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Proceedings Paper

Characterization of subsurface defects by means of thermography and 3D numerical model
Author(s): Ivanka Boras; Srecko Svaic
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Paper Abstract

The paper presents the method for determining the subsurface defects in material by means of active thermography and 3D numerical non-stationary heat conduction model. Determination of the subsurface defects by Thermal Non- Destructive Testing means the description of the defects dimensions and its location. The method is tested on the samples made of metal and composite materials having known subsurface defects. The results obtained are discussed from the point of view of influence of the neighboring defects on the current contrast curve and possibilities of predicting the behavior of the composite material by estimation of their thermal properties. The software developed enables the calculation of the temperature distribution through the sample versus time and location of the defect by means of inverse method involving experimentally obtained thermogram.

Paper Details

Date Published: 23 March 2001
PDF: 8 pages
Proc. SPIE 4360, Thermosense XXIII, (23 March 2001); doi: 10.1117/12.421034
Show Author Affiliations
Ivanka Boras, Univ. of Zagreb (Croatia)
Srecko Svaic, Univ. of Zagreb (Croatia)

Published in SPIE Proceedings Vol. 4360:
Thermosense XXIII
Andres E. Rozlosnik; Ralph B. Dinwiddie, Editor(s)

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