Full-field analysis of shear test on 3D orthogonal woven C/C composites |
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| Authors: | Lijun QinZhongwei Zhang Xiaofeng LiXiaoguang Yang Zhihai FengYang Wang Hong MiaoLinghui He Xinglong Gong |
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| Affiliation: | a CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China
b Aerospace Research Institute of Material and Processing Technology, Beijing 100076, China |
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| Abstract: | In this work, the digital image correlation (DIC) technique was used as full-field measurement to analyze the shear properties of the 3D orthogonal woven C/C composites. Both the in-plane and the through-the-thickness specimens were tested and the macroscopic average strain was obtained. The composites were composed of lots of periodic units and the macroscopic average strain was dependent on these meso-structures. There were three regions within one unit, which showed different mesoscopic strain. The relationship between the shear test region and the macroscopic average strain was systematically studied. Finally, the accuracy of conventional strain-gauge rosette measurement was also discussed. |
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| Keywords: | A 3-Dimensional reinforcement B Mechanical properties D Mechanical testing Full-field measurements |
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