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Multi-response optimization of process parameters by Taguchi Grey relational analysis for dissimilar thickness friction stir process corner weld AA5086 alloy
Manigandan Krishnan1, Senthilkumar Subramaniam2.
This paper presents the multi-response optimization of friction stir corner
welding process for dissimilar thickness AA5086 aluminium alloy plates. The
corner joint of AA5086 aluminium alloy plates of thicknesses of 6 mm and 4 mm
was welded by Friction Stir Welding (FSW) process. The FSW experiments were
conducted agreeing to the L9 orthogonal array. Three FSW process parameters:
tool traverse speed (100, 150 and 190 mm/min), rotational speed (900, 1000 and
1100 rev/min), and plunge depth (0.1, 0.2, and 0.3 mm) were related with weld
tensile strength and hardness. The Analysis of Variance (ANOVA) was used to
determine the percentage contribution of each input parameter on the weld
quality. Taguchi Grey Relational Analysis is used to optimize and order the FSW
process parameters. Conferring to the results of the analyses, the optimal welding
condition was determined as 1000 rev/min for tool rotational speed, 150 mm/min
for traverse speed and 0.1 mm for tool plunge depth. The percentage contribution
of the traverse speed (54%) revealed a significant influence compared to tool
rotational speed (21%) and plunge depth (13%). The microstructures of various
zones were observed and analysed. Tensile tests were conducted and the fracture
was observed at heat affected zones for all the joints. Current consumption,
temperature distribution, and force generation during friction stir welding were
acquired and analysed.
Affiliation:
- VIT University, India
- VIT University, India
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MyJurnal (2019) |
H-Index
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0 |
Immediacy Index
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0.000 |
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Scopus (SCImago Journal Rankings 2016) |
Impact Factor
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Rank |
Q3 (Engineering (miscellaneous)) |
Additional Information |
0.193 (SJR) |
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