Numerous industrial applications, particularly those in the transport industry, require joining of dissimilar materials which offers considerable benefits terms low cost, design flexibility, and weight reduction for overall structures. The problems associated with conventional fusion welding processes have stimulated researchers recent years to develop new methods are difficult join. Friction s...

Undercutting is a fusion welding defect that appears as groove at the weld metal's toe. An undercut discontinuity forms when welding, particularly current applied an extremely rapid rate. It decreases static and fatigue strength of produces stress concentration zone. The height reinforcement, bead's contact angle, undercut's breadth, depth, length, root radius, well other factors, affect factor...

Magnetically impelled arc butt (MIAB) welding is a solid-state technique of that utilizes the heating effect high-speed rotating for formation weld. The process exhibits lower time and power consumption compared to conventional processes tube–tube joining. However, available research reports on MIAB Mild Steel (MS)1018 are still inadequate lack details required extending applications this proce...

The fatigue resistance of welded connections made high strength steel (HSS) is one the most important topics for application HSS in construction sector. One challenging issues how to predict life structures with complex geometry based on test results from relatively simple coupon specimens. However, there are generally pre-existing residual stresses specimens during tests, and these vary greatl...

Precipitation hardening aluminium alloy sheets AA2017-T4 are welded by FSW on a conventional tool. A macrograph of the cross section butt-welded joint shows classical zones for such welding, namely nugget zone, thermo-mechanically affected zone and heat zone. Scanning Electron Microscopy displays grain refining re-formation precipitates in Micro-hardness measurements cross-section perpendicular...

Laser–arc hybrid welding (LAHW) is an advanced method that combines arc and laser can achieve deep penetration the reduction of deformation compared with conventional welding. As other techniques, it common to target flat position (PA) as position. However, expansion applicable positions enables application high-quality welded joints fabricated by LAHW many in large steel structures. This study...

Received: 17/08/2013 Abstract This paper was aimed to report the 3D finite element analysis simulation of laser welding process of Ti6Al4V 1.7 mm sheets in butt joint in order to predict the temperature distribution, hardness, and weld geometry. The buttjoint welds were made using CO2 laser with the maximum power of 2.2 kW in the continuous wave mode. A part of the experimental work was carried...