Turbomachinery prognostics and health management via eddy current sensing: current developments

摘要: This paper describes selected aspects of an ongoing program prognostics and health management for jet engines other turbomachinery. The primary enabling technology developed to date is a magnetic sensor relying its operation on high-frequency eddy currents actively induced in passing fan or turbine blades. We summarize the principles, sketch processing approach used extract health-related information from output, illustrate performance with results engine tests, describe near-term continuing which integrated.