Genetic Algorithm Based Optimization of the Process Parameters for Manual Metal Arc Welding of Dissimilar Metal Joint

Ahire, P.G.; Patil, Uday; Kadam, M. S.

doi:10.1016/j.promfg.2018.02.015

Cited by 17 publications

(6 citation statements)

References 1 publication

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“…Diameter electrodes of 2.6 mm are used in this study. Tensile testing was conducted using a universal testing machine [7] to obtain the tensile strength of welded joints.…”

Section: A Materialsmentioning

confidence: 99%

“…Nair [4] used Taguchi to improve the tensile strength of SMAW welded joint of SS316L plates and found the optimum parameters are welding current of 100A, welding angle of 15 o , and filler electrode of E316L. On the other hand, Ahire [7] used the Taguchi method supported by RSM and GA based techniques to optimize the tensile strength on SS304 and mild steel plates welded joint. They found that the optimum parameters are welding current of 91.4A, welding speed of 6.7 mm/s, electrode angle of 30 o , and root gap of 1 mm.…”

Section: Introductionmentioning

confidence: 99%

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Robust Parameter Design of Shielded Metal Arc Welding (SMAW) for Optimum Tensile Strength

Setiawan

Pradana

Suprayitno

2021

JMEST

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Shielded Metal Arc Welding (SMAW), an arc welding process, is widely used in applications. In practice, SMAW is widely applied to the welding process on hollow square pipe. Performance expected from this welding is the tensile strength of weld joint. The tensile strength is influenced by parameters process which have possibility for an optimization process to become ‘robust’. Robust is a design which less sensitive to the effect of uncertain quantities or noise factors. Taguchi method is the most efficient optimization method which accommodates the noise factors effect and requires less experiment. This study is focusing on optimizing the welding process on hollow square pipe. Parameters process such as welding current (I), electrode angle (θ), root gap (d) and electrode type (E) are adopted as parameters design. Taguchi method are chosen as a strategy and L9 fractional orthogonal array are chosen as the design experiment, which only 9 experiment samples needed from 81 experiments that should have been carried out for full factorial design. The objectivity is to maximize the tensile strength of weld joint. Three replications of L9 fractional orthogonal array Taguchi had been performed to generate the tensile strength and estimates the fluctuation of the output caused by noise factors. This study found that the welding current of 100A (I), electrode angle (θ) of 90°, root gap (d) of 2 mm, and electrode type (E) of E7018 produce the optimum results. Tensile strength improved from this robust parameter design is about 98.39 MPa based on initial parameter design.

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“…Diameter electrodes of 2.6 mm are used in this study. Tensile testing was conducted using a universal testing machine [7] to obtain the tensile strength of welded joints.…”

Section: A Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Robust Parameter Design of Shielded Metal Arc Welding (SMAW) for Optimum Tensile Strength

Setiawan

Pradana

Suprayitno

2021

JMEST

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“…The experiments were designed by response surface methodology (RSM) to optimize the effect of root gap, welding speed, welding current, and electrode angle on deposition rate and weld strength. They reported that GA significantly improved the process [ 9 ]. Ali et al developed a mathematical model for the SMAW process by employing an artificial neural network, and underlined the effect of preheating, cryo-treatment on weld joint characteristics such as grain growth and refinement, HAZ depth, and weld interface.…”

Section: Introductionmentioning

confidence: 99%

An Integrated Approach of GRA Coupled with Principal Component Analysis for Multi-Optimization of Shielded Metal Arc Welding (SMAW) Process

et al. 2020

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Welding distortion is a critical issue as it leads to severe deterioration of structural integrity of welded work piece and dimensional precision. This study aims at studying the effects of shielded metal arc welding (SMAW) parameters on the evolution of mechanical properties, including tensile strength, impact toughness, and hardness, along with angular distortion on a welded joint from SA 516 grade 70. Such parameters are analyzed and optimized by employing the Taguchi method and Grey relational analysis. SA 516 grade 70 is commercially used for fabrication of storage tanks, boilers and pressure vessels. SMAW is investigated with three levels of root gap, groove angle, electrode diameter, and pre-heat temperature, which were varied on a butt joint in flat (1 G) position to determine their effects on response variables at room temperature. Nine experiments were designed using a Taguchi L9 orthogonal array, welded according to American Society of Mechanical Engineers (ASME) section IX, and samples were prepared and tested as per ASTM A 370. The Taguchi method and Grey relational analysis were employed to observe the most significant parameters and optimal levels that synergically yield improved responses. Results are validated by conducting confirmatory experiments that show good agreement with optimum results.

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“…The joining of these parts is often accomplished with welding technology. The joining is often done using different welding techniques, including arc, resistance, laser and electron beam welding techniques (Ahire et al, 2018). Though advanced welding techniques such as laser welding and friction stir welding are now being used for joining steels and other metals, gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW) are preferred for welding thick sections of hard metals in civil construction, ship building and some pipelines construction (Abioye et al, 2019a).…”

Section: Introductionmentioning

confidence: 99%

Effects of post-weld heat treatments on the microstructure, mechanical and corrosion properties of gas metal arc welded 304 stainless steel

Abioye

Omotehinse

Oladele

et al. 2020

WJE

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Purpose The purpose of this study is to determine the effects of post-annealing and post-tempering processes on the microstructure, mechanical properties and corrosion resistance of the AISI 304 stainless steel gas metal arc weldment. Design/methodology/approach Gas metal arc welding of AISI 304 stainless steel was carried out at an optimized processing condition. Thereafter, post-annealing and post-tempering processes were performed on the weldment. The microstructure, mechanical and electrochemical corrosion properties of the post-weld heat treated samples, as compared with the as-welded, were investigated. Findings The as-welded joint was characterized with sub-granular grain structure, martensite formation and Cr-rich carbides precipitates. This made it harder than the post-annealed and post-tempered joints. Because of slower cooling in the furnace, the post-annealed joint contained Cr-rich carbides precipitates. However, the microstructure of the post-tempered joint is more refined and significantly devoid of the carbide precipitates. Post-tempering process improved the elongation (∼23%), tensile (∼10%) and impact (∼31%) strengths of the gas metal arc AISI 304 stainless steel weldment, while post-annealing process improved the elongation (∼20%) and impact strength (∼72%). Owing to the refined grain structure and significant elimination of the Cr-rich carbide precipitates at the joint, the post-tempered joint exhibited better corrosion resistance in 3.5 Wt.% NaCl solution than the post-annealed and the as-welded joints. Originality/value The appropriate post-weld heat treatment that enhances microstructural homogeneity and quality of the AISI 304 gas metal arc welded joint was determined.

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Genetic Algorithm Based Optimization of the Process Parameters for Manual Metal Arc Welding of Dissimilar Metal Joint

Cited by 17 publications

References 1 publication

Robust Parameter Design of Shielded Metal Arc Welding (SMAW) for Optimum Tensile Strength

Robust Parameter Design of Shielded Metal Arc Welding (SMAW) for Optimum Tensile Strength

An Integrated Approach of GRA Coupled with Principal Component Analysis for Multi-Optimization of Shielded Metal Arc Welding (SMAW) Process

Effects of post-weld heat treatments on the microstructure, mechanical and corrosion properties of gas metal arc welded 304 stainless steel

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