Effect of reclining a seat on the discomfort from vibration and shock on fast boats
Effect of reclining a seat on the discomfort from vibration and shock on fast boats
Passengers and crew on fast boats can experience high magnitudes of whole-body vibration and mechanical shocks that may present risks to health and cause discomfort. This study investigated the influence of reclining a seat on the discomfort caused by fast-boat motion and whether discomfort can be predicted by overall ride values according to current standards. Subjects judged the discomfort of simulations of a recorded fast boat motion in a seat reclined by 0°, 15°, 30°, 45°, or 60°. Reclining the seat caused no significant change in overall discomfort, suggesting that if a reclined seat can be shown to reduce risks of injury it may be acceptable in respect of comfort. The findings are inconsistent with the predictions of standards and show that revised frequency weightings are required to account for seat pan or seat back inclination.
Practitioner Summary: Contrary to predictions of current standards, reclining a seat may not increase discomfort during fast-boat motion. Revised frequency weightings for evaluating the severity of whole-body vibration are required to account for seat pan or seat back inclination.
whole-body vibration, shock, discomfort, boats, reclined seats
1151-1161
Howarth, Henrietta V.C.
48988c97-ff47-46ba-8fe7-0aed23759a28
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
1 July 2015
Howarth, Henrietta V.C.
48988c97-ff47-46ba-8fe7-0aed23759a28
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Howarth, Henrietta V.C. and Griffin, Michael J.
(2015)
Effect of reclining a seat on the discomfort from vibration and shock on fast boats.
Ergonomics, 58 (7), , [7].
(doi:10.1080/00140139.2014.961970).
Abstract
Passengers and crew on fast boats can experience high magnitudes of whole-body vibration and mechanical shocks that may present risks to health and cause discomfort. This study investigated the influence of reclining a seat on the discomfort caused by fast-boat motion and whether discomfort can be predicted by overall ride values according to current standards. Subjects judged the discomfort of simulations of a recorded fast boat motion in a seat reclined by 0°, 15°, 30°, 45°, or 60°. Reclining the seat caused no significant change in overall discomfort, suggesting that if a reclined seat can be shown to reduce risks of injury it may be acceptable in respect of comfort. The findings are inconsistent with the predictions of standards and show that revised frequency weightings are required to account for seat pan or seat back inclination.
Practitioner Summary: Contrary to predictions of current standards, reclining a seat may not increase discomfort during fast-boat motion. Revised frequency weightings for evaluating the severity of whole-body vibration are required to account for seat pan or seat back inclination.
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Author accepted manuscript
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Accepted/In Press date: 1 July 2014
e-pub ahead of print date: 17 October 2014
Published date: 1 July 2015
Keywords:
whole-body vibration, shock, discomfort, boats, reclined seats
Organisations:
Inst. Sound & Vibration Research
Identifiers
Local EPrints ID: 372515
URI: http://eprints.soton.ac.uk/id/eprint/372515
ISSN: 1366-5847
PURE UUID: de47130e-ca1c-4c32-9e6f-6d0e753b0540
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Date deposited: 05 Dec 2014 16:46
Last modified: 14 Mar 2024 18:38
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Author:
Michael J. Griffin
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