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Dynamic Fracture Toughness of Piezoelectric Ceramics
Author(s) -
HaoSen Chen,
Xia Yu,
YaZhou Guo,
DaiNing Fang
Publication year - 2013
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/jace.12426
Subject(s) - fracture toughness , materials science , split hopkinson pressure bar , composite material , poling , ceramic , piezoelectricity , polyvinylidene fluoride , toughness , fracture (geology) , bending , dynamic loading , strain rate , polymer , ferroelectricity , optoelectronics , dielectric
Both dynamic and static three‐point bending fracture testings of 32 piezoelectric ceramic samples were performed in four different poling directions. A modified split Hopkinson pressure bar method with a polyvinylidene fluoride ( PVDF )‐based gauge was utilized for the dynamic experiments. The loading rate greatly influenced the fracture toughness in two ways: the dynamic fracture toughness values were much higher than those of the static fracture toughness, and unlike the static fracture toughness, the influence of poling direction on the dynamic fracture toughness was not obvious.