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Friction Dynamics on Human Skin Surfaces

Yoshimune Nonomura1, Haruka Ouchi1

  • 1Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University.

Journal of Oleo Science
|April 14, 2020
PubMed

Keywords:
cosmeticsfrictionhuman skinsinusoidal motion

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Dry friction occurs when two solid surfaces slide against each other without any lubrication or fluid present. It causes resistance when pushing objects along a surface, like a gardener pushing a wheelbarrow. The force applied to move the cart causes dry friction between the wheel and the ground.
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One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
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