원형 톱날의 형태와 마모가 유리 탄소섬유 하이브리드 복합재료의 절단 품질에미치는 영향

Abstract

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