Tactile perception: Finger friction, surface roughness and perceived coarseness

Skedung, Lisa; Danerlöv, Katrin; Olofsson, Ulf; Johannesson, Carl; Aikala, Maiju; Kettle, John; Arvidsson, Martin; Berglund, Birgitta; Rutland, Mark W.

doi:10.1016/j.triboint.2010.04.010

Cited by 112 publications

(107 citation statements)

References 23 publications

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“…The higher temperature and humidity of the test environment used for the moist skin can be expected to increase this effect compared to dry conditions because the profuseness of sweating is greater in more humid conditions. As mentioned earlier, increased hydration results in increased adhesion friction according to equation (1). A similar hypothesis has been postulated by Dzidek et al In experiments with a human finger sliding in a reciprocating manner against smooth glass and polypropylene, the authors found that the coefficient of friction increased by up to an order of magnitude within an occlusion time of 20 s but that this effect was less for higher roughness of the skin-contacting material [51].…”

Section: Effect Of Sliding Timesupporting

confidence: 71%

“…With devices that involve any form of physical interaction with human skin, the friction behaviour against the skin has an important though complex and not well-defined influence on the tactile perception of the device [1][2][3] and thus the user's experience. In many cases the skin friction behaviour also determines or affects the primary functional performance, such as where grip performance is integral to the functionality [4], examples being devices for the physically weak or disabled and sports equipment.…”

Section: Introductionmentioning

confidence: 99%

“…It is reasonable to expect that this will increase boundary lubrication and hence reduce the shear strength at the interface ( ) and thus the adhesion friction F adh according to equation (1). If sufficient moisture migrates to the surface, the fluid availability may become sufficient to enable elasto-hydrodynamic lubrication in the boundary to mixed regime, lowering the friction even further.…”

mentioning

confidence: 99%

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Comparison of the Friction Behavior of Occluded Human Skin and Synthetic Skin in Dry and Moist Conditions

Franklin

Baranowska

Hendriks

et al. 2016

Tribology Transactions

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The goal of this work was to assess the suitability of a commercial synthetic skin to simulate occluded human skin friction behaviour in dry and moist skin conditions and under different applied surface pressures, with the view to using this material as a tribological test-bed for healthcare and personal care devices that are in direct contact with the skin during use. A flat rotating ring friction measurement device, in which one part of the skin surface is continuously covered (i.e. occluded), was used to compare the friction behaviour of human skin and the synthetic skin in controlled nominally dry and nominally moist skin conditions. Three loading levels were tested, simulating light, medium and high skin pressures typical of many lifestyleand personal health-related applications. The results showed that the friction behaviour of the synthetic skin tested here was notably different to that of human skin in vivo in terms of the effects of skin hydration, sliding time and applied surface pressure. It is concluded that, for use as a tribological test-bed, the tested synthetic skin model does not provide an acceptable alternative to in vivo tests using human skin.

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Section: Effect Of Sliding Timesupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Comparison of the Friction Behavior of Occluded Human Skin and Synthetic Skin in Dry and Moist Conditions

Franklin

Baranowska

Hendriks

et al. 2016

Tribology Transactions

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show abstract

“…Westergaard developed a model to estimate the contact ratio between an elastic half-space and rigid wavy surface with spacing (k) and amplitude (depth or height of the structures) [36]. Study found that the Westergaard model also can be applied for a viscoelastic half-space including skin sliding on a rigid wavy surface [11,12,16,22,26,29]. A modified contact model was proposed in the previous study to predict the contact ratio by calculating the average contact pressure ( p) and the pressure needed for the fingertip under the full contact condition…”

Section: The Geometric Effect Of the Contact Areamentioning

confidence: 99%

Texture Design for Reducing Tactile Friction Independent of Sliding Orientation on Stainless Steel Sheet

et al. 2017

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Surface texture is important for contact mechanical and tribological phenomena such as the contact area and friction. In this research, three different types of geometrical microstructures were designed and fabricated by pulsed laser surface texturing as semi-symmetric (grooved channel), asymmetric fractal (Hilbert curve), and symmetric patterns (grid). A conventionally finished surface as a reference sample from the same stainless steel sheet material was compared. From the experimental approach, a multiaxis force/torque transducer was used to investigate the functionality of surface texture based on measuring the tactile friction in three different sliding directions: perpendicular, parallel, and 45°to the textures. According to the dynamic friction measurements, the grid texture was indeed orientation independent. The other samples showed orientation-dependent frictional behavior, especially the grooved channel texture and reference sample. Furthermore, an analytical approach was applied to estimate the values of the friction coefficient by the pressure distribution method. From both the experimental and analytical approaches, the grid pattern was validated to be the optimal texture design in the concern of friction reduction and orientation-independent behavior.

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“…Klatzky and Lederman [17] studied the geometric properties of sandpaper surfaces based on the roughness perception while measuring behavioral and neurophysiological responses. In the work of Skedung et al [18], finger 90 Friction 4(2): 89-104 (2016) friction measurements are evaluated to determine the relationship between the coefficient of friction (COF) and surface roughness of a series of printing papers. Furthermore, Skedung et al [19] investigated the relationship between the perceptual dimensions and the implicated physical dimensions on the microstructured polydimethylsiloxane (PDMS) samples, and found that people are capable of dynamically detecting surface structures with wavelength of 760 nm and amplitude of 13 nm.…”

Section: Introductionmentioning

confidence: 99%

Selection of micro-fabrication techniques on stainless steel sheet for skin friction

et al. 2016

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This review gives a concise introduction to the state-of-art techniques used for surface texturing, e.g., wet etching, plasma etching, laser surface texturing (LST), 3D printing, etc. In order to fabricate deterministic textures with the desired geometric structures and scales, the innovative texturing technologies are developed and extended. Such texturing technology is an emerging frontier with revolutionary impact in industrial and scientific fields. With the help of the latest fabrication technologies, surface textures are scaling down and more complex deterministic patterns may be fabricated with desired functions, e.g., lotus effect (hydrophobic), gecko feet (adhesive), haptic tactile, etc. The objective of this review is to explore the surface texturing technology and its contributions to the applications.

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Tactile perception: Finger friction, surface roughness and perceived coarseness

Cited by 112 publications

References 23 publications

Comparison of the Friction Behavior of Occluded Human Skin and Synthetic Skin in Dry and Moist Conditions

Comparison of the Friction Behavior of Occluded Human Skin and Synthetic Skin in Dry and Moist Conditions

Texture Design for Reducing Tactile Friction Independent of Sliding Orientation on Stainless Steel Sheet

Selection of micro-fabrication techniques on stainless steel sheet for skin friction

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