Experimental Tribology of Human Skin

Masen, Marc Arthur; Veijgen, N.K.; Klaassen, Michel

doi:10.1007/978-3-030-13279-8_10

Cited by 4 publications

(4 citation statements)

References 74 publications

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“…Although only a handful of studies have focused on static friction of hydrogels [54,[90][91][92], there is sufficient experimental evidence demonstrating the dependence of adhesion and static friction on contact time. While static friction is out of the scope of this review, it is worth mentioning that wear of soft biological materials has often been related to adhesion and static friction [93][94][95], and hence, future research should be dedicated to improving our understanding of the static friction of hydrogels, as well.…”

Section: Closing Remarks and Future Perspectivesmentioning

confidence: 99%

Advances in Understanding Hydrogel Lubrication

Shoaib

Espinosa‐Marzal

2020

Colloids and Interfaces

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Since their inception, hydrogels have gained popularity among multiple fields, most significantly in biomedical research and industry. Due to their resemblance to biological tribosystems, a significant amount of research has been conducted on hydrogels to elucidate biolubrication mechanisms and their possible applications as replacement materials. This review is focused on lubrication mechanisms and covers friction models that have attempted to quantify the complex frictional characteristics of hydrogels. From models developed on the basis of polymer physics to the concept of hydration lubrication, assumptions and conditions for their applicability are discussed. Based on previous models and our own experimental findings, we propose the viscous-adhesive model for hydrogel friction. This model accounts for the effects of confinement of the polymer network provided by a solid surface and poroelastic relaxation as well as the (non) Newtonian shear of a complex fluid on the frictional force and quantifies the frictional response of hydrogels-solid interfaces. Finally, the review delineates potential areas of future research based on the current knowledge.

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Section: Closing Remarks and Future Perspectivesmentioning

confidence: 99%

Advances in Understanding Hydrogel Lubrication

Shoaib

Espinosa‐Marzal

2020

Colloids and Interfaces

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“…An advantage of such traditional tribological equipment is their ability to be used to assess the skin's frictional properties without dedicated test apparatus [20,21]. However, with the use of such traditional tribological laboratory set-ups, comes the often limited range of body regions able to be measured, typically the distal upper or distal lower limbs [22,23]. Understanding the regional differences of friction at the skin-textile interaction across various body locations is crucial to mitigating the occurrence and impact of health-related dermatological problems and sensorial discomfort.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Design and Repeatability of a Novel Device to Measure Friction of Mechanical Surrogate Skins in Contact with Cotton Textiles

2021

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The ability to measure the level of friction between the human skin and a given textile is critical across fashion and textiles sectors, not least for the development of sporting and protective clothing. A portable custom-made device capable of measuring friction during the skin-textile interaction across often difficult or impossible to investigate body regions with objective repeatability has been established. The friction between a pre-shrunk 100% cotton textile and a quantity of four control surfaces (transparent and patterned polycarbonate plastic, and silicon and lorica surrogate skin) was measured three times per day across five consecutive days. The results clearly demonstrated that the novel friction test device had an excellent repeatability of 0.94 and 0.93 intraclass corelation coefficient for static and dynamic friction coefficient measurement, respectively. The silicon surrogate skin control surface produced the highest friction coefficient, while the pattered polycarbonate plate demonstrated the lowest friction coefficient, suggesting that the physical features of the control surface material influenced the recorded coefficient of friction. It was also revealed that the relationship between the static and dynamic friction coefficient is dependent on the surface material.

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“…On the light of this finding, it shows that tactile perception and skin friction coefficient were distinct phenomena when the changes in skin friction coefficient were induced by regional difference, and/ or the range of the coefficient of friction values were small. It seems likely, therefore, that skin friction is related to physiological features of skin (thickness of skin and elasticity of skin depends on age, gender and ethnicity), physical features of conduct material (thickness of the material, surface finish, roughness and stiffness), and environmental conditions [41,[52][53][54] whereas tactile perception is related to the distribution or sensitivity of mechanoreceptors within the skin, as noted above. As such, mechanoreceptor distribution over the body may go some way to explain variations in tactile perception across the six body location [10][11][12][13].…”

Section: Hypothesis 5-there Would Be a Relationship Between Skin Friction Coefficient And Tactile Perceptionsmentioning

confidence: 99%

Evaluating the Repeatability of Friction Coefficient Measurements and Tactile Perceptions in Skin–Textile Interactions Across Body Regions

2022

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Measuring the friction between human skin and textiles is essential to preventing skin-related health problems and wearer discomfort. This study sought to evaluate the repeatability of friction coefficient measurements and tactile perceptions at various human body regions, using a recently developed portable friction measuring device. Using the device, a cotton textile was applied to six test locations. The friction coefficient and tactile perceptions were taken three times, at each test site. The repeatability of friction coefficient was excellent with ICC of 0.91 ± 0.05 for static and 0.91 ± 0.06 for dynamic friction coefficient, and tactile perception showed good to excellent repeatability. The friction coefficient and tactile perception significantly differed across the body regions (p = 0.008 and p = 0.003, respectively). The chest showed the highest static friction coefficient with 0.90 ± 0.19 and dynamic friction coefficient with 0.79 ± 0.20, whereas the dorsal forearm with static 0.31 ± 0.07 and dynamic 0.25 ± 0.05 was the lowest. The ratings of tactile perceptions were independent of friction coefficient when the changes in the coefficient of friction were induced by regional difference, and/or the range of the coefficient of friction values were small. Moreover, skin temperature and friction coefficient correlated positively, whilst cutaneous hydration and friction coefficient did not.

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Experimental Tribology of Human Skin

Cited by 4 publications

References 74 publications

Advances in Understanding Hydrogel Lubrication

Advances in Understanding Hydrogel Lubrication

Evaluating the Design and Repeatability of a Novel Device to Measure Friction of Mechanical Surrogate Skins in Contact with Cotton Textiles

Evaluating the Repeatability of Friction Coefficient Measurements and Tactile Perceptions in Skin–Textile Interactions Across Body Regions

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