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To address the challenges in carbon fiber-reinforced polymer matrix composites (CFRP) such as anisotropy, low interlaminar toughness, and poor thermal conductivity of the resin, which lead to issues like burrs, tears, and delamination during drilling processes, this research investigates the inhibitory effect of surface layer reinforcement methods on drilling damage in CFRP laminates. Firstly, we prepared ordinary CFRP laminate samples, carbon cloth-reinforced samples, and glass cloth-reinforced samples, and conducted drilling tests on a machining test bench. Secondly, by systematically detecting and analyzing the quality of machined holes in various samples, the study examined the influence of surface layer reinforcement and rotational speed on drilling damage in CFRP. The results indicate that increasing rotational speed and surface layer enhancement can effectively improve hole-making quality. Additionally, the surface layer reinforcement method exhibits a certain inhibitory effect on hole diameter exceeding tolerance. This study provides valuable references for achieving high-quality drilling in CFRP.

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Research on Prevention of Drilling Defects for Composite Materials with Surface Layer Reinforcement

  • 会议论文

  • 发表日期：

    2026年

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  • Xinkang Zhou,
  • Xunjie Zhang,
  • Ao Wang,
  • Yupeng Chen,
  • Xin Zheng

摘要

To address the challenges in carbon fiber-reinforced polymer matrix composites (CFRP) such as anisotropy, low interlaminar toughness, and poor thermal conductivity of the resin, which lead to issues like burrs, tears, and delamination during drilling processes, this research investigates the inhibitory effect of surface layer reinforcement methods on drilling damage in CFRP laminates. Firstly, we prepared ordinary CFRP laminate samples, carbon cloth-reinforced samples, and glass cloth-reinforced samples, and conducted drilling tests on a machining test bench. Secondly, by systematically detecting and analyzing the quality of machined holes in various samples, the study examined the influence of surface layer reinforcement and rotational speed on drilling damage in CFRP. The results indicate that increasing rotational speed and surface layer enhancement can effectively improve hole-making quality. Additionally, the surface layer reinforcement method exhibits a certain inhibitory effect on hole diameter exceeding tolerance. This study provides valuable references for achieving high-quality drilling in CFRP.