Entity

Time filter

Source Type

Kānpur, India

Singh G.K.,Rama University | Thomas D.,Departmnt of Mechanical Engineering Manav Rachna University | Srivastava T.,Gautam Buddha University
Materials Today: Proceedings | Year: 2015

Wire electric discharge machining, a non-traditional machining process comprising zinc coated wire electrode, has been developed for machining of electrically conductive difficult-to-machine very hard materials. Modernization of mechanical industry has lead to increase in demand for hard and tough materials and, having wide applications in aircraft and rocket industries, is important from the quality of cut point of view. Keeping this in view, a hybrid approach of Taguchi method (TM) and principal component analysis (PCA) has been applied for multi-objective optimization (MOO) WEDM of AISI D3 tool steel to achieve better cut qualities within existing resources. The quality characteristics MRR, have been considered for simultaneous optimization. The input parameters considered are pulse on time .pulse off time, peak current and servo voltage. Initially, single-objective optimization has been performed using TM and then the signal-to-noise (S/N) ratios obtained from TM have been further used in PCA for multi-objective optimization. The results of MOO include the prediction of optimum input parameter level and their relative significance on multiple quality characteristics (MQC). © 2015 Elsevier Ltd. Source


Thomas D.,ManavRachna University | Kumar R.,P.A. College | Singh G.K.,Rama University | Sinha P.,P.A. College | Mishra S.,University of Sao Paulo
Materials Today: Proceedings | Year: 2015

Electric Discharge Machining (EDM) has been used for machining of electrically conductive difficult materials. Wire EDM is a kind of EDM where a wire is used to act as the tool and due to erosion, machining takes place. Generally, Brass and Copper wires were effectively used for machining but it was found that the productivity and characteristics for coated wires had better results hence coated wires (zinc) will be used. The study has been conducted for the optimization and design of WEDM process performed on the Tool Steel EN31. The major performance characteristic that is evaluated is Material Removal Rate (MRR). The corresponding parameters acting as the input are Current, Pulse on Time and Pulse off Time, Wire Tension. The central composite design is utilized to plan the experiment and Response Surface Methodology is implied and an experimental model has been developed. Analysis on machining characteristic of coated WEDM is made based on the developed model. The model has been verified and checked for adequacy. © 2015 Elsevier Ltd. Source


Thomas D.,Manav Rachna International University | Singh G.K.,Rama University | Mishra S.,University of Sao Paulo
Materials Today: Proceedings | Year: 2015

Electric Discharge Machining (EDM) has been used for machining of electrically conductive difficult materials and Wire EDM is a kind of EDM where a wire is used as the tool and machining takes place due to erosion. Usually, Copper and brass wires were effectively used for machining in WEDM but it was found that the productivity and characteristics for coated wires had better results hence zinc coated wires will be used. The study has been conducted for the modelling of a WEDM process performed on the Tool Steel EN31. Surface Roughness (SR) is the major performance characteristic that is evaluated. The corresponding parameters acting as the input are Current, Pulse on Time and Pulse off Time, Wire Tension. The central composite design is utilized to plan the experiment and Response Surface Methodology is implied and an experimental model has been developed. Analysis on machining characteristic of coated WEDM is made based on the developed model. The model has been verified and checked for adequacy. © 2015 Elsevier Ltd. Source


Sinha P.,P.A. College | Kumar R.,P.A. College | Singh G.K.,Rama University | Thomas D.,Departmnt of Mechanical Engineering Manav Rachna University
Materials Today: Proceedings | Year: 2015

Wire electric discharge machining, a non-traditional machining process comprising zinc coated wire electrode, has been developed for machining of electrically conductive difficult-to-machine very hard materials. Modernization of mechanical industry has lead to increase in demand for hard and tough materials and, having wide applications in aircraft and rocket industries, is important from the quality of cut point of view. Keeping this in view, a hybrid approach of Taguchi method (TM) and principal component analysis (PCA) has been applied for multi-objective optimization (MOO) WEDM of AISI D3 tool steel to achieve better cut qualities within existing resources. The three-quality characteristics MRR, Length of Cut, and Surface roughness have been considered for simultaneous optimization. The input parameters considered are pulse on time .pulse off time, peak current and servo voltage. Initially, single-objective optimization has been performed using TM and then the signal-to-noise (S/N) ratios obtained from TM have been further used in PCA for multi-objective optimization. The results of MOO include the prediction of optimum input parameter level and their relative significance on multiple quality characteristics (MQC). © 2015 Elsevier Ltd. Source

Discover hidden collaborations