Interaction between a piezoelectric screw dislocation and a finite crack with surface piezoelectricity

2015 ◽  
Vol 66 (6) ◽  
pp. 3679-3697 ◽  
Author(s):  
Xu Wang ◽  
Yang Xu
Keyword(s):  
Screw Dislocation ◽  
Finite Crack ◽  
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.

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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