Analysis of the velocity field in the shear layer in FSW: experimental and numerical modelling
- Schmidt H. and
- Hattel J.
- Schmidt H. and
- Hattel J.
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The velocity field in the shear layer surrounding the tool/matrix interface in friction stir welding (FSW) was used to characterise material flow and was investigated by x-ray/computational tomography (CT) marker material experiments as well as analytical and numerical models. The system studied comprised an aluminium alloy matrix with a dispersed marker material (in the form of a thin copper foil). 2D and 3D CT techniques were employed to study flow fields and numerical CFD (computational fluid dynamics) modelling was used to determine velocity profiles. Characteristic flow zones (rotation layer, transition layer and deflection zone) were defined and the average speed through the shear layer was estimated for welds with transverse and longitudinal marker material.
6th International Symposium, 10-13 Oct 2006, Session 2B: Modelling I, Paper 03
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