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The influence of variability and defects on the mechanical performance of tailorable composites
Journal of Composite Materials ( IF 2.9 ) Pub Date : 2019-09-23 , DOI: 10.1177/0021998319862855
James M Finley 1 , Joël Henry 1 , Milo SP Shaffer 2 , Soraia Pimenta 1
Affiliation  

Aligned hybrid-fibre discontinuous composites offer the ability to tailor their mechanical response through careful microstructural design. However, with tailorability comes microstructural complexity, which in turn leads to many sources of variability and defects. A virtual testing framework was further extended to investigate the influence of variability and defects on the mechanical performance of various aligned discontinuous composite material systems. This approach identified the most critical sources of variability as (i) fibre strength, (ii) the distance between fibre ends, or (iii) the level of fibre-type intermingling, depending on the material system. Fibre vacancy defects were shown to have the most significant influence on the strength and ductility of aligned discontinuous composites, although this sensitivity can be reduced through hybridisation of the fibre types.

中文翻译:

可变性和缺陷对可剪裁复合材料力学性能的影响

对齐的混合纤维不连续复合材料能够通过仔细的微观结构设计来调整其机械响应。然而,可裁剪性带来了微观结构的复杂性,这反过来又导致了许多可变性和缺陷的来源。进一步扩展了虚拟测试框架以研究可变性和缺陷对各种对齐的不连续复合材料系统的机械性能的影响。这种方法确定了最关键的可变性来源为 (i) 纤维强度,(ii) 纤维末端之间的距离,或 (iii) 纤维类型混合的水平,具体取决于材料系统。纤维空位缺陷对排列不连续复合材料的强度和延展性影响最大,
更新日期:2019-09-23
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