scholarly journals Taguchi analysis of dissimilar aluminum sheets joined by friction stir spot welding

2016 ◽  
Vol 22 (1) ◽  
pp. 17-23
Author(s):  
Mustafa Kemal Bilici ◽  
Barkın Bakır ◽  
Yahya Bozkurt ◽  
İrfan Çalış
Keyword(s):  
Spot Welding ◽  
Friction Stir Spot Welding ◽  
Taguchi Analysis ◽  
Friction Stir ◽  
Aluminum Sheets

scholarly journals Taguchi analysis of dissimilar aluminum sheets joined by friction stir spot welding

2016 ◽  
Vol 22 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Mustafa Kemal Bilici ◽  
Barkın Bakır ◽  
Yahya Bozkurt ◽  
İrfan Çalış
Keyword(s):  
Spot Welding ◽  
Friction Stir Spot Welding ◽  
Taguchi Analysis ◽  
Friction Stir ◽  
Aluminum Sheets

Friction Stir Spot Welding for Structural Aluminum Sheets

2009 ◽  
Vol 2 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Tsung-Yu Pan ◽  
Michael L. Santella ◽  
Nic Blundell
Keyword(s):  
Spot Welding ◽  
Friction Stir Spot Welding ◽  
Friction Stir ◽  
Aluminum Sheets

Friction Stir Spot Welding (FSSW) of Aluminum Sheets: Experimental and Simulative Analysis

2013 ◽  
Vol 549 ◽  
pp. 477-483 ◽  
Author(s):  
Gianluca D'Urso ◽  
Michela Longo ◽  
Claudio Giardini
Keyword(s):  
Process Parameters ◽  
Spot Welding ◽  
New Technology ◽  
Single Point ◽  
Tensile Tests ◽  
Friction Stir Spot Welding ◽  
Model Parameters ◽  
Friction Stir ◽  
Aluminum Sheets ◽  
Welding Forces

Friction Stir welding (FSW) is a solid state joining process developed by TWI (The Welding Institute) in 1991. This technology is suitable for joining different materials even considered difficult to be welded using more traditional techniques and it is appropriate to weld materials in different configurations (such as butt, lap, circumferential, T-joint etc). Recently, starting from the FSW approach, a new technology called Friction Stir Spot Welding (FSSW) was developed. In this case, instead of moving along the weld seam, the tool only indents two overlapped parts. In some applications, this technology can be considered as a valid alternative for single point joining processes like resistance spot welding (RSW) and riveting processes. This work deals with an experimental study of the FSSW process for the lap-joining of thin aluminum sheets. In particular, an experimental campaign was performed on AA6060 T6 aluminum sheets having a thickness equal to 2 mm. The FSSW process was applied on couples of overlapped sheets by varying the tool rotational speed, and by keeping fixed the other process parameters, such as axial feed rate, indentation depth, and dwell time. Welding forces distributions were recorded during the process. Preliminary tensile tests and metallurgical analyses were also performed to evaluate the quality of the joints as function of the chosen process parameters. A numerical model of the FSSW process was developed and implemented using the commercial FEM code Deform 3D. The model parameters were set according to the experimental evidence.

Flat friction stir spot welding of three 6061-T6 aluminum sheets

2019 ◽  
Vol 264 ◽  
pp. 414-421 ◽  
Author(s):  
Yufeng Sun ◽  
Hidetoshi Fujii ◽  
Shijie Zhu ◽  
Shaokang Guan
Keyword(s):  
Spot Welding ◽  
Friction Stir Spot Welding ◽  
Friction Stir ◽  
Aluminum Sheets

scholarly journals Microstructure and Mechanical Performances Analyses on Probeless Friction Stir Spot Welds of AA6061-T6 Aluminum Sheets

2021 ◽  
Author(s):  
Yu Guishen ◽  
Chen Xin ◽  
Wu Zitao ◽  
Zhang Guanchen ◽  
Chen Yixiong
Keyword(s):  
Mechanical Properties ◽  
Spot Welding ◽  
Shear Failure ◽  
Friction Stir Spot Welding ◽  
Welding Parameter ◽  
Mixed Mode Fracture ◽  
Tensile Shear ◽  
Friction Stir ◽  
Aluminum Sheets ◽  
Mechanical Performances

Abstract Probeless friction stir spot welding (PFSSW) is a variation of conventional friction stir spot welding (CFSSW), which solves the keyhole defect in CFSSW welds. In this work, four types of probeless tools were designed based on helix and spiral feature: small curvature helix (involute tool, IT), large curvature helix (archimedes tool, AT), spiral line (scroll tool, ST) and no feature (flat tool, FT). AA6061-T6 sheets with a thickness of 1.5 mm were welded using the designed probeless welding tools. The effect of tool shapes on the microstructure and mechanical properties of friction stir spot welded AA 6061-T6 aluminum alloy sheets was investigated using different rotational speeds, plunging depths and dwell times. The Taguchi method was utilized to obtain the optimal welding parameter combination for the four tools. And, the tensile-shear mechanical properties of FSSW specimens were characterized under the optimal parameters. The results show that a basin-shaped profile appeared in the weld metallography using the groove tools. The tensile shear failure load (TSFL) of IT (~6.97 kN) was higher than that of ST (~6.49 kN), AT (~6.19 kN) and FT (~5.67 kN), sequentially. Three different fracture modes, interfacial fracture, plug fracture and mixed-mode fracture were observed in the tensile-shear tests of weld specimens.

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