Damage detection in 2.5D C/SiC composites using electrical resistance tomography. Issue 13 (October 2019)

• Record Type: Journal Article
• Authors: Gao, Xiguang; Wei, Tingting; Dong, Hongnian; Song, Yingdong
• Is Part Of: Journal of the European Ceramic Society. Volume 39:Issue 13(2019)
• Page Start: 3583
• Page End: 3593
• Publication Date: 2019-10
• Subjects: Electrical resistance tomography -- Fiber-reinforced ceramic matrix composites -- Damage detection -- Spatial resistivity mapping; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2019.04.046
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: 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.