NDLI: Effect of vibration duration on human discomfort. [passenger comfort and random vibration

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Effect of vibration duration on human discomfort. [passenger comfort and random vibration

Content Provider	NASA Technical Reports Server (NTRS)
Author	Clevenson, S. A. Leatherwood, J. D. Dempsey, T. K.
Copyright Year	1978
Description	The duration effects of random vertical vibration on passenger discomfort were studied in a simulated section of an aircraft cabin configured to seat six persons in tourist-class style. Variables of the study included time of exposure (0.25 min to 60 min) and the rms amplitude of vibration (0.025g to 0.100g). The vibrations had a white noise spectrum with a bandwidth of 10 Hz centered at 5 Hz. Data indicate that the discomfort threshold occurred at an rms vertical acceleration level of 0.027g for all durations of vibration. However, for acceleration levels that exceeded the discomfort threshold, a systematic decrease in discomfort occurred as a function of increasing duration of vibration. For the range of accelerations used, the magnitude of the discomfort decrement was shown to be independent of acceleration level. The results suggest that discomfort from vertical vibration applied in the frequency range at which humans are most sensitive decreases with longer exposure, which is the opposite of the recommendation of the International Standard ISO 2631-1974 (E) Guide for the Evaluation of Human Exposure to Whole-Body Vibration.
File Size	4583792
Page Count	26
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19780024774
Archival Resource Key	ark:/13960/t3809wm86
Language	English
Publisher Date	1978-09-01
Access Restriction	Open
Subject Keyword	Behavioral Sciences Human Tolerances Riding Quality Passengers Acceleration Tolerance Comfort Human Factors Engineering Vibration Effects Time Random Vibration Vibration Simulators Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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