Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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AE Application for Fracture Behavior of SiC Reinforced CFRP Composites

SiC 강화 CFRP 복합재의 파괴거동에 관한 음향방출 적용

  • Ryu, Yeong Rok (Department of Safety Engineering, Graduate School, Pukyong National University) ;
  • Yun, Yu Seong (Department of Safety Engineering, Pukyong National University) ;
  • Kwon, Oh Heon (Department of Safety Engineering, Pukyong National University)
  • 류영록 (부경대학교 대학원 안전공학과) ;
  • 윤유성 (부경대학교 안전공학과) ;
  • 권오헌 (부경대학교 안전공학과)
  • Received : 2016.02.17
  • Accepted : 2016.04.25
  • Published : 2016.06.30
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Abstract

Carbon Fiber Reinforced Plastic(CFRP) composite with a higher specific strength and rigidity is more excellent than conventional metallic materials or other organic polymer of FRP. It has been widely used in vehicles, aerospaces and high technology industries which are associated with nuclear power fields. However, CFRP laminated composite has several disadvantages as like a delamination, matrix brittleness and anisotropic fibers that are the weak points of the crack initiation. In this present work, the reinforced silicon carbide(SiC) particles were added to the interlayer of CFRP laminates in order to mitigate the physical vulnerability affecting the cracking and breaking of the matrix in the CFRP laminated composite because of excellent specific strength and thermal shock resistance characteristics of SiC. The 1wt% of SiC particles were spread into the CFRP prepreg by using a spray coating method. After that, CFRP prepregs were laminated for the specimen. Also, the twill woven type CFRP prepreg was used because it has excellent workability. Thus the mechanical and fracture behaviors of the twill woven CFRP laminated composite reinforced with SiC particles were investigated with the acoustic emission(AE) method under a fracture test. The results show that the SiC particles enhance the mechanical and fracture characteristics of the twill CFRP laminate composite.

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References

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