تعیین خواص بیومکانیکی پوست گاو در شرایط کشش تک محوری

ABSTRACT Quantifying the Biomechanical Properties of Bovine Skin under Uniaxial Tension

Skin is one of important organs in human and animal bodies, nevertheless its behavior is still not well defined [1]. Traumatic accident, burning, plastic surgery and cosmetic are few examples that need further study on human skin which requires observation of the actual skin behaviour at certain condition. Therefore, prior to any in vivo procedure and experiment, the in vitro process should be undertaken to ensure safety and reduce risk on human.

For that reason, this paper for the first time attempts to integrate an in vitro experiment of bovine skin and numerical method to quantify their Ogden parameters. This study is important as up to date, no single specific numerical value has been defined for bovine skin.

According to previous researches, the in vitro experiment was perform on animal skin such as murine, bovine, rabbit and etc [1]-[3]. The important parameters from their analysis and investigation were skin deformation and displacement. In another finding, several approaches such as experiment and numerical assessment were used to quantify its mechanical parameters such as Ogden materials constant, µ and exponent, α. Li and Li, Khaothong, Manan are among that focusing on finite element (numerical approach) analysis of mimicking agar-agar phantom and inner forearm of human skin [4]-[6]. On the other hand, Digital imaging is also used widely in physical skin analysis [7]-[10]. Dynamics Optical Coherence Elastography (OCE) and Digital Image Correlation technique were introduced by Liang et al. in determining biomechanical properties of human skin [7], [9], [10] while Laser and High Frequency Ultrasonic (LUS) technique were used by other researchers [4], [8]. For further investigation on skin, this paper analyzed the shaved bovine skin to observe the effect of bovine hair in the mechanical properties.