Measurement of Floor Slipperiness Using Footwear Pads with Various Tread Groove Width Design

使用不同紋路寬度設計鞋材測試片之地板滑溜性之量測

李開偉(Kai-Way Li) ； 陳慶忠(Chin-Jung Chen)

《工業工程學刊》 22卷5期 (2005/09) Pp. 408-418

https://doi.org/10.29977/JCIIE.200509.0006

摘要

Measurement of the coefficient of friction (COF) between the shoe/sole and the floor is essential in understanding the risk of slipping accidents. COF measurements between the footwear material and floor using a slipmeter were commonly performed using flat footwear pads. Such measurements might underestimate the actual slip resistance of people's daily experiences because tread groove design on footwear is very common. This research investigates the effects of the tread groove width on the measured COF. The results indicated that tread groove width significantly (p＜0.0001) affect COF under various footwear material, floor, and contamination conditions. Wider tread grooves resulted in higher COF values with a few exceptions especially on oil contaminated floor. Stepwise regression was performed to establish a linear regression model between COF and the tread groove width under footwear material/floor/liquid-contamination conditions. A seven-independent-variable model with an adjusted R^2 of 0.74 was obtained. The lack of fit test result for the model was significant at p＜0.0001, indicating that the model adequately fit the friction measurement data.

關鍵字

滑倒／跌倒 ； 摩擦係數 ； 鞋底紋路設計 ； 迴歸模式

並列摘要

Measurement of the coefficient of friction (COF) between the shoe/sole and the floor is essential in understanding the risk of slipping accidents. COF measurements between the footwear material and floor using a slipmeter were commonly performed using flat footwear pads. Such measurements might underestimate the actual slip resistance of people's daily experiences because tread groove design on footwear is very common. This research investigates the effects of the tread groove width on the measured COF. The results indicated that tread groove width significantly (p＜0.0001) affect COF under various footwear material, floor, and contamination conditions. Wider tread grooves resulted in higher COF values with a few exceptions especially on oil contaminated floor. Stepwise regression was performed to establish a linear regression model between COF and the tread groove width under footwear material/floor/liquid-contamination conditions. A seven-independent-variable model with an adjusted R^2 of 0.74 was obtained. The lack of fit test result for the model was significant at p＜0.0001, indicating that the model adequately fit the friction measurement data.

並列關鍵字

slipping/falling ； coefficient of friction ； tread groove design ； regression model

參考文獻

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Chang, W.R.(2002).The effects of slip criteria and time on friction measurements.Safety Science.40,593-611.

Chang, W.R.,K.W. Li,Y. H. Huang,A. Filiaggi,T.K. Courtney(2004).Assessing floor slipperiness in fast-food restaurants in Taiwan using objective and subjective measures.Applied Ergonomics.35(4),401-408.