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    Effect of stitch density on fatigue characteristics and damage mechanisms of stitched carbon/epoxy composites

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    Type
    Article
    Authors
    Yudhanto, Arief cc
    Watanabe, Naoyuki
    Iwahori, Yutaka
    Hoshi, Hikaru
    KAUST Department
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2014-05
    Permanent link to this record
    http://hdl.handle.net/10754/563517
    
    Metadata
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    Abstract
    The effect of stitch density (SD) on fatigue life, stiffness degradation and fatigue damage mechanisms in carbon/epoxy (T800SC/XNRH6813) stitched using Vectran thread is presented in this paper. Moderately stitched composite (SD = 0.028/mm2; 'stitched 6 × 6') and densely stitched composite (SD = 0.111/mm2; 'stitched 3 × 3') are tested and compared with composite without stitch thread (SD = 0.0; 'unstitched'). The experiments show that the fatigue life of stitched 3 × 3 is moderately better than that of unstitched and stitched 6 × 6. Stitched 3 × 3 pattern is also able to postpone the stiffness degradation onset. The improvement of fatigue properties and postponement of stiffness degradation onset in stitched 3 × 3 is primarily due to an effective impediment of edge-delamination. Quantification of damage at various cycles and stress levels shows that stitch density primarily affects the growth rate of delamination. © 2014 Elsevier Ltd. All rights reserved.
    Citation
    Yudhanto, A., Watanabe, N., Iwahori, Y., & Hoshi, H. (2014). Effect of stitch density on fatigue characteristics and damage mechanisms of stitched carbon/epoxy composites. Composites Part A: Applied Science and Manufacturing, 60, 52–65. doi:10.1016/j.compositesa.2014.01.013
    Sponsors
    Authors would like to thank Tokyo Metropolitan Government under the project of Asian Network of Major Cities 21 (ANMC21) for the financial support.
    Publisher
    Elsevier BV
    Journal
    Composites Part A: Applied Science and Manufacturing
    DOI
    10.1016/j.compositesa.2014.01.013
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.compositesa.2014.01.013
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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