DefinePK

Abstract

One of the benefits of fiber laser welding technology is that the amount of heat generated at the weld position is very less. This method is said to offer a great advantage for today s modern manufacturing needs. The input parameters involved in the laser welding process play an important role in deciding the quality of the weld joint. The various properties that can define the quality of the weld are mechanical aspects, the geometry of the weld bead and distortion. In this research work, the geometry of the weld bead such as ultimate tensile strength, weld bead width, depth of penetration of the laser welded butt joints of mild steel 2062 sheets are examined. With the help of design expert software, the Response Surface Methodology [RSM] was used in developing the empirical relationships relating the process parameters such as laser power, traveling speed and focal position with the output responses such as ultimate tensile strength, depth of penetration and weld bead width. The acceptability of the developed mathematical models is validated with the help of analysis of variance using design expert software. The investigation was further carried out using the desirability approach in achieving an optimal welding combination, such that, it would maximize the ultimate tensile strength, depth of penetration, and minimize the weld bead width.