Butt joints are frequently used in assembly processes. However, relatively little attention has been paid to the proper design and selection of butt joint geometries and processes. In this paper, the assembly accuracy performance of different butt joint geometries and joining processes has been studied by using analytical models for part misalignment in the presence of part dimensional errors, ...

Thin AZ31 magnesium alloy sheets, i.e., 2 mm thick, are welded by Friction Stir Welding (FSW) in butt joint configuration using gap width up to 1.15 mm. All welds present good surface finishing and no internal defects, except for the weld produced maximum width. A reduction of thickness within Zone is seen with increase width, leading a 8.5%. Microstructure Vickers hardness investigations revea...

The present paper describes fuzzy logic simulation of shielded metal arc welding (SMAW) process to predict the Quality of weld joint. It describe the quality of weld joint & effect of welding current, voltage and welding speed on tensile strength of shielded metal arc pipe welded mild steel joints. An ERW Mild steel pipe I S 1239 of 6 mm thickness and 150 mm diameter were used as the base mater...

Abstract An analytical method for calculation of local stresses in double-sided butt welded joints at misalignment welds’ axes is developed. The applicable thin-gauge plates with different geometry welds on the face and root sides under tensile load. In given example, it was shown that reach their maximum value zone transition from weld to base metal which farther axis weld. results calculation...

Butt-welded joints are common in many industries. The fatigue behavior of such depends on numerous factors, e.g. load level, local weld geometry, or parent material strength. To make things worse, these factors often interact, yet mutual influence can hardly be quantified by multivariate studies, i.e. varying one factor at a time out due to the large number required tests and statistical nature...

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...

Butt welding is an important link to ensure quality, and the penetration state of weld main criterion achieve this. Online monitoring control welded joints measure quality. The molten pool image monitored by a visual sensor in gas metal arc (GMAW) process, bottom width predicted regression network model. Combined with real-time method, current changed monitor real time. Butt-welding experiments...

Elastic-plastic fracture toughness and fatigue crack growth resistance of full penetration butt welds were experimentally investigated. The obtained results were used to predict the critical crack size and the time to structural collapse of weld joints typically adopted in tubular towers of windmills. For this purpose, heavy in-service loading conditions were considered. In this way, it was pos...