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Journal of Failure Analysis and Prevention

, Volume 13, Issue 4, pp 437–444 | Cite as

Fatigue Fracture of a Compressor Disc of an Aeroengine

  • M. Sujata
  • N. Jagannathan
  • K. Raghavendra
  • C. M. Manjunatha
  • S. K. Bhaumik
Technical Article---Peer-Reviewed

Abstract

There was an accident to a single engine aircraft. From the eye and ear witness accounts, it was established that the accident occurred because of engine failure. After preliminary examination of the wreckage of the crashed engine, a few suspected components were identified for detailed laboratory investigation. The objective was to establish the primary failure in the engine. While majority of the engine components submitted for laboratory analysis showed secondary damages due to either crash impact forces or post-accident fire, the fracture pattern in one of the compressor disks was different from other components of the engine. Fractographic study revealed that the failure of the disk was by fatigue mechanism. Subsequent investigation showed that the fatigue fracture of the compressor disk was the first in the chain of events that led to the engine failure. This finding was further substantiated through fracture mechanics calculations.

Keywords

Aeroengine failure Compressor disk Fatigue fracture Stress analysis 

Notes

Acknowledgments

The authors thank Director, the NAL for granting permission to publish this article. The contribution of Mr. M. Madan in sample preparation and experimentation is gratefully acknowledged.

References

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    Daniel, P.: Dennies: How to Organize and Run a Failure Investigation. ASM International, Materials Park (2005)Google Scholar

Copyright information

© ASM International 2013

Authors and Affiliations

  • M. Sujata
    • 1
  • N. Jagannathan
    • 1
  • K. Raghavendra
    • 1
  • C. M. Manjunatha
    • 1
  • S. K. Bhaumik
    • 1
  1. 1.Council of Scientific and Industrial Research (CSIR)National Aerospace LaboratoriesBangaloreIndia

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