Fracture toughness of multiferroic composite materials

被引：7
|
作者：
Liu, Yulan [1 ]
Lu, Xiaoyan [2 ]
Wang, Biao [1 ,2 ]
机构：
[1] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
[2] Harbin Inst Technol, Dept Appl Mech, Harbin 150006, Peoples R China
来源：
ENGINEERING FRACTURE MECHANICS | 2008年 / 75卷 / 17期
基金：
中国国家自然科学基金;
关键词：
Fiber reinforced materials; Multiferroic; Energy release rate;
D O I：
10.1016/j.engfracmech.2008.06.027
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Fracture toughness of unidirectional ferromagnetic fiber reinforced ferroelectric matrix composite was studied based on the energy approach in a view of large scale. A half space edge crack with crack face perpendicular to the external fields was considered. The energy release rate was derived explicitly considering the magnetoelectric coupling under combined mechanical, electric and magnetic loading. Because of the magnetoelectric coupling through the interface, the fracture toughness is highly dependent on the polarization properties of the ferroelectric and ferromagnetic portions besides the volume fraction and the elastic properties of each composite. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4973 / 4977
页数：5
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