Multi-response optimization of process parameters for friction stir welding of joining dissimilar Al alloys by gray relation analysis and Taguchi method

Kumar, Sanjay; Kumar, Sudhir

doi:10.1007/s40430-014-0195-2

Cited by 30 publications

(20 citation statements)

References 8 publications

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“…The existing approach that has been employed in examining multi-objective optimization of friction stir welding in literature is based on either Grey relational analysis (GRA) or a combination of GRA and other design approaches. For instance, Kesharwani et al [15] and Kumar and Kumar [16] applied multi-objective optimization of process parameters on dissimilar welding of AA5052-H32/AA5754-H22 and AA6061/AA6082 using a Taguchi-based Grey approach. Also, Palani and Elanchezhian [4] investigated multi-response optimization of process parameters on AA8011 friction stir welded aluminium alloys using RSM-coupled GRA.…”

Section: Introductionmentioning

confidence: 99%

Hybrid multi-response optimization of friction stir spot welds: failure load, effective bonded size and flash volume as responses

Ojo

Taban

2018

Sādhanā

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Friction stir spot welding (FSSW) is a multi-input multi-response process. Effective multi-response optimization of welds is desirable to create welds with a balance of quality responses. In order to eliminate the subjectivity (uncertainty and engineering judgment) with the existing multi-response Taguchi-based Grey relational analysis, principal component analysis (PCA) was integrated into it. The PCA helps in determining the effective optimal weighting values required for the estimation of Grey relational grade (GRG). As a result, tool rotational speed, plunge depth and dwell time were employed as input parameters while failure load (FL), expelled flash volume (EFV) and effective bonded size (EBS) of conical pin friction stir spot-welded joint of AA2219-O alloy were the chosen output responses. EFV was minimized while FL and EBS of the joints were maximized using this hybrid multi-response approach. From the analysis of variance of GRG and its response graphs, the significant parameters and their levels were obtained. Experimental results confirmed the effectiveness and robustness of this method. In addition, three critical zones were observed on the fracture surfaces of joints, namely, tool impelled unbonded zone, partially bonded zone and effective bonded/nugget zone. The weld nugget failed by circumferential nugget shear mode.

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Section: Introductionmentioning

confidence: 99%

Hybrid multi-response optimization of friction stir spot welds: failure load, effective bonded size and flash volume as responses

Ojo

Taban

2018

Sādhanā

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“…Hence, this study aims at the investigation of the commercial UNS C95800 Nickel Aluminum Bronze (NAB) alloy of 6mm thickness plate welded by FSW. This is subject to various welding conditions under variable tool rotation speeds, welding speeds and axial loads as major topics for research for evaluation of the weld region of the NAB alloy 24,25,26 . The macrostructure, microstructure, micro-hardness and tensile properties of the processes were examined after the FSW.…”

Section: Introductionmentioning

confidence: 99%

Effect of Process Parameters on Microstructure and Mechanical Properties of Friction Stir Welded Cast Nickel Aluminum Bronze Alloy (C95800)

et al. 2018

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In the present study, Friction Stir Welding (FSW) of Nickel Aluminum Bronze (NAB) alloy was carried out by varying the axial load, rotation speed and welding speed rate. Micro-structural analyses of these samples revealed the different grain sizes and shapes of the various zones. Hardness and tensile strength tests were carried out for the samples welded at different conditions such as axial load, welding speed and rotational speed. Grain refinement in the weld nugget zones was achieved for all welding conditions. The refined grains in weld nugget zone (WNZ) make a main contribution to the increase of mechanical properties of FSW welded NAB alloy. The microhardness of the stir zone and Thermo-Mechanically Affected Zone (TMAZ) was found to be higher than that of the base metal. Transverse tensile strength of weld joint was higher than that of the base metal. On the other hand, a lower or similar tensile strength value compared to the base metal was seen from other variable welding parameters. This was due to the tunnel defect in the welded nugget zone. ANOVA test result was used for finding out the contribution of the process parameter.

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“…Jako czynniki sterujące w metodyce Taguchi zostały wybrane: prędkość obrotowa, siła docisku i kształt trzpienia narzędzia. Kształt trzpienia rozpatrywany był również jako parametr wejściowy w badaniach S. Kumar et al [30] dla stopu aluminium 6056. J. Kundu et al [31] poszukiwali możliwości osiągnięcia maksymalnej wytrzymałości dla połączeń ze stopu AA5083 wykonanych metodą FSW.…”

Section: Utrata Jakościunclassified

“…Z tego powodu, w niektórych pracach wykorzystywane są techniki hybrydowe stanowiące kombinacje metod optymalizacyjnych tworzonych na potrzebę danego procesu [22]. W celu zbadania siły związku pomiędzy badanymi zmiennymi metoda Taguchi łączona jest często z teorią szarego systemu GRA [13,16,18,22,30,31] lub sztuczną siecią neuronową ANN [36]. Optymalizacja parametrów zazwyczaj zakończona zostaje także analizą wariancji ANOVA, która ma na celu wykazanie, które zmienne niezależne mają wpływ na poziom zmiennej zależnej.…”

Section: Podsumowanieunclassified

Zastosowanie metody Taguchi w spawalnictwie

Ostromęcka

2017

Przegląd Spawalnictwa

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Multi-response optimization of process parameters for friction stir welding of joining dissimilar Al alloys by gray relation analysis and Taguchi method

Cited by 30 publications

References 8 publications

Hybrid multi-response optimization of friction stir spot welds: failure load, effective bonded size and flash volume as responses

Hybrid multi-response optimization of friction stir spot welds: failure load, effective bonded size and flash volume as responses

Effect of Process Parameters on Microstructure and Mechanical Properties of Friction Stir Welded Cast Nickel Aluminum Bronze Alloy (C95800)

Zastosowanie metody Taguchi w spawalnictwie

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