Experimental Research On Frictional And Elastic Properties Of Human Skin

Skin is located at the surface of human body, it is the first line of human health. In daily life, human skin often contacts with a variety of materials, resulting in a lot of skin frictions, many physiological functions of the skin depend on its mechanical properties, and the skin elastic properties is an important parameter of skin mechanical properties. Therefore, study of human skin frictional and elastic properties have a great significance for maintaining better skin health and improving people's quality of life.At present, the study of skin friction is mainly on the traditional friction test devices at home and abroad, most of these devices can only test the upper limbs skin of human, having lots of limitations, the development of dedicated skin friction test device is relatively small at home and abroad. In this thesis, we designed a FS-1 portable skin friction tester, which is flexible, easy to use, and a wide range of applications, not only can test the friction coefficients of human upper limbs skin, but also forehead, face , and other sites.In this thesis,we tested the friction coefficients and elastic modulus of human skin on UMT-â…¡muti-specimen biomedical micro-tribometer, we also tested the friction coefficients of human skin on FS-1 portable skin frictional tester,and quantitativly studied gender, test sites, skin care product and test equipments to the effect on frictional and elastic properties of human skin,statistical analysis were used in data analysis.The results show that: (1) In selected samples of the crowd, gender has no significant effect on frictional properties of human skin,the frictional properties of human skin have significant differences among different test sites,there were significant differences on frictional properties of human skin between different test equipments; Silicone cream has significant effect on frictional properties of human skin,but there were no significant differences for the moisturizing properties of silicone cream between different gender,different test sites and different test equipments.(2) In selected samples of the crowd, gender has no significant effect on elastic properties of human skin, elastic properties of human skin have significant differences among different test sites;After using silicone cream, there were no significant differences on elastic properties of human skin.