Tribology of human skin and mechanical skin equivalents in contact with textiles

The friction of untreated human skin (finger) against a reference textile was investigated with 12 subjects using a force plate. In touch experiments, in which the subjects assessed the surface roughness of the textile at normal loads of 1.5 ± 0.7 N, the average friction coefficients ranged from 0.2...

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Veröffentlicht in:Wear Jg. 263; H. 7; S. 1112 - 1116
Hauptverfasser: Derler, S., Schrade, U., Gerhardt, L.-C.
Format: Journal Article Tagungsbericht
Sprache:Englisch
Veröffentlicht: Lausanne Elsevier B.V 10.09.2007
Amsterdam Elsevier Science
New York, NY
Schlagworte:
Applied sciences
Exact sciences and technology
Friction
Friction, wear, lubrication
Machine components
Mechanical engineering. Machine design
Mechanical properties
Physical properties
Polymer industry, paints, wood
Properties and testing
Skin
Skin model
Technology of polymers
Textile
Tribology
Skin
Textile
Friction
Skin model
Tribology
Nylon
Roughness
Modeling
Dry friction
Surface structure
Water content
Friction coefficient
Friction test
Siloxane polymer
Hysteresis
Textile industry
Human
Skin friction
Finger
Mechanical contact
Rough surface
Experimental study
Adhesion
Friction material
Plate
Polyurethane
ISSN:0043-1648, 1873-2577
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Zusammenfassung:The friction of untreated human skin (finger) against a reference textile was investigated with 12 subjects using a force plate. In touch experiments, in which the subjects assessed the surface roughness of the textile at normal loads of 1.5 ± 0.7 N, the average friction coefficients ranged from 0.27 to 0.71 and varied among individuals due to different states of skin hydration. In experiments, in which the subjects varied the normal load, the friction coefficients were in the same range and showed practically no load dependence, indicating that both adhesion and hysteresis are contributing to the friction behaviour. The results for human skin were compared with apparative friction measurements using different silicone and polyurethane materials as mechanical skin equivalents. A polyurethane coated polyamide fleece with a surface structure similar to that of skin showed the best correspondence with human skin under dry conditions. The friction coefficients of this material increased with the moisture content of the reference textile. A realistic skin model in combination with an objective friction test method would be very useful for the textile industry and allow the efficient development of new textiles with improved and skin-adapted surface and frictional properties for sport and medical applications.
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ISSN:0043-1648
1873-2577
DOI:10.1016/j.wear.2006.11.031