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Mining Publication: Ergonomic Seat With Viscoelastic Foam Reduces Shock on Underground Mobile Equipment
Keywords: Shock Shuttle cars Whole-body vibration
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: June 1997
Authors: AG Mayton, S Gallagher, R Merkel
Conference Paper - June 1997
Download PDF Document (0.16 MB)
NIOSHTIC2 Number: 20023381
In: B. Das; W. Karwoski, eds., Advances in Occupational Ergonomics and Safety II, IOS Press and Ohmsha, 1997 Jun; :177-180
Operators of underground mobile equipment, particularly shuttle cars, are often exposed to significant levels of whole-body vibration (WBV) and shock. The Human Factors group at the NIOSH-Pittsburgh Research Center has investigated the use of viscoelastic foam to reduce shock for the equipment operator and improve seats on mine shuttle cars. In-mine data were recorded on a JOY 21 SC shuttle car for the original seat and an ergonomic version with viscoelastic foam. A review of the data shows improved isolation across the driver/seat pad interface. For the full-load case, the ergonomic seat decreased transmissibility and isolated the shuttle car operator down to 15 Hz. Additional testing of the foam materials with the development and use of a lumped-parameter analytical model showed different composites of the foam materials can reduce the isolation frequency to below 5 Hz. This paper describes the underground mine trials and the testing done to evaluate properties of the viscoelastic foams. The paper also discusses the development of an analytical model using the data from underground trials and the foam testing.
Image of publication Ergonomic Seat With Viscoelastic Foam Reduces Shock on Underground Mobile EquipmentConference Paper - June 1997
Download PDF Document (0.16 MB)
NIOSHTIC2 Number: 20023381
In: B. Das; W. Karwoski, eds., Advances in Occupational Ergonomics and Safety II, IOS Press and Ohmsha, 1997 Jun; :177-180
See Also
Acceleration and GPS Data Monitor Truck-Haulage Jolts
Comfort Evaluation for Mine Shuttle Car Seat Designs
Improved Seat Reduces Jarring/Jolting for Operators of Low-Coal Shuttle Cars
Investigation of Ampacity Derating Factors for Shuttle Cars Using Fiber Optics Technology
Laboratory Investigation of Seat Suspension Design Performance during Vibration Testing
Physiological Responses and Subjective Discomfort of Simulated Whole-Body Vibration From a Mobile Underground Mining Machine
Shock Reduction for Low-Coal Shuttle Car Operators Using Viscoelastic Seating Foam
Systematic Comparison of Different Seats on Shuttle Cars Used in Underground Coal Mines
Whole-Body Vibration and Postural Stress among Operators of Construction Equipment: A Literature Review
Whole-Body Vibration Exposure Comparison of Seat Designs for Low- and Mid-Seam Shuttle Cars in Underground Coal Mines
Page last reviewed: November 17, 2015
Page last updated: November 17, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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