To provide a cylindrical-shape fiber-reinforced resin composite material formed by winding a fiber-reinforced resin or a fiber-reinforced resin sheet around a core member, capable of obtaining proper strength characteristics to tensile stress or compression stress acting on each side face when a vehicle collides.SOLUTION: A cylindrical-shape fiber-reinforced resin composite material which is applied to a vehicle body structure and which has a lengthwise direction includes: first fibers placed along the axial direction of the cylindrical shape; and second fibers wound across the entire circumference along the direction intersecting with the axial direction of the cylindrical shape. The number of first fibers per unit area in a tensile surface that mainly receives tensile stress when a vehicle collides is larger than the number of first fibers per unit area in a compression surface that mainly receives compression stress when the vehicle collides.SELECTED DRAWING: Figure 4

    【課題】芯材の周囲に繊維強化樹脂や繊維強化樹脂シートを巻回して形成される筒状の繊維強化樹脂複合材において、車両の衝突時にそれぞれの側面に作用する引張応力又は圧縮応力に対して適切な強度特性を得ることが可能な繊維強化樹脂複合材を提供する。【解決手段】車体構造に用いられる長手方向を有する筒状の繊維強化樹脂複合材は、筒状の軸方向に沿って配置された第1の繊維と、筒状の軸方向に交差する方向に沿って全周面に渡って巻回された第2の繊維と、を含み、車体の衝突時に主として引張応力を受ける引張面における単位面積当たりの第1の繊維の数が、車体の衝突時に主として圧縮応力を受ける圧縮面における単位面積当たりの前記第1の繊維の数よりも多い。【選択図】図4


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    Title :

    FIBER-REINFORCED RESIN COMPOSITE MATERIAL AND METHOD FOR MANUFACTURING FIBER-REINFORCED RESIN COMPOSITE MATERIAL


    Additional title:

    繊維強化樹脂複合材及び繊維強化樹脂複合材の製造方法


    Contributors:

    Publication date :

    2021-04-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / F16F SPRINGS , Federn





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