| 摘要 |
PURPOSE:To provide an FRP panel with advantages such as light-weight, high strength and rigidity, and the low incidence of an interlayer separation between a skin part and a rib part. CONSTITUTION:In an FRP panel consisting of a skin part and ribs provided side by side to the other on the skin part, at least, three different types of the reinforcing fiber used for the skin part are such as the one having an orientation angle of 0 deg. and the others having + or -30 deg. to + or -60 deg., and 90 deg., given the extension direction of the rib as 0 deg.. In addition, the content ratio of the reinforcing fiber at each orientation angle is 40 to 70% for the orientation angle of 0 deg., 20 to 50% for + or -30 deg. to + or -60 deg., and 5 to 20% for 90 deg.. |
