Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland.
Institute for Mechanical Systems, Department of Mechanical and Process Engineering, ETH Zurich, Leonhardstrasse 21, 8092 Zurich, Switzerland; Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA.
J Mech Behav Biomed Mater. 2018 Feb;78:108-115. doi: 10.1016/j.jmbbm.2017.10.021. Epub 2017 Nov 14.
The facial tissue of 9 healthy volunteers (m/f; age: 23-60y) is characterized at three different locations using a procedure combining suction measurements and 18MHz ultrasound imaging. The time-dependent and multilayered nature of skin is accounted for by adopting multiple loading protocols which differ with respect to suction probe opening size and rate of tissue deformation. Over 700 suction measurements were conducted and analyzed according to location-specific mechanical and morphological characteristics. All corresponding data are reported and made available for facial tissue analysis and biomechanical modeling. Higher skin stiffness is measured at the forehead in comparison to jaw and parotid; these two regions are further characterized by lower creep deformation. Thicker tissue regions display a tendency towards a more compliant and less dissipative response. Comparison of superficial layer thickness and corresponding mechanical measurements suggests that connective tissue density determines the resistance to deformation in suction experiments.
采用一种结合抽吸测量和 18MHz 超声成像的程序，对 9 名健康志愿者（男女；年龄：23-60 岁）的面部组织在三个不同部位进行了特征描述。通过采用不同的抽吸探头开口大小和组织变形率的加载方案，考虑到皮肤的时变和多层特性。进行了超过 700 次抽吸测量，并根据位置特异性机械和形态特征进行了分析。所有相应的数据都被报告，并可用于面部组织分析和生物力学建模。与下颌和腮腺相比，额部的皮肤硬度更高；这两个区域的蠕变变形进一步具有较低的特点。较厚的组织区域表现出更顺应和低耗散的响应趋势。浅层厚度和相应机械测量的比较表明，在抽吸实验中，结缔组织密度决定了抵抗变形的能力。
