: A solid state metal joining process known as Friction Stir Welding (FSW), is largely used to weld alloys of aluminium.
The influence of the various parameters associated with the process such as speed of rotation of the tool, speed of welding and
angle the tool makes with the horizontal surface of the workpiece or tilt angle on the weldability of AA7050 is studied in this
paper. The study was performed on VMC (i.e. Vertical Milling Machine and Universal Testing Machine was interrogated to find
the output parameters. A convincing result was achieved wherein the above factors mentioned are strongly influencing the weld
strength. Implementation of Taguchi method to optimize the results was conducted. ANOVA analysis revealed the amount of
contribution each factor have with the improvement in the weld strength. .Signal to Noise, ratio (S/N ratio)) gave the optimal
parameters which largely influenced the weldability.
Taguchi method validated the test results and showed that the performance.
