Journal ArticleDOI
Parametric optimisation of wire electrical discharge machining of γ titanium aluminide alloy through an artificial neural network model
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TLDR
In this paper, a feed-forward back-propagation neural network is developed to model the machining process, which is capable of predicting the response parameters as a function of six different control parameters, i.e. pulse on time, pulse off time, peak current, wire tension, dielectric flow rate and servo reference voltage.Abstract:
In the present research, wire electrical discharge machining (WEDM) of γ titanium aluminide is studied. Selection of optimum machining parameter combinations for obtaining higher cutting efficiency and accuracy is a challenging task in WEDM due to the presence of a large number of process variables and complicated stochastic process mechanisms. In general, no perfect combination exists that can simultaneously result in both the best cutting speed and the best surface finish quality. This paper presents an attempt to develop an appropriate machining strategy for a maximum process criteria yield. A feed-forward back-propagation neural network is developed to model the machining process. The three most important parameters – cutting speed, surface roughness and wire offset – have been considered as measures of the process performance. The model is capable of predicting the response parameters as a function of six different control parameters, i.e. pulse on time, pulse off time, peak current, wire tension, dielectric flow rate and servo reference voltage. Experimental results demonstrate that the machining model is suitable and the optimisation strategy satisfies practical requirements.read more
Citations
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Journal ArticleDOI
Delamination analysis in high speed drilling of carbon fiber reinforced plastics (CFRP) using artificial neural network model
S.R. Karnik,V.N. Gaitonde,J. Campos Rubio,A. Esteves Correia,Alexandre Mendes Abrão,J. Paulo Davim +5 more
TL;DR: In this article, a multilayer feed forward ANN architecture, trained using error-back propagation training algorithm (EBPTA), is employed for the analysis of delamination behavior as a function of drilling process parameters.
Journal ArticleDOI
Multi-response optimization of process parameters based on response surface methodology for pure titanium using WEDM process
TL;DR: In this article, an attempt has been made to model the four response variables, i.e., machining rate, surface roughness, dimensional deviation and wire wear ratio in WEDM process using response surface methodology.
Journal ArticleDOI
Design of experiments and focused grid search for neural network parameter optimization
Fabricio J. Pontes,G.F. Amorim,Pedro Paulo Balestrassi,Anderson Paulo de Paiva,João Roberto Ferreira +4 more
TL;DR: The proposed tuning method leads to significant reduction of roughness prediction errors in machining operations in comparison to techniques currently used, and constitutes an effective option for the systematic design models based on ANN for prediction of surface roughness, filling the gap reported in the literature.
Journal ArticleDOI
Wire electro-discharge machining of titanium alloy
TL;DR: In this paper, the effect of seven process parameters including pulse width, servo reference voltage, pulse current, and wire tension on process performance parameters (such as cutting speed, wire rupture and surface integrity) has been applied.
Journal ArticleDOI
A parametric study of pulsed Nd:YAG laser micro-drilling of gamma-titanium aluminide
TL;DR: In this article, the effect of different process parameters in the optimization of the YAG laser micro-drilling of gamma-titanium aluminide, a new material which has performed well in laboratory tests as well as in different fields of engineering, is investigated.
References
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Book
Neural Networks: A Comprehensive Foundation
TL;DR: Thorough, well-organized, and completely up to date, this book examines all the important aspects of this emerging technology, including the learning process, back-propagation learning, radial-basis function networks, self-organizing systems, modular networks, temporal processing and neurodynamics, and VLSI implementation of neural networks.
Book
Fundamentals of neural networks: architectures, algorithms, and applications
TL;DR: In this chapter seven Neural Nets based on Competition, Adaptive Resonance Theory, and Backpropagation Neural Net are studied.
Journal ArticleDOI
Determination of optimal cutting parameters in wire electrical discharge machining
Y.S. Tarng,S.C. Ma,L.K. Chung +2 more
TL;DR: In this article, a feed-forward neural network is used to associate the cutting parameters with the cutting performance and a simulated annealing (SA) algorithm is applied to the neural network for solving the optimal cutting parameters based on a performance index within the allowable working conditions.
Journal ArticleDOI
An analysis and optimisation of the geometrical inaccuracy due to wire lag phenomenon in WEDM
TL;DR: An extensive study of the wire lag phenomenon in wire-cut electrical discharge machining has been carried out and the trend of variation of the geometrical inaccuracy caused due to wire lag with various machine control parameters has been established in this paper.
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