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The finite element method and the InfraredThermography principle applied to the control ofhomogeneity between a weld and the structure toweld

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7th African Conference on Non Destructive Testing ACNDT 2016 & the 5th International Conference on NDT and Materials Industry and Alloys (IC-WNDT-MI)

2016

The finite element method and the Infrared

Thermography principle applied to the control of homogeneity between a weld and the structure to

weld

A. EDDAZI, S. BELATTAR

Abstract : The main purpose of this work is to investigate by a numerical method the effect of the thermophysical nature of solder, used to connect two pipe elements, on the distribution of the surface temperature of a considered structure. The analysis of the obtained thermograms can reveal the thermophysical quality of the used solder. The finite element method is used to calculate the temperature distribution on the welded region. The thermal response of the structure, which is subjected to a thermal flux step, is presented and analyzed. The simulations results are presented in the form of surface thermographic images, to show the contrast in temperature due to the presence of the weld zone.To better quantify the contrast induced by the presence of welding on temperature distribution we present the spatial variation of the temperature along a surface axis of the pipe.

Keywords : thermographical images, finite element, Infrared thermography, surface temperature, Pipe, welding

Centre de Recherche en Technologies Industrielles - CRTI - www.crti.dz

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