Investigation of the material flow during friction stir welding of EN-AW 5754 by multiaxial high resolution process force analysis
- Gerken J.A. ,
- Gratzel M. and
- Bergmann J.P.
- Gerken J.A. ,
- Gratzel M. and
- Bergmann J.P.
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In order to study the relationship between material flow and the development of highly variant process forces during friction stir welding (FSW), a high sampling rate triaxial force measurement device and a high speed camera were employed to monitor FSW experiments conducted on an AW 5754 aluminium alloy sheet (thickness 5 mm). Bead-on-plate welding was performed at a feed speed of 1000 mm/min, rotational speed of 1500 rpm and axial force of 9 kN. The experimental set up included a force controlled FSW spindle mounted on a Kuka KR500 MT heavy duty robot, a Kistler 9139AA dynamometer to measure forces and an Optronis CR300x2 M/C high-speed camera. Results showed that material flow was synchronous to specific force development during each rotation. A theory of pressure variance below the shoulder was proposed to explain the behaviour.
12th International Symposium, 26-28 Jun 2018, Session 4A: FSW Tools, Paper 03
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