动态微印压方法前臂皮肤黏弹性属性测量

摘要

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) kPa and (5.37 ±2.83) kPa, respectively, so the average complex modulus was 41.59 kPa.It was concluded that the Kelvin linear viscoelastic model could help to describe the properties of human forearm skin layers.%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） kPa，平均损耗模量为5.37±2.83 kPa，平均复模量值为41.59 kPa。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。