Studies and Research on the Visual Inspection of Welded Joints

Elena Valentina Stoian; Maria Cristiana Enescu; Dan Ungureanu; Ivona Camelia Petre; Adrian Picu

doi:10.2478/bsmm-2026-0002

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Studies and Research on the Visual Inspection of Welded Joints

Scientific Bulletin of Valahia University - Materials and Mechanics

Volume 22 (2026): Issue 26 (April 2026)

By: Elena Valentina Stoian, Maria Cristiana Enescu, Dan Ungureanu, Ivona Camelia Petre and Adrian Picu

Open Access

|May 2026

Abstract

The purpose of this paper is to analyse the application of the visual testing (VT) method in assessing the quality of welds made using MIG-MAG (Metal Inert/Active Gas) and shielded metal arc welding (SMAW) processes, according to the standard SR EN ISO 5817, level B, which represents the most demanding criterion for the acceptance of weld defects. Welding is known to be the fusion of two parts or materials made of metal, metal alloys or polymers. The operation takes place at high temperatures, with or without added material (fusion welding), and the surface layers of atoms are activated in this way, through a controlled energy input. The objective of this paper is to highlight the main visually evident defects, to discuss the possibility of discontinuities developing in welded joints and their acceptable level according to the current standards.

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Articles in this issue

DOI: https://doi.org/10.2478/bsmm-2026-0002 | Journal eISSN: 2537-3161 | Journal ISSN: 1844-1076

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Language: English

Page range: 12 - 17

Published on: May 12, 2026

Published by: Valahia University of Targoviste

In partnership with: Paradigm Publishing Services

Publication frequency: 2 issues per year

Keywords:

visual testing,

MIG-MAG welding processes,

welding defects

Related subjects:

Engineering,

Mechanical engineering,

Fundamentals of mechanical engineering,

Thermodynamics,

Bioengineering and biomedical engineering,

Biomaterials

© 2026 Elena Valentina Stoian, Maria Cristiana Enescu, Dan Ungureanu, Ivona Camelia Petre, Adrian Picu, published by Valahia University of Targoviste
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 22 (2026): Issue 26 (April 2026)