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Experimental and Analytical Study of Cutting Force and Temperature in Drilling of CF/PEEK Composite

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Abstract:

Carbon fiber reinforced thermoplastic (CFRTP), such as carbon fiber reinforced polyetheretherketone (CF/PEEK), are applied in aerospace structures because of their high specific strength and recyclability. In this study, cutting tests were conducted to investigate cutting force in drilling of CF/PEEK composites. The lower cutting force was measured at the higher spindle speed. Temperature distributions on the exit side of the hole were compared between two spindle speeds, the temperature at high spindle speed indicates a higher value. The different conditions on machined hole walls were observed between the two spindle speeds. Then, an energy based force model was applied to analyze the thrust and torque during drilling, in which the cutting edge was discretized, and the chip flow was determined to minimize cutting energy. Based on the predicted shear and friction works, a finite difference thermal analysis was performed to evaluate temperature distributions in the tool, chip, and workpiece. The analysis indicated that higher spindle speed leads to an increase in cutting temperature. The results suggest that temperature-dependent behavior of the thermoplastic matrix may influence the shear stress on the shear plane and thereby contribute to the reduction in cutting force at the higher spindle speed.

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Periodical:

Defect and Diffusion Forum (Volume 450)

Pages:

83-91

DOI:

https://doi.org/10.4028/p-p7iF0w

Citation:

Cite this paper

Online since:

April 2026

Authors:

Shoichi Tamura*, Takashi Matsumura

Keywords:

Cutting Force, Temperature Distribution, Thermoplastic

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Creative Commons CC BY 4.0

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* - Corresponding Author

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