Effect of test conditions on COF measurements on ice surfaces using SATRA STM603 whole shoe tester

Type de document

Articles dans des actes de congrès

Année

2021

Langue

Anglais

Directeurs de la publication

Nancy L. Black, W. Patrick Neumann et Ian Noy

Titre des actes

Proceedings of the 21st Congress of the International Ergonomics Association (IEA 2021): Volume II: Inclusive design

Première page

644

Dernière page

651

Maison d’édition

Springer

Résumé

The SATRA STM603 whole shoe tester combined with a refrigerated ice tray to create ice surfaces can be used to measure the coefficient of friction (COF) between footwear and ice. However, performing tests on ice surfaces can be challenging. The objective of this study was to understand better the effect of ice surfaces (frosted, dry), consecutive runs (1 to 10), and different laboratories (L1, L2) on the COF measurements.

The first series of tests was done with two boots on two ice conditions, frosted and smooth dry, in one laboratory. The second series was done with three boots on dry ice, in two laboratories, and the ice temperature was monitored using thermistors.

The results of the first series showed that the COFs on the frosted ice declined with the runs until reaching a plateau that converged with the COFs on dry ice. Higher variability was observed with the frosted ice compared to dry ice. The results of the second series showed a slight decrease of the COFs over consecutive runs on dry ice, and a significant difference between labs, associated with the ice temperature and the polish of ice by consecutive runs.

This study provided a better understanding of the use and limitations of the SATRA 603ICE ice tray for measuring footwear slip resistance on ice. The method should be further developed, especially the method of controlling the properties of the ice surface, to better simulate ice surfaces in the real-world and to improve the reproducibility of COF measurements.

Mots-clés

Chute de plain-pied, Fall on the level, Glissement, Sliding, Glace, Ice, Essai du matériel, Equipment testing

Numéro de projet IRSST

2015-0078

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