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Impact Failure of Flattened Brazilian Disc with Cracks—Process and Mechanism

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Abstract

Split Hopkinson pressure bar (SHPB) has been used to study the dynamic failure pattern of flattened mortar Brazilian disc under impact load. Each disc contains several prefabricated cracks paralleled to each other. Dynamic FEM has also been adopted to simulate such failure behavior. The mechanism of crack initiation, propagation and cut-through have been scrutinized with both experimental and numerical approaches. Influence of the number of the prefabricated cracks on the specimen strength and acoustic emission (AE) performance can be observed and studied. The results show that the strength decreases and AE counts increases, when the number of the prefabricated cracks increases.

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Authors and Affiliations

  1. School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China

    Yafang Zhang  (张亚芳), Hao Liu  (刘浩), Guoqi Yin, Chenggui Ou, Juan Lu & Juan He

  2. Shenzhen Municipal Design Research Institute Co. Ltd., Shenzhen, 518029, China

    Hao Liu  (刘浩)

Authors
  1. Yafang Zhang  (张亚芳)
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  2. Hao Liu  (刘浩)
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  3. Guoqi Yin
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  4. Chenggui Ou
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  5. Juan Lu
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  6. Juan He
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Corresponding author

Correspondence to Hao Liu  (刘浩).

Additional information

Funded by the National Natural Science Foundation of China (Nos. 51678170, 51878190)

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Zhang, Y., Liu, H., Yin, G. et al. Impact Failure of Flattened Brazilian Disc with Cracks—Process and Mechanism. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 35, 1003–1010 (2020). https://doi.org/10.1007/s11595-020-2348-8

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  • DOI: https://doi.org/10.1007/s11595-020-2348-8

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