重力对皮肤热行为的影响：使用动态红外热成像的实验研究。
Influence of gravity on the skin thermal behavior: experimental study using dynamic infrared thermography.
机构信息
Laboratory of Mechanics and Civil Engineering, CNRS, University Montpellier 2, France.
出版信息
Skin Res Technol. 2013 Feb;19(1):e397-408. doi: 10.1111/j.1600-0846.2012.00657.x. Epub 2012 Jun 22.
BACKGROUND/AIM: To better understand the thermomechanical behavior of the skin and its direct environment, we present an experimental study using dynamic infrared thermography. This experimental study aims to highlight quantitatively some effects of blood flow on the heat diffusion.
METHODS
The originality of this research was to change the blood flow by using effects of gravity and to quantify the temperature changes. The experimental step consists of putting a cylindrical steel bar cooled or warmed on the skin of a human forearm and to measure the change of the temperature using an infrared camera. Measures have been recorded for different positions of the forearm.
RESULT AND CONCLUSION
We noted very clearly the influence of blood circulation in the veins on the diffusion of the temperature. The return to thermal balance is faster when the arm is in a horizontal position. Moreover, a comparative study of experimental cooling and warming showed a symmetrical thermal behavior for the skin under this type of thermal solicitations. This work provided to build a database that can be used for the validation of predictive thermal models of human skin.
背景/目的：为了更好地理解皮肤及其直接环境的热机械行为，我们使用动态红外热成像进行了一项实验研究。本实验研究旨在定量地突出一些血流对热扩散的影响。
方法
本研究的创新性在于利用重力效应改变血流，并量化温度变化。实验步骤包括将冷却或加热的圆柱形钢棒放在人体前臂的皮肤上，并使用红外摄像机测量温度变化。已经记录了前臂不同位置的测量值。
结果与结论
我们非常清楚地注意到静脉血液循环对温度扩散的影响。当手臂处于水平位置时，热平衡的恢复更快。此外，对实验冷却和加热的比较研究表明，在这种热刺激下，皮肤的热行为具有对称性。这项工作为建立一个数据库提供了基础，该数据库可用于验证人体皮肤的预测热模型。
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