Download Handbook of Human Vibration by M. J. Griffin PDF

By M. J. Griffin

This booklet explains, in concise chapters, the variety and complexity of what's identified referring to human responses to vibration. The publication covers either entire physique vibration and hand-transmitted vibration and includes pictorial versions of the correct variables, in addition to experimental information and epidemiological reports. The research of human vibration accommodates psychology, arithmetic, body structure, engineering, medication, and facts, and the Handbook of Human Vibration is written to help either scholars of the topic and people addressing useful difficulties. The textual content doesn't rely on a sophisticated wisdom of arithmetic or a familiarity with the jargon from a few of the disciplines, and is out there to all people attracted to human vibration, together with doctors, engineers, legal professionals, scientists, exchange union officers and administrators.

  • Summarizes present figuring out of the numerous human responses to vibration, together with either whole-body and hand-transmitted vibration
  • Presents experimental facts and acceptable versions in order that readers can deal with useful problems
  • Contains a wide, multidisciplinary word list of terms
  • Features an intensive bibliography and consultant to nationwide and overseas standards

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Example text

People will often modify their judgements according to their expectations, so that what is considered 'comfortable' in one environment may be classed as 'uncomfortable' in another. For this reason, the absolute degree of discomfort reported by laboratory subjects may be of little significance while their judgements of which of two or more stimuli causes most discomfort can be of great value. 2 Experimental m e t h o d s Vibration of different frequencies or in different axes can produce widely differing sensations in different parts of the body (Whitham and Griffin, 1978b).

2 Intra-subject variability The differences that occur within individuals are due to changes in their response over time, either from one moment to the next or over a much longer period. All the variables which alter the response of a single individual also give rise to differences between individuals. Again, variations in body posture have very large effects which can easily be demonstrated in many vibration environments. The influence of experience and training can be especially important and this may give rise to problems with the design of experiments.

Of different frequencies) are judged. e. method of adjustment). e. method of limits). However, both methods can result in a bias towards low settings, probably because subjects do not like exposing themselves to uncomfortable stimuli (Griffin and W h i t h a m , 1976). Furthermore, where stimuli are presented in pairs, there is evidence that subjects overestimate the discomfort of the second stimulus (Griffin a n d W h i t h a m , 1980a). 4). There are many useful variations on the above psychophysical methods.

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