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기술보고서

기술보고서 게시판 내용
타이틀	Investigation of Bearing Fatigue Damage Life Prediction Using Oil Debris Monitoring
저자	Dempsey, Paula J.;; Bolander, Nathan;; Haynes, Chris;; Toms, Allison M.
Keyword	DATA ACQUISITION;; DETECTION;; FATIGUE (MATERIALS); HELICOPTERS;; INDUCTANCE;; LIFE (DURABILITY); PREDICTIONS;; ROLLER BEARINGS;; ROTARY WING AIRCRAFT;; SHAFTS (MACHINE ELEMENTS); TRANSMISSIONS (MACHINE ELEMENTS)
URL	http://hdl.handle.net/2060/20110023753
보고서번호	NASA/TM-2011-217117
발행년도	2011
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Research was performed to determine if a diagnostic tool for detecting fatigue damage of helicopter tapered roller bearings can be used to determine remaining useful life (RUL). The taper roller bearings under study were installed on the tail gearbox (TGB) output shaft of UH- 60M helicopters, removed from the helicopters and subsequently installed in a bearing spall propagation test rig. The diagnostic tool was developed and evaluated experimentally by collecting oil debris data during spall progression tests on four bearings. During each test, data from an on-line, in-line, inductance type oil debris sensor was monitored and recorded for the occurrence of pitting damage. Results from the four bearings tested indicate that measuring the debris generated when a bearing outer race begins to spall can be used to indicate bearing damage progression and remaining bearing life.