Robotic welding processes are widely used in manufacturing and especially in the automotive industry. Quality problems in the automation of this process became a leading cause of attention by manufacturers and researchers interested in improving these processes. Within the wide range of automated welding processes that exist in the industry, the most used is the Gas Metal Arc Welding Process (G...

Fusion welding of heat treatable aluminum alloys leads to a significant loss of strength in the heat affected zone (HAZ) due to overaging. This work was aimed to improve the mechanical properties of Al-6061 welds. Plates of 6 mm in thickness were solutionised at 530◦C for 1 h followed by water quenching and aging at 160◦C for times between 13 to 19 hours. Welding was performed with the gas meta...

The profile of the welding bead changes with process parameters during gas metal arc (GMAW) process, top reinforcement disappears, and penetration becomes sunken when excessive heat input is applied. However, little research work specially planned to cope studying under these circumstances. A systematic study relationships among variables geometric features as well optimization quality presente...

Power input to the arc in gas metal arc welding controls both the metal transfer process and the base-plate heating process. It would be advantageous to decouple these processes. Methods to achieve this decoupling are discussed. Pulsed-power welding is widely used, but only decoupling can be achieved. More complete decoupling may be obtained by using independent power inputs to the system. Seve...

Gas Metal Arc Welding (GMAW) process was analyzed by combining a finite element thermomechanical model for temperature and stress with solidification model. Model prediction was compared with experimental data in order to validate the model. The effects of welding process parameters on these welding fields were analyzed and reported. The effort to correlate the residual stress and solidificatio...

Fillet welds are one of the most commonly used weld joints but one of the most difficult to weld consistently. This paper presents a technique using Artificial Neural Networks (ANN) to identify the key Gas Metal Arc Welding (GMAW) fillet weld parameters and interactions that impact on the resultant geometry, when using a metal cored wire. The input parameters to the model were current, voltage,...

Merchant ships are generally built by joining steels with various welding methods. When the methods used in shipyards examined, it is seen that gas metal arc (GMAW), submerged (SAW), covered electrode and tungsten inert (TIG) come to fore. In assembly of ship hull sheets, GMAW SAW preferred. this sense, extremely important characterize mechanical properties weld zone after shipbuilding steel jo...

To upgrade the performance of welded joints the various improvement methods are used. Shot peening is one of the improvement method used to strengthen the properties of welded joints. GMAW process is very well suited for welding of AISI 304 austenitic stainless steels. Regression analysis is the statistical modeling technique, and it is suitable for the majority of predicting problems. It is va...