Proceedings of the Korean Society For Composite Materials Conference (한국복합재료학회:학술대회논문집)

The Korean Society for Composite Materials (한국복합재료학회)
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Interfacial Properties of Electrodeposited Carbon Fibers Reinforced Epoxy Composites Using Fragmentation Technique and Acoustic Emission

  • Yeong-Min Kim (Dept. of Polymer Science & Engineering, Regional Res. Center for Aircraft Parts Technology, Gyeongsang National University) ;
  • Joung-Man Park (Dept. of Polymer Science & Engineering, Regional Res. Center for Aircraft Parts Technology, Gyeongsang National University) ;
  • Ki-Won Kim (Dept. of Metallurgical Materials Engineering Gyeongsang National University) ;
  • Dong-Jin Yoon (Failure Prevention Research Center, Korea Research Institute of Standards and Science Taedok Science Town)
  • Published : 1999.11.01
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Abstract

Carbon fiber/epoxy composites using electrodeposited monomeric and polymeric coupling agents were compared with the dipping and the untreated cases. Treating conditions such as time, concentration and temperature were optimized. Four-fibers embedded micro-composites were prepared for fragmentation test. Interfacial properties of four-fiber composites with different surface treatments were investigated with simultaneous acoustic emission (AE) monitoring. The microfailure mechanisms occurring from fiber break, matrix and interlayer crackings were examined by AE parameters and an optical microscope. It was found that interfacial shear strength (IFSS) of electrodeposited carbon fibers was much higher than the other cases under dry and wet conditions. Well separated and different-shaped AE groups occurs for the untreated and ED treated case, respectively.

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