基于瞬态平面热源法的牛皮质骨导热系数测试实验研究  

Experimental research on thermal conductivity test of bovine cortical bone based on transient plane source method

作　　者：姚帅 赵韡[1] 陈俊伟 YAO Shuai;ZHAO Wei;CHEN Junwei(North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学,山西太原030051

出　　处：《中国测试》2022年第3期41-46,共6页China Measurement & Test

基　　金：国家自然科学基金青年基金项目(51905499);中国博士后科学基金面上项目(2019M661067)。

摘　　要：为模拟皮质骨切削的温度传递过程,需要可靠的导热系数参数。该文阐述基于瞬态平面热源法测量牛皮质骨导热系数的原理及实验方法。该方法针对牛皮质骨在垂直、交叉、平行三个正交方向的导热系数进行测量,并研究其对皮质骨导热系数的影响。实验表明:在温度、湿度等环境因素及组织水分为主的骨材料性能等条件相对确定的前提下,皮质骨的平行方向导热系数测量平均值为0.628 6 W/(m·K),交叉方向导热系数测量平均值为0.628 8 W/(m·K),垂直方向导热系数测量平均值为0.725 7 W/(m·K);皮质骨导热系数在交叉方向与平行方向上差异很小,在垂直方向上实验测量值较另外两个方向增长约15%;在模型构建过程中,导热系数在平行方向和交叉方向可不做区分,取值为0.62~0.63 W/(m·K),在垂直方向可取0.72~0.73 W/(m·K)为参考值。In order to simulate the temperature transfer process of cortical bone cutting, reliable thermal conductivity parameters are required. The article describes the principle and experimental method of measuring the thermal conductivity of cortical bone based on the transient plane source method. The method measures the thermal conductivity of cortical bone in three orthogonal directions, vertical, cross, and parallel, and studies its influence on the thermal conductivity of cortical bone. Experiments show that: under the premise of relatively certain conditions such as temperature, humidity and other environmental factors and tissue moisture-based bone material performance and other conditions, the average measured thermal conductivity of the cortical bone in the parallel direction is 0.628 6 W/(m·K), the average measured thermal conductivity in the cross direction is 0.628 8 W/(m·K), and the average measured thermal conductivity in the vertical direction is0.725 7 W/(m·K). The thermal conductivity of cortical bone has little difference between the cross direction and the parallel direction, and the experimental measurement value in the vertical direction has increased by about15% compared with the other two vertical directions. In the process of model construction, the thermal conductivity in the parallel direction and the cross direction can be omitted to distinguish, the value is 0.62-0.63 W/(m·K). In the vertical direction, 0.72-0.73 W/(m·K) can be taken as a reference value.

关 键 词：瞬态平面热源法 导热系数 生物骨 牛皮质骨 

分 类 号：TB302.1[一般工业技术—材料科学与工程] R318[医药卫生—生物医学工程]