Microscopic contact area and friction between medical textiles and skin

Derler, S.; Rotaru, G.-M.; Ke, Wei; Issawi-Frischknecht, L. El; Kellenberger, P.; Scheel‐Sailer, Anke; Rossi, René M.

doi:10.1016/j.jmbbm.2014.06.014

Cited by 31 publications

(34 citation statements)

References 26 publications

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“…The real contact area is more important compared to apparent contact area in order to predict the friction due to adhesion component of friction and it is difficult to be measured experimentally (Derler et al, 2014). The apparent contact area is defined as the area of the fingertip in contact with the counter-surface (Bowden and Tabor, 1950;van Kuilenburg et al, 2012).…”

Section: Skin Tribologymentioning

confidence: 99%

The role of the sliding direction against a grooved channel texture on tool steel: An experimental study on tactile friction

Zhang

Urribarri

Hurtado

et al. 2015

International Journal of Solids and Structures

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a b s t r a c tTo control tactile friction, that is the friction between fingertip and counter-body, the role of surface texture is required to be unveiled and defined. In this research, an experimental approach is used based on measuring tactile friction for directional texture (grooved channel) with varying depths. For a reference surface, in this current case a polished surface from the same tool steel is compared. The experimental results are analyzed to explain the observed skin friction behavior as a function of surface texture parameters, sliding direction and applied normal load. Sliding parallel to the groove length shows greater values in COF than sliding perpendicular to the groove direction. Furthermore, parallel sliding reveals a higher dependency of COF on the depth of the grooved channel texture than perpendicular sliding. Application of the two term friction model suggests that the adhesion component of friction has greater impact on parallel than perpendicular sliding direction. According to the observations, grooved channels are well suited to control skin friction in direction dependent sliding, for moderately loaded contact situations. This experimental research contributes to the haptic perception related research, and to the development of other direction-dependent surface structures for touch.

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Section: Skin Tribologymentioning

confidence: 99%

The role of the sliding direction against a grooved channel texture on tool steel: An experimental study on tactile friction

Zhang

Urribarri

Hurtado

et al. 2015

International Journal of Solids and Structures

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“…The representative polyurethane skin model is Lorica artificial leather, consisting of polyamide microfleece coated with polyurethane. It was developed for realistically simulating human skin friction against textiles under dry conditions 61) . In addition to friction properties, the Lorica skin model reproduces surface properties of human skin and shows similar force-deformation characteristics 15,16) .…”

Section: 2 Polyurethanementioning

confidence: 99%

The Development of Physical Skin Model for Biomechanical Applications

Lin

Zeng

2017

sobim

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The skin, which is known as a complex multi-layered tissue, is vital for protecting the body from potentially harmful external environment and exhibits complex mechanical behaviour. As reported, skin is a non-linear, anisotropic and viscoelastic materials, with its mechanical properties varied in each skin layer and influenced mainly by skin hydration status, environment humidity and test conditions. Therefore, it is difficult to study the mechanical and tribological interactions between human skin and materials for the development of human contacting products. And in order to better understand the mechanical interactions between human skin and various products for optimizing surfaces and materials in contact with human skin, it is significant to use instrumental mechanical and tribological measurements, which could provide objective and more reproducible results without inter-and intra-subject variations. Past decades we have witnessed many endeavors exerted for developing physical skin model to objectively study the interactions between human skin and materials, instead of using in vivo or ex vivo human skin or animal skin. This review article gives an overview of the development of physical skin model for biomechanical applications, in which the progresses made in the synthesis and the following tests of skin-materials interaction were summarised and discussed.

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“…It is now agreed that mechanical compressive and/or shear loadings acting either on the outer or inner skin surfaces may be ones of the primary disposing factors [4][5][6]. They can lead to direct mechanical damage to cells [7,8]. In this case, "Pressure Ulcer Prevention" protocols (PUPP) will notice it and start the curing treatment [3].…”

Section: Introductionmentioning

confidence: 99%