A CRITICALITY STUDY BY DESIGN FAILURE MODE AND EFFECT ANALYSIS (FMEA) PROCEDURE IN LINCOLN V350 PRO WELDING MACHINE

Failure Modes and Effects Analysis (FMEA) is methodology for analyzing potential reliability problems early in the development cycle where it is easier to take actions to overcome these issues, thereby enhancing reliability through design. A process or a design should be analyzed first before it is implemented and also before operating a machine the failure modes and effect must be analyzed critically. In this work, design failure mode and effect analysis is done on LINCOLN V 350 PRO welding machine. A literature survey and a series of welding with different sample pieces are done and the potential failures modes of the machine are categorized based on FMEA, risk priority numbers are assigned to each failure mode by multiplying the ratings of occurrence, severity and detection as per FMEA methodology. Finally the most risky failure in the welding machine according to the RPM numbers is found and the cause and effects along with the preventive measures are tabulated for all the failure modes. This work serves as a failure prevention guide for those who perform the welding operation towards an effective weld