DocumentCode
2298408
Title
Monitoring blade passage in turbomachinery through the engine case (no holes)
Author
Roeseler, Cory ; Flotow, Andy Won ; Tappert, Peter
Author_Institution
Hood Technol. Corp., Hood River, OR, USA
Volume
6
fYear
2002
fDate
2002
Firstpage
447575
Abstract
It is possible to detect passage of turbomachinery blades without penetrating the engine case. This "look through the wall" eddy current sensor eases the addition of a PHM system to an engine. This paper introduces this sensing concept, summarizes the physics, and presents results of preliminary tests. Blade material and geometry, case material, thickness and temperature, blade tip clearance, sensor detail and design and blade tip velocity all affect the strength and quality of the signal detected.
Keywords
aerospace engines; aerospace testing; eddy current testing; gas turbines; monitoring; PHM system; blade material; blade passage monitoring; blade tip clearance; blade tip velocity; case material; eddy current sensor; engine case; gas turbine engine; look through the wall sensor; preliminary tests; turbomachinery; Blades; Eddy currents; Engines; Monitoring; Physics; Prognostics and health management; Sensor systems; Temperature sensors; Testing; Turbomachinery;
fLanguage
English
Publisher
ieee
Conference_Titel
Aerospace Conference Proceedings, 2002. IEEE
Print_ISBN
0-7803-7231-X
Type
conf
DOI
10.1109/AERO.2002.1036153
Filename
1036153
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