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Fracture mechanism characteristics of ultra-thin chopped carbon fiber tape-reinforced thermoplastics hat-shaped hollow beam under transverse static and impact loadings

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Abstract

This paper aims to experimentally and numerically explore fracture mechanism characteristics of ultra-thin chopped carbon fiber tape-reinforced thermoplastics (UT-CTT) hat-shaped hollow beam under transverse static and impact loadings. Three distinct failure modes were observed in the impact bending tests, whereas only one similar progressive collapse mode was observed in the transverse bending tests. The numerical model was to incorporate some hypothetical inter-layers in UT-CTT and assign them with the failure model as cohesive zone model, which can perform non-linear characteristics with failure criterion for representing delamination failure. The dynamic material parameters for the impact model were theoretically predicted with consideration of strain-rate dependency. It shows that the proposed modeling approach for interacting damage modes can serve as a benchmark for modeling damage coupling in composite materials.

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Acknowledgements

Part of this study was conducted as Japanese METI project “The Future Pioneering Projects/Innovative Structural Materials Project” since 2013fy. Authors would like to express sincere appreciation to the project members who have provided valuable information and useful discussions.

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Authors and Affiliations

  1. Department of Systems Innovation, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan

    Qitao Guo, Bohan Xiao, Isamu Ohsawa & Jun Takahashi

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  1. Qitao Guo
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  2. Bohan Xiao
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  3. Isamu Ohsawa
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  4. Jun Takahashi
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Correspondence to Qitao Guo.

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Guo, Q., Xiao, B., Ohsawa, I. et al. Fracture mechanism characteristics of ultra-thin chopped carbon fiber tape-reinforced thermoplastics hat-shaped hollow beam under transverse static and impact loadings. Carbon Lett. 30, 271–280 (2020). https://doi.org/10.1007/s42823-019-00095-z

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