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Quantitative detection of contact failures in composites using infrared thermography and the reciprocity functional approach

Abreu, Luiz; Colaço, Marcelo J.; Orlande, Hélcio R. B.; Alves, Carlos J. S.

Proceedings of the 6th International Conference on Mechanics and Materials in Design, (Editors: J.F. Silva Gomes & S.A. Meguid), (2015), 1845-52

Composite materials are found in many engineering applications such as aircraft walls, pipes, nuclear reactors, cooling of electronic components and many others. The evaluation and detection of adhesion failures at the interface between the layers of these materials have great importance for these applications. This work deals with the quantitative detection of adhesion failures in a medium composed of two layers, by estimating the temperature difference at the interface between these layers. This temperature difference is obtained solving an inverse heat conduction problem with the reciprocity functional approach. Previous work of the authors provided detailed analysis using simulated temperature measurements. This paper applies these methodologies to a case where real measurements are used. The results show that it is possible to identify and quantify contact failures through the proposed methodology using real measurements.