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Development and validation of a novel portable slip simulator
Carita Aschan1, Mikko Hirvonen, Tarmo Mannelin
1Department of Physics, Finnish Institute of Occupational Health, Topeliuksenkatu 41 a A, FIN-00250 Helsinki, Finland. carita.aschan@ttl.fi
Applied Ergonomics
|June 23, 2005
Summary
A new portable device accurately measures pedestrian slip resistance in situ. This dynamic coefficient of friction (DCOF) meter shows high correlation with reference methods, enabling real-world slip risk assessments.
Area of Science:
- Occupational Health and Safety
- Biomechanics
- Materials Science
Background:
- Assessing pedestrian slip resistance is crucial for preventing workplace and public area accidents.
- Existing laboratory methods for measuring slip resistance can be cumbersome and not representative of real-world conditions.
Purpose of the Study:
- To develop, construct, and validate a portable device for in situ measurement of pedestrian slip resistance.
- To assess the precision and ease of use of the developed portable slipmeter.
- To compare the device's measurements with established reference methods.
Main Methods:
- Development and construction of a portable slipmeter.
- In situ validation using a force platform as a reference standard.
- Comparison of measurements with a laboratory-based slip simulator.
Main Results:
- The portable device demonstrated high precision and ease of use.
- Measurements of the dynamic coefficient of friction (DCOF) showed a strong correlation (r > 0.990, p < 0.001) with the force platform.
- DCOF values were consistent with those obtained from an established laboratory slip simulator.
Conclusions:
- Accurate in situ friction measurements with actual footwear are feasible using a portable device.
- The developed slipmeter offers a reliable tool for assessing the slipperiness of various walking surfaces.
- Future applications include evaluating slip risk in diverse environments such as workplaces and walkways.