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Pareto optimization of WEDM process parameters for machining a NiTi shape memory alloy using a combined approach of RsM and heat transfer search algorithm

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Advances in Manufacturing 2021年第1期9卷 64-80页

作者： Rakesh Chaudhari Jay J.Vora s.s.mani prabu I.A.Palani Vivek K.Patel D.M.Parikh Department of Mechanical Engineering School of TechnologyPandit Deendayal Petroleum UniversityRaisanGandhinagar 382007India Metallurgy Engineering and Materials science Indian Institute of Technology IndoreIndore 453552India Discipline of Mechanical Engineering Indian Institute of Technology IndoreIndore 453552India Department of Industrial Engineering School of TechnologyPandit Deendayal Petroleum UniversityRaisanGandhinagar 382007India

Machining of shape memory alloys(sMAs)without losing the shape memory effect could immensely extend their ***,the wire electric discharge machining process was used to machine NiTi—a shape memory *** experimental methodology was designed using a Box-Behnken design approach of the response surface *** effects of input variables including pulse on time,pulse off time,and current were investigated on the material removal rate,surface roughness,and *** tests were performed to check the robustness of the generated empirical *** of the process parameters was performed using a newly formulated,highly efficient heat transfer search *** tests were conducted and extended for analyzing the retention of the shape memory effect of the machined surface by differential scanning *** addition,2D and 3D Pareto curves were generated that indicated the trade-offs between the selected output variables during the simultaneous output variables using the multi-objective heat transfer search *** optimization route yielded encouraging *** objective optimization yielded a maximum material removal rate of 1.49 mm^(3)/s,maximum microhardness 462.52 HVN,and minimum surface roughness 0.11μ*** Pareto curves showed conflicting effects during the wire electric discharge machining of the shape memory alloy and presented a set of optimal non-dominant *** shape memory alloy machined using the optimized process parameters even indicated a shape memory effect similar to that of the starting base material.

关键词： shape memory alloy(sMA) Nitinol Wire electrical discharge machining(WEDM) Heat transfer search algorithm Differential scanning calorimetry(DsC)test shape memory effect

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