3.2. Vibration Dose Values (VDV)
When the motion of a vehicle includes shocks or impulsive velocity
changes, the VDV is considered more suitable for vibration
assessment.4, 10 It gives a measure of the total exposure to
vibration, taking into account the magnitude, frequency, and
exposure duration. The VDV reflects the total, rather than
the average, exposure to vibration over the measurement period
and is considered more suitable when the vibration signal
is not statistically stationary.10 It is calculated by the fourth
root of the integral with respect to the time of the fourth power
of the acceleration after it has been weighted. The use of the
fourth-power method makes the VDV more sensitive to peaks
in the acceleration waveform. Intermittent vibration can be defined
as interrupted periods of continuous or repeated periods
of impulsive vibration, or continuous vibration that varies significantly
in magnitude. Thus, the VDV (ms