Chapters authored
Application of Taguchi Method in Optimization of Pulsed TIG Welding Process Parameter
Pulsed TIG welding is one of the most widely used welding processes in the metal manufacturing industry. In any fusion arc welding process, the bead width plays an important role in determining the welding strength and mechanical properties of the weld joint. This study present optimization of the pulsed TIG welding process parameter using Taguchi Philosophy. AISI 316/3136L austenite stainless steel 4mm is used for welding and for the establishment of the optimum combination of the process parameter and depending upon the functional requirement of the welded joint, the acceptable welded joint should have optimum bead width and minimum heat affected zone (HAZ) etc. An experiment was conducted using different welding condition and a mathematical model was constructed using the data collected from the experiment based on Taguchi L25 orthogonal array. Optimum parameter obtained for bead width is peak current 180 ampere, base current 100 ampere, pulse frequency 125Hz and pulse on time 40%.
Part of the book: Quality Control
Analysis and Optimization of Bead Geometry by Using Response Surface Methodology
Analysis of bead geometry is very important in product design and manufacturing. Defect-free products with reliability are the demanding parameter in the manufacturing Industry. In this study, we have analyzed and optimized bead geometry parameters such as height of reinforcement (HOR), depth of Heat Affected Zone (DOH), and width of Heat Affected Zone (WOH) by using Central Composite Design (CCD) of response surface methodology (RSM). In this study, peak current and pulse frequency are the most important process parameters for HOR and the optimum combination obtained are (160 A, 80 A, 100 Hz, and 45%) further HOR at this optimum was found to be 1.41 mm, which is close to 1.45 mm. Similarly, peak current and pulse frequency are the most important process parameter for WOH and the optimum combination obtained are (160 A, 80 A, 150 Hz, and 45%) further WOH at this optimum was found to be 1.32 mm, which is close to 1.37 mm. Again, similarly peak current and pulse frequency are the most important process parameter for DOH and the optimum combination obtained are (160 A, 80 A, 100 Hz, and 45%) further DOH at this optimum was found to be 1.26 mm which is close to 1.58 mm.
Part of the book: Response Surface Methodology