Screw Dislocations Emitted from a Blunt Crack in a Piezoelectric Material

Hao Peng Song; Cun Fa Gao

doi:10.4028/www.scientific.net/AMR.891-892.1742

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 891-892Screw Dislocations Emitted from a Blunt Crack in a...

Screw Dislocations Emitted from a Blunt Crack in a Piezoelectric Material

Abstract:

The problem of a piezoelectric screw dislocation emitted from a blunt crack is dealt with in this paper. For an arbitrary distribution of the residual dislocation, the series-form solutions are derived. The results show that the force acting on the dislocation decreases with the value of the dielectric constant within the crack increasing. And the increase of the dielectric constant within the crack helps dislocation emission effectively.

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Periodical:

Advanced Materials Research (Volumes 891-892)

Pages:

1742-1748

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.891-892.1742

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Online since:

March 2014

Authors:

Hao Peng Song*, Cun Fa Gao

Keywords:

Blunt Crack, Dislocation Emission, Electric Field Strength, Image Force, Piezoelectric, Screw Dislocation

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* - Corresponding Author

References

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DOI: 10.1115/1.321172

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