Model development for mechanical properties and weld quality class of friction stir welding using multi-objective Taguchi method and response surface methodology

2015 ◽  
Vol 29 (6) ◽  
pp. 2323-2331 ◽  
Author(s):  
Mohamed Ackiel Mohamed ◽  
Yupiter H. P. Manurung ◽  
Mohamed Nor Berhan
Keyword(s):  
Mechanical Properties ◽  
Response Surface Methodology ◽  
Friction Stir Welding ◽  
Taguchi Method ◽  
Response Surface ◽  
Model Development ◽  
Weld Quality ◽  
Quality Class ◽  
Friction Stir ◽  
Multi Objective

scholarly journals Mechanical and Formability Evaluation of ST14 Alloys Welded by Friction Stir Welding

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Mahmoud Afshari ◽  
Nima Fakhralmobasheri ◽  
Mohammad Reza Samadi ◽  
Amirhossein Alavi ◽  
Hossein Norozi Foroushani
Keyword(s):  
Mechanical Properties ◽  
Response Surface Methodology ◽  
Friction Stir Welding ◽  
Experimental Design ◽  
Response Surface ◽  
Base Metal ◽  
Tensile Failure ◽  
Dome Height ◽  
Experimental Conditions ◽  
Friction Stir

Friction stir welding as one of the modern methods of solid-state welding of steel sheets and aluminum is a highly regarded industry. In these studies, the experimental design and response surface methodology were used. Optimization of experimental conditions and results which are compared with good agreement between the results was observed. The mechanical properties and ductility of welded plates under optimal conditions were studied. Microhardness testing, metallography, tensile testing, and limiting dome height were used to investigate the mechanical properties and formability limit diagram attached, respectively. The results showed that the heat-affected zone is very small and narrow and not easily distinguished from the base metal. In all tests, the failure of the dome height limit in the area was chaos. In all samples welded with the optimal parameters, tensile failure occurred in the base metal region. Turbulence in the region confirms the presence of WC particles. Experimental design and response surface methodology could introduce an optimal state, and the creation of common defects in the FSW process can prevent the binding strength of the guarantee. But due to the lack of proper stirring in the perturbation area in the samples welded with non-optimized parameters, the strength of the connection is not suitable, and samples were broken from the SZ region.

Model development for quality features of resistance spot welding using multi-objective Taguchi method and response surface methodology

2012 ◽  
Vol 24 (6) ◽  
pp. 1175-1183 ◽  
Author(s):  
Norasiah Muhammad ◽  
Yupiter H. P. Manurung ◽  
Roseleena Jaafar ◽  
Sunhaji Kiyai Abas ◽  
Ghalib Tham ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Taguchi Method ◽  
Response Surface ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Model Development ◽  
Multi Objective ◽  
Resistance Spot ◽  
Quality Features

Optimization of Friction Stir Welding Parameters with Simultaneous Multiple Response Consideration Using Multi-Objective Taguchi Method

2014 ◽  
Vol 974 ◽  
pp. 408-412 ◽  
Author(s):  
Mohamed Ackiel Mohamed ◽  
Yupiter HP Manurung ◽  
Mohammad Ridzwan Abdul Rahim ◽  
Norasiah Muhammad ◽  
Farizah Adliza Ghazali
Keyword(s):  
Friction Stir Welding ◽  
Taguchi Method ◽  
Signal To Noise Ratio ◽  
Plate Thickness ◽  
Traverse Speed ◽  
Welding Parameters ◽  
Optimization Approach ◽  
Weld Quality ◽  
Friction Stir ◽  
Multi Objective

This paper presents an unconventional method to optimize the governing process parameters of Friction Stir Welding (FSW) towards the mechanical properties and weld quality. The optimization approach attempts to consider simultaneously the multiple quality characteristics namely tensile strength, nugget zone hardness and weld quality class using Multi-objective Taguchi Method (MTM). The experimental study was conducted for plate thickness of 6.0 mm under different rotational and traverse speed. The optimum welding parameters were investigated using Taguchi method with L9 orthogonal array. The significant level of the welding parameters is to be investigated by using analysis of variance (ANOVA). Furthermore, the optimum value was analyzed by means of MTM which involved the calculation of total normalized quality loss (TNQL) and multi signal to noise ratio (MSNR).

Multi-Performance Optimization in Friction Stir Welding of Aluminum Alloy Using Response Surface Methodology

2018 ◽  
pp. 240-263
Author(s):  
Rajat Gupta ◽  
Kamal Kumar ◽  
Neeraj Sharma
Keyword(s):  
Response Surface Methodology ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Response Surface ◽  
Process Parameters ◽  
Performance Optimization ◽  
Desirability Function ◽  
High Carbon Steel ◽  
Friction Stir ◽  
Tool Shoulder

This chapter presents the friction stir welding (FSW) of aluminum alloy AA-5083-O using vertical milling machine. In present FSW experimentation, effects of different process parameter namely tool rotation speed, welding speed, tool geometry, and tool shoulder diameter have been determined on welding quality of two pieces of AA-5083-O using response surface methodology (RSM). The optimal sets of process parameters have been determined for weld quality characteristics namely tensile strength (UTS) and percentage elongation (%EL). In present experimentations, a specially designed tool made of high carbon steel with different shoulder diameters (15mm, 17.5mm, and 20 mm) having constant pin length (6 mm) were used for FSW of two pieces of aluminum alloy. The ANOVA and pooled ANOVA were used to study the effect of FSW parameters on UTS and %EL. Multi response optimization has been carried out using desirability function in conjunction with RSM to obtain the optimal setting of process parameters for higher UTS and lower %EL.

Optimization of friction stir welding parameters using multiple response surface methodology

2015 ◽  
Vol 231 (7) ◽  
pp. 571-583 ◽  
Author(s):  
Morteza Ghaffarpour ◽  
Ahmad Aziz ◽  
Taha-Hossein Hejazi
Keyword(s):  
Response Surface Methodology ◽  
Friction Stir Welding ◽  
Response Surface ◽  
Welding Parameters ◽  
Multiple Response ◽  
Good Correspondence ◽  
Industrial Systems ◽  
Friction Stir ◽  
Multiple Response Surface Methodology ◽  
The Impact

Improving quality in today’s complicated industrial systems is gaining more and more importance every day. Since applying these systems costs a lot, companies should try to offer the best outcomes and processes possible. One of the products most applied is Tailor Welding Blanks, which is widely used in automobile, aerospace, and other industries. One of the best methods of producing Tailor Welding Blanks is Friction Stir Welding. Using this technology, sheets dissimilar in material and thickness can be joined. In this paper, the possibility of welding thin sheets of 5083-H12 and 6061-T6 aluminum alloy by Friction Stir Welding with the thickness of 1.5 mm is examined. To detect the impact of Friction Stir Welding parameters, i.e. rotational speed (r/min), linear speed (mm/ min), shoulder diameter (mm), and tilt angle (°), a Box-Behnken design was used and using multiple Response Surface Methodology values of robust optimization of tensile strength and elongation were derived. The optimization and experiment results were then compared. The results of the comparison showed a good correspondence.

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