Multi-Response Optimization of WEDM Process Parameters Using Taguchi Based Desirability Function Analysis

7th National Conference on Processing and Characterization of Materials

Majumder, Himadri^1 ; Maity, Kalipada^1

Department of Mechanical Engineering, National Institute of Technology, Rourkela Odisha

769008, India^1

关键词: Desirability function;    Experimental investigations;    Machining parameters;    Multi attribute decision making;    Multiresponse optimization;    NiTi shape memory alloys;    WEDM;    Wire electrical discharge machining;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/338/1/012004/pdf
DOI  :  10.1088/1757-899X/338/1/012004

来源: IOP

【 摘 要 】

Shape memory alloy has a unique capability to return to its original shape after physical deformation by applying heat or thermo-mechanical or magnetic load. In this experimental investigation, desirability function analysis (DFA), a multi-attribute decision making was utilized to find out the optimum input parameter setting during wire electrical discharge machining (WEDM) of Ni-Ti shape memory alloy. Four critical machining parameters, namely pulse on time (TON), pulse off time (TOFF), wire feed (WF) and wire tension (WT) were taken as machining inputs for the experiments to optimize three interconnected responses like cutting speed, kerf width, and surface roughness. Input parameter combination TON= 120 μs., TOFF= 55 μs., WF = 3 m/min. and WT = 8 kg-F were found to produce the optimum results. The optimum process parameters for each desired response were also attained using Taguchi's signal-to-noise ratio. Confirmation test has been done to validate the optimum machining parameter combination which affirmed DFA was a competent approach to select optimum input parameters for the ideal response quality for WEDM of Ni-Ti shape memory alloy.