Numerical Simulation and Experimental Investigation of Damage Behaviour on Al6061 Laser Welded Joints

H.Y. Tu; Siegfried Schmauder; Ulrich Weber

doi:10.4028/www.scientific.net/KEM.627.105

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 627Numerical Simulation and Experimental...

Numerical Simulation and Experimental Investigation of Damage Behaviour on Al6061 Laser Welded Joints

Abstract:

The ductile damage behaviour of an aluminium laser welded joint is studied experimentally and numerically. The dimensions of the weld regions are fixed by hardness tests. Fracture toughness tests of Al6061 laser beam welded joints were performed with the compact tension (C(T)) specimens. The Rousselier model is used and the parameters: initial void volume fraction (f0) and average void distance (l_c) are identified by metallographic investigations, for the BM, the FZ and the HAZ. Numerical calibration of the Rousselier parameters is performed on notched round specimens. The same Rousselier parameters are used to predict force vs. Crack Opening Displacement (COD) of C(T) specimens.

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Key Engineering Materials (Volume 627)

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105-108

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https://doi.org/10.4028/www.scientific.net/KEM.627.105

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September 2014

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H.Y. Tu*, Siegfried Schmauder, Ulrich Weber

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