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Volume 48, Issue 7-8 (July)

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Tommaso Ghidini, Claudia Polese, Agostino Lanciotti, and Claudio Dalle Donne (20 propagation in friction stir welds under flight loading conditions. Materials Testing: V doi: 10.3139/120.100746

Simulations of fatigue crack propagation in friction loading conditions* Tommaso Ghidini1, Claudia Polese2, Agostino Lanciotti2 and Claudio Dalle Do 1

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*Work performed during the staying of the authors at the Institute of Materials Center, Cologne Germany. This contribution was already published in German and Fatigue. Tommaso Ghidini was born in Fidenza, Italy, in 1974. He received his M. Sc. D from the Parma University in 2000. He worked at the German Aerospace Cent Materials Research. His work was focused on fatigue, fracture mechanics and and not-welded structures. From June 2005 he works with Airbus Germany at Tolerance Department. In 2006 Mr. Ghidini received a Ph. D. in Engineering M University. Claudia Polese was born in Cecina, Italy, in 1974. She received her M. Sc. De from the Pisa University in 2001. She's now working in research activities rega aeropace applications at the Department of Aerospace Engineering of the Univ Agostino Lanciotti was born in Spoleto in 1949. He's full Professor of Structura Department of Aerospace Engineering of the University of Pisa. Claudio Dalle Donne was born in Karlsruhe, Germany, in 1965. He received hi from the Karlsruhe University in 1996. He worked at the German Aerospace C Materials Research and was responsible for the research projects on fatigue a on friction stir welding. Since 2004 Dr. Dalle Donne has been Senior Manager Corporate Research Center in Germany.

Abstract Since Friction Stir Welding has been identified as a key technology for primary aero

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growth testing and modelling is required. However, there is still a complete lack of i crack propagation in friction stir welds under variable amplitude loading and flight lo investigations have been performed on centre cracked 4 mm thick AA2024-T3 bas regarding the FSW samples, the crack was placed 5 mm out of the weld centre, in the coupons have been tested under simple variable amplitude load sequences, an simulation load history, Falstaff. The fatigue crack propagation was then predicted fracture mechanics software packages. Interaction effects and internal residual stre simulated and than combined in order to evaluate the ability to predict the fatigue c structures under service loading conditions.

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