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<p>This experimental study focuses on the effects of boron carbide (B<sub>4</sub>C) and graphite (Gr) filled Carbon fiber reinforced composites (CFRP) on mechanical properties, wear behavior and drilling performance. Tensile, bending, adhesive wear and machinability tests were applied to CFRP composites produced by hand lay-up method using two different filler types and three different filler ratios. In addition, SEM images of the deformations occurring on the sample surface after the wear test were analyzed and interpreted. B<sub>4</sub>C and Gr fillers decreased the tensile stress of CFRP composite while increasing the flexural strength. The increase in the filling ratio had a negative effect on the tensile strength. The flexural strength increased up to 10% filling ratio for both filling types. It was observed that Gr-filled composites exhibited superior wear performance than B<sub>4</sub>C-filled composites. The lowest wear rate was obtained in 10% filled composites. The increase in load provided the friction coefficient to decrease. In general, it was found that delamination in CFRP composites increased with higher cutting speeds and decreased with higher feed rates. In CFRP composites, thrust forces (Ffs) are directly proportional to feed speed, whereas they are inversely proportional to cutting speed. In general, it has been observed that the delamination, Ffs, moment and vibration measurements during the drilling of Gr filled CFRP composites show better performance compared to BC filled CFRP composites.</p>

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Synergistic effect of micro B4C and Gr fillers on drilling, wear and mechanical characteristic of CFRP composites

  • 期刊论文

  • 发表日期：

    2025年12月27日

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  • HÜSEYİN GÜRBÜZ,
  • MEHMET EMİN DEMİR,
  • ŞEHMUS BADAY,
  • İBRAHIM HALIL AKCAN

摘要

This experimental study focuses on the effects of boron carbide (B4C) and graphite (Gr) filled Carbon fiber reinforced composites (CFRP) on mechanical properties, wear behavior and drilling performance. Tensile, bending, adhesive wear and machinability tests were applied to CFRP composites produced by hand lay-up method using two different filler types and three different filler ratios. In addition, SEM images of the deformations occurring on the sample surface after the wear test were analyzed and interpreted. B4C and Gr fillers decreased the tensile stress of CFRP composite while increasing the flexural strength. The increase in the filling ratio had a negative effect on the tensile strength. The flexural strength increased up to 10% filling ratio for both filling types. It was observed that Gr-filled composites exhibited superior wear performance than B4C-filled composites. The lowest wear rate was obtained in 10% filled composites. The increase in load provided the friction coefficient to decrease. In general, it was found that delamination in CFRP composites increased with higher cutting speeds and decreased with higher feed rates. In CFRP composites, thrust forces (Ffs) are directly proportional to feed speed, whereas they are inversely proportional to cutting speed. In general, it has been observed that the delamination, Ffs, moment and vibration measurements during the drilling of Gr filled CFRP composites show better performance compared to BC filled CFRP composites.