As a guest user you are not logged in or recognized by your IP address. You have
access to the Front Matter, Abstracts, Author Index, Subject Index and the full
text of Open Access publications.
Terahertz radiation is sensitive to refractive index variations and is strongly reflected by conducting objects, thus it is an effective tool in nondestructive evaluation of protective coatings of steel. In this work a composite material consisting of a paint layer, polymeric layer, ceramic layer and a steel plate in its interior was examined. Typical applications are: storage tanks for petroleum, diesel, aviation fuel, diesel, crude oil, salt water, gasoline, alcohol, process and transport of chemical products, platforms and offshore structures, electrolytic cells, anodizing lines, stations water and wastewater treatment, water tanks in the chemical, petrochemical and chlorine-alkali plants. Evaluated test specimen contains manufacturing flaws in the metal/ceramic layer interface. Because of multilayered structure of the coatings, time domain measurements with very short THz pulse duration ( 20 ps) were utilized in presented experiments. Defects were detected by reflection imaging based on pulsed terahertz TDS (Time Domain Spectroscopy). Selected THz B-scans in case of non-defected and defected area are shown. Dedicated defects detection algorithm is proposed and verified. Results achieved during terahertz inspection are compared with those obtained using active thermography.
This website uses cookies
We use cookies to provide you with the best possible experience. They also allow us to analyze user behavior in order to constantly improve the website for you. Info about the privacy policy of IOS Press.
This website uses cookies
We use cookies to provide you with the best possible experience. They also allow us to analyze user behavior in order to constantly improve the website for you. Info about the privacy policy of IOS Press.