1. Monitoring policies
1.1 Periodic follow-up
Periodic monitoring (or continuous monitoring) of machines, generally as part of a conditional maintenance policy, enables a programmed alarm to be triggered. Depending on the type of fault(s) feared and the complexity of its (or their) detection, this is determined by the choice of an indicator representative of the degradation and by the determination of an amplitude threshold deemed critical, over a defined frequency range.
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The chosen indicator can represent :
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or a physical quantity (displacement, speed or acceleration of the vibratory movement) :
displacement for defects whose vibratory...
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Monitoring policies
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