2024/05/06 by Xianyu Wu, Bin Zhou, Wu, Xianyu +7
Engineering · #Calibration and Measurement Techniques #FOS: Electrical engineering #Image and Video Processing (eess.IV) #Infrared Target Detection Methodologies #Signal Processing (eess.SP) #Thermography and Photoacoustic Techniques #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2405.03126
openalex publication_date 2024/05/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Infrared pulse thermography non-destructive testing (NDT) method is developed based on the difference in the infrared radiation intensity emitted by defective and non-defective areas of an object. However, when the radiation intensity of the defective target is similar to that of the non-defective area of the object, the detection results are poor. To address this issue, this study investigated the polarization characteristics of the infrared radiation of different materials. Simulation results showed that the degree of infrared polarization of the object surface changed regularly with changes in thermal environment radiation. An infrared polarization imaging-based NDT method was proposed and demonstrated using specimens with four different simulated defective areas, which were designed and fabricated using four different materials. The experimental results were consistent with the simulation results, thereby proving the effectiveness of the proposed method. Compared with the infrared-radiation-intensity-based NDT method, the proposed method improved the image detail presentation and detection accuracy.