Study on detecting the influence of sunlight based on infrared thermal-imaging method

Taking the wall specimens of Guiyang city in hot summer and cold winter zone as the research object, the hollow imperfection of different areas and sizes are made in the surface layer of different wall specimens. Guide PS800 infrared thermal imaging instrument is used to detect the defects in the surface layer. The results show that the identification of hollow defects is independent of the ambient temperature and whether the surface layer is exposed to sunlight; the area of the defect is less than 100mm × 100mm is not easy to be identified.