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Vibration can cause both discomfort and permanent damage. Vibration can be classified as: 

  •  Temporal vibration, or repetitive motion (caused, for example, by rotation) 

  •  Random vibration (caused, for example, by traveling on uneven surfaces) 

  •  Shock vibration (caused by a hammer blow, for example) 

Vibration is divided into Hand-and-Arm Vibration (HAV) and Whole-Body-Vibration (WBV). Causes and consequences vary depending on which is the case. In most cases, vibration and its effects are undesirable. 

The effects and consequences depend on amplitude, frequency and time. If the displacement is major, the movement is rapid and the vibration lasts long, the effects and consequences will be greater.