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    Development of an engineering model for predicting the transverse coefficients of thermal expansion of unidirectional fiber reinforced composites

    Access Status
    Fulltext not available
    Authors
    Dong, Chensong
    Date
    2009
    Type
    Journal Article
    
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    Citation
    Dong, Chensong. 2009. Development of an engineering model for predicting the transverse coefficients of thermal expansion of unidirectional fiber reinforced composites. Transactions of the ASME, Journal of Engineering Materials and Technology 131 (3): pp. 1-7.
    Source Title
    Transactions of the ASME, Journal of Engineering Materials and Technology
    ISSN
    0094-4289
    Faculty
    School of Engineering
    Faculty of Science and Engineering
    Department of Mechanical Engineering
    Remarks

    The article is available in ASME's Digital Library at : http://asmedl.aip.org/Materials

    URI
    http://hdl.handle.net/20.500.11937/12747
    Collection
    • Curtin Research Publications
    Abstract

    The coefficients of thermal expansion (CTEs) of fiber reinforced composites play animportant role in the design and analysis of composite structures. Since the thermalexpansion coefficients of polymer matrix materials are typically much higher than thoseof fibers, and the fiber often exhibits anisotropic thermal and mechanical properties, thestress induced in the composite due to temperature change is very complex. Large discrepanciesexist among the analytical models for the transverse CTE of unidirectionalcomposites. Hence, it is problematic when choosing a suitable model. With the developmentof computer technologies, finite element analysis (FEA) proved its effectiveness incalculating the effective CTE of composites. In this study, the transverse CTEs of unidirectionalcarbon fiber composites were calculated by finite element analysis using arepresentative unit cell. The analytical micromechanical models from literature werecompared against the FEA data. It shows that Hashin’s concentric cylinder model is thebest. However, it is inconvenient for practical applications due to the amount of computation.In this study, based on the FEA data, an engineering model for predicting thetransverse CTE of unidirectional composites was developed by regression analysis. This model was validated against the FEA and experimental data. It shows that the developed model provides a simple and accurate approach to calculate the transverse CTE of unidirectional composites.

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