Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Publicaciones del 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».

CRACK GROWTH BEHAVIOUR OF 7050 ALUMINIUM ALLOY

L.P. Borrego  J.D. Costa  J.A.M. Ferreira      

Anales de la Mecánica de la Fractura, nº 32 . 2015 . Pág. 111 -116
Ver (.pdf): Anales32-016

Resumen: Aluminium alloys of the 7000 series are largely used in aeronautical structural applications. In this work a fatigue crack propagation study was done in 7050 aluminium alloy under constant load amplitudes. The tests were carried out using MT specimens in a servohydraulic machine at a frequency of 25 Hz. For the constant amplitude tests three different stress ratios were analysed: R= 0.05, 0.3 and 0.5. Crack closure was monitored in all tests by the compliance technique using a pin microgauge. In this context, the accuracy of the all process used to obtain the crack closure level was evaluated. At the same time, the sensitivity of pin gauge location with respect to the crack tip was also analysed. The crack opening loads were derived from the load-crack opening displacement records after mathematics derivation and used to calculate Dkeff values from which the da/dN- Dkeff curve is obtained. The crack closure parameter U was obtained and related with DK and the stress ratio.

LocalizaciónZamora

University of Coimbra, Rua Luís Reis Santos, 3030-788, Coimbra, Portugal
University of Coimbra, Rua Luís Reis Santos, 3030-788, Coimbra, Portugal
University of Coimbra, Rua Luís Reis Santos, 3030-788, Coimbra, Portugal




Enlaces directos

Últimas noticias

Contacto

Información general
info@gef.es

Administración
secretaria@gef.es

Cuotas y recibos
socios@gef.es