A Review on Welding Failure in Fly Ash Brick Machine

Welding is a process of joining metals by application of heat with or without application of pressure and addition of filler material. All mechanical structural assemblies have to be joined in some way either by bolting, welding or riveting. Out of the above welding is widely used. Also there is various type of welding i.e. Arc welding, Gas welding, Resistance welds, Energy Beam Welding and Solid State welding. But out of the above Shielded Metal Arc welding is extensively used in fabrication process in industry. In Arc welding the source of heat is electric are. Since welding process relies intensively on localised heat input, it results in generation of undesired residual stress and deformation in welded structures. Since residual stress has a strong influence on welded deformation, fatigue stress, fracture toughness and buckling so many research has been made regarding the effect of process parameters of electric arc on formation of residual stress. This paper aims to study various methods for determining residual stress which are proposed by various research papers. Finite element analysis will be used for finding out residual stress in Arc welding. In this paper an effort is made to review the investigation that have been made to find out the impact of residual stress on fatigue life on various types of welded joint in Arc welding.