Residual Thermal Stresses in Bonded Metal and Fiber-Reinforced Plastic Systems

    Volume 3, Issue 4 (December 1981)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 7


    Yaniv, G
    Graduate student and professor, Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa,

    Ishai, O
    Graduate student and professor, Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa,

    Abstract

    A model of a nonsymmetrical bonded fiber-reinforced plastic (FRP) metal system was investigated, both theoretically and experimentally, to study the effects of curing, thermal history, and material characteristics on its thermoelastic behavior. It was found that a simplified closed form solution is sufficient for the prediction of the adherends' residual thermal stresses, while a numerical finite element solution is the best approach for determining the interlaminar stresses present in the boundary zones of the adhesive layer. In these zones the shear and lateral tensile stresses (peel) reach their respective maximum values, which are eventually the cause of the interlaminar failure mode of the adhesive layer under subsequent thermomechanical loading.

    It was confirmed by both the numerical solution and the experimental results of the model deflection that adhesive characteristics have almost no effect either on the stresses in the adherends or on the overall thermoelastic deformation behavior of the bonded system.


    Paper ID: CTR10742J

    DOI: 10.1520/CTR10742J

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    Author
    Title Residual Thermal Stresses in Bonded Metal and Fiber-Reinforced Plastic Systems
    Symposium , 0000-00-00
    Committee D30