动态微印压方法前臂皮肤黏弹性属性测量

Measurement of Viscoelastic Properties of Forearm Skin Based on Dynamic Micro Indentation Method

对前臂皮肤黏弹性属性的了解有助于临床康复产品设计。基于动态微印压方法,对6位男性志愿者前臂皮肤进行了测量,最大压入位移为100μm,频率范围为5~30 Hz。前臂皮肤的平均接触刚度和平均接触阻尼系数分别为(165.02±9.40)N/m、(0.22±0.047)Ns/m,平均储能模量为(41.25±2.35)k Pa,平均损耗模量为5.37±2.83 k Pa,平均复模量值为41.59 k Pa。结果表明前臂皮肤层的黏弹性属性采用Kelvin线性黏弹性模型描述具有一定合理性。

Knowledge of viscoelastic properties of the forearm skin can help the design of clinical rehabilitation products. Based on dynamic micro indentation method,6 male volunteers were enrolled to measure their forearm skin,the maximum indentation displacement was set as 100 μm,the indentation frequency range was from 5 to 30 Hz with 5 Hz increment. Results shows that the average contact stiffness and average contact damping coefficient were（ 165. 02 ± 9. 40） N / m and（ 0. 22 ± 0. 047） N·s / m,respectively. The average storage modulus and the loss modulus were（ 41. 25 ± 2. 35） k Pa and（ 5. 37 ± 2. 83） k Pa,respectively,so the average complex modulus was41. 59 k Pa. It was concluded that the Kelvin linear viscoelastic model could help to describe the properties of human forearm skin layers.