This paper aims to characterise the machining damage in epoxy composites reinforced by unidirectional carbon fibres when subjected to single-point cutting with different rake angles. It is expected that the understanding achieved will offer insight into multi-point cutting, such as grinding. The degree of damage of a machined surface was determined by examining its surface and subsurface. The effect of rake angle of cutting tools was studied against fibre orientation, cutting force, depth of cut, surface roughness and subsurface damage. A wide range of rake angle from -20° to 40° was employed in the investigation. It was found that cracking under machined surfaces was dependent on the cutting depth and fibre orientation. The study offered a deeper understanding of the mechanism of damage and provided a useful guideline for the design of FRP machining.
展开▼
