Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Interlaminar Fracture Toughness of Hybrid Composites Inserted with Different Kinds of Non-Woven Tissues : Part I-Mode I

종류가 다른 부직포가 삽입된 하이브리드 복합재료의 층간파괴인성 : Part I-Mode I

  • Jeong, Jong-Seol (Graduate School of NID Fusion Technology, Seoul Nat'l Univ. of Science and Technology) ;
  • Cheong, Seong-Kyun (Dept. of Mechanical and Automotive Engineering, Seoul Nat'l Univ. of Science and Technology)
  • 정종설 (서울과학기술대학교 NID 융합기술대학원) ;
  • 정성균 (서울과학기술대학교 기계.자동차공학과)
  • Received : 2012.09.03
  • Accepted : 2012.12.24
  • Published : 2013.04.01
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Abstract

In this study, the interlaminar fracture toughness in mode I of a hybrid composite inserted with different types of non-woven tissues was determined. The interlaminar fracture toughness in mode I is obtained by a double cantilever beam test. The experiment is performed using three types of non-woven tissues: 8 $g/m^2$ of carbon tissue, 10 $g/m^2$ of glass tissue, and 8 $g/m^2$ of polyester tissue. Considering a specimen with no non-woven tissue as a reference, the interlaminar fracture toughness in mode I of specimens inserted with non-woven carbon and glass tissues decreases by as much as 6.3% and 11.4%, respectively. However, the fracture toughness of a hybrid composite specimen inserted with non-woven polyester tissue increases by as much as 69.4%. It is considered that the specimen inserted with non-woven polyester tissue becomes cheaper, and lighter, and the value of the fracture toughness becomes much greater than that of the non-woven carbon tissue.

본 논문에서는 종류가 다른 부직포가 삽입된 하이브리드 복합재료의 Mode I 층간파괴인성에 관한 연구를 수행하였다. Mode I 층간파괴인성값($J/m^2$)은 DCB실험에 의하여 얻어졌으며, 부직포를 삽입하지 않은 시편과 3종류의 부직포(8 $g/m^2$의 탄소부직포, 10 $g/m^2$의 유리부직포, 8 $g/m^2$의 폴리에스테르부직포)가 각각 삽입된 시험편에 대하여 실험을 수행하였다. 각 시험편들에 대한 Mode I 층간파괴인성값은 부직포를 삽입하지 않은 시편을 기준으로 탄소부직포를 삽입한 시편은 6.3% 감소하였고, 유리부직포를 삽입한 시편은 약 11.4% 감소한 반면 폴리에스테르부직포를 삽입한 시편은 약 69.4% 증가하였다. 폴리에스테르부직포는 탄소부직포에 비해 저렴하며 가볍고, Mode I 층간파괴인성값을 크게 증가시킴을 알 수 있었다.

Keywords

References

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