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Subjective ratings of whole-body vibration for single- and multi-axis motion
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10.1121/1.3654014
/content/asa/journal/jasa/130/6/10.1121/1.3654014
http://aip.metastore.ingenta.com/content/asa/journal/jasa/130/6/10.1121/1.3654014

Figures

Image of FIG. 1.
FIG. 1.

Example power spectral density (PSD) for single axis z-direction vibration. Also, PSDs measured simultaneously in orthogonal directions.

Image of FIG. 2.
FIG. 2.

Laboratory setup showing seating posture.

Image of FIG. 3.
FIG. 3.

Normalized subjective ratings of vibration intensity for 15 subjects exposed to single-axis vibration in the x, y, and z axes. Each data point represents the mean of three repeats. Lines connect data points for each subject.

Image of FIG. 4.
FIG. 4.

Normalized subjective ratings of vibration intensity for 15 subjects exposed to dual-axis vibration at 0.4 ms−2 rms in the x-y, x-z, and y-z axes. Each data point represents the mean of three repeats.

Image of FIG. 5.
FIG. 5.

Normalized subjective ratings of vibration intensity for 15 subjects exposed to 15 tri-axial vibration stimuli. Each data point represents the mean of three repeats. Regression lines are shown for each subject.

Image of FIG. 6.
FIG. 6.

Comparison of median measured normalized responses for subjects exposed to dual-axis and tri-axial vibration, and predicted normalized responses based on results from single-axis vibration components.

Image of FIG. 7.
FIG. 7.

Median normalized ratings of vibration intensity for single-axis, dual-axis, and tri-axial rss vibration for weighted and unweighted data.

Image of FIG. 8.
FIG. 8.

Contour map showing correlation coefficients for subjective response compared to vibration magnitude scaled with a range of values of x- and y-axis multiplier. The factors in ISO 2631-1 (1.0, 1.0, and 1.4, 1.4) and those suggested in Marjanen and Mansfield (2.7, 1.8) are highlighted.

Tables

Generic image for table
TABLE I.

Summary of stimuli used in the experiment.

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/content/asa/journal/jasa/130/6/10.1121/1.3654014
2011-12-15
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Subjective ratings of whole-body vibration for single- and multi-axis motion
http://aip.metastore.ingenta.com/content/asa/journal/jasa/130/6/10.1121/1.3654014
10.1121/1.3654014
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