Faults / defects / illnesses
imbalance
misalignment (angular / parallel)
mechanical looseness
suction cavitation @ classical cavitation
discharge cavitation @ internal re-circulation cavitation
Gear Mesh Frequency (GMF)
Vane Pass Frequency (VPF) @ Blade Pass Frequency (BPF)
broken rotor bar
various problems for anti-friction bearing @ rolling-element bearing
various problems for fluid-film bearing

Related topics
bathtub curve
Weibull distribution
natural frequency , critical speed
time domain , frequency domain , spectrum , cepstrum
harmonics
bearing life as per ISO 281
FFT , Laplace Transform , bode-plot , orbit plot , polar plot , nyquist plot , root-locus plot
bandwith
mode shape
kinematic relationship
synchronous, sub-synchronous , non-synchronous
vibration white finger (VWF)
uniform , hanning , flat top
eddy probe @ proximity probe, accelerometer
classical resonance (my own term) , Helmholtz resonance
surge , stall , choke

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