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Proceedings Paper

Residual stress contribution to fracture of ferroelectric ceramics
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Paper Abstract

Experiments based on the Vicker's indentation technique are applied to a ferroelectric and a relaxor composition of lead lanthanum zirconate titanate. When polarized, the ferroelectric composition displays anisotropic crack growth. The anisotropy in crack growth is affected by electric field. Increasing the electric field increases the crack growth perpendicular to the field direction. The relaxor composition displays nearly isotropic crack growth even under electric field. Application of electric field slightly hinders crack growth perpendicular to the field. As the field level is increased, this effect diminishes. The effect appears to be related to intergranular residual stress.

Paper Details

Date Published: 31 May 1996
PDF: 7 pages
Proc. SPIE 2715, Smart Structures and Materials 1996: Mathematics and Control in Smart Structures, (31 May 1996); doi: 10.1117/12.240846
Show Author Affiliations
Christopher S. Lynch, Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2715:
Smart Structures and Materials 1996: Mathematics and Control in Smart Structures
Vasundara V. Varadan; Jagdish Chandra, Editor(s)

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