title: Detection and Inspection of Steel Bars in Reinforced Concrete Structures Using Active Infrared Thermography with Microwave Excitation and Eddy Current Sensors.
abstract: The purpose of this paper is to present a multi-sensor approach to the detection and inspection of steel bars in reinforced concrete structures. In connection with our past experience related to non-destructive testing of different materials, we propose using two potentially effective methods: active infrared thermography with microwave excitation and the eddy current technique. In this article active infrared thermography with microwave excitation is analyzed both by numerical modeling and experiments. This method, based on thermal imaging, due to its characteriatics should be considered as a preliminary method for the assessment of relatively shallowly located steel bar reinforcements. The eddy current technique, on the other hand, allows for more detailed evaluation and detection of deeply located rebars. In this paper a series of measurement results, together with the initial identification of certain features of steel reinforcement bars will be presented.
authors.affiliation: Szczecin Department of Electrical and Computer Engineering, West Pomeranian University of Technology, ul. Sikorskigo 37, Szczecin 70-313, Poland. szymanik@zut.edu.pl.
authors.forename: Barbara
authors.initials: B
authors.lastname: Szymanik
authors.affiliation: Szczecin Department of Electrical and Computer Engineering, West Pomeranian University of Technology, ul. Sikorskigo 37, Szczecin 70-313, Poland. frankowski@zut.edu.pl.
authors.forename: Paweł Karol
authors.initials: PK
authors.lastname: Frankowski
authors.affiliation: Szczecin Department of Electrical and Computer Engineering, West Pomeranian University of Technology, ul. Sikorskigo 37, Szczecin 70-313, Poland. tomasz.chady@zut.edu.pl.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Chady
authors.affiliation: Department of Nanosciences and Technology, School of Science and Humanities, Karunya University, Coimbatore, Tamilnadu 641114, India. cyrilraj@live.com.
authors.forename: Cyril Robinson Azariah
authors.initials: CR
authors.lastname: John Chelliah
keywords: concrete testing; eddy current testing; infrared thermography; microwave heating; multi frequency eddy current technique; rebar detection