Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Method for Determining Fiber Volume Fraction in Carbon/Epoxy Composites Considering Oxidation of Carbon Fiber

탄소섬유 산화 현상을 고려한 탄소복합재료의 섬유체적비 측정법

  • Kim, YunHo (Dept. of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kumar, Sathish (Dept. of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Choi, Chunghyeon (Dept. of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Chun-Gon (Dept. of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Sun-Won (Satellite Structure Department, Korea Aerospace Research Institute) ;
  • Lim, Jae Hyuk (Satellite Structure Department, Korea Aerospace Research Institute)
  • Received : 2015.08.07
  • Accepted : 2015.10.26
  • Published : 2015.10.31
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Abstract

Measuring fiber volume fraction properly is very important in designing composite materials because the fiber volume fraction mainly determines mechanical and thermal properties. Conventional Ignition methods are effective for ceramic fiber reinforcing composite materials. However, these methods are not proper for applying to carbon fiber reinforcing composites because of the venerable characteristic against oxidation of carbon fiber. In the research, fiber volume fraction of carbon fiber composites was obtained by a thermogravimetric analysis considering oxidation characteristic of the carbon fiber and the method was compared and verified with the results from microscopic cross section images.

섬유체적비에 따라 복합재료의 기계적 열적 특성이 크게 달라지기 때문에, 복합재료 설계시 섬유체적비를 올바르게 측정하는 것이 매우 중요하다. 일반적으로 섬유체적비를 측정하는 여러 방법은 산화되지 않는 유리섬유나 세라믹섬유를 사용한 복합재료의 경우에는 적합하고 효율적이다. 하지만 산화현상이 있는 탄소섬유의 경우에는 산화 방법과 조건에 따라서 다른 결과를 가져오게 되며 그러므로 올바른 섬유체적비를 측정이 어렵다. 본 연구에서는 Thermogravimetric analysis를 수행하여 산화되는 탄소섬유의 질량 감소량을 보정하여 탄소섬유 복합재료의 섬유체적비를 측정하였고 현미경 단면 이미지를 이용하여 그 결과를 검증하였다.

Keywords

References

  1. (Journal) Moon, C.R., Bang, B.R., Choi, W.J., Kang, G.H., and Park, S.Y., "A Technique for Determining Fiber Content in FRP by Thermogravimetric Analyzer," Polymer Testing, Vol. 24, No. 3, 1995, pp. 376-380. https://doi.org/10.1016/j.polymertesting.2004.10.002
  2. (Journal) Yee, R.Y. and Stephens, T.S., "A TGA Technique for Determining Graphite Fiber Content in Epoxy Composites," Thermochimica Acta, Vol. 272, 1996, pp. 191-199. https://doi.org/10.1016/0040-6031(95)02606-1
  3. (Book) Composite Oracle, SGL Group.
  4. (Journal) Ridler, T.W. and Calvard, S., "Picture Thresholding Using an Iterative Selection Method", IEEE Trans. System, Man and Cybernetics, SMC-8, pp. 630-632, 1978.
  5. (Book) ASTM Standard D792-13, "Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement", ASTM International, 2013.
  6. (Book) Halbig, M.C. and Eckel, A.J., "Oxidation of Continuous Carbon Fibers within a Silicon Carbide Matrix under Stressed and Unstressed Conditions," NASA, 2000, TM-2000-210224.
  7. (Journal) Bertran, X., Labrugere, C., Anne, M., and Rebillat, F., "Oxidation Behavior of PAN-based Carbon Fibers and the Effect on Mechanical Properties," Oxidation of Metals, Vol. 80, No. 3-4, 2013, pp. 299-309. https://doi.org/10.1007/s11085-013-9388-9
  8. (Journal) Tong, Y., Wang, X., Su, H., and Xu, L., "Oxidation Kinetics of Polyacrylonitrile-based Carbon Fibers in Air and Theeffect on Their Tensile Properties," Corrosion Science, Vol. 53, No. 8, 2011, pp. 2484-2488. https://doi.org/10.1016/j.corsci.2011.04.004
  9. (Journal) Yang, J., Liu, J., Liu, W., Wang, J., and Tang, T., "Recycling of Carbon Fibre Reinforced Epoxy Resin Composites under Various Oxygen Concentrations in Nitrogen-oxygen Atmosphere," Journal of Analytical and Applied Pyrolysis, Vol. 112, 2015, pp. 253-261. https://doi.org/10.1016/j.jaap.2015.01.017
  10. (Journal) Bunsell, A.R., "Fibre Reinforcements for Composite Materials", Amsterdam, The Netherlands: Elsevier Science Publisher B.V., 1988, pp. 203.
  11. (Journal) Shiraishi, S. and Abe, T., "Characterization of Carbon Microstructure by Electrochemical Oxidation," Electrochemistry, Vol. 78, No. 6, 2010, pp. 517-522. https://doi.org/10.5796/electrochemistry.78.517

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