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Flash pulse phase thermography for paint thickness determination

Citace:
MUZIKA, L. ., ŠVANTNER, M. . Flash pulse phase thermography for paint thickness determination. Plzeň, 2019.
Druh: PŘEDNÁŠKA, POSTER
Jazyk publikace: eng
Anglický název: Flash pulse phase thermography for paint thickness determination
Rok vydání: 2019
Místo konání: Plzeň
Autoři: Ing. Lukáš Muzika , Ing. Michal Švantner Ph.D.
Abstrakt EN: The contribution describes a fast contactless measurement of a paint thickness non-uniformity using flash pulse thermography. Specimens sprayed by a paint were thermally excited by a flash lamp and temperature responses were recorded by an infrared camera. The recorded sequences were post-processed with Fast Fourier Transform to obtain phase angles. Differences in the resulting images showed phase differences which corresponded to a paint thickness non-uniformity. Furthermore, the phases were correlated with the thickness by means of calibration curve so that the paint thickness could be determined with flash pulse phase thermography measurement. The method showed a promising potential in the contactless evaluation of the paint thickness. Average error of the thickness determination was less than 10 % for samples with paint thickness from 41 to 74 ?m on AISI 304 substrate. Advantages, disadvantages and limitations of described method were discussed.
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