A5028239091- Advanced Welding Techniques Analysis
- Metal Forming Simulation Techniques
- Aluminum Alloys Composites Properties
- Welding Techniques and Residual Stresses
- Aluminum Alloy Microstructure Properties
- Mechanical Behavior of Composites
Islamic Azad University, Tehran
2021-2024
University of Mazandaran
2021
One of the main challenging issues in friction stir welding (FSW) stiffened structures is maximizing skin and flange mixing. Among various parameters FSW that can affect quality mixing between tool plunge depth (TPD). In this research, effects TPD during an Al-Mg-Si alloy T-joint are investigated. The computational fluid dynamics (CFD) method help understand on structure. For reason, CFD employed simulation heat generation, distribution, material flow, defect formation processes at TPD. a...
Research on T-configuration aluminum constructions effectively decreases fuel consumption, increases strength, and develops aerial structures. In this research, the effects of friction stir welding (FSW) tool offset (TO) Al–Mg–Si alloy mixing bonding in T-configurations is studied. The process simulated by computational fluid dynamic (CFD) technique to better understand material flow between skin flange during FSW. According results, best can be only achieved at an appropriate TO. TO...
Among the emerging new welding techniques, friction stir (FSW) is used frequently for high-strength aluminum alloys that are difficult to weld by conventional fusion-welding techniques. This paper investigated effects of tool-positioning factors on maximum temperature generated in dissimilar FSW joint AA6061-T6 and AA7075-T6 alloys. Three plunge depth, tool offset, tilt angle were as input parameters. Numerical simulation process was performed ABAQUS software using coupled...
This article investigates the flow of materials and weld formation during underwater friction stir welding (UFSW) low carbon steel. A thermo-mechanical model is used to understand relation between frictional heat phenomena properties. To better effects water environment, simulation experimental results were compared with sample prepared by traditional (FSW) method. Simulation from surface diffusion indicate a smaller preheated area in front FSW tool declined total generated UFSWed case FSWed...
The present study investigates the effect of two parameters process type and tool offset on tensile, microhardness, microstructure properties AA6061-T6 aluminum alloy joints. Three methods Friction Stir Welding (FSW), Advancing Parallel-Friction (AP-FSW), Retreating (RP-FSW) were used. In addition, four modes 0.5, 1, 1.5, 2 mm used in welding passes AP-FSW RP-FSW processes. Based results, it was found that mechanical welded specimens with techniques experience significant increments compared...
The friction stir welding (FSW) of tool pin geometry plays a critical role in the final properties produced joint. directly affects generation heat and flow internal materials during FSW process. effects angle on have not been quantitatively investigated detail. In this manuscript, validated Computational Fluid Dynamic (CFD) model was implemented to analyze thermo-mechanical action process AA5058 Al-Mg alloy. Experimental test results validate thermal outcomes used model. obtained revealed...
In this study, the effects of traverse and rotational velocities noncontact shoulder tool on heat generation heated flux during friction stir joining high-density polyamide 6 (PA6) polymer were investigated. The computational fluid dynamics (CFD) method was employed to simulate thermomechanical phenomena (FSJ) process PA6. A developed model used consider void formation thermochemical properties surface internal flow, material geometry joint simulated, an experimental study evaluated...
Friction Stir Welding (FSW) is a solid-state bonding technique. There are many direct and indirect factors affecting the mechanical microstructural properties of FSW joints. Tool offset, tilt angle, plunge depth determinative tool positioning in process. Investigating effect these simultaneously with other parameters such as process speeds (rotational speed translational speed) geometry leads to poor understanding impact on Because three mentioned have same origin, they should be studied...