Modelling and optimisation of a gas metal arc welding process by genetic algorithm and response surface methodology

Modelling and optimisation of a gas metal arc welding process by genetic algorithm and response surface methodology

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Article ID: iaor2003129
Country: United Kingdom
Volume: 40
Issue: 7
Start Page Number: 1699
End Page Number: 1711
Publication Date: Jan 2002
Journal: International Journal of Production Research
Authors: , ,
Keywords: genetic algorithms, response surface, welding
Abstract:

The welding process, due to its complexity, has relied on empirical and experimental data to determine its welding conditions. However, trial-and-error methods to determine optimal conditions incur considerable time and cost. In order to overcome these problems, a genetic algorithm and response surface methodology have been suggested for determining optimal welding conditions. First, in a relatively broad region, near-optimal conditions were determined through a genetic algorithm. Then, the optimal conditions for welding were determined over a relatively small region around these near-optimal conditions by using response surface methodology. In order to give different objective function values according to the positive or negative response from the set target value in the optimization problem, a desirability function approach was used. Application of the method proposed in this paper revealed a good result for finding the optimal welding conditions in the gas metal arc (GMA) welding process.

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