抄録
This paper describes evaluation method of fracture properties of fiber-reinforced self-healing ceramics. Fiber-reinforced self-healing ceramics (shFRC) are considered to be one of the most attractive candidates for next generation structural materials using at high temperature, e.g. turbine blade of the jet engine, exhaust component of car engine etc. The shFRC consist of three components, which are oxide fiber bundle, oxide matrix and self-healing agent interlayer. As the self-healing reaction occurs at only the interlayer, it is necessary that crack propagation should be led into the interlayer. As a result, shFRC exhibit quite complex fracture behavior. In order to assess the structural integrity of shFRC accurately, the correct fracture toughness including the complex fracture manner is extremely needed. In the present study, the fracture toughness and the fracture behavior of shFRC were investigated by using the beam with chevron notch. In addition, the self-healing effect on the fracture toughness was discussed.
