Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
권호 표지
DOI QR코드

DOI QR Code

Prediction of Fatigue Life for Hole-notched Weave CFRP Plate

평직 CFRP 홀 노치재의 피로 수명 예측

  • 김상영 (성균관대학교 기계공학 대학원) ;
  • 김용석 (성균관대학교 기계공학 대학원) ;
  • 권희환 (성균관대학교 기계공학 대학원) ;
  • 최정훈 (성균관대학교 기계공학 대학원) ;
  • 구재민 (성균관대학교 기계공학부) ;
  • 석창성 (성균관대학교 기계공학부)
  • Published : 2010.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, CFRP composite is more and more used in the various fields because of a higher specific modulus, chemical property and so on. Most products using CFRP composite are manufactured by construction of components. Various components are joined with those by bolts and pins. Holes for bolts and pins decrease strength and fatigue life of components, because those act as notch in structures. In this paper, we experimentally evaluated the fatigue life of hole-notched and unnotched weave CFRP plate. Then, we compared the two results and proposed an equation for prediction of fatigue life.

최근 들어 높은 비강성, 화학적 특성 등으로 인하여 CFRP 복합재료는 여러 분야에서 많이 사용되고 있다. 대부분의 CFRP 복합재료를 이용한 구조물들은 여러 개의 독립된 부재들은 볼트(bolt)나 핀(pin)과 같은 기계적인 체결방법에 의해 조립 제작된다. 이때 독립된 부재들을 하는 경우가 많은데, 이와 같은 체결법은 홀과 같은 불연속부를 부재에 형성하게 된다. 홀 등의 불연속부는 재료 내의 노치로 작용하여 정하중 및 피로하중 하에서 재료의 강도를 저하시키는 원인이 된다. 본 연구에서는 평활재와 홀 노치재를 이용하여 실험적으로 피로수명을 평가하였으며 이 결과들을 비교하여 홀 노치재의 피로수명 예측식을 제안하였다.

Keywords

References

  1. Broutman, L. J. and Sahu, S., 1972, "A New Theory to Predict Cumulative Fatigue Damage in Fiberglass Reinforce Plastics," Composite Materials: Testing and Design (Second Conference, ASTM STP 497, pp. 170-188
  2. Reifsnider, K. L. and Stinchcomb, W. W., 1986, "A Critical-Element Model of the Residual Strength and Life of Fatigue-Loaded Composite Coupons," Composite Materials: Fatigue and Fracture, ASTM STP 907, Hahn, H.T., Ed., pp. 298-313.
  3. J. S. Huh, W. Hwang, H. C. Park and K. S. Han, 1996, "Fatigue Life Prediction of Circular Notched CFRP Laminates," Transactions of the KSME (A), Vol. 20, No. 3, pp. 832-842.
  4. T. P. Philippidis and V. A. Passipoularidis, 2007, "Residual strength after fatigue in composites: Theory vs. experiment." International Journal od Fatigue, Vol. 29, pp. 2104-2116. https://doi.org/10.1016/j.ijfatigue.2007.01.019
  5. Hahn H. T. and Kim R. Y., 1975, "Proof testing of composite materials," Journal of Composite Materials, Vol. 9, pp. 297-311 https://doi.org/10.1177/002199837500900308
  6. Yang J. N. and Liu M. D., 1977, "Residual strength degradation model and theory of periodic proof tests for graphite/epoxy laminates,'' Journal of Composite Material, Vol. 11, pp. 176-203. https://doi.org/10.1177/002199837701100205
  7. Yang J. N., 1977, "Reliability prediction for composites under periodic proof tests in service," ASTM STP 617, pp. 272-295.
  8. Yang J. N., 1978, "Fatigue and residual strength degradation for graphite/epoxy composites under tension-compression cyclic loading," Journal of Composite Materials, Vol. 12, pp. 19-39. https://doi.org/10.1177/002199837801200102
  9. Yang J. N. and Jones D. L., 1978, "Statistical fatigue of graphite/epoxy angle ply laminates in shear," Journal of Composite Materials, Vol. 12, pp. 371-389 https://doi.org/10.1177/002199837801200403
  10. Yang J. N. and Sun C. T., 1980, "Proof test and fatigue of unnotched composite laminates," Journal of Composite Materials, Vol. 14, pp. 168-176. https://doi.org/10.1177/002199838001400208
  11. Yang J. N. and Jones D. L., 1980, "Effect of load sequence on the statistical fatigue of composites," AIAA Journal, Vol. 18, No. 12, pp. 1525-1531. https://doi.org/10.2514/3.50912
  12. Yang J. N. and Jones D. L., 1980, "Statistical fatigue of unnotched composite laminates," Advances in Composite Materials, ICCM-III, Vol. 1, pp. 472-483.
  13. Yang J. N. and Jones D. L., 1981, "Load sequence effects on the fatigue of unnotched composite laminates," ASTM, STP 723, pp. 213-232
  14. Yang J. N. and Cole R. T., 1982, "fatigue of composite bolted joints under dual stress levels," Progress in Science and Engineering of Composites, ICCM-IV, Vol. 1, pp. 333-340
  15. Yang J. N., Jones D. L., 1982, "Fatigue of graphite/epoxy [0/90/45/-45]S laminates under dual stress levels," Composites Technology Review, Vol. 4, No. 3, pp. 63-70. https://doi.org/10.1520/CTR10864J
  16. Hwang, W. and Han, K. S., 1989, "Fatigue of Composite Materials-Damage Model and Life Prediction," Composite Materials: fatigue and Fracture, Second Volume, ASTM STP 1012, Paul A. Lagace, Ed., pp. 88-102.
  17. Sendeckyj G. P., 1991, "Life prediction for resin-matrix composite materials," Composite material series, 4. Elsevier, pp. 431-483.
  18. Sendeckyj G. P., 1981, "Fitting models to composite materials fatigue data. Test methods and design allowables for fibrous composites," ASTM STP, 734, pp. 245-260.
  19. Adam T., Dickson R. F., Jones C. J., Reiter H. and Harris B., 1986, "A power law fatigue damage model for fiberreinforced plastic laminates," Proceedings of the Institution of Mechanical Engineers, Vol. 200, No. C3, pp. 155-166 https://doi.org/10.1243/PIME_PROC_1986_200_111_02
  20. T.P. Philippidis, V.A. Passipoularidis, "Residual strength after fatigue in composites: Theory vs. experiment," International journal of fatigue, Vol. 29, 2104-2116, 2007 https://doi.org/10.1016/j.ijfatigue.2007.01.019
  21. ASTM D3039-07, 2007, "Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials," Annual Book of ASTM Standard
  22. Whitcomb, J. D., 1981, "Experimental and Analytical Study of Fatigue Damage in Notched Graphite/Epoxy Laminates," Fatigue of Fibrous Composite Materials, ASTM STP 723, pp. 48-63
  23. Kress, G. R. and Stinchcomb, W. W., 1985, "Fatigue Response of Notched Graphite/Epoxy Laminates," Recent Advances in Composites in the United States and Japan, ASTM STP 864, Vinson, J. R. and Taya, M., Eds., pp. 173-196.
  24. Bakis, C. E., Siminds, R. A., Vick, L. W. and Stinchcomb, W. W., 1990, " Matrix Toughness, Long-Term Behavior, and Damage Tolerance of Notched Graphite fiber-Reinforced Composite Materials," Composite Materials: Testing and Design (Ninth Volume), ASTM STP 1059, Garbo, S. P., Ed., pp. 349-370.
  25. Atsushi Hosoi, Hiroyuki Kawada and Hiromichi Yoshino, 2006, ''Fatigue characteristics of quasi-isotropic CFRP laminates Subjected to variable amplitude cyclic two-Stage loading," International Journal of Fatigue, Vol. 28, pp. 1284-1289. https://doi.org/10.1016/j.ijfatigue.2006.02.039
  26. Akbar Afaghi-Khatibi, Lin Ye, Yiu-Wing Mai, 2001, "An experimental study of the influence of fibre-matrix interface on fatigue tensile strength of notched composite laminate," Composites: part B, Vol. 32, pp. 371-377. https://doi.org/10.1016/S1359-8368(01)00012-9
  27. P. K. Rakesh, I. Singh and D. Kumar, 2010, " Failure prediction in glass fiber reinforced plastics laminates with drilled hole under uni-axial loading," Materials and Design, Vol. 31, 3002-3007. https://doi.org/10.1016/j.matdes.2010.01.022

Cited by

  1. Effect of the Insert Shape on the Improvement of Durability of Bolted Joints Applied to Composite Bogie Frames vol.38, pp.7, 2014, https://doi.org/10.3795/KSME-A.2014.38.7.765
  2. 서브모델링 기법을 이용한 철도차량 복합재 대차프레임의 금속재 체결부 볼트 위치 최적화 해석 연구 vol.23, pp.6, 2010, https://doi.org/10.7234/kscm.2010.23.6.019