Dynamic Fracture Toughness of Piezoelectric Ceramics

被引：15
|
作者：
Chen Hao-Sen [1 ]
Yu Xia [2 ]
Guo Ya-Zhou [2 ]
Fang Dai-Ning [3 ,4 ]
机构：
[1] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
[2] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Peoples R China
[3] Peking Univ, LTCS, Beijing 100871, Peoples R China
[4] Peking Univ, Coll Engn, Beijing 100871, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2013年 / 96卷 / 07期
基金：
中国国家自然科学基金;
关键词：
INDENTATION; BEHAVIOR; PZT;
D O I：
10.1111/jace.12426
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
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页码：2036 / 2038
页数：3
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