A PARAMETRIC STUDY FOR DRILLING HIGH QUALITY HOLES ON GLASS FIBER COMPOSITES

Authors : Sinan KESRİKLİOĞLU, Cagatay YİLMAZ

Pages : 26-32

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Publication Date : 2022-06-30

Article Type : Research Paper

Abstract :The objective of this study is to investigate the effect of cutting parameters on the quality of holes drilled in a glass fiber reinforced thermoset polymer with the delamination factor defined as the ratio of intended hole diameter to the diameter of the maximum area which contains both hole and delaminated area. For this purpose, Taguchi`s L9 orthogonal array was used to design the experiments and optimize the drilling parameters. 5 mm twist drill bits were used to drill the holes at various feeds and spindle speeds. The maximum diameters on the inlet and outlet sides of the holes drilled into the composite plates were then measured with an optical microscope to analyze the influence of the drilling parameters on the machining damage. The smallest delaminated area on the front and back sides of the composite plate was achieved with the lowest feed insert ignore into journalissuearticles values(0.05 mm/rev); for the drilling parameters used in this study. Even though the spindle speed was increased from 318 rpm to 2930 rpm at a constant feed of 0.05 mm/rev, it reduces the maximum diameter on the front and back sides by 9
Keywords : Drilling, Composite, Hole Quality, Glass Fiber, Delamination