1. Will loose rotor bars be at RBPF or WSPF
My thinking is if you have a loose rotor bar every time it passes a winding slot the magnetic force causes the rotor bar to lift and drop at the rate of the number of slots; therefore a loose rotor bar will be at the WSPF with 2XFline sidebands?
2. Will looseness in the winding slots be at RBPF or WSPF?
Again along the thinking above would this then be at RBPF with 2XFline sidebands as every time a rotor bar passes a loose winding in the slot the magnetic forces cause the winding to lift and drop and the rate of the number of rotor bars?
3. Cracked rotor bars:
To confirm this will be FPole sidebands surrounding running speed harmonics. Advance problems will exhibit a humming or pulsing sound and feel. Significant is the number and size of the sidebands, they increase as the unit deteriorates. Amplitude at 1xrpm is relatively unimportant it will fluctuate greatly as hot spots cause the rotor to bow unpredictably
What do you all think?