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Electric‐Field‐Induced Fatigue Crack Growth in Piezoelectrics
Author(s) -
Cao Hengchu,
Evans Anthony G.
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb07051.x
Subject(s) - cracking , electric field , piezoelectricity , materials science , fracture mechanics , ferroelectricity , ferroelectric ceramics , fatigue cracking , field (mathematics) , composite material , ceramic , amplitude , fracture (geology) , forensic engineering , engineering , physics , dielectric , optics , mathematics , optoelectronics , quantum mechanics , pure mathematics
When subjected to large alternating electric fields, ferroelectric ceramics may experience cracking and mechanical degradation. This article describes an experimental procedure for characterizing crack extension from preexisting flaws in such materials subject to high‐amplitude, alternating electric fields. A new mode of electric‐field‐induced fatigue crack growth is identified. Fracture mechanics concepts are applied to interpret the observed cracking.