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Failure analysis of 1st stage compressor rotor blades of an aeroengine

IR@NAL: CSIR-National Aerospace Laboratories, Bangalore

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Title Failure analysis of 1st stage compressor rotor blades of an aeroengine
 
Creator Bhaskaran, TA
Venkataswamy, MA
Sujata, M
Keshab, Barai
Bhaumik, SK
 
Subject Aeronautics (General)
Chemistry and Materials (General)
 
Description Blade No. 192 of the 1st stage compressor rotor of an aeroengine had failed by fatigue. The fatigue appears to be of high cycle – low stress type and stress related. It appears most probable that due to modification at the base of the blades, the movement of the blades during engine run was restricted. This might have resulted in improper butting of the dovetail flank of the blades with the disc resulting in fatigue crack initiation. The rubbing at the tip of the blades is secondary in nature and subsequent to the primary fatigue failure of blade No. 192.
 
Publisher National Aerospace Laboratories
 
Date 2003
 
Type Proj.Doc/Technical Report
NonPeerReviewed
 
Identifier Bhaskaran, TA and Venkataswamy, MA and Sujata, M and Keshab, Barai and Bhaumik, SK (2003) Failure analysis of 1st stage compressor rotor blades of an aeroengine. Project Report. National Aerospace Laboratories, Bangalore.
 
Relation http://nal-ir.nal.res.in/9815/