Main defects
Vibration analysis of rotating machines
Article REF: BM5145 V1
Main defects
Vibration analysis of rotating machines

Author : David AUGEIX

Publication date: January 10, 2001 | Lire en français

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5. Main defects

This section gives an overview of the main faults and their vibratory manifestations that can be encountered on conventional rotating machines.

5.1 Unbalance (or imbalance)

  • Events :

    • increase in the overall level selected for low frequencies :

      • i.e. D c c [10-1,000 Hz],

      • i.e. V eff [10-1,000 Hz] ;

    • clear increase in the amplitude of the fundamental frequency (rotation frequency, fr ) : fr=N/60

      ...
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