Review on characterization, impacts and optimization of EDM parameters on composite structure in additive manufacturing

Recent advances in metallurgy and ceramics have changed manufacturing. EDM used electrical discharges to accurately and complexly manufacture conductive materials. Novel developments in ceramic materials and metallurgy have allowed the fabrication of reliable, cheap, and economically valuable components for many sectors. EDM is the most flexible and cost-effective way to make complex conductive shapes and curves. The current review of literature assesses how mechanical, chemical, and thermal material removal influences surface topography and machining. Several dielectric medium properties are being researched. It uses additively built electrode material to evaluate non-conductive and conductive ceramic composites’ surface texturing, mechanical, electrical, and geometrical characteristics. Comparing electrical discharge machines’ performance metrics and characteristics in composite materials shows their disparities. Advanced conductive materials are being studied for their unexpected effects on EDM and potential applications. Design of experiments, analysis of variance, response surface methodology, Taguchi with grey relational analysis, and others may enhance composite material research and EDM. In addition, additive, hybrid and biomedical EDM applications are investigated. Direct metal laser sintering creates alternate electrodes. TWR, MRR and surface finish are equivalent or superior. Additive electrodes’ advantages need further study and process-parameter modification to provide consistent performance with different work piece materials and EDM settings.