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Vibration.

Authors
Soule-RD
Source
NIOSH 1973:333-348
Link
NIOSHTIC No.
00074592
Abstract
General principles involved in the recognition, evaluation and control of workers' exposure to vibration are reviewed. Topics include effects of vibration on man, including Raynaud's syndrome; vibration exposure criteria; characteristics of vibration, such as periodic or sinusoidal vibration, displacement, acceleration, and random vibrations; vibration measurements, including basic elements in a measurement system, vibration pick-ups, the preamplifier, analyzers, vibration recorders, accessories, and field measurements; control of vibration, including isolation, reduction of surface response or damping, reduction of mechanical disturbance, and limitations of control measures. Diagrams include a simplified mechanical system representing the human body standing or sitting on a vertically vibrating platform, the basic construction of the Bruel and Kjaer compression type piezo-electric accelerometers, the arrangement of equipment for automatic frequency analysis, and the ground-loop phenomena. Graphs show the transmissibility of vertical vibration from supporting surface to various parts of the body of a standing and sitting human subject as a function of frequency, subjective responses to vibratory motion, vibration exposure criteria curves, representations of pure harmonic and non-harmonic vibration, how a non-harmonic waveform can be broken up into a sum of harmonic related sinewaves, periodic signals and their frequency spectra, and results of loss factor measurements of a sandwich structure. A table gives European industries in which clinical evidence of overexposure of workers to vibration have been reported.
Keywords
Vibration-control; Vibration-disease; Raynaud's-phenomenon; Models; Physiological-responses; Psychological-responses; Nervous-system-disorders; Bone-disorders; Muscular-disorders; Mechanical-properties; Vibration-damping; Hazards; Vibration-meters;
Publication Date
19730101
Fiscal Year
1973
NTIS Accession No.
NTIS Price
Source Name
The Industrial Environment - Its Evaluation and Control, NIOSH, Cincinnati, Ohio, Chapter 26
State
OH;
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