Call For Paper Volume:5 Issue:10 Oct'2018 |

Multiobjective optimization during wire EDM of WC-4.79%Co composite using controlled NSGA II

Publication Date : 17/01/2017


DOI : 10.21884/IJMTER.2017.4009.FCEIG

Author(s) :

shravan kumar yadav , Sachin Dev Barman , Uday Kumar Paliwal.


Volume/Issue :
Volume 4
,
Issue 1
(01 - 2017)



Abstract :

Wire EDM being an effective machining process for composite materials needs proper selection of control factors to get the desired performance characteristics. But due to conflicting nature of performance characteristics it is unfeasible to find a single combination of control factors because desired combination may vary from situation to situation. That is why it is preferred to find a set of combination of control factors. In this work an attempt has been made to find set of combination of control factors for each workpiece thickness. Taguchi based L18 orthogonal array has been used for conducting experiments. The performance characteristics considered are cutting rate and surface roughness. Workpiece thickness, peak current, pulse on time, pulse off time and wire feed rate are considered as input parameters. A mathematical model has been developed for each machining performance using least square method to create relationships between process factors and responses. Multi-objective optimization has been performed using controlled NSGA II to find a set of machining conditions for each thickness of workpiece using the obtained mathematical models as objective functions. The predicted results have been verified by conducting confirmation experiments.


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Multiobjective optimization during wire EDM of WC-4.79%Co composite using controlled NSGA II

January 14, 2017