Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Sociedad Española de Integridad Estructural
Grupo Español de Fractura

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FATIGUE ANALYSIS IN AlMgSi WELDMENTS

J. A. M. Pinho da Cruz  J. D. M. Costa  J. A. M. Ferreira      

Anales de la Mecánica de la Fractura, nº 18 . 2001 . Pág. -
Ver (.pdf): 7017IMP

Resumen: This paper is concerned with the fatigue behaviour of T6 heat-treated AlMgSi1 aluminium alloy weldments. The fatigue tests were carried out using two types of welded joint: T and single lap. The main objective of this research was to study the efficiency of fatigue life improvement techniques, such as post-weld heat treatment and weld toe’s burr dressing, for thin joints manufactured in a 6000 series aluminium alloy. A fatigue strength improvement was obtained with both the post-weld heat treatment and the burr dressing, being this fact discussed for both geometries. Finally, a single lap joint series was tested under bloc variable amplitude loading and the correspondent experimental results were modelled with the Miner’s rule. A good agreement was verified between these results and the S-N curve obtained for constant amplitude loading.

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University of Coimbra Department of Mechanical Engineering Pólo II da Universidade de Coimbra, 3030 Coimbra, Portugal
University of Coimbra Department of Mechanical Engineering Pólo II da Universidade de Coimbra, 3030 Coimbra, Portugal
University of Coimbra Department of Mechanical Engineering Pólo II da Universidade de Coimbra, 3030 Coimbra, Portugal




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