Influence of notch radius on the fracture load of piezoelectric ceramics

被引：2
|
作者：
Kim, Dae Weon [1 ]
Shin, Dong Chul [2 ]
Park, Yeong Min [3 ]
Kim, Tae Gyu [4 ]
机构：
[1] Daegu Tech Univ, Dept Aviat Maintenance, Daegu, South Korea
[2] Koje Coll, Dept Mech Engn, Gyeongnam, South Korea
[3] Pusan Natl Univ, Dept Nano Fus Technol, Pusan 609735, South Korea
[4] Pusan Natl Univ, Dept Nanomechatron Engn, Pusan 609735, South Korea
来源：
MODERN PHYSICS LETTERS B | 2015年 / 29卷 / 6-7期
关键词：
Notch radius; fracture load; piezoelectric ceramic; three-point bending test; crack energy density; finite element method; CRACK ENERGY DENSITY; CRITERIA;
D O I：
10.1142/S0217984915400060
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The influence of root radius of notch applied fracture load on piezoelectric ceramics under various conditions of electric fields was studied using the three-point bending test. And the linear finite element analysis associated with energy density of crack as a feasible parameter of fracture was performed with piezoelectricity. It was found that the fracture load is decreased according to reduction of the curvature radius of notch but the finite element analysis showed reverse result, the fracture load in case of the crack is increased. The energy density of crack as the governing fracture parameter was finally introduced and discussed.
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收藏
页数：6
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