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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50070

    Title: Effects of part geometry and injection molding conditions on the tensile properties of ultra-high molecular weight polyethylene polymer
    Authors: Kuo,HC;Jeng,MC
    Contributors: 機械工程學系
    Date: 2010
    Issue Date: 2012-03-27 17:02:49 (UTC+8)
    Publisher: 國立中央大學
    Abstract: In this study, the influences of process parameters and different cross-sectional dimensions on the tensile strength of specimens with and without a weld line are investigated. In addition, the weld line characteristics of structures with different cross-sections are explored as well. With the Taguchi method and confirmation test, it can be concluded that Taguchi method is suitable to improve the mechanical properties occurring in the injection molded UHMWPE parts. The single-factor experimental results indicate that the process parametric influence is relatively smaller than the cross-sectional dimensions on the tensile strength of specimens without weld line. The experimental observations present that the frictional heating can be enhanced the molecular bonding and self-diffusion in the frozen layer of two sides on the weld line region. The SEM images showed that the micro-voids, cracks and incomplete molecular bonding are the major surface defects on the weld line region. (C) 2009 Published by Elsevier Ltd.
    Relation: MATERIALS & DESIGN
    Appears in Collections:[機械工程學系] 期刊論文

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