Fig. 1. Test and thermal map processing flow chart

Fig. 2. Testing specimen

Fig. 3. Dynamic curve of impact response parameters with time

Fig. 4. Test results of 1#-4# specimen by ultrasonic C-scan

Fig. 5. Infrared thermal wave detection schematic diagram

Fig. 6. Active infrared thermal wave detection system

Fig. 7. Test results of 1# specimen (TS-15J) by pulse thermography

Fig. 8. Test results of 3# specimen (TP-15J) by pulse thermography

Fig. 9. Test results of 2# specimen (TS-30J) by pulse thermography

Fig. 10. Test results of 4# specimen (TP-30J) by pulse thermography

Fig. 11. Temperature change of 1# specimen after pulse excitation

Fig. 12. Test results of 1# specimen (TS-15J) by ultrasonic thermalgraphy

Fig. 13. Test results of 3# specimen (TP-15J) by ultrasonic thermalgraphy

Fig. 14. Test results of 2# specimen (TS-30J) by ultrasonic thermalgraphy

Fig. 15. Test results of 4# specimen (TP-30J) by ultrasonic thermalgraphy

Fig. 16. Time sequence change characteristics of 1#-4# specimen

Fig. 17. Schematic diagram of region growing algorithm

Fig. 18. Extraction and segmentation results of heat image damage by pulse infrared detection

Fig. 19. Extraction and segmentation results of heat image damage by pulse uitrasonic infrared detection