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Turbine Problems

 

 

Vibration Source

 

 

Exciting Frequency

 

Dominant Plane

 

Amplitude

 

Envelope Characteristics

 

Comments

Rotor Clearance Problem

blade pass rate

radial

steady

narrow band

 

Turbine Blade

Damage

1X and harmonics,

blade pass

radial

steady

narrow band

harmonics usually higher in level than 1X

1X sidebands around blade pass





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