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Structural ceramics are superior in high temperature strength and anticipated as leading materials for next generation energy machine. However, ceramics have disadvantage of brittleness, sensitive to flaw and low reliability. To overcome the disadvantages, the present authors proposed a new technology for the through life reliability guarantee concept. 1) Materials design with excellent self-crack-healing ability. 2) Through life reliability management process of ceramic components using self-crack-healing ability, proof test and compressive stress introduction. In this paper, each process is introduced.

Structural ceramics are superior in high temperature strength and anticipated as leading materials for next generation energy machine. However, ceramics have disadvantage of brittleness, sensitive to flaw and low reliability. To overcome the disadvantages, the present authors proposed a new technology for the through life reliability guarantee concept. 1) Materials design with excellent self-crack-healing ability. 2) Through life reliability management process of ceramic components using self-crack-healing ability, proof test and compressive stress introduction. In this paper, each process is introduced.