Friction of the Human Finger Pad: Influence of Moisture, Occlusion and Velocity
Friction of the Human Finger Pad: Influence of Moisture, Occlusion and Velocity
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DOI：
10.1007/s11249-011-9828-0
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发表时间：
2011-11-01
影响因子：
3.2
通讯作者：
Adams, Michael J.
中科院分区：
文献类型：
--
作者：
Pasumarty, Subrahmanyam M.;Johnson, Simon A.;Adams, Michael J.
当前的论文描述了人类指垫摩擦力的实验研究。这些数据强调了汗液分泌和接触闭塞在产生广泛的摩擦系数值中的作用，这些值对摩擦学结构、滑动速度、表面粗糙度和相对体的孔隙率特别敏感。特别是，通常在干燥光滑表面上观察到的大摩擦系数与相对潮湿的界面有关，并且可以通过减少或增加界面水分含量或通过表面粗糙化来显着降低。结论是，文献中报道的摩擦系数值的巨大范围主要是由于与不同摩擦学配置相关的咬合时间的差异，以及表面粗糙度和指垫出汗率的变化造成的。
The current paper describes an experimental study of the friction of the human finger pad. The data highlight the role of sweat secretion and contact occlusion in producing wide-ranging values for the coefficient of friction that are particularly sensitive to the tribological configuration, sliding velocity, surface roughness and porosity of the counterbody. In particular, the large coefficients of friction typically observed on dry smooth surfaces are associated with a relatively damp interface, and can be considerably reduced by either decreasing or increasing the interfacial moisture content or by surface roughening. It is concluded that the very large range in the values of the coefficient of friction reported in the literature mainly result from differences in occlusion time associated with different tribological configurations, as well as from variations in surface roughness and finger pad sweat rates.