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Meeting	ACGS Committee Meeting 99 - Boulder - March 2007
Agenda Location	9 SUBCOMMITTEE D – DYNAMICS, COMPUTATIONS AND ANALYSIS 9.4 Seeded Failure Testing and Analysis of an Electro-Mechanical Actuator
Title	Seeded Failure Testing and Analysis of an Electro-Mechanical Actuator
Presenter	Dave Bodden (Lockheed Martin), Bill Schley (Parker Aerospace), and Gavin Jenney (Dynamic Controls)
Available Downloads*	presentation
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Abstract	An accelerated wear test program for an electromechanical actuator (EMA) was funded and conducted by Parker Aerospace and Lockheed Martin Aeronautics Company. The objective was to identify failure pre-cursors that exhibited repeatable trends, and could be used to construct a remaining useful life algorithm with an identifiable confidence level. Selected mechanical components of the actuator were seeded with an abrasive contaminant to achieve accelerated wear. The desired goal was to achieve component wearout in approximately 24 hours, providing acceptable test times with pre-cursor signatures representative of normal wearout. The test facility and approach is described, along with failure criteria and test results. Although the scope of this effort was relatively limited, it revealed some potentially useful wear indicators, along with many areas of difficulty for which further effort is recommended.