Optimization of Hole quality parameters using TOPSIS method in drilling of GFRP composite

The attractive mechanical properties and light weight to strength ratio Glass Fiber Reinforced Plastic (GFRP) composites are preferred in automobile aerospace industries. Drilling process is one of the basic important manufacturing processes. GFRP its issues with hole quality fiber crack, roughness surface, dimensional error delamination. In this work, effect three different drill (Slot type, twist type brad type) parameters (machining speed feed rate) on analyzed. Hole parameters, chosen roundness error, machined area, delamination factor diameter deviation. Simultaneous optimization multiple objectives difficult task. Technique for Order Preference by Similarity Ideal Solution (TOPSIS) used minimize during drilling composite. result revealed that spur higher range spindle was provided less drilled holes. Also, TOPSIS procedure has minimum computational time because steps highly preferrable various decision-making problems industry. directly influencing assembly accuracy minimization one.