A Study on Machining Performances of Micro-Drilling of Multi-Directional Carbon Fiber Reinforced Plastic (MD-CFRP) Based on Nano-Solid Dry Lubrication Using Graphene NanoPlatelets

Materials

JinWoo Kim¹  Jaehun Jeon¹  Jungsoo Nam²  SangWon Lee³ 

[1] Department of Mechanical Engineering, Graduate School, Sungkyunkwan University, Suwon-si 16419, Korea;Intelligent Manufacturing System R&D Department, Korea Institute of Industrial Technology, Cheonan-si 31056, Korea;School of Mechanical Engineering, Sungkyunkwan University, Suwon-si 16419, Korea;

关键词: micro-drilling;    multi-directional carbon fiber-reinforced plastic (MD-CFRP);    nano-solid dry lubrication;    tribological behavior;    machining performance;    graphene nanoplatelets;   

DOI  :  10.3390/ma14030685

来源: DOAJ

【 摘 要 】

The objective of this study is to investigate the tribological behavior of graphene nanoplatelets (xGnPs) as nano-solid lubricants, and to evaluate their applicability to the micro-drilling of multi-directional carbon fiber-reinforced plastic (MD-CFRP). To verify the tribological effect of nano-solid lubricants, three kinds of xGnPs (xGnP C-750, xGnP M-5, and xGnP H-5), multiwall carbon nanotubes (MWCNTs), and hBN are compared by the ball-on-plate test. Of these, three xGnPs are selected as nano-solid lubricants to investigate the micro-drilling performance of MD-CFRP using nano-solid dry lubrication, and the experimental results demonstrate that all xGnPs can enhance lubrication action in terms of surface quality (delamination, uncut fiber, and inner surface) and tool wear. In particular, larger graphene nanoplatelets (xGnP M-5 and xGnP H-5) are superior to the smaller one (xGnP C-750) by guaranteeing enhanced sliding action between the tool grain and the CFRP composite.

【 授权许可】

Unknown