2018 Volume 29 Pages 75-86
This report describes the study of a method to automatically detect the locations of deformations in a structure based on the surface temperature distribution of the structure measured by infrared thermography. This method uses the two-dimensional Gabor Wavelet transform filter, which is effective for extracting local periodical and directional characteristics of transient signals in steady-state signals to detect inherent shape changes in the surface temperature distribution related to specific deformations in a structure. Cracks in a concrete structure were selected as deformations, and the surface temperature distribution of the structure containing cracks was obtained by the finite element method, an experiment, and actual measurement. The efficacy and function of this inspection method was examined using these data.
