Welded joints are used in various mechanical and civil structures. The welding process involves joining of two materials (through coalescence). The strength of welded joint is significantly affected by heat effected zone, strength of material. The fatigue life of welded joint is significantly affected by repetitive cyclic loadings. The current research reviews the existing work conducted on improving the strength of weld joint using both experimental and numerical techniques. The effect of temperature, filler material and operating conditions is thoroughly investigated by various scholars.

Keywords : FEA, Weld joint, Optimization.