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International Standard 2631 and British Standard 6841: a comparison of two guides to the measurement and evaluation of human exposure to whole-body vibration and repeated shock
546
HUMAN
RESPONSE
TO VIBRATION
P. Donati, P. Mistrot, J. P. Galmiche, F. Broyde, D. Lescail, D. Audoin and D. Florentin, 1988. Vibration discomfort experienced by a driver when a lorry runs over obstacles (preliminary experiment). (15 pages, 5 figures, 4 tables, 10 references) (in English) Authors’ Summary. Nine artificial obstacles with different shapes and dimensions were placed at equal distances on a test track with a good quality surface. Six lorry drivers were asked to assess the discomfort of the transient vibration when the lorry ran over each obstacle. Vibration measurements were made on the seat pan (fore-and-aft, lateral and vertical axes) and the backrest (fore-and-aft and lateral axes) of the driver’s seat. The six drivers produced rankings of the transient vibration discomfort consistent with the objective measurements of acceleration. Despite the variety of obstacles used, the root-mean-square and the root-mean-quad values of measured acceleration gave similar rankings. Topics: Subjective Assessment (rating); Complex Vibration (shocks); Vibration Measurement ( roud vehicles). M. J. Griffin 1988. International Standard 2631 and British Standard 6841: a comparison of two guides to the measurement and evaluation of human exposure to whole-body vibration and repeated shock. (18 pages, 2 figures, 7 tables, 12 references) (in English) Author’s Abstract. International Standard 2631 was originally published in 1974 and was later amended and supplemented by addenda. A revision of the standard has been in preparation for almost 10 years. British Standard 6841 was published in 1987 and is similar to the current draft revision of the International Standard. This paper compares the structure of the two standards and presents tabular comparisons of the guidance given concerning health, activity disturbance, comfort, vibration perception and motion sickness. It is shown that the guidance in BS 6841 is less speculative and more simple to apply, yet significantly more comprehensive than the guidance IS0 2631. Topics: Standardization. Other papers presented at the meeting were as follows: R. Gaertner, F. Bermond and J. Dimnet. Predicting the response of the hand-arm system in a vibration environment. S. Kihlberg, M. Friberg, M. Hagberg, J.-E. Hansson, L. Jorulf and C.-E. Ostergren. Vibration levels and health problems from work with nut runners. B. 0. Wikstrijm. Work-load, vibration- and noise-exposure for lumberjacks. Y. Musson, W. A. M. Hoefnagels, M. Bakkeren, D. van Drimmelen, and A. Burdorf. Solution-directed workplace analysis: removing mortar from brick walls. C. M. Nelson. Investigation of the relationship between vibration exposure and the latent period for vibration-induced white finger. M. Scheffer, and H. Dupuis. Effects of combined hand-arm vibration and cold on skin temperature. R. A. Hayward. Elevated vibrotactile thresholds in primary Raynaud’s disease: a comparison with VWF. R. Lundstrom. Digital tactilogram as a diagnostic tool for testing sensory changes in vibration exposed workers (a field study). G. Gemne and I. Pyykkii. Finger blood flow and pressure in chain-sawyers with a past history of vibration-induced Raynaud’s phenomenon. F. X. Ley. Articular degeneration: anatomo-pathological and anatomo-radiological modifications. C. Corbridge. Subjective assessments of the lateral support provided by British Rail 1st class Inter-City seats under conditions of lateral vibration.
HUMAN
RESPONSE
TO VIBRATION
541
A. J. Messenger. The effects of modifications to a helicopter seat on the transmission of vertical vibration through seat and occupant. G. S. Paddan. Transmission of horizontal vibration from the floor to the head in standing subjects. P. LiCbaert, P. Quandieu, L. Pellieux, B. Piedecocq, A. Guillaume-Singland and C. C. Tran. Statistical treatment of the characteristics of a joint exposed to vibration: experimental study. E. N. Corlett and R. Bonney. Changes of stature under vibration when in the driving position, J. Smeathers, P. S. Helliwell and V. Wright. Shock adsorption by the spinal column in normals and in ankylosing spondylitis. P. Voss and C. Krogh-Lund. Vibration exposure and lumbar back muscle activity of seated, driving workers (Part I). J. C. Angue. Modelization of the process of treating visual information and decisionmaking by a pilot perturbed by very low frequency vibration. A. K. Davies. Spatial filtering and image vibration: Roman numerals reassessed. J.-P. Roll and R. Roll. From eye to foot: a proprioceptive chain involved in postural control. E. Ribot, J. P. Vedel and J.-P. Roll. Sensitivity to vibration of somatic human mechanoreceptors and alteration of sensory messages during vibration exposure: a microneurographic analysis. R. Guieu, M.-F. Tardy-Gervet and J. P. Roll. Antalgic effects of mechanical vibration associated with transcutaneous electrical stimulation. H. Splittgerber. Whole-body vibration perception thresholds for some complex vibrations. B. Splittgerber and E. Gros. Subjective perception and evaluation of whole-body vibration in working surroundings: a sociological study. M. Haverkamp. Laboratory research on the acute effects of vertical shock-type whole-body vibration on man in sitting posture. N. Monsees, R. T. Whyte, J. A. Lines and R. M. Stayner. Relationship between subjective assessment and objective measurements of tractor ride vibration (r.m.s. and r.m.q.). L. M. Cleon and P. Caille. Application of IS0 Standard 2631 to railway vehicles. Comfort in seated position. (Abstract of proceedings of the ORE B153 committee). G. Rasmussen and P. Rasmussen. Measurement of vibration intensity. I. R. Price and P. M. Pitts. The development of a specification for a simple method to determine hand-transmitted vibration exposure. Copies of the proceedings of the meeting may be obtained from Dr P. M. Donati, I.N.R.S., Avenue de Bourgogne, 54500 Vandoeuvre, France. Nore. Copies of all papers in this section will be found in the Human Response to Vibration Literature Collection at the Institute of Sound and Vibration Research, The University of Southampton. The papers may be used by persons visiting the Institute. Contributions to the Literature Collection are requested. They should be sent to Dr M. J. Gr@n, Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Southampton SO9 5 NH, England.
HUMAN
RESPONSE
TO VIBRATION
P. Donati, P. Mistrot, J. P. Galmiche, F. Broyde, D. Lescail, D. Audoin and D. Florentin, 1988. Vibration discomfort experienced by a driver when a lorry runs over obstacles (preliminary experiment). (15 pages, 5 figures, 4 tables, 10 references) (in English) Authors’ Summary. Nine artificial obstacles with different shapes and dimensions were placed at equal distances on a test track with a good quality surface. Six lorry drivers were asked to assess the discomfort of the transient vibration when the lorry ran over each obstacle. Vibration measurements were made on the seat pan (fore-and-aft, lateral and vertical axes) and the backrest (fore-and-aft and lateral axes) of the driver’s seat. The six drivers produced rankings of the transient vibration discomfort consistent with the objective measurements of acceleration. Despite the variety of obstacles used, the root-mean-square and the root-mean-quad values of measured acceleration gave similar rankings. Topics: Subjective Assessment (rating); Complex Vibration (shocks); Vibration Measurement ( roud vehicles). M. J. Griffin 1988. International Standard 2631 and British Standard 6841: a comparison of two guides to the measurement and evaluation of human exposure to whole-body vibration and repeated shock. (18 pages, 2 figures, 7 tables, 12 references) (in English) Author’s Abstract. International Standard 2631 was originally published in 1974 and was later amended and supplemented by addenda. A revision of the standard has been in preparation for almost 10 years. British Standard 6841 was published in 1987 and is similar to the current draft revision of the International Standard. This paper compares the structure of the two standards and presents tabular comparisons of the guidance given concerning health, activity disturbance, comfort, vibration perception and motion sickness. It is shown that the guidance in BS 6841 is less speculative and more simple to apply, yet significantly more comprehensive than the guidance IS0 2631. Topics: Standardization. Other papers presented at the meeting were as follows: R. Gaertner, F. Bermond and J. Dimnet. Predicting the response of the hand-arm system in a vibration environment. S. Kihlberg, M. Friberg, M. Hagberg, J.-E. Hansson, L. Jorulf and C.-E. Ostergren. Vibration levels and health problems from work with nut runners. B. 0. Wikstrijm. Work-load, vibration- and noise-exposure for lumberjacks. Y. Musson, W. A. M. Hoefnagels, M. Bakkeren, D. van Drimmelen, and A. Burdorf. Solution-directed workplace analysis: removing mortar from brick walls. C. M. Nelson. Investigation of the relationship between vibration exposure and the latent period for vibration-induced white finger. M. Scheffer, and H. Dupuis. Effects of combined hand-arm vibration and cold on skin temperature. R. A. Hayward. Elevated vibrotactile thresholds in primary Raynaud’s disease: a comparison with VWF. R. Lundstrom. Digital tactilogram as a diagnostic tool for testing sensory changes in vibration exposed workers (a field study). G. Gemne and I. Pyykkii. Finger blood flow and pressure in chain-sawyers with a past history of vibration-induced Raynaud’s phenomenon. F. X. Ley. Articular degeneration: anatomo-pathological and anatomo-radiological modifications. C. Corbridge. Subjective assessments of the lateral support provided by British Rail 1st class Inter-City seats under conditions of lateral vibration.
HUMAN
RESPONSE
TO VIBRATION
541
A. J. Messenger. The effects of modifications to a helicopter seat on the transmission of vertical vibration through seat and occupant. G. S. Paddan. Transmission of horizontal vibration from the floor to the head in standing subjects. P. LiCbaert, P. Quandieu, L. Pellieux, B. Piedecocq, A. Guillaume-Singland and C. C. Tran. Statistical treatment of the characteristics of a joint exposed to vibration: experimental study. E. N. Corlett and R. Bonney. Changes of stature under vibration when in the driving position, J. Smeathers, P. S. Helliwell and V. Wright. Shock adsorption by the spinal column in normals and in ankylosing spondylitis. P. Voss and C. Krogh-Lund. Vibration exposure and lumbar back muscle activity of seated, driving workers (Part I). J. C. Angue. Modelization of the process of treating visual information and decisionmaking by a pilot perturbed by very low frequency vibration. A. K. Davies. Spatial filtering and image vibration: Roman numerals reassessed. J.-P. Roll and R. Roll. From eye to foot: a proprioceptive chain involved in postural control. E. Ribot, J. P. Vedel and J.-P. Roll. Sensitivity to vibration of somatic human mechanoreceptors and alteration of sensory messages during vibration exposure: a microneurographic analysis. R. Guieu, M.-F. Tardy-Gervet and J. P. Roll. Antalgic effects of mechanical vibration associated with transcutaneous electrical stimulation. H. Splittgerber. Whole-body vibration perception thresholds for some complex vibrations. B. Splittgerber and E. Gros. Subjective perception and evaluation of whole-body vibration in working surroundings: a sociological study. M. Haverkamp. Laboratory research on the acute effects of vertical shock-type whole-body vibration on man in sitting posture. N. Monsees, R. T. Whyte, J. A. Lines and R. M. Stayner. Relationship between subjective assessment and objective measurements of tractor ride vibration (r.m.s. and r.m.q.). L. M. Cleon and P. Caille. Application of IS0 Standard 2631 to railway vehicles. Comfort in seated position. (Abstract of proceedings of the ORE B153 committee). G. Rasmussen and P. Rasmussen. Measurement of vibration intensity. I. R. Price and P. M. Pitts. The development of a specification for a simple method to determine hand-transmitted vibration exposure. Copies of the proceedings of the meeting may be obtained from Dr P. M. Donati, I.N.R.S., Avenue de Bourgogne, 54500 Vandoeuvre, France. Nore. Copies of all papers in this section will be found in the Human Response to Vibration Literature Collection at the Institute of Sound and Vibration Research, The University of Southampton. The papers may be used by persons visiting the Institute. Contributions to the Literature Collection are requested. They should be sent to Dr M. J. Gr@n, Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Southampton SO9 5 NH, England.