Monitoring damage accumulation in ceramic matrix composites using electrical resistivity

 The electric resistance of woven SiC fiber-reinforced SiC matrix composites were measured under tensile loading conditions. The results show that the electrical resistance is closely related to damage and that real-time information about the damage state can be obtained through monitoring of the resistance. Such self-sensing capability provides the possibility of on-board/in situ damage detection and accurate life prediction for high-temperature ceramic matrix composites.