| 摘要 |
PROBLEM TO BE SOLVED: To provide manufacturing method of a pressure vessel capable of securely preventing the turbulence of orientation of fibers at the end part of a reinforcement for manufacturing an FRP pressure vessel which is provided with a roughly hemispherical dorm part with an opening part at its center and annular reinforcement coaxially with the opening. SOLUTION: In a manufacturing a pressure vessel, a fiber layer is formed on a mandrel corresponding to the inside form of the pressure vessel (motor case 1), a reinforcement 9 in which at least the end part on the large diameter side is formed in an outward tapered surface 9a is formed and, after the reinforcement 9 is overlapped on the surface of the fiber layer, another fiber layer is formed on the surfaces of the fiber layer and reinforcement 9. Thus fibers passing over the end part of the reinforcement 9 are not bent, and the strength of the fibers is prevented from lowering due to the turbulence of orientation of fibers. |
