한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제4권4호
  • /
  • Pages.171-178
  • /
  • 1996
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

흑연/에폭시 복합재료의 혼합모우드 층간분리 해석

Analysis of Mixed Mode Delamination in Graphite/Epoxy Composite

  • 염영진 (울산대학교 기계공학과) ;
  • 유희 (울산대학교 대학원 기계공학과)
  • 발행 : 1996.08.01
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초록

DCB(pure mode I) and CLS(mixed mode) tests were performed to investigate the effect of fracture mode on the interlaminar fracture of composite laminate. Mode I critical strain energy release rate was found to be $133J/m^2$ from the DCB test and total strain energy release rate decreased from $1, 270J/m^2$ as thickness ratio(tl/t) varied from 0.333 to 0.667 from the crease from the CLS test. Crack length had no effect on the total strain energy release rate and load was almost constant during the crack growth of the specimen which had the specific thickness ratio. Crack initiated when the stress of the strap ply reached constant stress $42kgf/mm^2$ which was found to be independent of the thickness ratio.

키워드

참고문헌

  1. ASTM STP 775 Characterizing Delamination Growth in Graphite/.Epoxy Wilkins, D. J.;J. R. Eisenmann;R. A. Camin;W. S. Margolis;R. A. Benson
  2. ASTM STP 876 Characterization of Model I and Mixed-Mode Delamination Growth in T300/5208 Graphite/Epoxy Rankumar, R. L.;J. D. Whitcomb
  3. Composites Science and Technology v.23 Stress Analysis of the Double Cantilever Beam Specimen Whitney, J. M.
  4. J. of Composite Materials v.21 Mode Ⅰ and Mixed Mode Energy Release Rate Values for Delamination of Graphite/Epoxy Test Speciments Rybicki, E. F.;T. D. Hernandez;J. E. Deibler;R. C. Knight;S. S. Vison
  5. J. of Composite Materials v.21 Large Displacement and End Block Effects in the 'DCB' Interlaminar Test in Modes Ⅰ and Ⅱ Williams, J. G.
  6. J. of Composites Technology and Research v.10 no.4 Evaluation of $G_{IC}$ of a DCB Specimen Using an Anisotropic Solution El-Zein, M. S.;K. L. Reifsnider
  7. J. of Composite Materials v.23 Interlaminar Fracture Behavior and Fiber Bridging fo Glass-Epoxy Composite Under Mode Ⅰ Static and Cyclic Loading Hwang, W.;K. S. Han
  8. Composites Technology and Review v.5 Effects of Lay-up, Temperature, and Loading Rate in Double Cantilever Beam Tests of Interlaminar Crack Growth Hunston, D. L.;W. D. Bascom
  9. ASTM STP 876 Effects of Strain Rate on Delamination Fracture Toughness of Graphite/Epoxy Aliyu, A. A.;I. M. Daniel
  10. J. of Composite Materials v.21 Loading Rate Effect on Interlaminar Fracture Toughness of a Thermoplastic Composite Mall, S.;G. E. Law;M. Katouzian
  11. J. of Composite Materials v.21 Rate Effects on Mode Ⅰ Interlaminar Fracture Toughness in Composite Materials Smiley, A. J.;R. B. Pipes
  12. 석사학위논문, 한국과학기술원 ENF 실험을 이용한 탄소섬유강화 복합적층판의 층간전단 파괴인성치 특성 심재열
  13. 한국복합재료학회지 v.5 no.1 유한요소법에 의한 수정된 ENF 시험편의 에너지방출율 해석 심재열;홍창선
  14. 석사학위논문, 한국과학기술원 복합재료의 혼합모우드 층간파괴인 성치의 실험적 평가 김형준