Abstract
According to the structure features of turbine casing, an experimental device which is used to study on local rub-impact fault was designed. When the high and low rotors are counter-rotating , by using the counter-rotating dual-rotor experimental apparatus as platform, the vibration characteristics excited by high rotor local rub-impact fault and low rotor local rub-impact fault were studied through the experiment. The experimental results show that when local rub-impact fault occurs on counter-rotating dual-rotor, there will be high harmonics, low harmonics and combined frequencies in the vibration signal of stator. And the position of the local rub-impact fault can be defined by analyzing the combined frequencies.
| Original language | English |
|---|---|
| Pages (from-to) | 31-36 |
| Number of pages | 6 |
| Journal | Tuijin Jishu/Journal of Propulsion Technology |
| Volume | 34 |
| Issue number | 1 |
| State | Published - Jan 2013 |
Keywords
- Aeroengine
- Combined frequencies
- Counter-rotating dual-rotor
- Fault diagnosis
- Local rub-impact