The mechanical properties between three-dimensional (3D) braided and laminated composites were comparatively studied. These two sorts of composites were produced by the same carbon fiber, resin matrix and the same preparation process (RTM). There were totally four kinds
of 3D multi-directionally braided composites, which contain 3D four-direction (3D4d), 3D five-direction (3D5d), 3D six-direction (3D6d) and 3D seven-direction (3D7d) braiding respectively. And the three kinds of laminated composites manufactured utilizing tire cord fabric were 0°, 90°
and [0/(±45)2/90]2s laminates. The mechanical properties of braided and laminated specimens were measured by the same tension, compression and shear testing methods. The results show that the properties of laminated composites are worse than that of 3D-braided
composite except 0° unidirectional laminates. As to the braided composites, the smaller the braiding angle is, the better longitudinal properties and worse shear properties are. The braiding fabric is also an important factor which affects the mechanical properties. Meanwhile, the failure
modes were also discussed, and the results show that, braiding fabric and the braiding angle are the main factors that affect the failure mode.
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Document Type: Research Article
School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
Institute of Composite Materials, Tianjin Polytechnic University, Tianjin 300160, China
June 15, 2015
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Journal of Aeronautical Materials, founded in 1981, is sponsored by Chinese Society of Aeronautics and Astronautics, and edited and published by editiorial board of Journal of Aeronautical Materials,AVIC Beijing Institute of Aeronautical Material(BIAM).It has been indexed in Scopus (Holland), INSPEC (U.K.), AJ (Russia), CA (US) and UPD (US). Journal of Aeronutical Materials is devoted to reporting new and original experimental and theoretical basic research of aeronautical materials, such as composite design,technology,testing and charaacterizing, and so on.
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