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Method for measuring wear on boot outsoles using a 3D laser scanner.

Ashley E Whitson1, Lydia M Kocher1, Jonisha Pollard1

  • 1National Institute for Occupational Safety and Health - Pittsburgh Research Laboratory, Pittsburgh, PA, USA.

Footwear Science
|April 9, 2019
PubMed
Summary

A new 3D scanning method accurately quantifies boot outsole wear in mining, addressing the lack of methods to determine when footwear loses slip resistance. This efficient technique improves safety by monitoring critical safety equipment. Keywords: mining safety, slip resistance, footwear wear, 3D scanning.

Keywords:
3D scannerboot treadmetrologyminingslipstread wearwear pattern

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Area of Science:

  • Occupational Safety and Health
  • Mechanical Engineering
  • Materials Science

Background:

  • Slips and falls are a major cause of non-fatal injuries in the mining industry, with footwear outsole condition being critical for slip resistance.
  • Existing methods for assessing outsole wear are inadequate, lacking a defined threshold for when slip protection is compromised and often being time-consuming.
  • Quantifying outsole wear traditionally involves tedious measurements of specific features.

Purpose of the Study:

  • To introduce and validate a novel method for quantifying boot outsole wear using 3D scanning technology.
  • To establish a more efficient and flexible approach for monitoring footwear condition and ensuring adequate slip protection in mining environments.
  • To develop a method that accounts for boot deformation during wear, improving measurement accuracy.

Main Methods:

  • Utilized a handheld 3D scanner to capture boot outsole geometry.
  • Developed computational models to measure key outsole features from 3D scans.
  • Incorporated algorithms to compensate for boot bending and other wear-related transformations.
  • Compared measurements with traditional handheld calliper methods.

Main Results:

  • The 3D scanning method provides a quick and flexible way to collect data on boot outsole wear.
  • The method accurately quantifies outsole features, accounting for boot deformation.
  • Measurements obtained via 3D scanning showed no statistically significant differences compared to traditional calliper measurements.
  • The new method is more efficient for repeated measurements over time.

Conclusions:

  • A novel 3D scanning method offers an efficient and accurate solution for quantifying boot outsole wear in the mining industry.
  • This technology can help determine when footwear no longer provides adequate slip protection, enhancing worker safety.
  • The method's flexibility and accuracy make it a valuable tool for proactive maintenance and safety management of mining footwear.