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New insights into the synergistic influence of voids and interphase characteristics on effective properties of unidirectional composites

机译：新见解对空隙和相互特性的协同影响，对单向复合材料有效性质

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摘要

Micro-voids are common imperfections generated during manufacturing or prolonged service of composites. The present paper emphasizes on the effect of not only matrix-pores, but also the interphase-defects on the effective stiffness of unidirectional fiber-reinforced composites (UFRCs). To this aim, a hierarchical modeling of porous UFRCs is established, in which an interphase model is incorporated to characterize the linkage among the fiber content, the content and properties of the interphase, as well as the trait of the interphase-pores. An effective and easy-to-implement two-step homogenization scheme, based on Mori-Tanaka method and Huang's bridging method, is developed for the effective properties of such porous UFRCs. Comparison studies against available experimental data are conducted to demonstrate the validity of the proposed model. Afterwards, detailed parametric analyses are performed, and new insights into the effect of pores on UFRCs are provided, which may have important implications in the further manufacturing and defects speculation of composites.
机译：微空隙是在制造或长时间的复合材料中产生的常见缺陷。本文强调不仅是矩阵孔的影响，还强调了单向纤维增强复合材料的有效刚度的差异缺陷（UFRC）。为此目的，建立了多孔UFRC的层次建模，其中结合间隔模型以表征纤维含量的连杆，间隔的内容和性质以及闭合孔的特征。基于Mori-Tanaka方法和黄桥接方法的有效且易于实施的两步均质化方案用于此类多孔UFRC的有效特性。对可用实验数据进行比较研究以证明所提出的模型的有效性。之后，提供了详细的参数分析，提供了新的洞察，并提供了孔对UFRC的影响，这可能在进一步的制造和复合材料涂布中具有重要意义。

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  • 来源
    《Composite Structures》 |2021年第2期|112862.1-112862.13|共13页
  • 作者

    Wang Kui; Lu Yue; Rao Yanni; Wei Ning; Ban Jing; Peng Yong; Yao Song; Ahzi Said;

  • 作者单位

    Cent South Univ Sch Traff & Transportat Engn Key Lab Traff Safety Track Minist Educ Changsha 410075 Peoples R China|Cent South Univ Joint Int Res Lab Key Technol Rail Traff Safety Changsha 410075 Peoples R China;

    Cent South Univ Sch Traff & Transportat Engn Key Lab Traff Safety Track Minist Educ Changsha 410075 Peoples R China|Cent South Univ Joint Int Res Lab Key Technol Rail Traff Safety Changsha 410075 Peoples R China;

    Cent South Univ Sch Traff & Transportat Engn Key Lab Traff Safety Track Minist Educ Changsha 410075 Peoples R China|Cent South Univ Joint Int Res Lab Key Technol Rail Traff Safety Changsha 410075 Peoples R China;

    Cent South Univ Sch Traff & Transportat Engn Key Lab Traff Safety Track Minist Educ Changsha 410075 Peoples R China|Cent South Univ Joint Int Res Lab Key Technol Rail Traff Safety Changsha 410075 Peoples R China;

    Cent South Univ Sch Traff & Transportat Engn Key Lab Traff Safety Track Minist Educ Changsha 410075 Peoples R China|Cent South Univ Joint Int Res Lab Key Technol Rail Traff Safety Changsha 410075 Peoples R China;

    Cent South Univ Sch Traff & Transportat Engn Key Lab Traff Safety Track Minist Educ Changsha 410075 Peoples R China|Cent South Univ Joint Int Res Lab Key Technol Rail Traff Safety Changsha 410075 Peoples R China;

    Cent South Univ Sch Traff & Transportat Engn Key Lab Traff Safety Track Minist Educ Changsha 410075 Peoples R China|Cent South Univ Joint Int Res Lab Key Technol Rail Traff Safety Changsha 410075 Peoples R China;

    Univ Strasbourg ICUBE Lab CNRS F-67000 Strasbourg France;

  • 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

    UFRCs; Interphase-pores; Matrix-pores; Effective moduli; Overlapping effect;

    机译：UFRCS;差异孔隙;矩阵孔;有效的moduli;重叠效果;

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