| 摘要 |
<p>An FRP structure body having a plurality of sheets of core material laminated in a thickness direction and an FRP skin layer disposed on at least one side of the core material; an FRP structure body comprising a pair of spaced-apart sheets, at least one sheet containing FRP, and a seamless, enclosed hollow core material contained in the space; production methods for these FRP structure bodies; and a method of repairing an FRP structure body, wherein, when a portion not impregnated with resin is found on the surface of the body, the non-impregnated portion is entirely covered with a bag base material, the inside covered with the bag base material is vacuumized and resin is injected into the inside for impregnating into the non-resin-impregnated portion of a reinforcing fiber base material. A multiple-layer core structure allows an easy formation of a comparatively large FRP structure body having curved surfaces. An FRP structure body containing a seamless, enclosed hollow core material has lightweight and high-strength features and can be easily formed by a vacuum RTM method. The above repairing method permits an easy, low-cost repairing without sacrifice in strength to thereby reduce the production costs of an FRP structure body.</p> |
