Interaction of a Screw Dislocation with an Interfacial Crack in Two Dissimilar Piezoelectric Layers |
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| Journal | Key Engineering Materials (Volumes 261 - 263) |
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| Volume | Advances in Fracture and Failure Prevention |
| Edited by | Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka |
| Pages | 141-146 |
| DOI | 10.4028/www.scientific.net/KEM.261-263.141 |
| Citation | Jin Xi Liu et al., 2004, Key Engineering Materials, 261-263, 141 |
| Online since | April, 2004 |
| Authors | Jin Xi Liu, Ai Ping Liu, Z.Q. Jiang, Ai Kah Soh |
| Keywords | Interfacial Crack, Piezoelectric Material, Screw Dislocation, Shielding Effect |
| Abstract | A screw dislocation interacting with a semi-infinite interfacial crack in two dissimilar piezoelectric layers is studied. The complex variable method and the conformal mapping technique are employed to obtain the solution of the problem. The stress and electric displacement intensity factors are given explicitly. We find that the stress and electric displacement intensity factors depend on the effective electro-elastic material constants. Numerical example shows that the influence of piezoelectric effect on the crack tip shielding is significant. |
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