| 摘要 |
PROBLEM TO BE SOLVED: To provide a hollow FRP pipe which prevents wrinkling, a cause of strength deterioration of FRP pipes, and uses two axes or more of a reinforcing fiber.SOLUTION: In lamination of an FRP pipe, a square shape is prepared preliminarily by assigning the same angles to a cloth prepreg sheet of a reinforcing fiber so as to match the orientation angles of the fiber from the pipe longitudinal direction (reference direction), and the prepared cloth prepreg sheet is laminated by winding around a core metal. The configuration enables imparting fiber anisotropy to the FRP pipe without spiral lamination of the cloth prepreg sheet around the core metal and allows lamination without occurrence of wrinkles. |
