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FAILURE ANALYSIS OF GE-F9 GAS TURBINE JOURNAL BEARINGS

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This paper presents a failure analysis of journal bearings used in GE-F9 gas turbines. Detailed studies including visual examination, optical microscopy, scanning electron microscopy, XRD and oil analysis were performed to determine the root causes of failure . Based on the results , it was determined that fretting, sulfur attack and fatigue were the main causes of failure.

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