Characterisation of 3D woven composite internal architecture and effect of compaction

被引:75
作者
Mahadik, Y. [1 ]
Brown, K. A. Robson [1 ]
Hallett, S. R. [1 ]
机构
[1] Univ Bristol, Adv Composites Ctr Innovat & Sci, Bristol BS8 1TR, Avon, England
基金
英国工程与自然科学研究理事会;
关键词
3-Dimensional reinforcement; Fabrics/textiles; Radiography; Weaving; TOW GEOMETRY; FAILURE MECHANISMS; TENSILE PROPERTIES; CFRP COMPOSITES; COMPRESSION;
D O I
10.1016/j.compositesa.2010.02.019
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Yarn waviness and resin rich regions play a major role in 3D woven composite mechanical properties and failure. A detailed study of two angle interlock 3D woven carbon fabrics has been carried out to characterise these architectural features and how they change under increasing levels of compaction. Computerised tomography (CT) X-ray scanning was used to capture the internal architecture of the fabrics. The study focussed on the out-of-plane crimp of the yarns and the size and shape of resin rich regions in consolidated panels. Results showed areas of high local crimp at weft/weaver interlace points. This was exacerbated at low levels of compaction but was eventually lowered under higher compaction levels. The appearance of resin channels was found to be heavily dependent on weave style, with large resin pockets appearing in weaver yarn planes which decreased significantly in size under compaction with distinctive changes in profile. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:872 / 880
页数:9
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