Details:

Personal Author:
Gagliardi, John C. ; Utt, Walter K.
Gagliardi, John C. ; Utt, Walter K. Less -
Corporate Authors:
United States. Bureau of Mines.
Description:
"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." - NIOSHTIC-2

NIOSH no. 10003270


Subject:
[+]
Mine Haulage.
Off-road Vehicles -- Seats -- Testing.
Off-road Vehicles -- Vibration -- Testing.

Series:
Report of investigations (United States. Bureau of Mines) ; 9454
Document Type:
Report
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:df12ba5e92c7f754243fdf8d27b5eedf0eb27d62b1d2ee009e6c1cdcea0d473b
File Type:

Supporting Files

• No Additional Files

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