Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
권호 표지

Modeling for the Fatigue Analysis of Al Alloy Casting Containing Internal Shrinkage Defect

내부 결함을 포함하는 알루미늄 합금 주조품의 피로해석을 위한 모델링

  • Lee, Sung-Won (Dept. of Virtual Engineering, University of Science and Technology(Center for e-Design, Korea Institute of Industrial Technology)) ;
  • Kim, Hak-Ku (Dept. of Virtual Engineering, University of Science and Technology(Center for e-Design, Korea Institute of Industrial Technology)) ;
  • Hwang, Ho-Young (Dept. of Virtual Engineering, University of Science and Technology(Center for e-Design, Korea Institute of Industrial Technology)) ;
  • Kwak, Si-Young (Dept. of Virtual Engineering, University of Science and Technology(Center for e-Design, Korea Institute of Industrial Technology))
  • 이성원 (과학기술연합대학원대학교 가상공학과(한국생산기술연구원 사이버설계센터)) ;
  • 김학구 (과학기술연합대학원대학교 가상공학과(한국생산기술연구원 사이버설계센터)) ;
  • 황호영 (과학기술연합대학원대학교 가상공학과(한국생산기술연구원 사이버설계센터)) ;
  • 곽시영 (과학기술연합대학원대학교 가상공학과(한국생산기술연구원 사이버설계센터))
  • Received : 2010.09.08
  • Accepted : 2010.10.22
  • Published : 2010.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

The structural stress and fatigue behavior of tensile specimen containing internal shrinkage defect were modeled. Real shrinkage defect in casting was scanned by industrial CT (computed tomography), and subsequently its shape was simplified by ellipsoidal primitives for the structural analysis (S.S.M., shape simplification method). The analysis results were compared with the results by real shrinkage shape without any simplification process. It was possible to consider real shrinkage of casting in stress analysis and the method to predict fatigue life of casting with defect was proposed.

Keywords

References

  1. C. Beckermann, R. I. Stephens, R. A. Hardin and K. M. Sigl, Internal Journal of Cast Metals Research, "Fatigue of 8630 Cast Steel in the Presence of Porosity", Vol. 17, No. 3. (2004)
  2. Q. G. Wang, D. A. Apelian and D. A. Lados, J. Light. Met., "Fatigue Befavior of 356-T6 Aluminum Cast Alloys. Part I. Effect of casting defects", 1 (2001) 73-84 https://doi.org/10.1016/S1471-5317(00)00008-0
  3. H. R. Ammar, A. M. Samuel, F. H. Samuel, J. Light. Met., "Effect of Casting Imperfections on the fatigue life of 319-F and 356-T6 Al-Si Casting Alloys," Vol. 473, No. 1-2 (2008) 65-75
  4. S. Y. Kwak, C. H. Lim and J. W. Beak, KSME-A, "Contribution Analysis Using Shape Simplification Method for Casting Structure Shrinkage," Vol. 33, No. 8 (2009), 807-812. https://doi.org/10.3795/KSME-A.2009.33.8.807
  5. J. Cheng, S. Y. Kwak and J. K. Choi, The 8th Pacific Rim International Conference on Modeling of Casting & Solidification Processes, "An Ellipsoidal approximation technique of casting shrinkage cavity models for Finite Element Analysis," (2010), 233-236
  6. L. G. Khachiyan, "Rounding of polytopes in the real number model of computation," Mathematics of Operations Research, (1996), Vol. 21, 307-320 https://doi.org/10.1287/moor.21.2.307
  7. The Society of Materials Science, "Databook On Fatigue Strength of Metallic Materials", Volume 2 (1996) 1703-1710