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Volume 31 Issue 6
Nov 2017
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Chinese Journal of High Pressure Physics  > 2017  >  31(6): 794-802.
ZHENG Kang, CHEN Li, FANG Qin, GAO Fei. Tensile Properties of CFRP/Epoxy Gel Composite Strip[J]. Chinese Journal of High Pressure Physics, 2017, 31(6): 794-802. doi: 10.11858/gywlxb.2017.06.015
Citation: ZHENG Kang, CHEN Li, FANG Qin, GAO Fei. Tensile Properties of CFRP/Epoxy Gel Composite Strip[J]. Chinese Journal of High Pressure Physics, 2017, 31(6): 794-802. doi: 10.11858/gywlxb.2017.06.015
shu

Tensile Properties of CFRP/Epoxy Gel Composite Strip

doi: 10.11858/gywlxb.2017.06.015

  • State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology, Nanjing 210007, China

  • Received Date: 11 Jan 2017
  • Rev Recd Date: 03 Apr 2017
    Abstract
  • Carbon fiber reinforced polymer (CFRP) laminates and epoxy gels have been extensively applied to externally strengthen engineering structures to resist blast loading.In order to understand the mechanical properties of CFRP/epoxy gel composites, we carried out a series of quasi-static tensile tests and obtained the entire tensile stress-strain curve.Based on the test results, we calibrated the material parameters of the finite element model developed in LS-DYNA software.It is found that CFRP/epoxy gel composites exhibit an obvious elastic-brittle characteristic, and the mean value of the tensile strength obtained in the test is up to 4 100 MPa.Being externally attached with resin gel, the disadvantage of discrete characteristics of CFRP laminates was significantly improved, which makes the externally bonded CFRP fully effective.The initial defects of the pasted epoxy gels significantly affect the failure modes and tensile properties of the tested specimen, and the uniformity of the sprayed layer of epoxy gels is of great importance to improving the blast resistance of the retrofitted engineering structures.

     

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