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Proceedings Paper

Effect of electric fields on fracture behavior of PZT ceramics
Author(s): A. G. Tobin; Eugene Pak
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Paper Abstract

To obtain a better understanding of the effects of electric fields on the fatigue lifetime of PZT materials, specimens of poled and unpoled PZT-8 were either pre-indented to generate a pre- crack or indented in the presence of an applied static electric field. Significant differences in the crack growth behavior perpendicular and parallel to the poling direction were observed in static and time-varying electric fields leading to a reduction in the fracture toughness normal to the poling axis. Fatigue crack growth was significant at field amplitudes as low as 5% of the poling fields. These results are shown to be related to the effects of electrical fields on the stresses at the crack tip.

Paper Details

Date Published: 23 July 1993
PDF: 9 pages
Proc. SPIE 1916, Smart Structures and Materials 1993: Smart Materials, (23 July 1993); doi: 10.1117/12.148506
Show Author Affiliations
A. G. Tobin, Grumman Corporate Research Ctr. (United States)
Eugene Pak, Grumman Corporate Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1916:
Smart Structures and Materials 1993: Smart Materials
Vijay K. Varadan, Editor(s)

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