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The behaviour of thermoplastic and thermoset carbon fibre composites subjected to low-velocity and high-velocity impact

机译:经受低速和高速冲击的热塑性和热固性碳纤维复合材料的行为

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摘要

The present paper describes the results from experimental and theoretical modelling studies on the behaviour of continuous carbon fibre/polymer matrix composites subjected to a relatively low-velocity or high-velocity impact, using a rigid, metallic impactor. Drop-weight and gas-gun tests are employed to conduct the low-velocity and high-velocity impact experiments, respectively. The carbon fibre composites are based upon a thermoplastic poly(ether-ether ketone) matrix (termed CF/PEEK) or a thermoset toughened epoxy matrix (termed CF/Epoxy), which has the same fibre architecture of a cross-ply [0(3)/90(3)](2s)lay-up. The studies clearly reveal that the CF/PEEK composites exhibit the better impact performance. Also, at the same impact energy of 10.5 +/- 0.3 J, the relatively high-velocity test at 54.4 +/- 1.0 m s(-1)leads to more damage in both types of composite than observed from the low-velocity test where the impactor struck the composites at 2.56 m s(-1). The computationally efficient, two-dimensional, elastic, finite element model that has been developed is generally successful in capturing the essential details of the impact test and the impact damage in the composites, and has been used to predict the loading response of the composites under impact loading.
机译:本文介绍了使用刚性金属撞击器对相对低速或高速冲击进行相对低速或高速冲击的连续碳纤维/聚合物基质复合材料的实验和理论建模研究的结果。采用滴重和燃气枪试验来分别进行低速和高速冲击实验。碳纤维复合材料基于热塑性聚(醚 - 醚酮)基质(称为CF / PEEK)或热固性钢化环氧基质(称为CF /环氧),其具有相同的交叉层的纤维架构[0( 3)/ 90(3)](2s)铺设。这些研究清楚地表明,CF / PEEK复合材料表现出更好的影响性能。此外,在相同的影响能量为10.5 +/- 0.3J,在54.4 +/- 1.0ms(-1)的相对高速试验中,两种类型的复合材料中的损坏导致比从低速度测试观察到的撞击器在2.56ms(-1)时将复合物击中。已经开发的计算上有效,二维的弹性,有限的有限元模型通常是成功的,在捕获反射测试的基本细节和复合材料中的冲击损伤,并且已被用于预测复合材料的加载响应冲击载荷。

著录项

  • 来源
    《Journal of Materials Science》 |2020年第33期|共28页
  • 作者单位

    Imperial Coll London Dept Mech Engn London SW7 2AZ England;

    Imperial Coll London Dept Mech Engn London SW7 2AZ England;

    Imperial Coll London Dept Mech Engn London SW7 2AZ England;

    First Aircraft Inst 1 East Renmin Rd Xian 710089 Shaanxi Peoples R China;

    Wuhan Univ Technol Sch Transportat Dept Naval Architecture Ocean &

    Struct Engn Wuhan 430063 Hubei Peoples R China;

    Xi An Jiao Tong Univ Sch Mech Engn Xian 710049 Shaanxi Peoples R China;

    Univ Nottingham Fac Engn Composites Res Grp Nottingham England;

    Imperial Coll London Dept Mech Engn London SW7 2AZ England;

    Imperial Coll London Dept Mech Engn London SW7 2AZ England;

    Imperial Coll London Dept Mech Engn London SW7 2AZ England;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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