Madan, M and Sujata, M and Bhaumik, SK (2011) Failure analysis of O-rings. Project Report. National Aerospace Laboratories, Bangalore, India.
Full text not available from this repository.Abstract
Two failed O-rings from the electro selector assembly belonging to an aircraft were sent to this laboratory for investigation. Examination showed that in both the O-rings, loss of material occurred by wear over a period of time. The wear pattern and the morphology of the worn out surface indicated that there was looseness in the O-rings which resulted in improper seating of the O-rings on the groove. Because of this, during motion of the piston, a sector of the rings had undesirable contact with the moving surfaces leading to accelerated wear on a sector of the rings. Analysis suggests that the failure was facilitated due to oversize of the O-rings and/or undersize of the groove on the piston. Evidences do not suggest any deficiencies in the material and/or deterioration in the material in service responsible for the failure.
| Item Type: | Proj.Doc/Technical Report (Project Report) |
|---|---|
| Uncontrolled Keywords: | Electro-selector assembly;O-rings; wear failure |
| Subjects: | AERONAUTICS > Aeronautics (General) CHEMISTRY AND MATERIALS > Chemistry and Materials (General) |
| Division/Department: | Materials Science Division, Materials Science Division, Materials Science Division |
| Depositing User: | Ms. Alphones Mary |
| Date Deposited: | 08 Jul 2011 13:41 |
| Last Modified: | 08 Jul 2011 13:41 |
| URI: | http://nal-ir.nal.res.in/id/eprint/9299 |
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