Defect Detection in Composite Materials by Thermography Techniques

Compared with other materials like metals. The non destructive testing of composites is still a relatively immature area. Composite material which are strong and can with stand very high loads but even a small flaw in such parts will lead to catroscopic failure. Defects as voids, dislocation can be detected by thermography technique. The two advanced types of thermography as Lock-in Thermography and Pulsed eddy current stimulated Thermography as to be applied on composites. Where the comparison and experimental result is analyzed based on the inspection of composite materials. Results shows the many calibrated values for different samples of glass fibers which will be help full for inspection for different thickness of composite materials. This paper shows the potential usefulness of the thermal methods.