| 摘要 |
1480928 Fibre reinforced resin tubes MESSERSCHMITT - BOLKOW - BLOHM GmbH 18 Dec 1974 [19 Dec 1973] 54739/74 Heading F2P [Also in Divisions B4-B5] A laminated structural element comprises shells 9, 10 of fibre-reinforced resin wherein two orthogonal sets 12, 13 of parallel reinforcing fibres are provided and a reticular core comprising crossing sets 14 of parallel resin-impregnated rovings, each set of rovings being at an angle to each set of reinforcing fibres. Tubular articles, in which the rovings lie in the direction of torsional stress, may be made by winding techniques. |
