Second Generation Device for Measuring Daylong Vibration Exposure and Grip Force Levels During Hand-Tool Use

Details

• Personal Author:
  Brammer, A. J. ; Cherniack, Martin G. ; Knapp RH ; Peterson, D. R.
• Description:
  Millions of workers are exposed to vibration at their job, whether it is from a power tool that causes hand and arm vibration or from heavy machinery that exposes them to whole body vibrations. These vibrations are known to result in physical disorders, such as Hand-Arm Vibration Syndrome (HAVS), and can be debilitating to the point where workers can no longer do their job effectively. The symptoms reported continue to occur even when what is believed to be a low amount of vibration exposure is seen.1 Research groups have taken an interest in identifying the vibration characteristics that are most harmful and choose to record vibration information using data-logging devices. Many data-logging devices, whether they are commercial or custom-built, use the frequency weightings defined in ISO 5349-12 and full day estimations in order to assess levels of vibration exposure. Furthermore, it is not uncommon for data be lost due to pre-software filtering and short measurement durations in these devices. For example, a representative device made by Larson Davis, Model HVM 100, captures vibration signals with a frequency range from 0.4 Hz up to 1250 Hz. It allows for three acceleration sensor inputs, measuring X, Y, and Z directions of vibration and uses the A(8) exposure metric, where the amount of vibration exposure from a tool is estimated for 8 hours of use without necessarily having the subject wear the device all day. Peterson et al. developed a datalogger called the Vibration Exposure Monitor (VEM), which was used to capture full day vibration waveform metrics using a uni-axial accelerometer and a force sensitive resistor mounted on the subjects palm.3 Datalogging devices created for purposes other than vibration are not capable of measuring acceleration signals properly. This is due to the lack of one or many of the following specifications: resolution in amplitude or time domain, cyclic lifetime, number of channel inputs, and/or dynamic range. In order to fully understand the extent of vibration exposure, raw waveforms of grip force and acceleration are desired and have led to the creation of a second generation Vibration Exposure Monitor (VEM2). [Description provided by NIOSH]
• Subjects:
  Musculoskeletal System Occupational Exposure Occupational Health Safety Vibration
• Keywords:
  Hand-arm Vibration Syndrome HAVS Measurement Equipment Occupational Exposure Upper Extremities Vibration Exposure Vibration Monitors
• Publisher:
  University of Connecticut Health Center
• 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:
  119-120
• NIOSHTIC Number:
  nn:20054600
• Citation:
  Proceedings of the 4th American Conference on Human Vibration: Fostering Collaborative Academic, Clinical, and Industrial Research in Vibration Exposure and Control, June 13-15, 2012, Hartford, Connecticut. Peterson DR, Asaki T, eds. Farmington, CT: University of Connecticut Health Center, 2012 Jun; :119-120
• Editor(s):
  Peterson DR; Asaki T
• Federal Fiscal Year:
  2012
• NORA Priority Area:
  Construction ; Manufacturing
• Performing Organization:
  University of Connecticut School of Medicine and Dentistry
• Peer Reviewed:
  False
• Start Date:
  20090901
• Source Full Name:
  Proceedings of the 4th American Conference on Human Vibration: Fostering Collaborative Academic, Clinical, and Industrial Research in Vibration Exposure and Control, June 13-15, 2012, Hartford, Connecticut
• End Date:
  20130831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:4f2b5ab3e24f7c78b6bf5d7bd5ca6c53cfa035788a3c810b4636be66e9c532153cecacd499422b80915ac27808ceb99ac5a33ff93f77398b6af7fa6160a8b5d9
• Download URL:
  https://stacks.cdc.gov/view/cdc/217101/cdc_217101_DS1.pdf
• File Type:
  [PDF - 882.02 KB ]