期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 90, 期 -, 页码 577-588出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2016.08.028
关键词
Carbon fibre; 3-Dimensional reinforcement; Damage mechanics; Mechanical testing
资金
- University of Manchester (UoM)
- Baseline Research Funds from King Abdullah University of Science and Technology (KAUST)
- EPSRC [EP/I033513/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I033513/1] Funding Source: researchfish
Three different architectures of 3D carbon fibre woven composites (orthogonal, ORT; layer-to-layer, LTL; angle interlock, AI) were tested in quasi-static uniaxial tension. Mechanical tests (tensile in on-axis of warp and weft directions as well as 45 degrees off-axis) were carried out with the aim to study the loading direction sensitivity of these 3D woven composites. The z-binder architecture (the through-thickness reinforcement) has an effect on void content, directional fibre volume fraction, mechanical properties (on-axis and off-axis), failure mechanisms, energy absorption and fibre rotation angle in off-axis tested specimens. Out of all the examined architectures, 3D orthogonal woven composites (ORT) demonstrated a superior behaviour, especially when they were tested in 45 degrees off-axis direction, indicated by high strain to failure (similar to 23%) and high translaminar energy absorption (similar to 40 MJ/m(3)). The z-binder yarns in ORT architecture suppress the localised damage and allow larger fibre rotation during the fibre scissoring motion that enables further strain to be sustained by the in-plane fabric layers during off-axis loading. (C) 2016 Elsevier Ltd. All rights reserved.
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