A Review on Optimization of Process Parameters of EDM on Aluminum Metal Matrix Composites Using Various Optimization Techniques

Electrical discharge machining (EDM) is the unconventional machining operation, it is appropriate for processing of hard and brittle metals like metal matrix composites. Aluminum-based metal matrix composites (AMMCs) are broadly utilized in aviation and defense parts in the view of their leading properties like greater strength to weight ratio and greater stiffness to weight ratio. The present paper reviews the optimization of EDM process parameters like discharge current, pulse-off-time, duty factor, open circuit voltage(gap voltage) and pulse-on-time on the material removal rate (MRR) and surface roughness of the composite responses by utilizing various methods like Taguchi method, response surface methodology (RSM), gray relational approach (GRA), TOPSIS and genetic algorithm.