HUMAN PERFORMANCE AND TRANSMISSIBILITY UNDER SINUSOIDAL AND MIXED VERTICAL VIBRATION

Six subjects performed a four-limb coordination task on a shaker table driven by both single sinusoidal frequencies of 2.5 hz and 5.0 hz, as well as by an electronic mixture of 2.5 hz and 5.0 hz. Vibration acceleration was held constant at 0.69 ms-2 (0.07 gz) rms, i.e., a level below the international standard 'fatigue-decreased proficiency' boundary for 2 1/2 h vertical vibration exposures. Although vibration transmission through the body was equally as strong for the mixture comprised of only a 50% 5.0 hz component as for the pure 5.0 hz sinusoid, performance data indicated greatest overall impairment of response speed and greatest 'fatigue-decreased proficiency' under exposure to the vibration mixture. The vibration 'crest factor' is offered as a possible explanation of the results which question a basic assumption of ISO 2631-1974 that sinusoidal vibration data are directly generalisable to more realistic environmental exposures. /Author/TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00140139
• Corporate Authors:

  Taylor & Francis

  4 Park Square, Milton Park
  Abingdon,   United Kingdom  OX14 4RN
• Authors:
  • COHEN, H H
  • Wassermaw, D E
  • Hornung, R W
• Publication Date: 1977-5

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 207-216
• Serial:
  • Ergonomics
  • Volume: 20
  • Issue Number: N3
  • Publisher: Taylor & Francis
  • ISSN: 0014-0139
  • EISSN: 1366-5847
  • Serial URL: http://www.tandfonline.com/loi/terg20

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Coordination; Driver performance; Economic efficiency; Fatigue (Physiological condition); Frequency (Electromagnetism); Human beings; Human factors; Motor reactions; Performance; Simulation; Sine curves; Tests; Tolerance (Physiology); Travelers; Vibration
• Uncontrolled Terms: Efficiency
• ITRD Terms: 5405: Acceleration; 5911: Efficiency; 2222: Fatigue (human); 6997: Frequency; 2051: Human tolerance; 1787: Man; 2247: Reaction (human); 2205: Skill (road user); 6255: Test; 5558: Vibration
• Subject Areas: Economics; Highways; Safety and Human Factors; Society; Vehicles and Equipment; I92: Vehicle Comfort;

Filing Info

• Accession Number: 00164280
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Mar 7 1978 12:00AM