zone is localized on a line segment in front of the crack tip and the electric potential jump only arises in t...
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| Main Author: | |
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| Format: | Article |
| Language: | Russian |
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Інститут енергетичних машин і систем ім. А. М. Підгорного Національної академії наук України
2017
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| Subjects: | |
| Online Access: | https://journals.uran.ua/jme/article/view/91637 |
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| Summary: | The strip dielectric breakdown model is applied to the fracture prediction of piezoelectric materials containing electrically impermeable crack. It is assumed that the electric pre-fracture zone is localized on a line segment in front of the crack tip and the electric potential jump only arises in the strip. The exact analytical solution of the problem is found. An equation for the electric pre-fracture zone length determination and the stress intensity factor are derived from this solution. The influence of the applied electric field upon the fracture parameters are investigated. |
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