DOI QR코드

DOI QR Code

Evaluation of Static Stability of Hybrid Carbody Structures of Korean Tilting Train eXpress Including Degradation Effects of Composite Materials under Ground Environments

지상환경하에서 복합재료의 물성저하를 고려한 한국형 틸팅열차 하이브리드 차체 구조물의 정적안정성 평가

  • 신광복 (한국철도기술연구원 기존철도기술개발사업단) ;
  • 한성호 (한국철도기술연구원 기존철도기술개발사업단)
  • Published : 2004.06.01

Abstract

In order to evaluate the static stability of hybrid carbody structures of Korean Tilting Train eXpress(TTX) caused by degradation of composites under ground environments, T300/AD6005 graphite/epoxy composite specimens were exposed to accelerated environmental conditions including ultraviolet radiation, temperature and moisture fer 2000 hours. It was found that the stiffness and strength of composites after aging were lower than those of unexposed specimens, and decreased as the aging time increases. The values of the degraded properties were used in the static analysis to check the static stability of hybrid carbody structures caused by environmental degradation of composites. The results shown that the structural stability of hybrid carbody structures was affected by the degradation of composites after exposure to accelerated aging environments.

Keywords

Composite Material;Degradation;Hybrid Carbody Structure;Tilting Train

References

  1. Shin, K. B., Kim, C. G. and Hong, C. S., 2003, 'Correlation of Acclerated Aging Test to Natural Aging Test on Graphite/Epoxy Composite Materials,' Journal of Reinforced Plastics and Composites, Vol. 22, No. 9, pp. 849-866 https://doi.org/10.1177/0731684403022009005
  2. Test Methods for Static Load of Body Structures of Railway Rolling Stock, JIS E 7105
  3. Shin, K. B. and Hahn, S. H., 2003, 'A Study on the Evaluation of the Failure for Carbody Structures made of Laminated Fiber-Reinforced Composite Materials,' The 2003 Autumn Conference & Annual Meeting of Korean Society for Railway, pp. 65-72
  4. Larsson, F., 1986, 'The Effect of Ultraviolet Light on Mechanical Properties of Kevlar 49 Composites,' Journal of Reinforced Plastics and Composites, Vol. 15, pp. 19-22 https://doi.org/10.1177/073168448600500103
  5. Ci65/XWA Weather-Ometer Manual, 1992, Atlas Electric Devices Company
  6. Hong, S. H., Shin, K. B., Jung, B., Hwang, T. G., Kim, J. S., Kim, C. G. and Hong, C. S., 1998, 'Prediction of Long-Term Performance of a Composite Material Using Acclerated Environmental Test,' The Korean Society for Composite Materials, Vol. 11, No. 5, pp. 1-13
  7. Shin, K. B., Hahn, S. H. and Park, K. J., 2003, 'Structural Stability of Composite Carbody for Korean Tilting Train eXpress with Service speed of 180km/h,' The 2003 Autumn Conference & Meeting of Korean Society of Mechanical Engineers, Material and Fracture Division, pp. 108-113
  8. Shen, C. H. and Springer, G. S., 1977, 'Effects of Moisture and Temperature on the Tensile Strength of Composite Materials,' Journal of Composite Materials, Vol. 11, pp. 2-16 https://doi.org/10.1177/002199837701100102
  9. Niu, M. C., 1992, Composite Airframe Structures, Conmilit Press LTD., First Edition, pp. 357-382