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The Analysis of Crack Mechanism and Estimate of Life Time by the Vibration Measurement of Stainless Exhaust Manifold in Firing Condition
Technical Paper
2013-01-2643
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
SUS exhaust manifold is weaker than cast iron in aspect of high temperature vibration. So as to improve reliability of SUS exhaust manifold and get over gas temperature limit, exhaust manifold vibration mode and level has to be decreased.
And because of error and limit of conventional modal analysis, we measured vibration mode and level of SUS exhaust manifold directly in engine firing condition.
To measure vibration of hot parts(600∼800°C) in engine, we used special cooling device at base of accelerometer.
Thus we developed analysis method of SUS exhaust manifold crack mechanism. We came to know the accurate vibration mode and level of SUS exhaust manifold in hot condition.
Besides, we found out in proportion as vibration level increases endurance life decreases.
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Topic
Citation
Kim, H. and Park, S., "The Analysis of Crack Mechanism and Estimate of Life Time by the Vibration Measurement of Stainless Exhaust Manifold in Firing Condition," SAE Technical Paper 2013-01-2643, 2013, https://doi.org/10.4271/2013-01-2643.Also In
References
- Steidel Robert F. Jr. Mechanical Vibration Berkeley, California 1992
- Mamiya , N. , Masuda , T. , and Noda , Y. Thermal Fatigue Life of Exhaust Manifolds Predicted by Simulation SAE Technical Paper 2002-01-0854 2002 10.4271/2002-01-0854
- Datta , P. and Liddy , R. Correlation Study of Exhaust Manifold - Lab Test Results vs Customer Fleet Results SAE Technical Paper 2002-01-1317 2002 10.4271/2002-01-1317