Simulation of fatigue crack propagation in friction stir welds under flight loading conditions
Ghidini, Thomaso and Polese, Claudia and Dalle Donne, Claudio (2006) Simulation of fatigue crack propagation in friction stir welds under flight loading conditions. Materialprüfung, 48 (7-8), pp. 370-375. Carl Hanser Verlag, München. ISSN 0025-5300.
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Since Friction Stir Welding has been identified as a key technology for primary aerospace structures, fatigue crack growth testing and and modelling is required. However, there is still a complete lack of information regarding the fatigue crack propagation in friction stir welds under variable amplitude loading and flight loading conditions. Experimental investigations have been performed on centre cracked 4 mm thick AA2024-T3 base metal and FSW specimens: regarding the FSW samples, the crack was placed 5 mm out of the weld centre, in the most critical part of the joint: the coupons have been tested under simple variable amplitude load sequences, and under a standardized flight-simulation load history, Falstaff. The fatigue crack propagation was then predicted using widespread aerospace fracture mechanics software packages. Interaction effects and internal residual stresses were firstly separately simulated and than combined in order to evaluate the ability to predict the fatigue crack propagation on FSW welded structures under service loading conditions.
|Title:||Simulation of fatigue crack propagation in friction stir welds under flight loading conditions|
|Journal or Publication Title:||Materialprüfung|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 370-375|
|Publisher:||Carl Hanser Verlag, München|
|Keywords:||Residual stresses, Fatigue crack propagation, Friction Stir Welding, CA, VA|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L AR - Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Structures & Materials|
|Institutes and Institutions:||Institute of Materials Research > Mechanical Testing of Materials|
|Deposited By:||Dr.-Ing. Hubert Döker|
|Deposited On:||12 Dec 2006|
|Last Modified:||27 Apr 2009 13:18|
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