Description of a Vibration Diagnostic Trending Approach for a Condition Monitoring System for the LM2500 Gas Turbine

In a gas turbine marine propulsion installation, especially a military type role, the design of an effective gas turbine vibration diagnostic system must provide both technical information for maintenance and operational risk assessment for continued engine operation. In order to fulfill these criteria, a vibration monitoring system must provide not only a feedback of measured vibration levels, it must also provide an interpretation of those levels. This paper describes a potential approach to trending LM2500 gas turbine generated vibration data for use in a condition monitoring system.