scholarly journals A piezoelectric screw dislocation interacting with an imperfect piezoelectric bimaterial interface

2007 ◽  
Vol 44 (10) ◽  
pp. 3344-3358 ◽  
Author(s):  
X. Wang ◽  
L.J. Sudak
Keyword(s):  
Screw Dislocation ◽  
Bimaterial Interface ◽  
Piezoelectric Bimaterial ◽  
Piezoelectric Screw Dislocation

A Piezoelectric Screw Dislocation Interacting with a Dielectric Crack in a Hexagonal Piezoelectric Material

2005 ◽  
Vol 9 ◽  
pp. 183-190
Author(s):  
Jin Xi Liu ◽  
X.L. Liu
Keyword(s):  
Electric Field ◽  
Screw Dislocation ◽  
Electric Displacement ◽  
Image Force ◽  
Mapping Method ◽  
Piezoelectric Medium ◽  
Intensity Factors ◽  
Potential Jump ◽  
Piezoelectric Screw Dislocation ◽  
Dielectric Crack

This paper is concerned with the interaction of a piezoelectric screw dislocation with a semi-infinite dielectric crack in a piezoelectric medium with hexagonal symmetry. The solution of the considered problem is obtained from the dislocation solution of a piezoelectric half-plane adjoining a gas medium of dielectric constant ε0 by using the conformal mapping method. The intensity factors of stress, electric displacement and electric field and the image force on the dislocation are given explicitly. The effect of electric boundary conditions on the dislocation-crack interaction is analyzed and discussed in detail. The results show that ε0 only influences the electric displacement and electric field intensity factors and the image force produced by the electric potential jump.

scholarly journals Interaction of Screw Dislocation with Edge Interfacial Crack on Fine-Grained Piezoelectric Coating/Substrate

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Shuaishuai Hu ◽  
Jiansheng Liu ◽  
Junlin Li ◽  
Xiufeng Xie
Keyword(s):  
Screw Dislocation ◽  
Interfacial Crack ◽  
Mapping Function ◽  
Image Force ◽  
Infinite Plane ◽  
Principle Of Superposition ◽  
Fine Grained ◽  
Substrate Structure ◽  
Piezoelectric Bimaterial ◽  
The Right

The interaction between micro- and macrocracks in a fine-grained piezoelectric coating/substrate under remote antiplane mechanical and in-plane electrical loadings was studied. The principle of superposition and a mapping function method was used to transform the fine-grained coating/substrate structure containing the screw dislocation and the edge interfacial crack into the right semi-infinite plane piezoelectric bimaterial with screw dislocation to simplify the problem. Furthermore, the electric field, displacement field, intensity factors, and image force of these two problems were established. In addition, numerical calculations were then given graphically to study the effects of the elastic modulus of the material, the size of the crack, the thickness of the coating, and the screw dislocation angle on the edge interface crack and dislocation.

Interaction of a piezoelectric screw dislocation with an insulating crack

2002 ◽  
Vol 82 (15) ◽  
pp. 2805-2824 ◽  
Author(s):  
Tong-Yi Zhang ◽  
Tian-Hong Wang ◽  
Ming-Hao Zhao
Keyword(s):  
Screw Dislocation ◽  
Piezoelectric Screw Dislocation
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