An Evaluation of the Standardized Chipping Hammer Test Specified in ISO 8662–2

Details

• Personal Author:
  Dong, Ren G. ; McDowell, Thomas W. ; Schopper AW ; Warren C ; Welcome DE
• Description:
  Prolonged exposure to severe chipping hammer vibration may cause hand-arm vibration syndrome. A reliable test method is required to select appropriate tools and assist in the development of better chipping hammers. In the present study, the ISO standardized test method (ISO 8662-2, 1992) was examined through an investigation of the vibration characteristics of chipping hammers operating on the energy absorber specified in the standard. The energy absorber and test setup were designed and constructed based on those specified in the standard. The experiment employed six subjects and used two pneumatic chipping hammers and three different feed forces (50, 100 and 200 N). The subject posture was the same as that specified in the standard. The vibration emission at the tool dominant frequency (or air blow rate) generally declined with an increase in feed force, thus decreasing the frequency-weighted accelerations. The increase in feed force, however, resulted in an increase in the unweighted vibration emission at high frequencies. The chipping hammer vibration emission operating on the energy absorber at the high feed force (200 N) was inconsistent. The measurement method has a good repeatability except at a high feed force. The feed force has a significant effect on the vibration emission. The single feed force specified in the standard may not be sufficient to test the tool behaviors. Multiple levels of feed force should be used for the chipping hammer test. Doing so may provide a more appropriate basis for tool screening. [Description provided by NIOSH]
• Subjects:
  Musculoskeletal System Occupational Health Protective Clothing Safety Vibration
• Keywords:
  Arm-injuries Author Keywords: Chipping Hammer Hand-arm Vibration Hand-protection Hand-tools Hand-transmitted Vibration Power-tools Testing-equipment Tools Tool Vibration Measurement Vibration-effects Vibration-exposure

  More +
• ISSN:
  0003-4878
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  39-49
• Volume:
  48
• Issue:
  1
• NIOSHTIC Number:
  nn:20024341
• Citation:
  Ann Occup Hyg 2004 Jan; 48(1):39-49
• Contact Point Address:
  R. G. Dong, Engineering & Control Technology Branch, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505, USA
• Email:
  rkd6@cdc.gov
• Federal Fiscal Year:
  2004
• NORA Priority Area:
  Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
• Peer Reviewed:
  True
• Source Full Name:
  Annals of Occupational Hygiene
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:1abe8992f1c1f19ee6c895d8fa3efbb79b2e7aa7fe8e87e1fa4ed03696d52480367c7b0f9a9f9889953feba0658783999f38a5275cfd912a9c4d09785725eda1
• Download URL:
  https://stacks.cdc.gov/view/cdc/196191/cdc_196191_DS1.pdf
• File Type:
  [PDF - 166.10 KB ]