Strength Evaluation of Friction Welded SUH35/SUB3 Considering Stress Singularity

응력특이성을 고려한 SUH35/SUH3 마찰용접재의 강도평가

  • Published : 2006.07.01

Abstract

Recently, application of friction welded SUH35/SUH3 is increasing in the manufacturing process of automotive engine valves For securing its reliability and a reasonable strength evaluation method, it is necessary to assess stress singularity under the residual stress condition on the friction welded interface between dissimilar materials. In this paper, strength evaluation method of friction welded materials was investigated by boundary element method and static tensile testing. An advanced method of quantitative strength evaluation for SUH35/SUH3 friction welded material is to be suggested by establishing fracture criterion by using stress singularity factors.

Keywords

References

  1. H. S. Jeong and T. Shinoda, 'Fundamentals and Basic Application of Friction Welding,' Journal of KWS, Vol.9, No.6, pp.1-12, 1997
  2. H. Okamura and K. Aota, 'Joining of Dissimilar Materials with Friction Stir Welding,' 輕金屬溶椄, Vol.42, No.2, pp.49-58, 2004
  3. N. Y. Chung and C. H. Park, 'Analysis of Stress Singularities on Interfaces of Friction welded Dissimilar Materials,' Transactions of KSAE, Vol.13, No.2, pp.142-148, 2005
  4. D. G. Lee, S. Y. Lee, J. K. Jung and J. Zhang, 'An Evaluation of Fatigue Properties on Dissimilar Friction Welded of Heat-Resisting Steels Used in Vehicle Valves,' Journal of KSAE, Vol.10, No.2, pp.186-192, 2002
  5. K. S. Kim, H. S. Kim and N. Y. Chung, 'Analysis of Stress Singularity on Ceramicl Metal Bonded Joints,' Journal of KSME, Vol.20, No.10, pp.3058-3067, 1996
  6. K. S. Kim, H. S. Kim and N. Y. Chung, 'Evaluation of Static Strength on Ceramicl Metal Bonded Joints Considering Stress Singularity,' Journal of KSMTE Vol.6, No.1, pp.59-68, 1997
  7. N. Y. Chung and J. H. Yi, 'Evaluation Method of Bonded Strength in Adhesively Bonded Structures of the Aluminum Alloys,' Journal of the KSME, Vol.8, No.1, pp.35-44, 1992
  8. H. T. Yang, S. K. Oh, S. P. Hwang and I. S. Kim, 'Study on Friction Welding of Heat Resisting Steel Materials of SUH3 and SUH35, and Its Real Time Evaluation by AE,' Proceedings of the KSOE Fall Annual Meeting, pp.12-19, 2000
  9. S. K. Oh, 'High Temperature Creep Life Prediction of Friction Welded Joints by Initial Strain Method and the AE Evaluation,' Journal of KSOE, Vol.11, No.4, pp.40-48, 1997
  10. S. K. Oh, M. H. Yoon, S. U. Jeong, and J. H. Oh, 'Optim ization of Heat Resisting Steels Friction Welding and Its Real Tim Predictability of High Temperature Creep Life of Long Time(1),' Journal of KSME, Vol.17, No.3, pp.512-519, 1993
  11. N. Y. Chung and C. H. Park, 'Analysis of Residual Stress Singularities on Interfaces of Friction welded SUH35/SUH3,' Transactions of KSAE, Vol.13, No.5, pp.104-111, 2005
  12. D. B. Bogy, 'The Plane Solution for Joined Dissimilar Elastic Semistrips under Tensions,' J. Appl. Mech, Vol.42, pp.93-98, 1975 https://doi.org/10.1115/1.3423560
  13. J. Dunders, 'Discussion of Edge-Bonded Dissimilar Orthogonal Elastic Wedges under Normal and Shear Loading,' J. Appl. Mech, Vol.36, pp.650-652, 1969 https://doi.org/10.1115/1.3564739