Analysis of fatigue tested IC engine exhaust valves
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Analysis of fatigue tested IC engine exhaust valves
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| Creator |
Suresh Kumar, M
Madan, M Venkataswamy, MA Parameswara, MA Sujata, M Bhaumik, SK |
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| Subject |
Aeronautics (General)
Chemistry and Materials (General) |
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| Description |
Three rotating bending fatigue tested valves identified as A-2, A-3 and A-4 (part No. 84C640016) were sent to the laboratory for examination. The failure in valves A-2 and A-4 was found to be at the neck region as expected according to the test design. The failure in valve A-3 was at the weld, which was unusual since the maximum bending moment on the valve during the test was at the neck region. Examination revealed that the failure in this valve (A-3) was due to presence of a nonmetallic inclusion at the weld interface. Analysis shows that the inclusion had resulted due to contamination of the surface (s) during the fabrication of the valve. No metallurgical abnormalities in the raw material were responsible for the failure.
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| Publisher |
National Aerospace Laboratories
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| Date |
2005
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| Type |
Proj.Doc/Technical Report
NonPeerReviewed |
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| Identifier |
Suresh Kumar, M and Madan, M and Venkataswamy, MA and Parameswara, MA and Sujata, M and Bhaumik, SK (2005) Analysis of fatigue tested IC engine exhaust valves. Project Report. National Aerospace Laboratories, Bangalore.
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| Relation |
http://nal-ir.nal.res.in/9903/
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