Results from a computational model of arc welding, in which the arc plasma, workpiece and electrode are treated self-consistently, are presented. It is demonstrated through three examples (the effect of shielding gas composition, metal vapour and electrode shape on the weld pool) that reliable prediction of weld pool depth and geometry requires that the arc plasma is included in the computation...

Abstract Wire-arc additive manufacturing (WAAM) provides an alternative for the production of various metal products needed in medium to large batch sizes due its high deposition rates. However, cyclic heat input WAAM may cause local overheating. To avoid adverse effects on performance part, interlayer dwelling and active cooling are used, but these measures increase process time. Alternatively...

Visual sensing technology is widely used in welding practices because visual devices are decreasing in price, increasing in reliability and improving in image processing hardware and software. As the most studied welding sensor, CCD(Charge Coupled Device) is more suitable for quality control of welding process than other means of sensing devices because it can obtain both two dimensional and th...

The application of press hardening steels is spreading from automobiles, where crashworthiness demands are critical, to other segments, such as the agricultural and road transport industries. However, operational conditions which equipment exposed requires heavier sheet gages adapted joining processes. In this context, fatigue recognized critical failure mode. present article describes procedur...

Vertical oscillation arc welding for narrow gap gas metal (NG-GMAW) has a relatively simple structure, and it is widely used in all-position pipeline field welding. However, some shortcomings, such as incomplete fusion defects on the sidewall interlayer. Aiming at resolving these mathematical model proposed to obtain appropriate parameters different positions. In this model, response surface me...

The reconstruction of the geometry weld-deposited materials plays an important role in control torch path GMAW. This technique, which is classified as a direct energy deposition technology, experiencing new emergence due to its use welding and additive manufacturing. Usually, determined by computerised fabrication tools, but these software tools do not consider geometrical changes along case du...

Visual sensing technology is widely used in welding practices because visual devices are decreasing in price, increasing in reliability and improving in image processing hardware and software. As the most studied welding sensor, CCD(Charge Coupled Device) is more suitable for quality control of welding process than other means of sensing devices because it can obtain both two dimensional and th...