Abstract
The edge milling process of carbon fiber-reinforced plastics (CFRPs) is often accompanied by delamination and burrs on slot edges of the top layer. These damages impact on processing quality, processing efficiency, strength, and fatigue life of the materials, etc. To investigate the occurrence of these damages, the analytical cutting model for a single fiber of the top layer is established based on the Winkler elastic foundation beam theory. The critical fiber cutting angles and the corresponding engagement angles with different initial fiber orientations are predicted. Then, the milling experiments with the initial fiber orientations θ0 = 90° are carried out. The results show that the occurrences of the burrs and delamination can be correctly predicted. The suitable initial fiber orientations are chosen in the range from 30 to 60° for the smoother slot edges. There are two burr occurrence zones (BOZs) when θ0 = 90°. The delamination-inhibited zone (DIZ) is usually in the burr occurrence zone (BOZ).
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Special thanks to the National Science Foundation of China (No. 51675285) for funding this work.
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Su, F., Yuan, J., Sun, F. et al. Analytical cutting model for a single fiber to investigate the occurrences of the surface damages in milling of CFRP. Int J Adv Manuf Technol 96, 2671–2685 (2018). https://doi.org/10.1007/s00170-018-1797-0
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DOI: https://doi.org/10.1007/s00170-018-1797-0