Indian Journal of Engineering & Materials Sciences

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Multi-objective optimization of TW-ECSM process parameters for machining of advanced non-conducting material


Affiliations
1 Department of Mechanical Engineering, Women Institute of Technology, Dehradun 248 007, India
2 Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee 247 667, India
3 Department of Mechanical Engineering, Netaji Subhas University of Technology, New Delhi 110 078, India
4 Department of Mechanical Engineering, Thapar Institute of Engineering and Technology, Patiala 147 004, India

Travelling wire electrochemical spark machining (TW-ECSM) is newly evolved and developed hybrid machining process for the machining of advanced non-conducting materials which possess significant values of the properties like high strength, high wear and fatigue resistance, high refractoriness and high strength to weight ratio, etc. The control parameters like voltage, wire feed rate, electrolyte concentration and inter-electrode gap were selected as Input Parameters and Material Removal Rate (MRR), and Surface Roughness (SR) were the corresponding output responses. In present work, for multiobjective optimization and purpose of better control of machining parameters, three approaches, grey-relational analysisprincipal component analysis (GRA-PCA), fuzzy logic and desirability function approach are used to determine the optimal combination of TW-ECSM process variables. Results of fuzzy logic and GRA-PCA approach are found comparable while desirability function approach is found to be capable of predicting the optimal responses at such levels of process variables also at which experiments are not performed. Consequences of the applied approach in the present work are also validated by conducting the confirmatory experiments and results are found in well agreement with the predicted results.
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Abstract Views: 155




  • Multi-objective optimization of TW-ECSM process parameters for machining of advanced non-conducting material

Abstract Views: 155  | 

Authors

Nav Rattan
Department of Mechanical Engineering, Women Institute of Technology, Dehradun 248 007, India
Rahul S Mulik
Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee 247 667, India
Aakanksha J Kaushik
Department of Mechanical Engineering, Netaji Subhas University of Technology, New Delhi 110 078, India
Satish Kumar Sharma
Department of Mechanical Engineering, Thapar Institute of Engineering and Technology, Patiala 147 004, India

Abstract


Travelling wire electrochemical spark machining (TW-ECSM) is newly evolved and developed hybrid machining process for the machining of advanced non-conducting materials which possess significant values of the properties like high strength, high wear and fatigue resistance, high refractoriness and high strength to weight ratio, etc. The control parameters like voltage, wire feed rate, electrolyte concentration and inter-electrode gap were selected as Input Parameters and Material Removal Rate (MRR), and Surface Roughness (SR) were the corresponding output responses. In present work, for multiobjective optimization and purpose of better control of machining parameters, three approaches, grey-relational analysisprincipal component analysis (GRA-PCA), fuzzy logic and desirability function approach are used to determine the optimal combination of TW-ECSM process variables. Results of fuzzy logic and GRA-PCA approach are found comparable while desirability function approach is found to be capable of predicting the optimal responses at such levels of process variables also at which experiments are not performed. Consequences of the applied approach in the present work are also validated by conducting the confirmatory experiments and results are found in well agreement with the predicted results.