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Korean Carbon Society (한국탄소학회)
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A study on the fracture toughness of seawater-absorbed carbon nanotube/epoxy/basalt composites

  • Kim, Man Tae (Gumi Electronics & Information Technology Research Institute) ;
  • Rhee, Kyong Yop (School of Mechanical Engineering, Kyung Hee University) ;
  • Kim, Hyun Ju (Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology) ;
  • Jung, Dong Ho (Maritime and Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology)
  • Received : 2013.05.31
  • Accepted : 2013.06.27
  • Published : 2013.07.31
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Abstract

It has been demonstrated in a previous study that carbon nanotube (CNT)/epoxy/basalt composites produce better flexural properties than epoxy/basalt composites. In this study, mode I fracture tests were conducted using CNT/epoxy/basalt composites with and without seawater absorption in order to investigate the effect of the seawater absorption on the mode I fracture toughness ($G_{Ic}$) of the CNT/epoxy/basalt composites. The results demonstrated that the compliance of the seawater-absorbed specimen was larger than that of the dry specimen at the same crack length, while the opposite result was obtained for the fracture load. The $G_{Ic}$ value of the seawater-absorbed CNT/epoxy/basalt composites was approximately 20% lower than that of the dry CNT/epoxy/basalt composites.

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References

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