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- W2808070842 abstract "Graphite and its composites have been widely used in various industrial fields. It has been generally accepted that, for positive rake angles, there is a significant increase in tension stress at the cutting zone during the machining of brittle materials, and cracks occur and spread easily, degrading the quality of the machined surface quality. However, it is found in this study that positive rake angles can improve the machined surface finish during the orthogonal cutting of graphite/polymer composites. Better machined surface finish is obtained for a larger rake angle. A finite element model is developed to reveal the mechanism of influence of the positive rake angle on the machined surface. Based on the effective stress field obtained from finite element analysis, it can be predicted that the crack initiates at the tool tip, subsequently propagates downward and forward, and later spreads gradually toward the free surface of the workpiece. A larger rake angle can promote crack propagation far from the machined surface. The crack initiation and propagation laws are validated by the edge-indentation experiments. In addition, the cutting force at various rake angles is investigated." @default.
- W2808070842 created "2018-06-21" @default.
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- W2808070842 date "2018-06-19" @default.
- W2808070842 modified "2023-10-11" @default.
- W2808070842 title "Rake Angle Effect on a Machined Surface in Orthogonal Cutting of Graphite/Polymer Composites" @default.
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- W2808070842 doi "https://doi.org/10.1155/2018/3601918" @default.
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