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Korean Carbon Society (한국탄소학회)
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Effects of oil absorption on the wear behaviors of carbon/epoxy woven composites

  • Lee, Jae-H. (School of Mechanical Engineering, College of Engineering, Kyung Hee University) ;
  • Lee, Jae-S. (School of Mechanical Engineering, College of Engineering, Kyung Hee University) ;
  • Rhee, Kyong-Y. (School of Mechanical Engineering, College of Engineering, Kyung Hee University)
  • Received : 2011.05.16
  • Accepted : 2011.06.21
  • Published : 2011.12.30
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Abstract

Carbon/epoxy woven composites are prominent wear-resistant materials due to the strength, stiffness, and thermal conductivity of carbon fabric. In this study, the effect of oilabsorption on the wear behaviors of carbon/epoxy woven composites was investigated. Wear tests were performed on dry and fully oil-absorbed carbon/epoxy woven composites. The worn surfaces of the test specimens were examined via scanning electron microscopy to investigate the wear mechanisms of oil-absorbed carbon/epoxy woven composites. It was found that the oil absorption rate was 0.14% when the carbon/epoxy woven composites were fully saturated. In addition, the wear properties of the carbon/epoxy woven composites were found to be affected by oilabsorption. Specifically, the friction coefficients of dry and oil-absorbed carbon/epoxy woven composites were 0.25-0.30 and 0.55-0.6, respectively. The wear loss of the oilabsorbed carbon/epoxy woven composites was $3.52{\times}10^{-2}\;cm^3$, while that of the dry carbon/epoxy woven composites was $3.52{\times}10^{-2}\;cm^3$. SEM results revealed that the higher friction coefficient and wear loss of the oil-absorbed carbon/epoxy woven composites can be attributed to the existence of broken and randomly dispersed fibers due to the weak adhesion forces between the carbon fibers and the epoxy matrix.

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References

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