Comparison between genetic algorithms and response surface methodology in GMAW welding optimization

Correia, D.; Gonçalves, Cristiene Vasconcelos; Cunha, Sebastião Simões da; Ferraresi, Valtair Antonio

doi:10.1016/j.jmatprotec.2004.04.243

Cited by 136 publications

(50 citation statements)

References 5 publications

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“…Apesar da aplicação da liga Inconel 625 por soldagem ser uma alternativa desejável, em função da liga apresentar elevada resistência em alta temperatura, boa soldabilidade,resistência à fluência, resistência à fadiga e excelente resistência à corrosão e oxidação em ambientes agressivoso custo da mesma é bastante elevada, sendo necessário que seja realizado um planejamento de estudos do processo para aplicação da liga (17,18) . A otimização experimental de processos de soldagem é bem lenta, devido aos vários parâmetros de processos envolvidos e a muitos eventos não lineares (19) . O planejamento experimental fatorial se mostra superior aos métodos univariantes.…”

Section: Introductionunclassified

“…A Metodologia de Superfície de Resposta (MSR) permite que o pesquisador aproxime o mecanismo desconhecido com um modelo empírico adequado, sendo assim a função que representa o modelo é denominado de Superfície de Resposta. A otimização dos dados experimentais para obter um bom ajustamento do modelo de superfície de resposta, requer conhecimentos básicos estatísticos do projeto experimental tais como: técnica de regressão e métodos de otimização elementar (19) . Este artigo se propõe a analisar os efeitos dos parâmetros de soldagem (tensão, velocidade de alimentação e velocidade de soldagem) sobre as características geométricas (reforço, largura e índice de convexidade), diluição, microestrutura, microdureza e resistência à corrosão de revestimentos da superliga Inconel 625 depositados pelo processo GMAW a sobre chapas de aço API 5L X70.…”

Section: Introductionunclassified

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Avaliação de Revestimentos à base de Inconel 625 depositados através do Processo de Soldagem GMAW em aço API 5L X70 utilizando Planejamento Fatorial

Santos

Maciel

Santana

2015

RBAV

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Concern for the environment has motivated several studies on the use of new materials to extend the life of equipment operating in harsh environments in the oil sector. One alternative that has been used is the application of coatings with high corrosion resistance welding process materials. The objective of this study was to evaluate the effects of different welding parameters on the geometric characteristics, dilution, microhardness, microstructure and corrosion resistance of the coatings with Inconel 625 alloy deposited on the API 5L X70 steel used in oil pipelines to transport plate. The parameters were optimized using the factorial statistical experimental design for analysis of process parameters, and the results analyzed by Response Surface Methodology (RSM). Three deposits were carried out ½ overwrite process GMAW (Gas Metal Arc Welding), followed by cross-sectional analysis of samples for the geometrical and metallographic characteristics. For the analysis corrosion, the coating surface being machined to have a height of 3 mm according to Standard N-1707 Petrobrás coating. The electrochemical behavior of the coating surface (Inconel 625) was investigated at room temperature in NaCl solution using the technique of linear potentiodynamic polarization and electrochemical impedance spectroscopy. To reveal the corrosion resistance of the coatings, featuring some important parameters were considered, such as: the polarization resistance (Rp) and the corrosion potential (Ecorr). The results showed dilution values D (%) ranging from 12.77% to 24.88% in the maximum levels (18.99 KJ/cm) and minimum (8.34 KJ/cm) welding power, and the amounts the most important of 12.77%. As to the corrosion resistance, the results were more satisfactory for the highest level of welding power.Keywords: GMAW; Coating; Corrosion. RESUMOA preocupação com o meio ambiente vem motivando diversas pesquisas sobre o uso de novos materiais para prolongar a vida útil de equipamentos que operam em ambientes agressivos no setor de petróleo. Uma das alternativas que vem sendo utilizada é a aplicação de revestimentos com materiais de alta resistência à corrosão por processo de soldagem. Objetivou-se neste estudo avaliar os efeitos dos diferentes parâmetros de soldagem sobre as características geométricas, diluição, microdureza, microestrutura e resistência à corrosão dos revestimentos com liga Inconel 625 depositados sobre chapa do aço API 5L X70 utilizado em dutos para transporte de petróleo. Os parâmetros foram otimizados utilizando o planejamento experimental fatorial completo para analise dos parâmetros de processo, sendo os resultados analisados pela Metodologia de Superfície de Resposta (MSR). Foram realizados três depósitos com sobreposição de ½ por processo de soldagem GMAW (Gas metal arc welding), seguido de corte transversal das amostras para a analise das caraterísticas geométricas e metalograficas. Para as analises de corrosão, as superfície do revestimento foram usinadas ficando com uma altura de 3 mm de acordo com a norma N...

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Section: Introductionunclassified

Avaliação de Revestimentos à base de Inconel 625 depositados através do Processo de Soldagem GMAW em aço API 5L X70 utilizando Planejamento Fatorial

Santos

Maciel

Santana

2015

RBAV

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“…One of the most widely used methods to solve this problem is the Response Surface Methodology (RSM), in which the experimenter tries to approximate the unknown mechanism with an appropriate empirical model and the function representing this method is called a Response Surface Model. Identifying and fitting a good Response Surface Model from experimental data requires some knowledge of statistical experimental design, bases of regression modeling techniques and elementary optimization methods (Thorpe 1980;Ellis, Garrett 1986;Murugan et al 1993;DuPont, Marder 1996;Doumanidis, Kwak 2002;Correia et al 2005;Palani, Murugan 2007).…”

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confidence: 99%

Effects of MIG process parameters on the geometry and dilution of the bead in the automatic surfacing

Chotěborský¹,

Navrátilová²,

Hrabě³

2011

Res. Agric. Eng.

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Chotěborský R., Navrátilová M., Hrabě P., 2011. Effects of MIG process parameters on the geometry and dilution of the bead in the automatic surfacing. Res. Agr. Eng., 57: 56-62.Automatic weld surfacing is being employed increasingly in the process, mining and power industries. Gas metal arc welding has become a natural choice for automatic surfacing due to its important properties. These include: high reliability, all positions capabilities, ease of use, low cost and high productivity. With increasing use of gas metal arc welding in its automatic mode, the use of mathematical models to predict the dimensions of the weld bead has become necessary. The development of such mathematical equations using a four factor central factorial technique to predict the geometry of the weld bead in the deposition of OK Tubrodur 15.43 electrode onto structural steel S235JR is discussed. The models developed have been checked for their adequacy and significance by using the F test and the Student's t test, respectively.

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“…For the purpose of selecting appropriate or optimum manufacturing parameters, a considerable number of authors have used various optimisation techniques such as genetic algorithm (Correia et al, 2005;Sathiya et al, 2013;Kim et al, 2002), simulated annealing (Katherasan et al, 2013;Min et al, 2001;Padmanaban et al, 2014;Roshan et al, 2013), ant colony optimisation algorithm (Raghavendra et al, 2009;Okumoto, 2009), artificial bee colony algorithm (Fang et al, 2014), particle swarm optimisation (Majumder, 2013(Majumder, , 2014Majumder et al, 2014) etc. The major disadvantage of such techniques is they require an empirical relation between factors and response parameters which can only be possible by using RSM or ANN technique (Kim et al, 2002;Roshan et al, 2013;Majumder, 2013Majumder, , 2014Majumder et al, 2014).…”

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confidence: 99%

A simple and robust fuzzy-AHP-based Taguchi approach for multi-objective optimisation of welding process parameters

Majumder

2017

IJPQM

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Abstract:In optimisation of manufacturing process parameters there are many response variables (or physical characteristics of the end product) that are under investigation at the same time. Therefore, to solve such a multi-response optimisation problem, it felt necessary to develop a robust technique which allows the simultaneous optimisation of several responses. In this paper, a novel performance integrating strategy based on fuzzy-AHP technique is introduced to the Taguchi method. Detailed methodology and advantages of this approach are highlighted during this study. A case study of parametric optimisation during submerged arc welding demonstrates the effectiveness of the proposed approach.Keywords: analytic hierarchy process; AHP; Taguchi method; multi-objective optimisation; fuzzy logic; sub-merged arc welding.Reference to this paper should be made as follows: Majumder, A. (2017) 'A simple and robust fuzzy-AHP-based Taguchi approach for multi-objective optimisation of welding process parameters', Int.

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Comparison between genetic algorithms and response surface methodology in GMAW welding optimization

Cited by 136 publications

References 5 publications

Avaliação de Revestimentos à base de Inconel 625 depositados através do Processo de Soldagem GMAW em aço API 5L X70 utilizando Planejamento Fatorial

Avaliação de Revestimentos à base de Inconel 625 depositados através do Processo de Soldagem GMAW em aço API 5L X70 utilizando Planejamento Fatorial

Effects of MIG process parameters on the geometry and dilution of the bead in the automatic surfacing

A simple and robust fuzzy-AHP-based Taguchi approach for multi-objective optimisation of welding process parameters

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