Effect of tread design and hardness on interfacial fluid force and friction in artificially worn shoes

Walter, Paul J.; Tushak, Claire M.; Hemler, Sarah L.; Beschorner, Kurt E.

doi:10.1080/19424280.2021.1950214

Cited by 14 publications

(2 citation statements)

References 28 publications

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“…A few studies in the past have considered different types of tread designs, footwear materials, varying sole hardness, types of flooring material and contaminants. In a previous study by Walter et al [50], three different types of tread designs have three independent material with different hardness were considered. The shoes were artificially worn and slip tested on a vinyl composite tile.…”

Section: Discussionmentioning

confidence: 99%

Frictional Characteristics of Progressively Worn Footwear Outsoles on Slippery Surfaces

Gupta,

Chatterjee,

Chanda

2023

Tribol. Ind.

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Slip and fall related injuries are common in workplaces and sufficient shoe-floor friction is required to prevent such incidents. Besides the presence of slippery contaminants, shoe wearing over time is one of the key factors which may lead to significant reduction in shoe-floor friction. While footwear-based slip testing has been conducted widely across floorings and contaminants, limited studies have focused on the effect of worn shoes on slipping. In this work, twelve formal shoes from common brands were tested through modelling of their outsoles in normal and different degrees of progressively worn conditions. Mechanical slip testing was conducted to quantify the available coefficient of friction (ACOF) of the outsole models across dry and two common contaminant conditions (i.e., floor or surface cleaner, and canola oil), and on three commonly available floorings. The effect of flooring, contaminant, and worn area, on the ACOF were characterized extensively. Progressively worn outsoles were found to lead to reduction in ACOF in the range of 28-97%. Outsoles having tread channels oriented at different angles with respect to the direction of footwear motion, were found to generate higher ACOF, than ones with horizontal tread patterns. Outsoles which had larger treads but with lesser intervals (i.e., large tread surface area) showed lower ACOF values. These outsoles experienced less reduction in the ACOF in the following cycles of wear. For safety against slips, outcomes from this work are expected to provide essential information for buying or replacing the formal shoes in its new or worn condition.

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Section: Discussionmentioning

confidence: 99%

Frictional Characteristics of Progressively Worn Footwear Outsoles on Slippery Surfaces

Gupta,

Chatterjee,

Chanda

2023

Tribol. Ind.

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“…The final theme of assessing wear patterns on the sole and upper was accepted as a suitable clinical measure of the footwear in the rounds of discussion (Theme 6.1). Wear marks on footwear have been linked to a potential cause of injury [41] with the tread geometry playing a role in how a sole unit of the shoe will wear [42]. Having a clinical assessment and understanding of wear on the shoe could provide an insight on how the shoes worn function for an individual.…”

Section: Discussionmentioning

confidence: 99%

Evaluation and optimisation of a footwear assessment tool for use within a clinical environment

Ellis

Branthwaite

Chockalingam

2022

Journal of Foot and Ankle Research

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Footwear has been documented as a significant factor in the aetiology of foot pain in the general population. Assessing footwear in a clinical setting continues to be practitioner specific and there is limited guidance to direct advice. Health professionals must have access to clinically appropriate and reliable footwear assessment tools to educate patients on healthier footwear choices. The primary aim of this study was to critique what elements should be in a footwear assessment tool with a secondary aim of testing the agreed tool for validity.A combined Nominal Group Technique and then a Delphi technique from purposively sampled experts of foot health professions were employed to critique elements of footwear assessment. The agreed tool was then tested by practising podiatrists on 5 different shoes to assess the validity and reliability of the measures.Twelve test evaluation criteria were identified receiving significant ratings to form the final footwear assessment tool consisting of five footwear themes. Application of the tool in a clinical setting validated the themes of footwear characteristics, footwear structure, motion control and wear patterns. However, the assessment of footwear fit was not reliable.The footwear tool was refined based on the collective consensus achieved from the rounds creating a more clinically appropriate tool. The validity of this tool was assessed as high in some of the themes but for those that were lower, a training need was identified.

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The Future of Footwear Friction

Beschorner

Yamaguchi

et al. 2021

Lecture Notes in Networks and Systems

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Effect of tread design and hardness on interfacial fluid force and friction in artificially worn shoes

Cited by 14 publications

References 28 publications

Frictional Characteristics of Progressively Worn Footwear Outsoles on Slippery Surfaces

Frictional Characteristics of Progressively Worn Footwear Outsoles on Slippery Surfaces

Evaluation and optimisation of a footwear assessment tool for use within a clinical environment

The Future of Footwear Friction

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