Experımental Research Of Perıpheral Mıllıng Problems On Glass Fıber Reınforced Polymer Composıtes (Gfrp

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Thesis Type: Postgraduate

Institution Of The Thesis: Gazi Üniversitesi, Fen Bilimleri Enstitüsü, Turkey

Approval Date: 2019

Student: OSMAN KARAKADIOĞLU

Supervisor: ULVİ ŞEKER

Open Archive Collection: AVESIS Open Access Collection

Abstract:

In this work, peripheral milling of glass fiber reinforced polymer composite material is researched with different geometric shaped cutting tools. Experiments are done at CNC vertical machining center. Three different geometry shaped (standard) end-mill (T1), mill with various cutting tool which called hedgehog' (T2) and both way spiral helix mill with spiral canals (T3) used for experiment. In the experiments, three different cutting speed (90, 130 and 170 m/min) and three different feeding rate (0,1, 0,15 and 0,2 mm/rev) were used. Constants are chosen 10 mm for deep of cut (ap) and 5 mm side cutting amount (ae) . Used tools are named Tool Set 1, Tool Set 2 and Tool Set 3. The sets used as T1, T2 and T3 at tables. The effect of cutting force, surface roughness, cutting moments and delamination wideness are researched. When experimental values considered increased, cutting speed and increased feeding rate, the cutting force increased too. When we compare the cutting tool geometries, the least shear force obtained with left and right helix canalled, both way mill which coded T3. Respect to increased cutting speed and feeding rate, average of surface smoothness is stable while using T1 and T3 tool sets. Comparison of cutting tools' geometries shows T3 coded cutting set creates the least cutting moment. Delamination was not obtained after the experiments. The data sets which obtained from experiments are evaluated at analysis of variance with Minitab data analysis softwares full factorial experiment design module. After the analysis it could be said that, the most efficient experiment parameter is tool set geometry.