Fatigue fracture of a compressor blade of an aeroengine: what caused this failure?

Sujata, M and Bhaumik, SK (2015) Fatigue fracture of a compressor blade of an aeroengine: what caused this failure? Journal of Failure Analysis and Prevention, 15 (4). pp. 457-463. ISSN 1547-7029

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Abstract

The success of failure analysis depends on the use of appropriate analytical techniques in proper sequence. The approach and the methodology to be adopted for a particular failure investigation largely depend on the nature of failure. Collection of background information leading to development of a complete case history of the failure is, therefore, essential. This is followed by examination of the components, to establish the physical cause of failure, mostly through metallurgical investigation and evaluation of the material of construction. Metallurgical investigation can pinpoint the physical cause of failure but often falls short of identifying the true cause of failure. It has been seen that many a time, the true cause of failure is not established due to overlooking of minor details and not because of lack of advanced knowledge. This aspect of failure analysis has been highlighted in this article through a practical example. The failure involved fatigue fracture of a high pressure compressor blade of an aeroengine. The failure occurred within 12.2 h of engine run on the test bed.

Item Type:	Article
Additional Information:	Copyright to this article belongs to M/s. Springer
Uncontrolled Keywords:	Failure analysis;Background information;Physical cause of failure;True cause of failure
Subjects:	AERONAUTICS > Aeronautics (General)
Depositing User:	Ms. Alphones Mary
Date Deposited:	15 Apr 2016 04:56
Last Modified:	15 Apr 2016 04:56
URI:	http://nal-ir.nal.res.in/id/eprint/12454

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