The purpose of this study was to investigate the difference between tungsten inert gas (TIG) welding of austenitic stainless steel assisted by microparticle oxides and that assisted by nanoparticle oxides. SiO₂ and Al₂O₃ were used to investigate the effects of the thermal stability and the particle size of the activated compounds on the surface appearance, geometric shape, angular distortion, d...

Laser beam welding has wide acceptability due to least welding distortion, low labour costs and convenient operation. However, laser welding for dissimilar titanium and aluminium alloys is a new area which is having wider applications in aerospace, aircraft, automotive, electronics and other industries. The present study is concerned with welding parameters namely laser power, welding speed, fo...

The use of shielding gases in laser beam welding is particular interest for materials interacting with ambient oxygen, e.g., copper, titanium or high-alloy steels. These are often processed by remote where short welds (e.g., up to 40 mm seam length) commonly used. Such setups prevent gas nozzles from being carried along on the optics due scanner application and a small area needs be served loca...

Considerable research has been carried out to study the laser welding of magnesium alloys. However, studies are mainly devoted butt welding, and there limited information in published literature concerning bead-on-plate AZ91D, even though is required for repair cast AZ91D parts with surface defects. In present investigation, cracking weld metal was observed when an alloy welded using method. Th...

Particle swarm optimization technique has been used for tuning of neural networks utilized for carrying out both forward and reverse mappings of metal inert gas (MIG) welding process. Four approaches have been developed and their performances are compared to solve the said problems. The first and second approaches deal with tuning of multi-layer feed-forward neural network and radial basis func...