Measuring the vibration transmissibility of gloves using different excitation conditions

Details

• Personal Author:
  Asaki T ; Peterson, D. R.
• Description:
  The current approach to evaluating vibration-reducing (VR) gloves for vibration attenuation characteristics involves the strict following of the protocols defined in ISO 108191, which seeks to test gloves according to a criteria of total transmissibility values in the M (25 - 200 Hz, T(M) ≤ 0.9) and H (200 - 1,250 Hz, T(H) ≤ 0.6) spectrums. Even when following the protocols of the standard, previous studies have shown that glove evaluation results can vary between testing laboratories and that results often conflict with the VR claims made by glove manufacturers. Variations in evaluation outcomes could result from testing factors, such as palm adapter misalignment, improper push/pull and grip force loadings, and/or an inadequate feedback control system for the electro-dynamic exciter; however, the experimental control of these factors are fairly simple and variations can be easily minimized. For the case of vibration excitation, if the frequency response of the glove is assumed to be governed by the Linear Time-Invariant (LTI) System theory, then the transmissibility results of the ISO test should hypothetically be the same as the results obtained under any excitation condition. In order to test this hypothesis, VR glove transmissibility assessments were conducted using three different Power Spectrum Density Spectrums (PSDS): 1) the ISO 10819 PSDS, 2) a flat PSDS, and 3) a PSDS obtained from actual power tool use in the field. In addition to the palm assessment defined in the standard, transmissibility was also simultaneously measured at the finger using a novel finger adapter, especially since recent findings demonstrated inhomogeneity between finger and palm transmissibilities. [Description provided by NIOSH]
• Subjects:
  Environmental Monitoring Laboratories Manufacturing And Industrial Facilities Noise Noise, Occupational Occupational Health Personal Protective Equipment Protective Clothing Safety Vibration
• Keywords:
  Analytical-instruments Biodynamics Control-technology Equipment-reliability Exposure-assessment Gloves Hand-protection Laboratory-testing Materials-testing Noise-levels Noise-transmission Noise-waves Performance-capability Personal-protective-equipment Physiological-measurements Protective-clothing Sound-attenuation Standards Testing-equipment Vibration-control Vibration-exposure Vibration-pickups Vibration-suppressors

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• Publisher:
  University of Guelph
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Abstract or Summary
• Place as Subject:
  Connecticut ; OSHA Region 1
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  35-36
• NIOSHTIC Number:
  nn:20045780
• Citation:
  Human vibration - from theory to industrial and clinical applications, proceedings of the fifth American Conference on Human Vibration, June 10-13, 2014, Guelph, Ontario, Canada. Oliver M, ed. Guelph, Ontario, Canada: University of Guelph, 2014 Jun; :35-36
• Editor(s):
  Oliver M
• Federal Fiscal Year:
  2014
• NORA Priority Area:
  Construction ; Manufacturing
• Performing Organization:
  University of Connecticut School of Medicine and Dentistry
• Peer Reviewed:
  False
• Start Date:
  20090901
• Source Full Name:
  Human vibration - from theory to industrial and clinical applications, proceedings of the fifth American Conference on Human Vibration, June 10-13, 2014, Guelph, Ontario, Canada
• End Date:
  20130831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:258d1cac3e3203d311aec836459c05e5c23eba9dd5cd912070ae70a4f93f138571060285bb593ee70e00a02378ba267779c1152659a3dc0bb7708b22d3d494db
• Download URL:
  https://stacks.cdc.gov/view/cdc/201068/cdc_201068_DS1.pdf
• File Type:
  [PDF - 339.94 KB ]