Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Effect of the Circular Saw-Blade Type and Wear on the Cutting Quality of a Glass Carbon-Fiber Hybrid Composite

원형 톱날의 형태와 마모가 유리 탄소섬유 하이브리드 복합재료의 절단 품질에 미치는 영향

  • Baek, Jong-Hyun (School of Mechanical Engineering, Gyeongsang National University) ;
  • Joo, Chang-Min (School of Mechanical Engineering, Gyeongsang National University) ;
  • Kim, Su-Jin (School of Mechanical Engineering, Gyeongsang National University) ;
  • Park, Yoon-Ok (Pyeongchang Carbide Co.)
  • 백종현 (경상국립대학교 기계공학부) ;
  • 주창민 (경상국립대학교 기계공학부) ;
  • 김수진 (경상국립대학교 기계공학부) ;
  • 박윤옥 (평창초경)
  • Received : 2021.07.16
  • Accepted : 2021.08.05
  • Published : 2021.10.30
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Abstract

A circular saw is an effective tool for cutting glass and carbon-fiber hybrid composites. This study investigated tool wear and cut quality when reusing saw blades. The carbide saws wear four times faster than the new ones, and polycrystalline diamond (PCD) is very resistant to tool wear, except at the end of its lifespan. The cut cross-section quality is affected by the blade type, tool wear, and spindle speed. Alternate top bevel (ATB)-type blades are suitable for cutting fiber-reinforced plastics, but triple-chip grind (TCG)-type blades are unsuitable because they cause fiber-pullout defects. Tool wear and low spindle speeds increase the occurrence of arc scratches, due to the rear saw blade. A microscopic examination showed that the burr, which is a mixture of fiber chips and epoxy matrix, was bonded on top, and glass-fiber delamination occurred on the bottom glass-fiber-reinforced polymer (GFRP) surface.

Keywords

Acknowledgement

이 논문은 2020년도 중소벤처기업부 생활혁신형 기술개발사업 연구비 지원에 의하여 연구되었음.

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