In-process control strategies for friction stir welding of AZ31 sheets with non-uniform thickness

Buffa, Gianluca; Campanella, Davide; Forcellese, Archimede; Fratini, Livan; Commare, Umberto La; Simoncini, Michela

doi:10.1007/s00170-017-1223-z

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…[6][7][8][9][10] It is thought that FSW consumes less energy as compared with fusion welding technologies due to the lower temperatures involved and the solid-state nature of the process. [11][12][13][14][15] Heurtier et al found that the heat inputs for gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW) are 2 and 1.5 times higher than that for FSW, respectively. 16 Furthermore, FSW leads to a decrease in material waste and avoids radiation and dangerous fumes.…”

Section: Introductionmentioning

confidence: 99%

Comparison among the environmental impact of solid state and fusion welding processes in joining an aluminium alloy

Ciarapica

Forcellese

Simoncini

2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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The life-cycle assessment methodology was used to evaluate the environmental impact of friction stir welding of AA5754-H114 aluminium alloy sheets. Other works in literature considered the environmental impact of friction stir welding, but in this study the influence of different process parameters on midpoint category impacts were analysed. Friction stir welding was performed under different values of rotational and welding speeds. Moreover, pin tool wear and mechanical properties of joints were also evaluated. The pre- and post-processing stages were also considered. Raw materials, energy and all inputs associated with each stage of product life cycle were collected and evaluated to analyse the environmental impact index. The results showed that, irrespective of the rotational speed, the lowest welding speed investigated leads to the highest energy consumption and, consequently, to the highest values of the midpoint category impact. On the contrary, at the highest welding speed, the environmental impact assumes the lowest values. By concerning the rotational speed, its effect on the midpoint category impact is strongly reduced compared with the one given by the welding speed. A performance index, obtained by considering both the midpoint category impact and ultimate tensile strength of the joints, was also defined. Finally, the environmental sustainability of friction stir welding was compared with two different fusion welding technologies, namely gas tungsten arc welding and laser beam welding. The results showed that friction stir welding was characterized by midpoint category impacts much lower than those of the gas tungsten arc welding, while such discrepancies decreased with the laser beam welding.

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Section: Introductionmentioning

confidence: 99%

Comparison among the environmental impact of solid state and fusion welding processes in joining an aluminium alloy

Ciarapica

Forcellese

Simoncini

2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…The influence of the main process parameters of the tool force, the micro-and macro mechanical properties, and the joints microstructures in the dip and hump zones were analyzed. The results showed that using the rotational speed change-based approach, the hump zones are subjected to increased heat input with consequent increase of the heat affected zone extension and average grain size (up to11 µm) [16]. The aluminum alloys were positioned on the top portion of the welding, creating a butt weld.…”

Section: Introductionmentioning

confidence: 99%

Studies on Effect of Welding Parameters on the Friction Stir Welding of Aluminium 6061-T6 Butt Welded Joints using Taguchi L9 Approach

Maneiah¹,

Tjprc²

2018

IJMPERD

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The two sheets of aluminum 6061-T6 alloy of size 200×150×3 (mm) are butt-welded by the friction stir welding process by varying the weld parameters such as rotational speed, tilt angle, and feed. The taguchi L9 experimental technique is used to draw the experimental conditions by taking the above said friction-stir welding process parameters.The temperature of the weld bead during the friction-stir welding is measured. The hardness of the weld bead is measured by using the hardness testing machine to find out the hardness value of the weld joints and on the base plates. Analysis of variance (ANOVA) analysis is performed to test the significance of the experimental model at 95% confidence interval.Optimality of the friction-stir welding process parameters for the butt welding of aluminum 6061-T6 alloy is obtained by using the multiple response desirability factors.

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Significance of tool offset and copper interlayer during friction stir welding of aluminum to titanium

Kar

Suwas

Kailas

2018

Int J Adv Manuf Technol

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In-process control strategies for friction stir welding of AZ31 sheets with non-uniform thickness

Cited by 7 publications

References 25 publications

Comparison among the environmental impact of solid state and fusion welding processes in joining an aluminium alloy

Comparison among the environmental impact of solid state and fusion welding processes in joining an aluminium alloy

Studies on Effect of Welding Parameters on the Friction Stir Welding of Aluminium 6061-T6 Butt Welded Joints using Taguchi L9 Approach

Significance of tool offset and copper interlayer during friction stir welding of aluminum to titanium

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