Ultrafast Feed Drilling of Carbon Fiber-Reinforced Thermoplastics

Yasuhiro Kakinuma, Takuki Ishida, Ryo Koike, Heiner Klemme, Berend Denkena, Tojiro Aoyama

Research output: Contribution to journalConference articlepeer-review

26 Citations (Scopus)


Carbon fiber-reinforced thermoplastics (CFRTP) are just beginning to be utilized for various applications such as aerospace, automobiles, and sporting goods in place of CFRPs, and the demand for through-hole drilling of CFRTPs is increasing. In this study, the machinability in drilling of CFRTPs under various conditions was experimentally analyzed in terms of the material properties, and a feasibility study of ultrafast feed drilling was conducted. The results showed that delamination at the outlet surface can be significantly suppressed during high rotational drilling when the feed rate is set to more than 3000 mm/min. By providing appropriate drilling conditions to prevent polymers in CFRTPs from softening, ultra-fast drilling of CFRTPs was successfully achieved under dry conditions.

Original languageEnglish
Pages (from-to)91-95
Number of pages5
JournalProcedia CIRP
Publication statusPublished - 2015
Event15th Machining Innovations Conference for Aerospace Industry, MIC 2015 - Garbsen, Germany
Duration: 2015 Nov 182015 Nov 19


  • Drilling
  • High-performance drilling

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering


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