Application of infrared thermography and geophysical methods for defect detection in architectural structures

Non-destructive testing of composite materials by means of active thermography-based tools

“…[1][2][3][4][5][6][7][8] In contrast with passive thermography, active thermography (AT) requires the component under study being stimulated by an external source. The thermal excitation needed to conduct the analysis can be provided by means of different devices, including mechanical (vibrothermography) [9,10], electrical (Eddy current thermography) [11] or thermal systems (step heating, flash, lock-in, pulsed/transient), [12][13][14][15].…”

Using active thermography to inspect pin-hole defects in anti-reflective coating with k-mean clustering

“…(7)-(11) for non-defective areas. The unevenness of infrared readings causes a problem [36][37][38]. When using spatial derivations, which were used to detect the edge of defective areas [33][34][35], to detect defects in the film: once the main trend of the derivations of the thermal image is close to the level of the change caused by a defect, the defect edge may become blurred based on derivations.…”

Dampness Problems in a Historic House in İzmir, Turkey

“…However, owing to the developments in nondestructive or slightly destructive test techniques in the recent years, it is possible to carry out diagnostic studies and surveys in a relatively short time. Among these techniques, infrared thermography (IRT) (Grinzato et al, 1998;2002;Balaras and Argirou, 2002;Avdelidis and Moropoulou, 2004;Barreira and Freitas, 2007) impulse or ground penetration radar (Moropoulou et al, 2002), microwave (Binda et al, 1998;Ka¨a¨ria¨nen et al, 2001) and ultrasonic velocity (UV) measurements (Grinzato et al, 2004), and measurements of electrical conductivity, particularly in wood (Quarles, 2008) are those mostly employed in building and site investigations (Wirahadikusumah et al, 1998;Wiggenhauser, 2002;Clark et al, 2003;Meola et al, 2005).…”