红外无损检测由于其非接触,无损伤,检测效率高等优势,在缺陷检测领域取得了越来越广泛的应用。本文针对平板结构内表面缺陷的识别问题,通过ANSYS软件建模,分析了缺陷的面积、深度、加热热流大小等对缺陷可检测性的影响。该研究对实际的红外无损检测工作具有一定的指导意义。 Due to its advantages of non-contact, non-destructive and high detection efficiency, infrared non-destructive testing has gained more and more widespread application in the field of defect inspection. In this paper, for the identification of internal surface defects of flat structure, the influence of defect area, depth and heating heat flux on the detectability of defects is analyzed by ANSYS software modeling. This research is of guiding significance to the actual infrared nondestructive testing.