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Naresh, N.
- Optimisation of Machining Parameters for Turning En16 Steel:Desirability Function Analysis and Anova
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Authors
Affiliations
1 Dept. of Mechanical Engineering, N.B.K.R. Institute of Science and Technology, Vidyanagar - 524413, Nellore, A.P., IN
1 Dept. of Mechanical Engineering, N.B.K.R. Institute of Science and Technology, Vidyanagar - 524413, Nellore, A.P., IN
Source
Research Journal of Engineering and Technology, Vol 5, No 1 (2014), Pagination: 25-32Abstract
This paper presents optimisation of machining parameters for turning EN16 steel using desirability function analysis (DFA). The experiments were conducted using Taguchi's L27 orthogonal array on CNC turning with tungsten carbide tool. The machining parameters such as, cutting speed, feed rate and depth of cut are optimised by multi-response considerations namely surface roughness and material removal rate. The optimal machining parameters have been determined by the composite desirability value obtained from the desirability function analysis, and significant contribution of parameters can then be determined by analysis of variance (ANOVA). The analysis of the result shows that the optimal combination for good surface roughness and high material removal rate are medium cutting speed, medium feed rate and high depth of cut. Confirmation test is also conducted to validate the test result. Experimental results have shown that machining performance can be improved effectively through this approach.Keywords
ANOVA, CNC Turning, Desirability Function Analysis, EN16 Steel, MRR, Surface Roughness.- Application of Desirability Based Hybrid Anfis Model for Optimization of Electro Discharge Machining of Hastealloy C-276
Abstract Views :190 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, Sree Vidyanikethan Engineering College, Tirupati, Andhra Pradesh, IN
1 Department of Mechanical Engineering, Sree Vidyanikethan Engineering College, Tirupati, Andhra Pradesh, IN
Source
Manufacturing Technology Today, Vol 17, No 7 (2018), Pagination: 32-43Abstract
Hastealloy C-276 is a difficult to machine superalloy and comprehensively employed in various engineering fields such as nuclear applications, aerospace and gas turbines. Hastealloy C-276 having better strength and poor thermal conductivity makes them difficult to machine materials which results in reduced life of the cutting tool and poor machinability by conventional methods of material removal. Advanced metal removal methods have evolved to accomplish those kind of needs and appealed to be an opposite alternative approach to traditional machining. Electro Discharge Machining (EDM) is considered as one of the nontraditional metal removal process which is especially adopted for machining of hard to machine materials. In this present investigation Spark Erosion Machining has been employed for machining of Haste Alloy C-276 with copper electrode by using Taguchi’s experimental design approach. Applied current (A), pulse on time (TON) and pulse off time (TOFF) were considered as the input process variables and the performance of spark erosion machining has been assessed by considering the performance measures such as material removal rate, surface roughness, overcut, form and orientation tolerance errors. The significance of process variables were analyzed by Analysis of Variance (ANOVA). Multi objective optimization has been performed by desirability function analysis to obtain better machining performance. In addition DFA based Adaptive Neuro Fuzzy Inference System (ANFIS) have been evolved to optimize the desired performance characteristics.Keywords
EDM, Haste Alloy, Taguchi’s Design, Desirability Function Analysis, ANFIS.References
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