Development of thumb endurance curves applicable for deadman switches in sandblasting machines.

Details

• Personal Author:
  Krake, Ann M. ; Oztas U ; Sengupta AK
• Description:
  Thumb operated deadman switches used in sandblasting machines are designed to prevent serious bodily injury from unintentional discharge of high velocity sand. The force required to hold down the switch is significant, causing fatigue and pain to set in very quickly in operator's thumb. The objective of this study was to determine the thumb force capacity and muscle fatigue curves for thumb flexion, applicable for design of these devices. Maximum thumb pressing force (MTPF) and endurance times (ET) for holding down at force levels of 10, 20, 40, and 60% of MTPF were measured from 10 male and 10 female participants in a laboratory experiment. The best fit curves of ET as a function of %MTPF were modeled with R2 > 95%. These models should be used in matching the worker strength capacity to the thumb force requirements in deadman switch design to improve safety standards in sandblasting. [Description provided by NIOSH]
• Subjects:
  Ergonomics Musculoskeletal System Occupational Health Safety
• Keywords:
  Author Keywords: Thumb Pressing; Muscle Fatigue; Endurance Time; Deadman Switch; Sandblasting Sand Blasting; Equipment Design; Hand Injuries; Hand Tools; Muscle Function; Machine Safety; Equipment Operation; Ergonomics;
• ISBN:
  9783030746100
• ISSN:
  2367-3370
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  New Jersey ; New York ; OSHA Region 2
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  190-195
• Volume:
  222
• NIOSHTIC Number:
  nn:20065798
• Citation:
  Proceedings of the 21st Congress of the International Ergonomics Association (IEA 2021), June 13-18, 2021, virtual event. Volume IV: healthcare and healthy work. Lecture Notes in Networks and Systems, volume 222. Black NL, Neumann WP, Noy I eds. Cham, Switzerland: Springer, 2021 May; 222:190-195
• Contact Point Address:
  Arijit K. Sengupta, New Jersey Institute of Technology, Newark, NJ, 07102, USA
• Email:
  sengupta@njit.edu
• Editor(s):
  Black NL; Neumann WP; Noy I
• Federal Fiscal Year:
  2021
• Performing Organization:
  Mount Sinai School of Medicine
• Peer Reviewed:
  False
• Start Date:
  20050701
• Source Full Name:
  Proceedings of the 21st Congress of the International Ergonomics Association (IEA 2021), June 13-18, 2021, virtual event. Volume IV: healthcare and healthy work. Lecture Notes in Networks and Systems, volume 222
• End Date:
  20270630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:22deadae01d2107e806262c412c964ab3e505378de33a584efd7416e93dfcb008cc00e3085979efe3e6d2afa0e863fb8b5e934051719fe25bc6432957a0c2154
• Download URL:
  https://stacks.cdc.gov/view/cdc/248860/cdc_248860_DS1.pdf
• File Type:
  [PDF - 1.00 MB ]