Temperature distribution modeling of a welded joint where validation was performed by the use of thermographic images
Eduardo José Fernandes Rocha1; Tiago de Sousa Antonino2; Ricardo Artur Sanguinetti Ferreira1; José Maria Andrade Barbosa1; Pablo Batista Guimarães2; Yogendra Prasad Yadava1; Roberto de Araújo Alécio1; José Manoel de Sousa1; Paternak de Souza Barros1
1 UFPE; 2 IFPE
doi:10.20906/CPS/COB-2015-0726
Resumo
The aim of this work is to perform temperature distribution studies in an electric arc filling welding process by the application of a mathematical model which was validated with the aid of a heat measuring device operating in the infrared spectrum range. The numerical methodology was based on a commercial finite element analysis software for performing three-dimensional analysis of the heat involved in the filling process. The heat source motion was modeled based on Goldak's double ellipsoid and the subsequent volumetric energy distribution, which include the physicothermal properties of the material and the respective boundary conditions inherent in the system. The experimental field performed through the automated GMAW welding process in the flat 2G position, which consisted of a rectangular API 5L X80 steel panels of dimensions 150 x 80 x 7.5 mm and a 4 mm chamfer, provided the basis for feeding the computer data.
Palavras-chave: Numerical modeling; Infrared thermography; Temperature field; Welding; API 5L X80 steel