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3D transmissibility and relative transmissibility of immobilized supine humans during transportation
Journal article   Peer reviewed

3D transmissibility and relative transmissibility of immobilized supine humans during transportation

John Meusch and Salam Rahmatalla
Journal of low frequency noise, vibration, and active control, Vol.33(2), pp.125-138
2014
DOI: 10.1260/0263-0923.33.2.125

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Abstract

The three-dimensional translational multi-input/output relative transmissibility and the transmissibility of supine humans during transportation were introduced in this work and were compared with the single-axis input/output condition. Eight healthy subjects were tested under multi-axis input/output whole-body vibration of white noise random signals with frequency content of 0.5–20 Hz and vibration magnitude of 1 m/s2 RMS applied at the platform level, considering three immobilization conditions: rigid-platform, litter-board, and litter-board-collar. The results showed the diagonal components of the multi-axis input/out transmissibility and relative transmissibility to be considerably larger than their out-of-diagonal components. Significant correlations (R2 > 0.93) were found between the diagonal components of the transmissibility of the multi-axis input/output and those of the individual single-axis input/output whole-body vibrations; however, weaker correlation (R2 > 0.11) was shown between their cross-axis components.

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