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Multiple-site damage in riveted lap-joints: experimental simulation and finite element prediction
The multiple-site damage (MSD) phenomenon is discussed, and exemplified by the behaviour of riveted lap-joint specimens of aluminium alloy 2024-T3 alclad. The tests performed, on which the paper is based, are part of the contribution of IDMEC to a project on the fatigue behaviour of ageing aeronautical structures - the BRITE-EURAM project 'SMAAC', partially funded by the European Union. The study involves fatigue testing under constant amplitude loading of 1.6-mm-thick riveted lap-joints, and includes examination of the specimens during and subsequent to testing (post-mortem analysis of the fracture surface in a scanning electron microscope) in order to determine the time of occurrence, location and extent of fatigue damage. Crack growth rates are determined from periodic crack length measurements with a travelling microscope. Stress measurements are made using extensometry and the SPATE infrared technique to determine loading distribution of the lap-joints and redistribution due to cracking of fastener holes. Data on the initiation and growth of cracks and on residual static strength are used to assess the predictive model based on the finite element method.
Multiple-site damage in riveted lap-joints: experimental simulation and finite element prediction
The multiple-site damage (MSD) phenomenon is discussed, and exemplified by the behaviour of riveted lap-joint specimens of aluminium alloy 2024-T3 alclad. The tests performed, on which the paper is based, are part of the contribution of IDMEC to a project on the fatigue behaviour of ageing aeronautical structures - the BRITE-EURAM project 'SMAAC', partially funded by the European Union. The study involves fatigue testing under constant amplitude loading of 1.6-mm-thick riveted lap-joints, and includes examination of the specimens during and subsequent to testing (post-mortem analysis of the fracture surface in a scanning electron microscope) in order to determine the time of occurrence, location and extent of fatigue damage. Crack growth rates are determined from periodic crack length measurements with a travelling microscope. Stress measurements are made using extensometry and the SPATE infrared technique to determine loading distribution of the lap-joints and redistribution due to cracking of fastener holes. Data on the initiation and growth of cracks and on residual static strength are used to assess the predictive model based on the finite element method.
Multiple-site damage in riveted lap-joints: experimental simulation and finite element prediction
Silva, L.F.M. (Autor:in) / Goncalves, J.P.M. (Autor:in) / Oliveira, F.M.F. (Autor:in) / De Castro, P.M.S.T. (Autor:in)
International Journal of Fatigue ; 22 ; 319-338
2000
20 Seiten, 30 Quellen
Aufsatz (Zeitschrift)
Englisch
Multiple-site damage in riveted lap-joints: experimental simulation and finite element prediction
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