抄録
This paper presents the comparison of the guidance for assessing the severity of whole-body
vibration in ISO 2631/1 (1985) and ISO 2631-1 (1997) standards. The vibration in CH-47J helicopter
and C-130H aircraft has been evaluated with both ISO methods. In both CH-47 and C-130H, the
present standard ISO2631-1 (1997) provided shorter exposure limits than those of ISO 2631/1 (1985).
Comparing the frequency-weighting curve between both standards, the difference of the weighting
factor in z-axis induced the shorter exposure limits of 4 hours in CH-47J and 2 hours in C-130H. The
present study suggested revision should be made in aircrafts vibration evaluated previously.
