Abstract: - Welding is the metal joining process in which twoor more metals having the same material or different can be joinedby heating to a plastic state. In this thesis, the welding speed andgeometry to find out tensile and impact strength in the case of buttweld joint will be done. For V-groove geometry different modelsof the plate with various included angles from 60°, 68°and 75 willbe made on structural steel A633 Grade E. Currently, differentwelding speeds are used in precision welding applications such asnuclear reactor pressure vessels, boilers, etc. where weldingaccuracy, as well as quality with strength, is an importantparameter. So in this project experimentation will be done ondifferent welding speeds such as 4 mm/sec, 8 mm/sec, and 12mm/sec to analyze Tensile strength, hardness and verifying thequality of weld using phased array ultrasonic testing. The mainobjective of this study is to investigate and evaluate the effect ofwelding speed and groove angle at different input parameters onoutput response variables i.e., tensile strength and hardness.Experimentation was planned as per Taguchi’s L9 Orthogonalarray. The output response variables tensile strength and hardnesswere calculated and optimized using Single variable Optimization(Taguchi) techniques. The ANOVA was also carried out to knowthe percentage contribution of process parameters.Keywords: - Phased array ultrasonic testing, tensile test, hardnesstest, taguchi analysis