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Applied Computational Intelligence and Soft Computing
Volume 2014 (2014), Article ID 293976, 12 pages
http://dx.doi.org/10.1155/2014/293976
Research Article

Forward and Reverse Process Models for the Squeeze Casting Process Using Neural Network Based Approaches

1Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal 575025, India
2Department of Mechanical Engineering, Chhatrapati Shivaji Institute of Technology, Durg, Chhattisgarh 491001, India

Received 17 May 2014; Accepted 30 September 2014; Published 27 October 2014

Academic Editor: R. Saravanan

Copyright © 2014 Manjunath Patel Gowdru Chandrashekarappa et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present research work is focussed to develop an intelligent system to establish the input-output relationship utilizing forward and reverse mappings of artificial neural networks. Forward mapping aims at predicting the density and secondary dendrite arm spacing (SDAS) from the known set of squeeze cast process parameters such as time delay, pressure duration, squeezes pressure, pouring temperature, and die temperature. An attempt is also made to meet the industrial requirements of developing the reverse model to predict the recommended squeeze cast parameters for the desired density and SDAS. Two different neural network based approaches have been proposed to carry out the said task, namely, back propagation neural network (BPNN) and genetic algorithm neural network (GA-NN). The batch mode of training is employed for both supervised learning networks and requires huge training data. The requirement of huge training data is generated artificially at random using regression equation derived through real experiments carried out earlier by the same authors. The performances of BPNN and GA-NN models are compared among themselves with those of regression for ten test cases. The results show that both models are capable of making better predictions and the models can be effectively used in shop floor in selection of most influential parameters for the desired outputs.