Infared thermography and modeling to the concrete deck with internal defects as a non-destructive testing

This work is aimed to investigate the temperature characteristics at the surface of the concrete decks, to detect the existence of internal defects buried in the solid in such a way that enables the quantitative determination of temperature distributions from the concrete. For this purpose, it is supposed that the signature for temperature characteristics is performed experimentally by means of Infrared (IR) thermography. A quantitative analysis of computational model developed by FVM implement that temperature distributions on the surface of the concrete with the internal defects have a significant feature by the dimension of defect, thermal conductivities of a variety of materials filled in the defect. According to the distance reaching the defects from the surface, the thermal imaging affected by temperature differences are compared, The simulations are also evaluated with the thermal pattern acquired by a qualitative IR thermography in a local district of the concrete deck.