Defect investigation of failed VIth stage compressor rotor rig blades
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Defect investigation of failed VIth stage compressor rotor rig blades
|
|
| Creator |
Parameswara, MA
Sujata, M Venkataswamy, MA Suresh Kumar, M Madan, M Bhaumik, SK |
|
| Subject |
Aeronautics (General)
Chemistry and Materials (General) |
|
| Description |
Out of the 41 blades referred to NAL, 36 blades have failed by fatigue. In all the blades, the fatigue cracks were similar in nature and they got initiated at the convex and/or concave surface of the airfoil just above the blade root platform. There were no metallurgical and/or mechanical abnormalities at the fatigue crack origins. The fatigue is stress related and of high cycle – low stress type. Failing of about 85% of the blades by fatigue is unusual and cannot happen unless there is wrong material selection and/or resonance in the blades.
|
|
| Publisher |
National Aerospace Laboratories
|
|
| Date |
2005
|
|
| Type |
Proj.Doc/Technical Report
NonPeerReviewed |
|
| Identifier |
Parameswara, MA and Sujata, M and Venkataswamy, MA and Suresh Kumar, M and Madan, M and Bhaumik, SK (2005) Defect investigation of failed VIth stage compressor rotor rig blades. Project Report. National Aerospace Laboratories, Bangalore.
|
|
| Relation |
http://nal-ir.nal.res.in/10120/
|
|