PROPAGA<,ÁO DE FENDAS SUPERFICIAIS NO AÇO A5l5

J. Salgueiro Marques  J. A. Martins Ferreira  CMoura Branco      

Anales de la Mecánica de la Fractura, nº 13 . 1996 . Pág. 346 -350
Ver (.pdf): Anales13-058

Resumen: The steel A515 is currently used in welded constrution. For these structures fatigue cracks can initiate at the weld toe and propagate with semielliptical front shap. This paper presents results of a research about fatigue of surface crack growth. Two stress ratio were studied: O and 0.3. For each of these condictions the da/dN-AK, da/dN-AKer curves and the crack clousure were obtained. The fracture mechanisms were studied by means the scanning electronic microscopy.

LocalizaciónLuso, Portugal

EST,Instituto Politécnico de Viseu
Departamento de Engenharia Mecánica, Uníversidade de Coimbra
IDMEC,IST,Universidade Técnica de Lisboa