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Analysis of High-Speed Engine Valve Vibrations Using Statistical Methods
High-speed engines used in natural gas gathering applications have been shown to have a history of power valve failures. This is especially true for exhaust valves, due to the high temperature environment to which the valve is exposed. Last year, a methodology for analyzing valve closing events using statistical techniques was proposed. Refinements to the statistical techniques used to analyze valve vibration events are discussed. In addition, cause and effect data showing correlation between the statistical analysis and actual mechanical performance will be discussed. This paper will present first-order differences between a nominally healthy valve and one that is potentially approaching failure. The differences are determined using statistical methods and verified by analysis of the actual mechanical components.
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