Magnesium carbonate and rosin powders stabilize sliding motion between rubber-gloved human hand and grasped cylindrical bar
Magnesium carbonate and rosin powders stabilize sliding motion between rubber-gloved human hand and grasped cylindrical bar
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DOI：
10.1299/jamdsm.2015jamdsm0026
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发表时间：
2015-01-01
影响因子：
0.9
通讯作者：
Hokkirigawa, Kazuo
中科院分区：
文献类型：
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作者：
Yamaguchi, Takeshi;Hokkirigawa, Kazuo
我们研究了通常用作防滑剂的碳酸镁和松香粉的效果，以便于控制戴着橡胶手套的手垂直抓取的不锈钢棒的滑动运动。15名受试者被要求用主手向下滑动不锈钢棒，通过控制握力来控制滑动速度恒定，并将棒停在距起点0.2m的5 0 S范围内，在手套手与棒的界面上进行无粉干、碳酸镁干、松香粉干、无粉湿、碳酸镁湿、松香粉湿6种条件下的滑动控制实验。捕捉到杆件的滑动运动，计算出杆件的到达时间、总滑动距离和滑动速度的标准差。通过滑杆的滑动运动估计滑杆与手套手之间的摩擦力。通过感官评定评价杆件滑动运动的可控性。滑动控制试验表明，与无粉末的干湿条件相比，两种粉末均减小了抓持杆的滑动速度变化，提高了其滑动运动的可控性。在干燥和潮湿条件下滑动时，粉末的应用也减少了橡胶手套手与抓取的杆之间的摩擦力的变化。这些结果表明，两种粉末都稳定了摩擦，从而改善了抓持杆的滑动控制。
We investigated the effect of magnesium carbonate and rosin powders, conventionally used as anti-slip agents, for the ease of controlling the sliding motion of a stainless steel bar grasped vertically by a hand wearing a rubber glove. Fifteen participants were instructed to slide the stainless steel bar downward with their dominant hand and control the sliding speed to be constant by controlling their grip force, and stop the bar 0.2 m from the starting point within 5 0 s. Sliding control tests were conducted under six conditions of the interface between gloved-hand and the bar: dry without powder, dry with MgCO3 powder, dry with rosin powder, wet without powder, wet with MgCO3 powder, and wet with rosin powder. The bar sliding motion was captured and the time of arrival, total sliding distance of the bar, and standard deviation of the sliding velocity of the bar were calculated. The friction force between sliding bar and gloved-hand was estimated from the bar sliding motion. The controllability of the sliding motion of the bar was evaluated by sensory assessment. The sliding control test indicated that both powders reduced the variation in sliding velocity of the grasped bar and improved the controllability of its sliding motion compared with unpowdered dry and wet conditions. Powder application also decreased variation in the friction force between the rubber-gloved hand and the grasped bar during sliding under dry and wet conditions. These results suggest that both powders stabilize friction, thereby improving the sliding control of a grasped bar.