Damage detection in 2.5D C/SiC composites using electrical resistance tomography

被引：24
作者：
Gao, Xiguang [1 ,2 ]
Wei, Tingting [1 ,2 ]
Dong, Hongnian [1 ,2 ]
Song, Yingdong [1 ,2 ,3 ]
机构：
[1] Minist Ind & Informat Technol, Key Lab Aeroengine Thermal Environm & Struct, Nanjing 210016, Jiangsu, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing 210016, Jiangsu, Peoples R China
[3] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2019年 / 39卷 / 13期
基金：
中国国家自然科学基金;
关键词：
Electrical resistance tomography; Fiber-reinforced ceramic matrix composites; Damage detection; Spatial resistivity mapping; IMPEDANCE TOMOGRAPHY; PATTERNS;
D O I：
10.1016/j.jeurceramsoc.2019.04.046
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：
In this work, an innovative method for the detection of damage in fiber-reinforced ceramic matrix composites (CMCs) is introduced. For electrically conductive CMCs, the conductivity distribution is coupled with the internal damage, which enables the realization of structural health monitoring (SHM). In this research, we verify the feasibility of using electrical resistance tomography (ERT) for damage detection in CMCs. The nature of conductivity anisotropy was considered. Local damage was introduced and was evaluated through ERT. Different injection patterns and values of the regulation parameter were compared to obtain optimal spatial resistivity mapping imaged via ERT. The effect of typical damage states on the resistivity was quantified to determine the theoretical resolution of ERT for damage detection in the 2.5D C/SiC composite. The present study serves as a further step into introducing ERT as a promising SHM method which can be implemented to CMCs for in situ and non-destructive inspection.
引用
收藏
页码：3583 / 3593
页数：11
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