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Evaluation of a Force Plate System for Measuring Center of Pressure in Railroad Ballast



Details

  • Personal Author:
  • Description:
    Traditional biomechanical analyses have focused primarily on the human gait across hard, flat surfaces and provide little information about human locomotion as a function of work environment or terrain. The purpose of this study was evaluation of a force plate system for measure of center of pressure (COP) in railroad ballast by comparing its accuracy across three surface conditions (hard surface, mainline ballast and walking ballast) with two configurations (level and 7 deg cross-slope). Custom walkways and an isolation fixture were developed to rigidly attach a force plate beneath ballast surfaces to collect the COP. The difference in COP location (deltaCOPx, y, z) between the force plate system and a calibration system (motion capture derived) were compared using repeated-measures analysis of variance. Results indicate that the effects of surface condition and configuration were not significant for delltaCOPx, y, z and no differences were found among the three surface conditions during pairwise comparison, though deltaCOPx, y, z were different between the center and corners of the force plate in ballasts for both level and cross-slope configurations. The system presented in this study demonstrates the feasibility of measuring the COP by using an isolation-fixture force plate to expand the scope of biomechanical studies on ballast surfaces that are level or cross-slope. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0966-6362
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    5 pdf pages
  • Volume:
    46
  • NIOSHTIC Number:
    nn:20067336
  • Citation:
    Gait Posture 2016 May; 46:179-183
  • Contact Point Address:
    Andrew Merryweather, Department of Mechanical Engineering, University of Utah, 1495 E. 100 S., Salt Lake City, UT 84112, USA
  • Email:
    a.merryweather@utah.edu
  • Federal Fiscal Year:
    2016
  • Performing Organization:
    University of Utah
  • Peer Reviewed:
    True
  • Start Date:
    20050701
  • Source Full Name:
    Gait and Posture
  • End Date:
    20280630
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:5531b14c436b5fda4e10f365822f3cbeca514e3c6df9a144e23d91eb317f5c0a0186798f02e4a99106ae8a8ef301c3bc7d4c6a52668562c4ce6628ec88c833dc
  • Download URL:
  • File Type:
    Filetype[PDF - 623.46 KB ]
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