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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。
Aiming at the non-destructive testing of the infrared thermal imaging of the large-scale stone cultural relic represented by the rock painting at present, the research is still in the stage of qualitative detection, which lacks the quantitative analysis. A large-scale stone relic based on the infrared thermal imaging and the finite element simulation of temperature field Nondestructive testing techniques and methods. Firstly, based on the theory of heat conduction, the mechanism of heat conduction in rock painting was analyzed. Based on the actual situation of rock painting, a thermal model was established. Then the finite element software ANSYS was used to simulate the heat conduction process of rock painting seepage and dry stalactites. The simulation results show that it is a very effective method to study the thermal imaging characteristics of large-scale stone cultural relics by means of finite element simulation. This study provides a valuable reference for the detection and analysis of large-scale stone cultural relics diseases.