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    Formation of Resin-Rich Zones in Composites Processing

    149810_Microsoft Word - 25835_Dong_MFMS2010_resin-rich.pdf (1.324Mb)
    Access Status
    Open access
    Authors
    Dong, Chensong
    Tsai, Tze
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Dong, Chensong and Tsai, Tze. 2010. Formation of Resin-Rich Zones in Composites Processing. Advanced Materials Research. 123-125: pp. 543-546.
    Source Title
    Advanced Materials Research
    ISSN
    1022-6680
    School
    Department of Mechanical Engineering
    Remarks

    Copyright © 2010 Trans Tech Publications.

    URI
    http://hdl.handle.net/20.500.11937/28843
    Collection
    • Curtin Research Publications
    Abstract

    Resin-rich zones are a common phenomenon in liquid composite molding processes. These resin-rich zones cause unwanted residual stress and deformation, and part-to-part variation, and thus they need to be studied in the design of composite structures. An experimental study on the formation of resin-rich zones in angled composite parts is presented in this paper. Two open-channel mold sets were designed and fabricated. Fiber preforms were loaded into these molds and the gaps formed were visually inspected by a microscope. The influences of corner radius, fiber volume fraction, enclosed angle, and stacking sequence were investigated, and significant factors affecting gap thickness were identified by Design of Experiments (DOE). It can be concluded from the experimental results that: 1) Fiber volume fraction is the most significant factor affecting gap thickness. Gap thickness is inversely proportional to fiber volume fraction; 2) Gap thickness is inversely proportional to radius; 3) The gap thickness of unidirectional preforms is larger than that of the cross-ply preforms.

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