Multi-Response Optimization during the High-Speed Drilling of Composite Laminate Using the Grey Entropy Fuzzy Method (GEF)

The machining of glass-fiber-reinforced composites is complex due to their heterogeneous structures. Research has indicated that high-speed machining, at high spindle speeds and feed rates, not only increases productivity but also reduces drilling defects, such as delamination. However, there are several challenges with the heat generated during between drill tool chip contact surfaces can result in hole size errors. Therefore, it essential determine optimum parameters. This paper presents an innovative hybrid optimization approach called Grey Entropy Fuzzy. a combination entropy-based weight integrated Relation analysis fuzzy logic. With consideration all responses simultaneously, was obtained speed 12,000 rpm rate 0.02 mm/rev using bit point angle 118° diameter 6 mm.