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|Title: ||Subjective ratings of whole-body vibration for single- and multi-axis motion|
|Authors: ||Mansfield, Neil J.|
|Issue Date: ||2011|
|Publisher: ||© Acoustical Society of America|
|Citation: ||MANSFIELD, N.J. and MAEDA, S., 2011. Subjective ratings of whole-body vibration for single- and multi-axis motion. Journal of the Acoustical Society of America, 130 (6), pp.3723-3728.|
|Abstract: ||Real-world whole-body vibration exposures comprise motion in fore-aft, lateral and
vertical directions simultaneously. There can also be components of roll, pitch and yaw.
If evaluating vibration with respect to human response, most investigators will use
methods defined in ISO 2631-1. This uses frequency weightings that were originally
derived from laboratory studies of the subjective responses to vibration in one direction
at a time. This paper describes experiments carried out using a 6 degree-of-freedom
vibration simulator to validate the applicability of ISO 2631-1 in multi-axis environments.
15 subjects were exposed to 87 stimuli comprising single-axis, dual-axis and tri-axial
random vibration, to which they were required to produce subjective ratings. It is shown
that in this study the root-sum-of-squares method of summation of subjective ratings in
individual axes was an adequate technique for prediction of subjective rating of multiaxis
vibration. Better agreement between objective and subjective measures of
vibration was obtained for unweighted vibration than for frequency weighted signals.
The best agreement for this study was achieved when axis multiplying factors were set
at 2.2 and 2.4 for x- and y-axis vibration respectively. Different values could be
appropriate for other postures, seats, and vibration conditions and should be
determined in future studies.|
|Version: ||Accepted for publication|
|Publisher Link: ||http://dx.doi.org/10.1121/1.3654014|
|Appears in Collections:||Published Articles (Design School)|
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