Advertisement

Cracking of Through-Hole in Intermediate Casing Flange

  • Guoru Fu
  • Fengjun Lv
  • Quan Li
  • Zhigang Chai
Technical Article---Peer-Reviewed

Abstract

To determine the root cause of through-hole cracking in a flange, detailed methods, including macroscopic and microscopic inspection, microstructural investigations, chemical analysis, hardness measurement, simulation experimentation, and analytic calculations were carried out, in this study. The results show that the cracking was due to overload which was caused by impact. The crack formed in the time period before chromic acid anodization and machining, and the impact stress originated from conveying and revolving transportations. The microstructure, hardness, and chemical compositions of intermediate casing flange all coincide with technical requirements.

Keywords

Intermediate casing flange Through-hole Crack Overload 

Bibliography

  1. 1.
    Song, K.-S., Kin, S.-G., Jung, D., Hwang, Y.: Analysis of fracture of a turbine blade on a turbojet engine. Eng. Fail. Anal. 14, 87783 (2007)CrossRefGoogle Scholar
  2. 2.
    Ejaz, N., Salam, I., Taugir, A.: An air crash due to failure of compressor rotor. Eng. Fail. Anal. 14, 831–840 (2007)CrossRefGoogle Scholar
  3. 3.
    Carter Tim, J.: Common failure in gas turbine blade. Eng. Fail. Anal. 12, 237–247 (2005)CrossRefGoogle Scholar
  4. 4.
    Hou, J., Wicks, B.J., Antoniou, R.A.: An investigations of fatigue failures of turbine blades in a gas turbine engine by mechanical analysis. Eng. Fail. Anal. 9, 201–211 (2002)CrossRefGoogle Scholar
  5. 5.
    D. Zhang, in Mark analysis in mechanical failure, ed by J.G. Kaufman. Cast Aluminam Typical Properties Structural Alloys Handbook, 1996 (In Chinese), vol. 2 (National Defensive Industry Press, Beijing, 1994)Google Scholar
  6. 6.
    Zhang, D.: Failure Analysis. National Defensive Industry Press, Beijing (2004) (In Chinese)Google Scholar
  7. 7.
    Tao, C.H., Xi, N.S., Xie, M.L., Zhong, P.D., Zhang, Y.: Analysis of turbine blade breakages in an engine starting motor. Eng. Fail. Anal. 6, 245–251 (1999)CrossRefGoogle Scholar

Copyright information

© ASM International 2011

Authors and Affiliations

  1. 1.Beijing Aeronautical Technology Research CenterBeijingChina

Personalised recommendations