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Multi-Scale Modeling and Experimental Study of the Strength of Plain-Woven SiC/SiC Composites

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Abstract

The strength of plain-woven SiC/SiC composites was predicted with the multi-scale method. Firstly, a three-dimensional unit cell was used to characterize the geometric structure of plain-woven SiC/SiC composites. Secondly, the yarns were seen as minicomposites, whose axial mechanical properties were obtained by the shear-lag model, and the fiber defect model was adopted to simulate the failure process of minicomposites. The strength of plain-woven SiC/SiC composites predicted with the multi-scale method is in good agreement with the experimental result. Besides, the effects of heat treatment and load-carrying capacity of broken fiber on the strength of plain-woven SiC/SiC composites were evaluated, and the effect of woven geometry structure was also evaluated.

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Acknowledgements

This work was supported by the National Key Research and Development Program of China [grant number 2017YFB0703200], the National Natural Science Foundation of China [grant numbers 51575261, 51675266], the Fundamental Research Funds for the Central universities [NF2018002], and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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Authors and Affiliations

  1. Key Laboratory of Aero-engine Thermal Environment and Structure, Ministry of Industry and Information Technology, Nanjing, 210016, People’s Republic of China

    Xiguang Gao, Hongnian Dong, Sheng Zhang & Yingdong Song

  2. Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao St, Nanjing, 210016, People’s Republic of China

    Xiguang Gao, Hongnian Dong, Sheng Zhang & Yingdong Song

  3. State Key Laboratory of Mechanics and Control Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People’s Republic of China

    Yingdong Song

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  1. Xiguang Gao
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  2. Hongnian Dong
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Correspondence to Xiguang Gao or Yingdong Song.

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Gao, X., Dong, H., Zhang, S. et al. Multi-Scale Modeling and Experimental Study of the Strength of Plain-Woven SiC/SiC Composites. Appl Compos Mater 26, 1333–1348 (2019). https://doi.org/10.1007/s10443-019-09783-5

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