Anisotropy of Fracture Toughness of Piezoelectric Ceramics

Authors:
Open Access
Publisher website
Google Scholar
Abstract
The anisotropy of fracture toughness of PZT‐ and barium titanate‐based piezoelectric ceramics was studied using doubletorsion and indentation methods. The influence of elastic anisotropy and the piezoelectric effect in calculating the K c value are discussed. The fracture toughness in the polarization plane is greater than that in the perpendicular plane. A model is suggested to explain the observed anisotropy; it is based on assumption of a stress‐induced domain reorientation zone near the crack tip.

This publication has 13 references indexed in Scilit: