Development of Active Thermographic Inspection System Using Remote Heating Methods

Abstract

This study focuses on active thermographic non-destructive testing using remote heating equipments. Inspection capability using two different heating systems were examined, one is halogen lamp with light collecting mirror and another is CO2 laser scanning system. Experimental results showed that defect in a concrete specimen located at 20-m distance from heater was detected by using the focused halogen lamp, and that defects in a CFRP specimen were detected in thermal images obtained after laser scanning heating. These results imply that inspection system with these heating equipments is effective to inspect objects located far from observers.