Failure Analysis of A Welded Mild Steel Shaft Under Tensile Loading Condition

Abstract Welding is a process of permanently joining two or more parts by the application of heat and (or) pressure and is the widely used process in fabrication, maintenance and repairs of parts and structures. Almost 70 percent of all manufactured products are made with the skills of welders. In the field of Mechanical Engineering the modern welding trends and advanced products are made with the skills of welders. In the field of Mechanical Engineering the modern welding trends and advanced welding process has been contributing toward advancement, a study has been given greater priority of failures analysis of welding joints and various structural and technical aspects have an impact on fracture characteristics of welded joints. The welded joints and various structural aspects have an impact on fracture characteristics of welded joints. The objectives of this work were to investigate the tensile behavior of welded mild steel shaft to analyzing the failure analysis of welded joints for that purpose step joint, lap joint, double v joint, double v pin joint and double j joint specimens of standard size were developed. Each specimen was machined, welded and finished at its center. A tensile test was performed on all the welded shaft of mild steel. Tensile test has been carried out by Universal Testing Machine, after testing the specimens, it was found that the welded shaft with Lap Joints bears the Maximum Tensile Strength.