Earth moving machine whole-body vibration and the contribution of Sub-1Hz components to ISO 2631-1 metrics.
Exposure to whole-body vibration (WBV) is an occupational hazard for operators of industrial vehicles, such as earth-moving machines. Quantification of WBV exposure in terms of impact on health forms one aspect of the Standard ISO 2631-1 (1997). Regarding assessment of risk to health, ISO 2631-1 (1997) states that if WBV components below 1 Hz are not ;relevant nor important' then they can be excluded from the assessment. In this paper the influence of sub-1 Hz components in WBV acquired from a sample of 46 earth moving machines is evaluated in terms of their contribution to ISO 2631-1 WBV exposure dose metrics: frequency weighted r.m.s. and the vibration dose value (VDV). For the majority of machines, a high proportion of the horizontal (x- and y-axis) WBV r.m.s. and VDV values was generated by sub-1 Hz vibration components; there was a much lower proportion of the vertical (z-axis) vibration generated by such components.
Mansfield
Neil J
NJ
Department of Human Sciences, Loughborough University, Loughborough, Leics, LE11 3TU, UK.
Newell
Geraldine S
GS
Notini
Luca
L
D004574:Electromagnetic Fields; D006801:Humans; D008328:Man-Machine Systems; D016273:Occupational Exposure; D018570:Risk Assessment / Q000592:standards*; D014732:Vibration / Q000009:adverse effects*