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This document summarizes a study on fracture criteria for piezoelectric ceramics with defects. It presents the results of analyzing stress and electric fields near an elliptical crack in piezoelectric materials. Two new fracture criteria are developed based on stress intensity factors and crack opening displacement. Experimental fracture toughness results for PZT-5 ceramics under combined mechanical and electrical loads are also presented to analyze the effect of electric fields on fracture and compare with

Author

Rasagya Mishra

Language

EN