Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Listado de Publicaciones
Todas estas publicaciones se ofrecen de forma gratuita y son de libre difusión. También puedes descargar las actas completas».
Sociedad Española de Integridad Estructural
Grupo Español de Fractura
Todas estas publicaciones se ofrecen de forma gratuita y son de libre difusión. También puedes descargar las actas completas».
L. P. Borrego F. V. Antunes J. D. Costa J. M. Ferreira
Anales de la Mecánica de la Fractura, nº 22
. 2005
. Pág. -
Ver (.pdf): 62
Resumen: Fatigue crack propagation tests in compact mixed-mode specimens were carried out for several stress intensity ratios of mode I and mode II, KI/KII, in AlMgSi1-T6 aluminium alloy with 3 mm thickness. The tests were performed in a standard servo-hydraulic machine. A linkage system was developed in order to permit the variation of the KI/KII ratio by changing the loading angle. Crack closure loads were obtained through the compliance technique. A finite element analysis was also done in order to obtain the KI and KII values for the different loading angles. Crack closure increases under mixed-mode loading conditions in comparison to mode-I loading due the friction between the crack tip surfaces. Moreover, the crack closure level increases with the KI/KII ratio decrease. Correlations of the equivalent values of the effective stress intensity factor with the crack growth rates are also performed.
Localización: Almagro
Departamento de Engenharia Mecânica, Instituto Superior de Engenharia de Coimbra, Instituto Politécnico de Coimbra, Portugal.
Departamento de Engenharia Mecânica, Faculdade de Ciências e Tecnologia da Universidade de Coimbra, Portugal.
Departamento de Engenharia Mecânica, Faculdade de Ciências e Tecnologia da Universidade de Coimbra, Portugal.
Departamento de Engenharia Mecânica, Faculdade de Ciências e Tecnologia da Universidade de Coimbra, Portugal.