Deposition of Tungsten and Copper Particle on CFRP Composite

This article describes the deposition of material onto the surfaces of the carbon fiber reinforced polymers (CFRP) material. For this purpose, powder metallurgical (P/M) green compact tool of tungsten-copper (W–Cu) particle is used in Electro Discharge Machining (EDM) process. The metal particles of P/M compact tool are transferred to the CFRP work surface under the reverse polarity. The material transfer rate (MTR) and tool wear rate (TWR) are observed by varying the process parameters (compact load, current, pulse on-time) in the suitable machining range. Grey relational analysis (GRA) is performed to determine the multi-objective optimal setting. Analysis of variance (ANOVA) and effect of factors in grey relational grade are conducted to determine the contribution of each factor to the multi optimal level. The experimental result shows that the multi optimum setting is obtained at compact load of 5 tons, current of 6A and pulse on-time of 1000 µs. Current is the most dominant factor whereas, pulse on-time is least dominant factor in multi optimal setting.