PROBLEM TO BE SOLVED: To reduce residual shearing stress of a thermosetting adhesive for adhering a reinforcement material to a surface of a metallic component.SOLUTION: A metal-CFRP (Carbon Fiber-Reinforced Plastic) composite member 11 is formed by adhering a CFRP-made reinforcement material 13 obtained by laminating a plurality of fiber layers to a surface of a metallic member 12 using a thermosetting adhesive 14. Residual shearing stress is generated in the thermosetting adhesive 14 due to difference between a thermal expansion coefficient of the metallic member 12 and that of the reinforcement material 13 when the thermosetting adhesive 14 is cooled to a room temperature after heated and cured, the thermosetting adhesive 14 is broken as a result, which is possibly a factor for strength reduction. The metal-CFRP composite member 11 is composed of a body part 13a where the reinforcement material 13 has approximately constant thickness and a residual shearing stress relaxation part 13b where the thickness is gradually reduced from the body part 13a to an edge, so that residual shearing stress of the edge part of the thermosetting adhesive 14 is reduced by the residual shearing stress relaxation part 13b of the reinforcement material 13 when the thermosetting adhesive 14 is cooled to room temperature after heated and cured and strength reduction due to breakage of the thermosetting adhesive 14 is prevented.SELECTED DRAWING: Figure 1

    【課題】 金属部材の表面に補強材を接着する熱硬化性接着剤の残留剪断応力を低減する。【解決手段】 金属−CFRP複合部材11は、複数の繊維層を積層したCFRP製の補強材13を熱硬化性接着剤14で金属部材12の表面に接着したものであり、熱硬化性接着剤14を加熱硬化させた後に常温まで冷却したときに、金属部材12および補強材13の熱膨張率の差によって熱硬化性接着剤14に残留剪断応力が発生し、熱硬化性接着剤14が破断して強度低下の要因となる可能性がある。本発明の金属−CFRP複合部材11は、補強材13が略一定厚さを有する本体部13aと、本体部13aから端縁に向けて徐々に厚さが減少する残留剪断応力緩和部13bとからなるので、熱硬化性接着剤14を加熱硬化させた後に常温まで冷却したときに、補強材13の残留剪断応力緩和部13bによって熱硬化性接着剤14の端縁部の残留剪断応力が減少し、熱硬化性接着剤14の破断による強度低下が防止される。【選択図】 図1


    Access

    Download


    Export, share and cite



    Title :

    METAL-CFRP COMPOSITE MEMBER


    Additional title:

    金属−CFRP複合部材


    Contributors:

    Publication date :

    2017-03-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / B62D MOTOR VEHICLES , Motorfahrzeuge



    METAL-RESIN COMPOSITE MEMBER

    IZUMI TOSHITAKA / YOSHIDA HIDETAKA / NOMA NAOHIRO | European Patent Office | 2020

    Free access

    METAL-RESIN COMPOSITE MEMBER

    IZUMI TOSHIKI / YOSHIDA HIDETAKA / NOMA NAOMUNE | European Patent Office | 2020

    Free access

    CFRP Small ship hull production using carbon fiber composite material CFRP

    JEON HYEONG JIN | European Patent Office | 2023

    Free access

    Exploring New Joining Techniques of CFRP Cross Member Chassis

    Dossett, Wesley / Krsikapa, Daniel / Jalayer, Shayan et al. | British Library Conference Proceedings | 2022


    Exploring New Joining Techniques of CFRP Cross Member Chassis

    Dossett, Wesley / Krsikapa, Daniel / Jalayer, Shayan et al. | British Library Conference Proceedings | 2022