Measuring method of driver's vibration exposure for machine powered garden vehicles

Aulis Liljeroos

Research output: Book/ReportReport

Abstract

When the vibration exposure of the driver of a machine powered garden vehicle is measured, the results are greatly influenced by a number of parameters, the most important of which are the operating conditions of the machine (operator, grip place and force etc.). The important parameters are: operating conditions, mounting of the transducer, mounting method of the transducer and, grip force of the driver. The draft proposal was amended several times and its applicability was tested in the autumn 1986. In the Round Robin Test a grouted mill Norlett 4000 was measured in the Nordic countries by using an adapter of an acceleration transducer, which was built up by Occupational Safety Engineering Laboratory. The measurements were performed once in Norway, Denmark and Sweden and twice in Finland. The weighted vibration level was measured as a function of the speed of rotation. The vibration levels varied between 115...130 dB. In the travelling direction the most significant deviation in the measuring results was 6,0 dB at the speed of rotation 3000 1/min, in the side direction 4,0 dB at 2900 1/min and in the vertical direction 4,4 dB at 2700 1/min. Although a large number of uncontrolled parameters is associated with the measuring situation, the results strongly indicate that a reproducibility better that +5 dB can normally be expected.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages52
ISBN (Print)951-38-3632-0
Publication statusPublished - 1990
MoE publication typeNot Eligible

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tiedotteita
Number1081
ISSN0358-5085

Fingerprint

transducers
vehicles
mounting
vibration
adapters
Denmark
draft
Finland
autumn
Norway
Sweden
proposals
safety
engineering
deviation
operators

Keywords

  • vibrations
  • exposure
  • measuring methods
  • drivers of machines
  • agricultural machinery

Cite this

Liljeroos, A. (1990). Measuring method of driver's vibration exposure for machine powered garden vehicles. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tiedotteita, No. 1081
Liljeroos, Aulis. / Measuring method of driver's vibration exposure for machine powered garden vehicles. Espoo : VTT Technical Research Centre of Finland, 1990. 52 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1081).
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Liljeroos, A 1990, Measuring method of driver's vibration exposure for machine powered garden vehicles. Valtion teknillinen tutkimuskeskus. Tiedotteita, no. 1081, VTT Technical Research Centre of Finland, Espoo.

Measuring method of driver's vibration exposure for machine powered garden vehicles. / Liljeroos, Aulis.

Espoo : VTT Technical Research Centre of Finland, 1990. 52 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1081).

Research output: Book/ReportReport

TY - BOOK

T1 - Measuring method of driver's vibration exposure for machine powered garden vehicles

AU - Liljeroos, Aulis

PY - 1990

Y1 - 1990

N2 - When the vibration exposure of the driver of a machine powered garden vehicle is measured, the results are greatly influenced by a number of parameters, the most important of which are the operating conditions of the machine (operator, grip place and force etc.). The important parameters are: operating conditions, mounting of the transducer, mounting method of the transducer and, grip force of the driver. The draft proposal was amended several times and its applicability was tested in the autumn 1986. In the Round Robin Test a grouted mill Norlett 4000 was measured in the Nordic countries by using an adapter of an acceleration transducer, which was built up by Occupational Safety Engineering Laboratory. The measurements were performed once in Norway, Denmark and Sweden and twice in Finland. The weighted vibration level was measured as a function of the speed of rotation. The vibration levels varied between 115...130 dB. In the travelling direction the most significant deviation in the measuring results was 6,0 dB at the speed of rotation 3000 1/min, in the side direction 4,0 dB at 2900 1/min and in the vertical direction 4,4 dB at 2700 1/min. Although a large number of uncontrolled parameters is associated with the measuring situation, the results strongly indicate that a reproducibility better that +5 dB can normally be expected.

AB - When the vibration exposure of the driver of a machine powered garden vehicle is measured, the results are greatly influenced by a number of parameters, the most important of which are the operating conditions of the machine (operator, grip place and force etc.). The important parameters are: operating conditions, mounting of the transducer, mounting method of the transducer and, grip force of the driver. The draft proposal was amended several times and its applicability was tested in the autumn 1986. In the Round Robin Test a grouted mill Norlett 4000 was measured in the Nordic countries by using an adapter of an acceleration transducer, which was built up by Occupational Safety Engineering Laboratory. The measurements were performed once in Norway, Denmark and Sweden and twice in Finland. The weighted vibration level was measured as a function of the speed of rotation. The vibration levels varied between 115...130 dB. In the travelling direction the most significant deviation in the measuring results was 6,0 dB at the speed of rotation 3000 1/min, in the side direction 4,0 dB at 2900 1/min and in the vertical direction 4,4 dB at 2700 1/min. Although a large number of uncontrolled parameters is associated with the measuring situation, the results strongly indicate that a reproducibility better that +5 dB can normally be expected.

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KW - exposure

KW - measuring methods

KW - drivers of machines

KW - agricultural machinery

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BT - Measuring method of driver's vibration exposure for machine powered garden vehicles

PB - VTT Technical Research Centre of Finland

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Liljeroos A. Measuring method of driver's vibration exposure for machine powered garden vehicles. Espoo: VTT Technical Research Centre of Finland, 1990. 52 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1081).