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The National Institute for Occupational Safety and Health (NIOSH)





Mining Publication: Vibration Testing of Off-Road Vehicle Seats
Keywords: Off road vehicles Vibration damping
Original creation date: January 1993
Authors: JC Gagliardi, WK Utt
Report of Investigations - January 1993
Download PDF Document (1.49 MB)
NIOSHTIC2 Number: 10003270
U.S. Department of the Interior, Bureau of Mines, Report of Investigations 9454, 1993 Jan:1-25
The U.S. Bureau of Mines, in cooperation with Carter Mining Co., conducted vibration tests of four off-road vehicle seats. The purpose of the tests was to determine which seat provided the best vibration attenuation under laboratory conditions. Laboratory tests were constructed to simulate the mining vibrations environment within the limitations of the test equipment. The acceleration test levels and corresponding response of the seats were low compared to ISO 2631's fatigue-decreased-proficiency time limits. Two of the seats employed mechanical suspensions and two seats employed air suspensions. The seats were tested using a 22,241-N (5,000-lbf) electrodynamic shaker. Mechanical suspension seats were tested with various preload-to-mass ratios (PMR's) and cushion densities. Air suspension seats were tested with various air pressure levels and seat cushion densities. Air suspension seats provided good vibration attenuation if pressurized greater than 552 kPa (80 psi). Mechanical suspension seats' attenuation performance decreased if the PMR exceeded 9.8. Seat cushions of lower density provided less vibration damping.
Image of publication Vibration Testing of Off-Road Vehicle SeatsReport of Investigations - January 1993
Download PDF Document (1.49 MB)
NIOSHTIC2 Number: 10003270
U.S. Department of the Interior, Bureau of Mines, Report of Investigations 9454, 1993 Jan:1-25
See Also
Engineered Solutions - Dump Truck Vibrations and Impact on Operator Safety in High-Impact Shovel Loading Operations
Investigation of Simple Cost Effective Whole-Body Vibration Measure Tools: Capabilities, Vibration Measures, & Expansion
Laboratory Investigation of Seat Suspension Design Performance during Vibration Testing
Seating Design Principles
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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