Sound power ranking of three circular saws with 12 saw blades, and a blade stiffener while considering feed rate and feed force

Details

• Personal Author:
  Zechmann EL
• Description:
  Permanent hearing loss and tinnitus are common among construction workers. Saws are thought to be a significant contributor to worker noise over-exposure in the woodworking industry. Many saw blades claim to have low noise and vibration; the literature claims that noise reductions of 5 to 10 dB are commonplace. To better understand the currently available noise reduction options for saw blades, sound power measurements were made in the loaded and unloaded conditions for three circular saws with 12 saw blades with and without a blade stiffener. In the loaded condition, the material cut was one-inch thick rough-cut oak. Oak was used as a hardwood. During sawing, the feed force and feed rate were measured. The sound power (watts) was divided by the feed rate (inches/second) to calculate the average sound power per unit of material cut. This feed-rate-adjusted sound power level was used to compare the performance of blades and saws. It was found that the difference in feed rate adjusted sound power level between the highest and lowest saw setups was approximately 10 dBA. The saw and blade combination with the lowest feed rate adjusted sound power used a DC motor, a thin kerf blade, and a blade stiffener. [Description provided by NIOSH]
• Subjects:
  Construction Industry Construction Materials Environmental Monitoring Noise Noise, Occupational Occupational Health Power Plants Safety Wood
• Keywords:
  Construction Equipment Construction Materials Cutting Tools Equipment Testing Exposure-assessment Exposure-levels Machine-tools Measurement-equipment Noise-levels Noise-measurement Noise Control Noise Sources Performance Tests Power-generation Power Tools Pressure-testing Sound Sound Attenuation Woodworking Woodworking Equipment

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• ISSN:
  0736-2935
• Publisher:
  The Institute of Noise Control Engineering of the USA (INCE/USA)
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Ohio ; OSHA Region 1 ; OSHA Region 5 ; Rhode Island
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  78-89
• NIOSHTIC Number:
  nn:20048861
• Citation:
  NOISE-CON 2016. The 31st Conference of the Institute of Noise Control Engineering, June 13-15, 2016, Providence, Rhode Island. Washington, DC: The Institute of Noise Control Engineering of the USA, 2016 Jun; :78-89
• Contact Point Address:
  Edward Zechmann, National Institute for Occupational Safety and Health, Robert A. Taft Building, 1090 Tusculum Avenue, C-27, Cincinnati, OH 45226
• Email:
  EZechmann@cdc.gov
• Federal Fiscal Year:
  2016
• NORA Priority Area:
  Construction ; Manufacturing
• Peer Reviewed:
  False
• Source Full Name:
  NOISE-CON 2016. The 31st Conference of the Institute of Noise Control Engineering, June 13-15, 2016, Providence, Rhode Island
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:53a9947b4fcb6594d4497ecd872740eeace95c1f02f8637b3e24c1fed81ae1f17ed17e4b47facd6d8f80e85544545b5ffb5bf11f839db3437af3b8ffeafacb4e
• Download URL:
  https://stacks.cdc.gov/view/cdc/203485/cdc_203485_DS1.pdf
• File Type:
  [PDF - 759.68 KB ]