Investigation of chip formation and fracture toughness in orthogonal cutting of UD-CFRP

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• 作者：Hao Li ; Xuda Qin ; Gaiyun He ; Yan Jin…
• 关键词：UD ; CFRP ; Orthogonal cutting ; Fracture toughness ; Chip formation
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：82
• 期：5-8
• 页码：1079-1088
• 全文大小：5,768 KB
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• 作者单位：Hao Li (1)
  Xuda Qin (1)
  Gaiyun He (1)
  Yan Jin (2)
  Dan Sun (2)
  Mark Price (2)
  
  1. Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin, 300072, China
  2. School of Mechanical and Aerospace Engineering, Queen University Belfast, Belfast, BT9 5AH, UK
  
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015

文摘

Features of chip formation can inform the mechanism of a machining process. In this paper, a series of orthogonal cutting experiments were carried out on unidirectional carbon fiber reinforced polymer (UD-CFRP) under cutting speed of 0.5 m/min. The specially designed orthogonal cutting tools and high-speed camera were used in this paper. Two main factors are found to influence the chip morphology, namely the depth of cut (DOC) and the fiber orientation (angle ݜ㩬 and the latter of which plays a more dominant role. Based on the investigation of chip formation, a new approach is proposed for predicting fracture toughness of the newly machined surface and the total energy consumption during CFRP orthogonal cutting is introduced as a function of the surface energy of machined surface, the energy consumed to overcome friction, and the energy for chip fracture. The results show that the proportion of energy spent on tool-chip friction is the greatest, and the proportions of energy spent on creating new surface decrease with the increasing of fiber angle.