FRACTURE TOUGHNESS ANALYSIS OF ASTM A36 STEEL WELDED JOINTS: THE CRITICAL ROLE OF STRESS CONCENTRATORS. International Seven Journal of Multidisciplinary, [S. l.], v. 5, n. 2, p. e9588, 2026. DOI: 10.56238/isevmjv5n2-009. Disponível em: https://sevenpubl.com.br/ISJM/article/view/9588. Acesso em: 3 apr. 2026.