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Effects of aging on water and lubricating oil on the creep behavior of a GFRP matrix composite

机译：水和润滑油的老化对GFRP基复合材料蠕变行为的影响

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摘要

The creep behavior of an E-glass-polyester matrix composite was evaluated as a function of time of immersion in water and lubricant oil. The effect of the test temperature was also evaluated. It was observed that, after 6 and 14 months of exposure to the aging fluids, the Young's modulus of the composite was reduced by 20% regardless the aging fluid when the test was performed at room temperature. For the tests performed at 60 degrees C, the effects of immersion in lubricant oil were more severe than those after immersion in water. Variation of the creep behavior due to exposure to water was associated only to physical aging, because the properties' variation was correlated to the amount of absorbed water, decreasing only while the amount of water increased. The test temperature was shown to be the main parameter influencing the creep behavior of the composite. The action of the plasticizing effect of water and reduction of oil viscosity with temperature influenced the results of the steady creep rate when the tests were performed at 60 degrees C. Micromechanics approach was used to qualitatively explain the experimental results obtained.(C) 2017 Elsevier Ltd. All rights reserved.
机译：评估E-玻璃-聚酯基复合材料的蠕变行为，作为其在水中和润滑油中浸泡时间的函数。还评估了测试温度的影响。观察到，在老化液中暴露6个月和14个月后，在室温下进行试验时，无论老化液如何，复合材料的杨氏模量都会降低20％。对于在60摄氏度下进行的测试，浸入润滑油的效果要比浸入水中的效果更严重。由于暴露于水而引起的蠕变行为的变化仅与物理老化有关，因为这些特性的变化与吸收的水量相关，仅在水量增加时才减小。试验温度是影响复合材料蠕变性能的主要参数。当温度在60摄氏度下进行测试时，水的增塑作用和油粘度随温度降低的作用会影响稳定蠕变速率的结果。使用微力学方法定性解释了获得的实验结果。（C）2017 Elsevier有限公司。保留所有权利。

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  • 来源
    《Composite Structures》 |2017年第5期|285-291|共7页
  • 作者

    de Souza L. R.; Marques A. T.; dAlmeida J. R. M.;

  • 作者单位

    Pontificia Univ Catolica Rio de Janeiro, Dept Chem & Mat Engn, Rua Marques de Sao Vicente,225 Gavea, BR-22453900 Rio De Janeiro, RJ, Brazil;

    Univ Porto, Dept Mech Engn, Rua Dr Roberto Frias S-N, P-4200465 Oporto, Portugal;

    Pontificia Univ Catolica Rio de Janeiro, Dept Chem & Mat Engn, Rua Marques de Sao Vicente,225 Gavea, BR-22453900 Rio De Janeiro, RJ, Brazil;

  • 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

    Creep; Aging; Composites; Plasticizing effect; Temperature;

    机译：蠕变;老化;复合材料;塑化作用;温度;

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