NDLI: Conformable Eddy-Current Sensors and Arrays for Fleetwide Gas Turbine Component Quality Assessment

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Goldfine, Neil Schlicker, Darrell Sheiretov, Yanko Washabaugh, Andrew Zilberstein, Vladimir Lovett, Timothy
Copyright Year	2001
Abstract	The conformable Meandering Winding Magnetometer (MWM™) eddy current sensors and MWM-Arrays provide new inspection capabilities for gas turbine components. The sensors provide measurements of coating thickness and absolute electrical conductivity, which can capture features of interest for a population of components, e.g., for tracking fleetwide trends in quality and aging, failure evaluations and correlating failure origins to features of specific fleet population segments. Inspection applications include metallic and nonmetallic coating thickness and porosity measurement, detection of cracks on complex surfaces, imaging and detection of small flaws, thermal degradation monitoring, and cold work quality assessment. For example, the US Air Force uses the MWM for cold work quality control on all of the C-130 propeller blades that go through the Warner Robins ALC. For P-3 and C-130 propeller blades, trend analysis is being performed fleetwide. This paper describes MWM technology advances for absolute property measurements and specific capability demonstrations. Multifrequency quantitative inversion methods used for coating characterization are also used for characterization of process-affected zones, such as shot peen quality or titanium alpha case characterization.
Sponsorship	International Gas Turbine Institute
File Format	PDF
ISBN	9780791878521
DOI	10.1115/2001-GT-0212
Volume Number	Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration
Conference Proceedings	ASME Turbo Expo 2001: Power for Land, Sea, and Air
Language	English
Publisher Date	2001-06-04
Publisher Place	New Orleans, Louisiana, USA
Access Restriction	Subscribed
Subject Keyword	Eddy currents (electricity) Propellers Electrical conductivity Magnetometers Blades Inspection Crack detection Coatings Gas turbines Imaging Eddies (fluid dynamics) Quality control Trend analysis Titanium Winding (process) Sensors Coating processes Air force Porosity Failure
Content Type	Text
Resource Type	Article

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