Affiliation:
1. GE Global Research Center, Niskayuna, NY 12309
2. GE Aviation, Evendale, OH 45215
Abstract
The differential bearing between the low-pressure turbine (LPT) and high-pressure turbine (HPT) shafts is one of the most vulnerable parts in a turbomachinery engine. Unfortunately, it is also one of the most difficult parts to monitor for damage existence signatures, because the signal-to-noise ratio at the normal sensor locations is extremely low. In addition, the speed variations in both the LPT and HPT can further deteriorate the damage signature extracted by conventional analysis methods. In this paper, we developed a “synthesized synchronous sampling” technique to enhance the detection of differential bearing damage signature. Combining this technique together with the conventional acceleration enveloping technique, we are able to detect differential bearing damage at a much earlier stage, thus providing early warnings of the machinery health conditions.
Subject
Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering
Reference19 articles.
1. The Vibration Monitoring of Rolling Element Bearings by the High-Frequency Resonance Technique—A Review;McFadden;Tribol. Int.
2. Howard, I.
, 1994, “A Review of Rolling Element Bearing Vibration Detection, Diagnosis and Prognosis,” DSTO Aeronautical and Maritime Research Laboratory, Melbourne, Australia, Paper No. DSTO-RR-0013.
3. Model for the Vibration Produced by a Single Point Defect in a Rolling Element Bearing;McFadden;J. Sound Vib.
Cited by
30 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献