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Tensile Properties and Failure Mechanism of 3D Woven Hollow Integrated Sandwich Composites

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Abstract

Tensile properties and failure mechanism of 3D woven hollow integrated sandwich composites are investigated experimentally, theoretically and numerically in this paper. Firstly, the tensile properties are obtained by quasi-static tensile tests on the specimens in two principal directions of the sandwich panels, called warp and weft. The experimental results shows that the tensile performances of the warp are better than that of the weft. By observing the broken specimens, it is found that the touch parts between yarns are the main failure regions under tension. Then, a theoretical method is developed to predict the tensile properties. By comparing with the experimental data, the accuracy of the theoretical method is verified. Simultaneously, a finite element model is established to predict the tensile behavior of the composites. The numerical results agree well with the experimental data. Moreover, the simulated progressive damages show that the contact regions in the warp and weft tension are both the initial failure areas.

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Acknowledgements

This work was supported by the Fundamental Research Funds for the Central Universities, A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, and the Fundation of Graduate Innovation Center in NUAA (Grant No. kfjj20160111).

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Authors and Affiliations

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

    Chang Liu, Deng’an Cai, Guangming Zhou & Fangzhou Lu

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  1. Chang Liu
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  2. Deng’an Cai
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  3. Guangming Zhou
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  4. Fangzhou Lu
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Correspondence to Guangming Zhou.

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Liu, C., Cai, D., Zhou, G. et al. Tensile Properties and Failure Mechanism of 3D Woven Hollow Integrated Sandwich Composites. Appl Compos Mater 24, 1151–1163 (2017). https://doi.org/10.1007/s10443-016-9581-5

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  • DOI: https://doi.org/10.1007/s10443-016-9581-5

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