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An Improved genetic algorithm for the prediction of surface finish in dry turning of SS 420 materials

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Abstract

Determination of optimal cutting parameters is one of the most important elements in any process planning of metal parts. This paper presents a development of an improved genetic algorithm (IGA) and its application to optimize the cutting parameters for predicting the surface roughness is proposed. Optimization of cutting parameters and prediction of surface roughness is concerned with a highly constrained nonlinear dynamic optimization problem that can only be fully solved by complete enumeration. The IGA incorporating a stochastic crossover technique and an artificial initial population scheme is developed to provide a faster search mechanism. The main advantage of the IGA approach is that the “curse of dimensionality” and a local optimal trap inherent in mathematical programming methods can be simultaneously overcome. The IGA equipped with an improved evolutionary direction operator and a migration operation can efficiently search and actively explore solutions. The IGA approach is applied to predict the influence of tool geometry (nose radius) and cutting parameters (feed, speed, and depth of cut) on surface roughness in dry turning of SS 420 materials conditions based on Taguchi's orthogonal array method. Additionally, the proposed algorithm was compared with the conventional genetic algorithm (CGA), and we found that the proposed IGA is more effective than previous approaches and applies the realistic machining problem more efficiently than does the conventional genetic algorithm (CGA).

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Correspondence to T. G. Ansalam Raj.

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Ansalam Raj, T.G., Narayanan Namboothiri, V.N. An Improved genetic algorithm for the prediction of surface finish in dry turning of SS 420 materials. Int J Adv Manuf Technol 47, 313–324 (2010). https://doi.org/10.1007/s00170-009-2197-2

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  • DOI: https://doi.org/10.1007/s00170-009-2197-2

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