Abstract In this paper, based on Huang's bridging model (Huang Z-M, 2001), an effective and concise analytical prediction scheme for effective elastic properties of fuzzy fiber reinforced composites' (FFRCs), is presented. The distinctive constructional feature of the FFRCs, herein, is that the fuzzy fibers are continuous, aligned, and having wavy nanofillers (like CNTs) grown radially on the circumferential surfaces. By means of the proposed approach, two-scale interphase effects on the overall properties of FFRCs are investigated, including the CNTs/matrix interphase and the fuzzy interphase surrounding the micro-fibers. Meanwhile, the size effect and the waviness effect of nanofillers are evaluated. The accuracy and effectiveness of this prediction scheme is validated by comparisons with the existing experimental data and analytical results. A thorough parametric study indicates that the introduction of slender nanofillers into the micro-fiber/matrix interfacial zone, indeed, leads to significant enhancement to the transverse and shear performance of the composite. Moreover, such enhancement depends on some major parameters, including the contents of the two-scale reinforcements, the stiffness of the two-scale interphase, CNT waviness, as well as the radius and length of CNTs. Those findings may have important implications in the future design of FFRCs.

中文翻译：

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两尺度相间模糊纤维增强复合材料有效性能的分层预测方案：基于三相桥接模型

摘要 本文基于Huang 的桥接模型(Huang ZM, 2001)，提出了一种有效且简洁的模糊纤维增强复合材料(FFRCs) 有效弹性性能的分析预测方案。在此，FFRC 的独特结构特征是绒毛纤维是连续的、对齐的，并且具有在圆周表面径向生长的波浪状纳米填料（如 CNT）。通过所提出的方法，研究了两尺度界面对 FFRC 整体性能的影响，包括碳纳米管/基质界面和围绕微纤维的模糊界面。同时，评估了纳米填料的尺寸效应和波纹效应。通过与现有实验数据和分析结果的比较，验证了该预测方案的准确性和有效性。一项彻底的参数研究表明，将细长的纳米填料引入微纤维/基质界面区，确实会显着提高复合材料的横向和剪切性能。此外，这种增强取决于一些主要参数，包括两尺度增强物的含量、两尺度界面的刚度、碳纳米管波纹度以及碳纳米管的半径和长度。这些发现可能对未来 FFRC 的设计具有重要意义。显着提高复合材料的横向和剪切性能。此外，这种增强取决于一些主要参数，包括两尺度增强物的含量、两尺度界面的刚度、碳纳米管波纹度以及碳纳米管的半径和长度。这些发现可能对未来 FFRC 的设计具有重要意义。显着提高复合材料的横向和剪切性能。此外，这种增强取决于一些主要参数，包括两尺度增强物的含量、两尺度界面的刚度、碳纳米管波纹度以及碳纳米管的半径和长度。这些发现可能对未来 FFRC 的设计具有重要意义。