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Failure behaviors of C/C composite tube under lateral compression loading

  • Gao, Yantao (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) ;
  • Guan, Yuexia (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) ;
  • Li, Ke (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) ;
  • Liu, Min (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) ;
  • Zhang, Can (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) ;
  • Song, Jinliang (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)
  • Received : 2018.12.03
  • Accepted : 2019.05.27
  • Published : 2019.10.25

Abstract

Mechanical responses and failure behaviors of advanced C/C composite tube are very important for structural component design in nuclear reactor. In this study, an experimental investigation was conducted to study mechanical properties of C/C composite tube. Quasi-static compression loading was applied to a type of advanced composite tube to determine the response of the quasi-static load displacement curve during progressive damage. Acoustic emissions (AE) signals were captured and analyzed to characterize the crack formation and crack development. In addition, the crack propagation of the specimens was monitored by imaging technique and failure mode of the specimen was analyzed. FEM is appled to simulate the stress distribution. Results show that advanced C/C composite tube exhibits considerable energy absorption capability and stability in load-carrying capacity.

Acknowledgement

Supported by : Natural Science Foundation of Shanghai, National Science Foundation

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