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2. Measurements and analysis of diagnostic signals.

Question 2.3.

 Why you do not use the shock pulse method to detect the rolling element bearings' faults? The question was asked by "SKF" specialists.

The question is answered by Natalia A. Barkova:

he shock pulse method is used but only as a part of more general method of detection the shocks (oscillations) of high frequency vibration power of any unit where the mechanical, hydrodynamical or aerodynamical friction forces act. And as these oscillations in the defective units not always have a large value but practically always are periodical instead of detecting them in the time signal they are detected in the spectrum of power oscillations (envelope spectrum) of their high frequency vibration.



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