Design of Experiment (DOE) is a structured and organized method to determine relationships between factors affecting and output of a process. This thesis shows how process optimization can be achieved in two methods; A first method using Taguchi experimental design methodology process control in order to confirm the three specified factors that are critical to the stud arc welding operation. The design plan is based on the use of orthogonal arrays introduced by Taguchi. A second method of optimization is by applying the mathematical exercise of Non-linear "Artificial Neural Network". The...