Welding shrinkage and distortion affect the shape, dimensional accuracy and the strength of the finished product. This work concerns the prediction of welding distortion in a pulsed metal inert gas welding (PMIGW) process. Six different types of radial basis function network models have been developed to predict the distortion of welded plates. Six process parameters, namely pulse voltage, back...

Due to the high strength weight ratio and ability form desired shape, AA2017 is extensively used in automobile industry. The join with other aluminum alloys capability respond heat treatment creates opportunities for engineers AA6061 blanks using friction stir welding. Controlling process parameters a challenge optimization of tool pin geometry, axial force, rotational speed, welding tilt angle...

A finite element scheme for simulation of welding residual stresses is presented in this paper. Detailed thermal and residual stress analyses for butt-welded and socket-welded pipes are performed using ANSYS and ABAQUS. The calculated distribution of axial stress and hoop stress at welded joint are validated against experimental results. Furthermore, residual stress relaxation under high amplit...

use of tailor-welded blanks (twbs) in production has significant advantages such as weight and cost reduction. however, their application requires processes that increase their poor formability in comparison to base materials. one of these procedures is the use of fluid pressure in sheet metal forming. in this paper hydro-mechanical deep drawing process of tailor-welded low carbon steel (st12) ...

This paper addresses the weld joint strength monitoring in pulsed metal inert gas welding (PMIGW) process. Response surface methodology is applied to perform welding experiments. A multilayer neural network model has been developed to predict the ultimate tensile stress (UTS) of welded plates. Six process parameters, namely pulse voltage, back-ground voltage, pulse duration, pulse frequency, wi...

The objective of this research is to develop an experimental-theoretical analysis about the 11 influence of the cooling medium and the geometry of the welding bead profile in fatigue life and 12 associated parameters with structural integrity of welded joints. A welded joint with cruciform 13 geometry is considered using SMAW, plates in structural steel ASTM A36 HR of 8 mm of 14 thickness and E...

Pressure vessels operating at elevated temperatures and pressures are made of creep resisting plate and welded from individual components using the MAG welding process. The paper proposed focuses on the occurrence of lack-of-fusion defects in MAG welded plate components of pressure vessels. Lack of fusion, which is a planar defect and is, therefore, difficult to detect by common NDT methods, ca...