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首页> 外文期刊>Materials & design >The effects of through-the-thickness stitching on theMode I interlaminar fracture toughness of flax/epoxy composite laminates
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The effects of through-the-thickness stitching on theMode I interlaminar fracture toughness of flax/epoxy composite laminates

机译：厚度缝合对亚麻/环氧复合材料层压板的I型层间断裂韧性的影响

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摘要

The effects of through-the-thickness stitching using natural fibres on the interlaminar fracture toughness and tensile properties of flax fibre/epoxy composite laminates were experimentally studied. Flax yarn and cotton thread were used to stitch preforms of woven fabric and unidirectional flax fibre laminates in various stitch densities. Tensile and Double Cantilever Beam(DCB) tests were conducted to characterise the in-plane tensile properties and the Mode I interlaminar fracture toughness, respectively. The effects of the in-plane fibre architecture on the delamination resistance of the composite laminates were also investigated. The results showed that the reduction in tensile properties of the composites due to imperfections caused by stitching was almost identical for both stitch materials. The DCB test results revealed that cotton thread stitch does not necessarily improve the interlaminar fracture toughness of the composite, however stitching with flax yarn can improve it by at least 10% at the lowest stitch fibre areal fraction. (C) 2016 Elsevier Ltd. All rights reserved.
机译：实验研究了天然纤维的全厚度缝合对亚麻纤维/环氧树脂复合层压板的层间断裂韧性和拉伸性能的影响。亚麻纱线和棉线用于以各种缝合密度缝合机织预成型坯和单向亚麻纤维层压材料。进行了拉伸和双悬臂梁（DCB）测试以分别表征面内拉伸性能和I型层间断裂韧性。还研究了面内纤维结构对复合层压板的抗分层性的影响。结果表明，两种缝合材料由于缝合造成的缺陷而导致复合材料拉伸性能的降低几乎相同。 DCB测试结果表明，棉线缝制不一定能改善复合材料的层间断裂韧性，但是用亚麻纱线缝制可以在最低的缝制纤维面积分数下将其至少提高10％。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Materials & design》 |2016年第5期|659-669|共11页
  • 作者

    Ravandi M.; Teo W. S.; Tran L. Q. N.; Yonga M. S.; Tay T. E.;

  • 作者单位

    Natl Univ Singapore, Dept Mech Engn, 9 Engn Dr 1, Singapore 117575, Singapore|ASTAR, Singapore Inst Mfg Technol, Fusionopolis Way,Innovis Tower, Singapore 138634, Singapore;

    ASTAR, Singapore Inst Mfg Technol, Fusionopolis Way,Innovis Tower, Singapore 138634, Singapore;

    ASTAR, Singapore Inst Mfg Technol, Fusionopolis Way,Innovis Tower, Singapore 138634, Singapore;

    Natl Univ Singapore, Dept Mech Engn, 9 Engn Dr 1, Singapore 117575, Singapore|ASTAR, Singapore Inst Mfg Technol, Fusionopolis Way,Innovis Tower, Singapore 138634, Singapore;

    Natl Univ Singapore, Dept Mech Engn, 9 Engn Dr 1, Singapore 117575, Singapore;

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  • 正文语种 eng
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  • 关键词

    Flax fibre; Stitching; Mode I fracture toughness; Delamination; Mechanical properties;

    机译：亚麻纤维;缝合;I型断裂韧性;脱层;机械性能;

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