| 摘要 |
PROBLEM TO BE SOLVED: To efficiently strengthen a high stress generation part in addition to the improvement of toughness, the elimination of a dimensional limit, and the prevention of a drop in the strength of laminar shear strength by orienting reinforcing fiber according to a three-dimensional way and changing an orientation ratio for the reinforcing fiber, depending on the distance thereof from a disk center. SOLUTION: A disk 1 is made of a ceramic composite material and reinforcing fiber 5 arranged in the disk 1 is orientated in a three-dimensional way in a cylinder coordinate system (r: radial direction, q: peripheral direction, z: rotational axis direction). The reinforcing fiber 5 thus woven is impregnated with a matrix 6 of a ceramic material. Multiple-woven fabric and n-axis three- dimensional fabric or the like are considered as a way for weaving the reinforcing fiber 5. Also, the reinforcing fiber 5 is woven, so as to increase the orientation ratio in a radial direction (r) and to reduce the orientation ratio in a peripheral direction, according to the increase of a distance from the center of the disk 1. Furthermore, inorganic lint, carbon fiber or the like is used as the reinforcing fiber 5. |
