Abstract
Transportable equipment for on-site thermal nondestructive testing is described. The equipment is constructed from two separate units: a hand-held infrared line scanner and a remote unit containing all the necessary control devices. The sample surface is heated by manually scanning a line source over the surface and the resulting surface temperature rise is simultaneously measured with the line scanner. The heating line is generated either by a line-focused laser beam or by a radio frequency induction coil. The obtained surface temperature distribution of the monitored area is presented as a pseudo-color image. The feasibility of the method is demonstrated with a carbon-glass fiber composite sample.
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Varis, J., Lehtiniemi, R., Hartikainen, J. et al. Transportable infrared line scanner based equipment for thermal nondestructive testing. Res Nondestr Eval 6, 85–97 (1994). https://doi.org/10.1007/BF02538762
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DOI: https://doi.org/10.1007/BF02538762