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논문 기본 정보

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저자정보
Kim, Dave (School of Engineering and Computer Science, Washington State University) Beal, Aaron (Epic) Kang, Kiweon (School of Mechanical, Automotive, Naval Architecture and Ocean Engineering, Kunsan National University) Kim, Sang-Young (School of Mechanical, Automotive, Naval Architecture and Ocean Engineering, Kunsan National University)
저널정보
한국탄소학회 Carbon letters Carbon letters 제23권
발행연도
2017.1
수록면
1 - 8 (8page)

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초록· 키워드

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Polycrystalline diamond (PCD) tools possessing high hardness and abrasive wear resistance are particularly suited for drilling of carbon fiber reinforced plastic (CFRP) composites, where tool life and consistent hole quality are important. While PCD presents superior performance when drilling CFRP, it is unclear how it performs when drilling multi-stack materials such as CFRP-titanium (Ti) stacks. This comparative study aims to investigate drilling of a Ti plate stacked on a CFRP panel when using PCD tools. The first sequence of the drilling experiments was to drill 20 holes in CFRP only. CFRP-Ti stacks were then drilled for the next 20 holes with the same drill bit. CFRP holes and CFRP-Ti stack holes were evaluated in terms of machined hole quality. The main tool wear mechanism of PCD drills is micro-fractures that occur when machining the Ti plate of the stack. Tool wear increases the instability and the operation temperature when machining the Ti plate. This results in high drilling forces, large hole diameter errors, high surface roughness, wider CFRP exit thermal damage, and taller exit Ti burrs.

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