Abstract
The results of the investigation indicate the welding
current to be the most significant parameter controlling the weld
tensile strength as well as the nugget diameter. The contribution
of welding current holding time and pressure to tensile strength
are 61%, 29%, 4% respectively and the contribution of these
parameters to nugget diameter are 81%, 17%, 1.7% respectively.
Relationship graph have been plotted between tensile strength
and nugget diameter with parametric variations according to
orthogonal array