岩画红外热成像无损检测的热学分析与数值模拟研究  

Thermal analysis and numerical simulation of rock paintings based on nondestructive testing of infrared thermal imaging

作　　者：张慧慧[1,2] 

机构地区：[1]东北大学资源与土木工程学院,沈阳110819 [2]辽宁省交通高等专科学校测绘系,沈阳110122

出　　处：《工程勘察》2017年第9期1-4,20,共5页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金资助项目(41440032;41074127);国家重点基础研究发展计划(973)项目(2011CB707102)

摘　　要：针对目前以岩画为代表的大型石质文物的红外热成像无损检测研究仍处在定性检测阶段、缺少定量分析的问题,建立了一种基于红外热成像与温度场有限元模拟的大型石质文物无损检测技术方法。首先基于热传导理论,对岩画病害的热传导过程进行了机理分析,并根据岩画实际情况,建立了热学模型;然后利用有限元软件ANSYS对岩画渗水与干燥钟乳石病害热传导过程进行了数值模拟。模拟结果表明:借助有限元模拟手段研究大型石质文物病害热像特征变化是非常有效的方法,该研究为大型石质文物病害检测分析提供了一种有参考价值的方法。At present, the nondestructive testing of large-scale stone relics, which is represented by rock paintings, is still at the stage of qualitative research and lack of quantitative analysis. A nondestructive testing technique for large-scale stone relics is introduced in this paper based on infrared thermal imaging and temperature field finite element simulation. Firstly, the heat conduction process of rock paintings is analyzed in terms of the theory of heat conduction, and the thermal model is established according to the actual situation of rock paintings; and then, the finite element software ANSYS is used to simulate the heat conduction process of seepage and drying stalactites. The simulation results show that it is effective to study the thermal image characteristics of large stone relics diseases by the means of finite element simulation. This study provides a valuable method for large stone relics disease detection and analysis.

关 键 词：岩画 红外热成像 热学分析 有限元模拟 

分 类 号：TP722.5[自动化与计算机技术—检测技术与自动化装置]