Parcourir par tags

Tous les tags » Test d’évaluation de la friction (RSS)
Contribution of gait parameters and available coefficient of friction to perceptions of slipperiness
Perceived slipperiness rating (PSR) has been widely used to assess walkway safety. In this experiment, 29 participants were exposed to 5 floor types under dry, wet and glycerol conditions. The relationship between their PSR and objective measurements, including utilized coefficient of friction (UCOF), gait kinematics and available coefficient of friction (ACOF), was explored with a regression analysis using step-wise backward elimination. The results showed that UCOF and ACOF, as well as their difference, were the major predictors of the PSR under wet and glycerol conditions. Under wet conditions...
Optimisation of the mechanical slip resistance test for footwear used in EN ISO 13287:2007 - Follow on study
The measurement of the slip resistance of footwear is inherently difficult due to the complexity of the human gait, which leads to changing values of the biomechanical parameters during the walking step. Only some steps result in a slipping heel, which compounds the difficulty in identifying the values of the parameters that need to be simulated. A number of studies have attempted to measure the parameters of walking and/or a slip, in order that realistic values can be incorporated into tests attempting to replicate the slip process. Source : http://www.hse.gov.uk/research/rrpdf/rr951.pdf
Over-treating tiles with 10 times the amount of hydrofluoric acid normally used leads to more slip resistant surface
There are many anti-slip treatments that claim to reduce the risk of slips and falls. In a previous investigation, it was shown that the normal treatment of smooth and glazed ceramic tiles with an aqueous solution of hydrofluoric acid increased only slightly the dry and wet friction and the average roughness but made the tiles more fragile and more difficult to clean. This article reports the impact of multiple cycles of hydrofluoric acid treatment and abrasive wear and the impact of over-treating the tiles with 10 times the amount of hydrofluoric acid normally used. The overtreatment removes more...
A field assessment of floor slipperiness in a student cafeteria
Investigation of floor slipperiness is critical in studying the risk of slips and falls. This research conducted friction measurements and employee survey on floor slipperiness in a student cafeteria in a university in China in order to study the correlation between the two types of floor slipperiness measure. It was found that the fryer area in kitchen 1 and the meat defrost sink in kitchen 2 had significantly the lowest coefficient of friction (COF) values among all areas in the same kitchen. The results showed that the levels of friction on the floors in different areas in each kitchen were...

Abonnement courriel

Messages récents

Catégories

Mots-Clés (Tags)

Blogoliste

Archives