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Evaluation of sensitivity for detecting different failure modes of epoxy matrix composites doped with graphene nanoparticles

机译：评价掺杂石墨烯纳米粒子的环氧树脂基复合材料不同失效模式的敏感性

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摘要

In recent years, the interest in monitoring the damage of composite materials by measuring the variation of electrical resistance is increasing because deformations and cracks generated in the structure produce changes in the electrical conductivity of the material.In this work, the structural integrity of glass fiber composite materials with epoxy matrix doped with graphene nanoparticles is evaluated under in plane tests (interlaminar shear tests and fracture propagation tests in mode I and II). The results demonstrated the ability of graphene nanoparticles to form conducive networks in the epoxy resin with auto-detection capability of deformation and damage. In the interlaminar shear tests, permanent changes in resistance were associated to strain and delamination produced during the test. In the case of fracture tests in mode I and II, the electrical resistance increased as the crack grew. The use of multiple electrodes has also allowed locating the area of damage generation in the material. Finally, the electrical response of discontinuities generated out of plane of the laminate was analyzed by means of cuts through the material.
机译：近年来，由于测量结构中产生的变形和裂缝会导致材料的电导率发生变化，因此通过测量电阻变化来监测复合材料的损坏的兴趣正在增加。在平面测试（层间剪切测试和模式I和II中的断裂扩展测试）下评估了掺有石墨烯纳米粒子的环氧基质的复合材料。结果表明，石墨烯纳米颗粒能够在环氧树脂中形成导电网络，并具有变形和损伤的自动检测功能。在层间剪切试验中，电阻的永久变化与试验期间产生的应变和分层有关。在模式I和II下的断裂测试中，电阻随着裂纹的增加而增加。使用多个电极还可以定位材料中产生损伤的区域。最后，通过切开材料来分析在层压板平面外产生的不连续性的电响应。

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  • 来源
    《Composite Structures》 |2019年第10期|111167.1-111167.6|共6页
  • 作者

    Sanchez M.; Moriche R. B.; Prolongo S. G. A.; Marron A. R.; Jimenez-Suarez A.; Urena A.;

  • 作者单位

    Univ Rey Juan Carlos, Mat Sci & Engn Area, C Tulipan S-N, Madrid 28933, Spain;

    Univ Rey Juan Carlos, Mat Sci & Engn Area, C Tulipan S-N, Madrid 28933, Spain|Univ Seville, Dept Ingn & Ciencia Mat & Transporte, Avda Camino Descubrimientos S-N, Seville 41092, Spain;

    Univ Rey Juan Carlos, Mat Sci & Engn Area, C Tulipan S-N, Madrid 28933, Spain;

    Univ Rey Juan Carlos, Mat Sci & Engn Area, C Tulipan S-N, Madrid 28933, Spain;

    Univ Rey Juan Carlos, Mat Sci & Engn Area, C Tulipan S-N, Madrid 28933, Spain;

    Univ Rey Juan Carlos, Mat Sci & Engn Area, C Tulipan S-N, Madrid 28933, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Graphene nanoplatelets; Electrical properties; Functional composites; Damage sensing;

    机译：石墨烯纳米片;电性能;功能复合材料;损伤感应;

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