Resumo

DIAZ-CEDRE, Eduardo M. et al. Causes of welded joint failures of a piping system support. Min. Geol. [online]. 2023, vol.39, n.3, pp. 207-219.  Epub 30-Set-2023. ISSN 1993-8012.

Failures in welded joints constitute a challenge that requires a scientific approach due to its phenomenological essence. This work determines the causes of failure in welded joints of a piping system, which were carried out with the SMAW process. Visual inspection, tension tests of the base material, chemical analysis by optical emission spectrometry as well as macrograph and metallography of the welded joint were carried out to a sample extracted from the damaged area using a cooled disc. In conclusion, we can say that the cause of failure has its origin in the poor procedure applied when welding, althoughother factors such as mechanical fatigue or an inappropriate design could also have been present.

Palavras-chave : failure; cracking; carbon steels; SMAW process.

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