Microcracking and electric fatigue of polycrystalline ferroelectric ceramics

Sang Joo Kim, Qing Jiang

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


The major obstacle preventing ferroelectric actuators from enjoying wide application is the so-called electric fatigue which results in reduction of actuation displacement/force after actuators have been subjected to many cycles of applied electric field. Experimental observations reveal that fatigued specimens often contain scattered microcracks, and hence suggest that microcracking may be the cause of electric fatigue. This paper presents a theoretical model developed within the framework of continuum electrodynamics for deformable dielectrics, to study the microcracking effect upon macroscopic properties of polycrystalline ferroelectric ceramics. The numerical results indicate that microcracking can indeed cause the observed fatigue behavior.

Original languageEnglish
Pages (from-to)321-326
Number of pages6
JournalSmart Materials and Structures
Issue number3
StatePublished - Jun 1996


Dive into the research topics of 'Microcracking and electric fatigue of polycrystalline ferroelectric ceramics'. Together they form a unique fingerprint.

Cite this