GENETIC ALGORITHM-ASSISTED ARTIFICIAL NEURAL NETWORK FOR THE ESTIMATION OF DRILLING PARAMETERS OF MAGNESIUM AZ91 IN VERTICAL MILLING MACHINE

M. Varatharajulu, G. Jayaprakash, N. Baskar and A. Saravanan
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M. Varatharajulu: Department of Production Engineering, National Institute of Technology, Tiruchirappalli 600 015, India
G. Jayaprakash: #x2020;Department of Mechanical Engineering, Saranathan College of Engineering, Tiruchirapalli 620 012, India
N. Baskar: #x2020;Department of Mechanical Engineering, Saranathan College of Engineering, Tiruchirapalli 620 012, India
A. Saravanan: #x2020;Department of Mechanical Engineering, Saranathan College of Engineering, Tiruchirapalli 620 012, India

Surface Review and Letters (SRL), 2020, vol. 27, issue 10, 1-15

Abstract: The selection of appropriate drilling parameters is essential for improving productivity and part quality, therefore, this work mainly concentrates on the investigation of drilling time, burr height, burr thickness, roundness and surface roughness. The drilling experiments were carried out on Magnesium (Mg) AZ91 with High Speed Steel (HSS) tool using the Vertical Milling Machine (VMM). The parameters reckoned are spindle speed and feed rate. Artificial Neural Network (ANN) was concerned with the building of the model that will be used to forecast the responses following the consideration of Response Surface Methodology (RSM). Conventional method of modeling (RSM) yields poorer results which redirected the study with ANN. The Genetic Algorithm (GA)-based ANN has been reckoned for developing the model. With two nodes in the parameter layer and seven nodes in the response layer, six different networks were constructed using variety of nodes in the hidden layers which are 2–6–7, 2–7–7, 2–8–7, 2–6–6–7, 2–7–6–7 and 2–8–6–7. It is observed that the 2–8–7 network offers the best ANN model in predicting the various responses. The prediction results ensure the reliability of the ANN model to analyze the effect of drilling parameters over the various responses.

Keywords: Genetic algorithm; artificial neural network; magnesium AZ91; drilling parameters; machining time; burr development; roundness; surface roughness (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19502214

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