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Comparison of Machining Defects by Cutting Condition in Hybird FRP Drilling

유리탄소섬유 하이브리드 복합재의 절삭 조건에 따른 가공 결함 비교

  • Baek, Jong-Hyun (School of Mechanical and Aerospace Engineering, Gyeongsang National University) ;
  • Kim, Su-Jin (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
  • 백종현 (경상국립대학교 기계항공공학부) ;
  • 김수진 (경상국립대학교 기계항공공학부)
  • Received : 2022.06.24
  • Accepted : 2022.08.10
  • Published : 2022.09.30

Abstract

Delamination and burr defects are important problems in drilling fiber reinforced plastics. A method for measuring FRP drilling defects has been studied. Delamination and burr factors were defined as the relative length or area. Using these factors, the effects of tool shape and drilling conditions on delamination and burr were studied. In this study, the defects that occur when drilling a glass-carbon fiber hybrid composite were compared in terms of three factors. In the glass-carbon fiber hybrid composite, the effects of the feed rate and tool point angle on the delamination and burr factors were similar to those in previous studies. The diameter of the tool did not affect the defect factor. A circular burr was generated in a drill tool with a point angle of 184°, and a relatively small deburring factor was observed compared with a tool with a point angle of 140°.

Keywords

Acknowledgement

정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구임(20214000000520, 자원순환(재제조)산업 고도화 인력양성.

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