Interlaminar toughness characterisation of 3D woven carbon fibre composites

被引:40
|
作者
Fishpool, D. T. [1 ]
Rezai, A. [1 ]
Baker, D. [1 ]
Ogin, S. L. [2 ]
Smith, P. A. [2 ]
机构
[1] BAE Syst, Adv Technol Ctr, Bristol BS34 7QW, Avon, England
[2] Univ Surrey, Fac Engn & Phys Sci, Guildford GU2 7XH, Surrey, England
基金
英国工程与自然科学研究理事会;
关键词
CFRP; Interlaminar toughness; Woven fabric; R-curve; Double cantilever beam; TENSILE FATIGUE PROPERTIES; DELAMINATION TOUGHNESS; FRACTURE-TOUGHNESS; FIXTURE COMPLIANCE; DAMAGE; COMPRESSION; FRICTION; BEHAVIOR; 3-POINT;
D O I
10.1179/1743289812Y.0000000036
中图分类号
TB33 [复合材料];
学科分类号
摘要
The addition of reinforcement in the through thickness direction using three-dimensional (3D) weaving techniques has been shown to improve the delamination toughness of composite materials, mitigating the reduced out of plane performance of traditional composite materials. At present, the optimum architecture for improving delamination resistance is uncertain. To address this, three geometries of 3D woven carbon fibre reinforced epoxy composites were evaluated in mode I using the double cantilever beam test method. Mode II testing was also carried out using the end loaded split and four-point end notch flexure test methods. For large delaminations (i.e. when the R curve reaches its plateau value), an orthogonal weave is found to be most effective in resisting delamination propagation in mode I and is comparable to the layer to layer architecture in mode II. In all cases, an angle interlock weave appears to be less effective than either the orthogonal or layer to layer weaves.
引用
收藏
页码:108 / 114
页数:7
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