VIBRATION PHASE ANALYSIS

Phase analysis should be used on machine problems when the source of the vibration is not clear or when it is necessary to confirm suspected.
Phase is the relationship between two signals of the same frequency, measured in degrees. A phase study is simply a collection of phase measurements made on a machine that is evaluated to reveal information about relative motion between measurement points. Phase is independent of amplitude. That is to say that each signal may have different amplitudes and still be evaluated for specific phase characteristics.