Utilization of infrared thermography for detection of damage in a concrete slab is presented in this paper. Thermal non-destructive testing of concrete structures has many advantages, like rapid scanning of concrete surface, high speed of data collection and non-contact testing. The purpose of this study is optimization of the method to accurately determine damage extent in concrete structures. Active infrared thermography has been utilized to detect sub-surface defect in a concrete slab. Irregularities have been observed in the laboratory results. To collaborate experimental investigations, a model of the concrete slab that can be used in an experiment has been developed using finite element software. In the FEA software concrete slab was subjected to same amount of thermal excitation to simulate laboratory experiment. Transient analysis of concrete slab was done to get thermal images of surface of the slab. The images obtained were further processed by MATLAB program to get area of defect. Temperature readings obtained from model were observed to be much higher. However, defect area obtained from FEM model images was found to be closer to actual defect area than experimental images.
Optimization of Infrared Thermography for Damage Detection in Concrete Structures Using Finite Element Modelling
Lecture Notes in Civil Engineering
2020-11-24
12 pages
Article/Chapter (Book)
Electronic Resource
English
Infrared thermography , Transient analysis , Finite element model , Thermal image , MATLAB Engineering , Building Construction and Design , Construction Management , Geotechnical Engineering & Applied Earth Sciences , Geoengineering, Foundations, Hydraulics , Transportation Technology and Traffic Engineering
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