Thermal Analysis of Friction Stir Welding for Different Tool Geometries

2021 ◽  
pp. 361-370
Author(s):  
Umesh Kumar Singh ◽  
Avanish Kumar Dubey ◽  
Ashutosh Pandey
Keyword(s):  
Thermal Analysis ◽  
Friction Stir Welding ◽  
Friction Stir ◽  
Tool Geometries

scholarly journals Thermal analysis of pentagonal profiled friction stir welding tool using Ansys

2020 ◽  
Vol 993 ◽  
pp. 012144
Author(s):  
P Jayaseelan ◽  
S Rajesh Ruban ◽  
M Suresh ◽  
NS Gowtham ◽  
P Saravanan
Keyword(s):  
Thermal Analysis ◽  
Friction Stir Welding ◽  
Friction Stir

Influence of Tool Geometry and Contact Condition on Friction Stir Welding of Al-Cu Laminated Composites

2013 ◽  
Vol 856 ◽  
pp. 16-21
Author(s):  
R. Beygi ◽  
Mohsen Kazeminezhad ◽  
A.H. Kokabi ◽  
S. Mohammad Javad Alvani ◽  
D. Verdera ◽  
...  
Keyword(s):  
Friction Stir Welding ◽  
Material Flow ◽  
Laminated Composites ◽  
Flow Behavior ◽  
Tool Geometry ◽  
Contact Conditions ◽  
Friction Stir ◽  
Tool Geometries ◽  
Welding Procedure ◽  
Sem Analyses

In this study friction stir welding of Al-Cu laminated composites were carried out by two different tool geometries. Welding procedure was carried out from both sides of Al and Cu. Analyzing cross section of welds showed that different contact conditions between shoulder and material, offers different material flow behavior which is dependent on the tool geometry. SEM analyses showed that mixing of materials in nugget region is more pronounced in the advancing side. Also XRD results indicated that welding from Cu side, leads to intermetallic formation in mixed regions.

Friction Stir Lap Welding of Aluminium Alloys

2014 ◽  
Vol 611-612 ◽  
pp. 1421-1428
Author(s):  
Carlo Bruni ◽  
Giovanni Quercetti ◽  
Massimiliano Pieralisi
Keyword(s):  
Friction Stir Welding ◽  
Aluminium Alloys ◽  
Tensile Shear ◽  
Friction Stir Lap Welding ◽  
Friction Stir ◽  
Tool Geometries ◽  
Lap Welding ◽  
Welding Properties ◽  
Transverse Area ◽  
Tool Rotation

The friction stir welding of lap sheets can be performed considering different variables in terms of process parameters, tool configuration, welding typology and so on. The proposed investigation deals with the friction stir welding of blanks, with the same thickness, performed under lap configuration with the sheets welded, in one-side and in both sides as well, with different tool geometries and tool rotation-wise. The double side allows to extend the weld through the whole thickness leading to better mechanical welding properties at the blank to blank interface. The weld morphology has been investigated through microstructure observations performed on the transverse area, with respect to the welding velocity, of each joint. The tensile shear strength of the joint in one-side weld is generally lower than that detected in two side weld.

Closed-Loop Temperature Control of Material Plasticisation during Friction Stir Welding

2014 ◽  
Vol 1019 ◽  
pp. 120-125
Author(s):  
D.G. Hattingh ◽  
Theo I. van Niekerk ◽  
Raymond Pothier
Keyword(s):  
Friction Stir Welding ◽  
Temperature Control ◽  
Closed Loop ◽  
Control Strategies ◽  
Industrial Process ◽  
Traverse Speed ◽  
Feedback Signal ◽  
Monitoring And Control ◽  
Friction Stir ◽  
Tool Geometries

This research presents the potential for improved joint integrity of friction stir welding by controlling the plasticisation temperature in the weld nugget. During a typical FSW, temperature fluctuates with position along the length of the weld. Working from a basis that for all material and tool geometries, there is an Optimal Plasticisation Temperature (OPT), this paper provides a strategy for maintaining this optimal weld temperature by adjusting selected weld input parameters ensuring consistent joint quality, irrespective of component geometry or clamp configuration. This proposed methodology can also be used to determine the OPT for different FSW tool geometries and material combinations. Advanced monitoring and control strategies are essential to ensure that FSW can be made a more robust industrial process that can keep pace with the modern demand for more consistent production and reliability of welded structures. The potential lies in the possibility for an operator to now select an OPT point for a specific approved welding program and allow the welding platform to maintain the OPT via closed-loop temperature control which adjusts tool rotation and or tool traverse speed. This paper further reports on the potential of integration of a closed-loop temperature control algorithm for FSW. The system measures the temperature inside the FSW tool using thermocouple sensors (creating the feedback signal). The controller then applies a PID algorithm which in turn drives the spindle speed (and if necessary, tool traverse speed) in order to change the energy input rate to the weld for controlling plasticisation temperature.

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