Journal
NONDESTRUCTIVE TESTING AND EVALUATION
Volume 28, Issue 1, Pages 28-43Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10589759.2012.694882
Keywords
time-domain THz imaging; system identification; defects detection algorithms; basalt fibre-reinforced composite materials; anticorrosion coatings
Funding
- State Committee for Scientific Research, Poland [N N510 538039]
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Modern industry makes more and more extensive use of various composite materials. In this paper, for the purposes of various composite materials evaluation, the terahertz imaging method is presented. Basalt fibre-reinforced composites and polymeric anticorrosion coatings are considered. Basalt fibre composites are the innovative materials that are being increasingly used in modern industry. The paper also briefly introduces a specific type of complex coating of steel applied in the industry (e.g. oil or chemical). Two methods of defects detection in the mentioned structures are presented. The first method is based on a system identification, whereas the second one is on the estimation of time-domain signal parameters. Finally, the results achieved during terahertz inspection of coatings are compared with those obtained using active thermography.
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