2. Defects and signs
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2.1.1 Rotor mass imbalance. Unbalance
No matter how carefully a machine is built, it is not possible to align the axis of rotation with the center of gravity of each individual rotor section, which is what characterizes unbalance. As a result, the rotating shaft is subjected to centrifugal forces that deform it. These forces result in vibrations linked to the rotation frequency .
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Defects and signs
Bibliography
References
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(1) - MOREL (J.) - Vibrations des machines et diagnostic de leur état mécanique. - Collection de la Direction des Études et Recherches EDF, Éditions EYROLLES (1992).
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(2) - BALLESTER (J.L.) - Influence de l'alignement des paliers sur la statique et la dynamique des rotors. Essais de...
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