Failure analysis of TGB housing of a helicopter
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Failure analysis of TGB housing of a helicopter
|
|
| Creator |
Madan, M
Venkataswamy, MA Sujata, M Bhaumik, SK |
|
| Subject |
Aeronautics (General)
Chemistry and Materials (General) |
|
| Description |
The TGB housing had a 14 mm long fatigue crack at the fillet of the lug fusing area of one of the mounting lugs. Examination revealed that the fatigue crack initiation was due to presence of a mechanical stress raiser at the fillet. There were no metallurgical abnormalities and/or casting defects such as voids/porosity at the fatigue crack origin. A series of similar failure on the TGB housings has been investigated in this laboratory in the recent past. Analysis shows that it is necessary to incorporate design modification to prevent early fatigue crack initiation (refer NAL report Nos. MT-FA-946-09-2005 and MT-FA-958-12-2005).
|
|
| Publisher |
National Aerospace Laboratories
|
|
| Date |
2005
|
|
| Type |
Proj.Doc/Technical Report
NonPeerReviewed |
|
| Identifier |
Madan, M and Venkataswamy, MA and Sujata, M and Bhaumik, SK (2005) Failure analysis of TGB housing of a helicopter. Project Report. National Aerospace Laboratories, Bangalore.
|
|
| Relation |
http://nal-ir.nal.res.in/9901/
|
|