抄録
A design guide is proposed to assure the safety and the reliability of fine ceramic components which operate under mechanical and thermal loads. The guide is intended to keep the fracture probability of components below a certain allowable level in the fast fracture. This is attained by satisfying a design formula written in the guide which limits the maximum stresses of some specific sections of the compoent to an allowable value. The allowable stress value is given by the combination of the material strength, three design factors and two safety factors. It should be noted that the proposed design guide is given only tentatively, and should be refined and extended through experiences.
