Transmission of Vibration from Tool Handle to Wrist and to Head

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概要

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• Transmission of vibration from the handle of the tool to the handarm system was investigated by measuring vibration in pairs from the source and from the wrist and head. The frequency response function was applied to describe the transmission properties. The measurements were taken at work places to evaluate the effect of different work-related factors on the transmission. Laboratory measurements were conducted to evaluate the effect of different grip forces and the use of protective gloves on the transmission. The field measurements comprised five different groups of workers whose exposure to vibration was evaluated and whose observed symptoms of vibration-induced white finger (VWF) was compared to the predicted ones based on the exposure data and on ISO 5349. The comparison of the prevalence data was in good agreement for the forest workers. The ISO method seemed to underestimate the genesis of VWF in workers who had to use high grip forces and for whom the vibration comprised high values of impulsiveness. The present results suggest that the frequency response function as independent of the input signal may thus describe factors important to the transmission of vibration.

• 久留米大学医学部 The Kurume Medical Journal 編集部の論文

著者

• Liu Chang

  Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences

• Starck Jukka

  Institute of Occupational Health, Department of Physics

• PEKKARINEN JUSSI

  Institute of Occupational Health, Department of Physics

• STARCK JUKKA

  Institute of Occupational Health, Laajaniityntie

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• Transmission of Vibration from Tool Handle to Wrist and to Head

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