Investigating the material removal mechanism and cutting performance in ultrasonic vibration-assisted milling of carbon fibre reinforced thermoplastic

被引:4
|
作者
Liu, Sinan [1 ]
Sun, Yu [2 ]
Du, Yu [2 ]
Zhang, Zhijun [1 ]
Wu, Xiaojie [1 ]
机构
[1] Tianjin Chengjian Univ, Sch Control & Mech Engn, Tianjin 300384, Peoples R China
[2] Tiangong Univ, Sch Mech Engn, Tianjin 300387, Peoples R China
关键词
CF; PEEK; ultrasonic-assisted milling; cutting force; milling temperature; surface quality; THERMOSET;
D O I
10.1088/2053-1591/acfb5f
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Carbon fibre reinforced thermoplastic (CFRTP) has emerged as a sustainable alternative to carbon fibre reinforced plastic (CFRP) due to its improved reparability and recyclability. CFRTP, particularly carbon fibre reinforced polyetheretherketone (CF/PEEK), is a high-performance material known for its excellent mechanical, thermal, and corrosion resistance properties, making it well-suited for extreme environments in civil aviation equipment. However, machining processes such as milling often result in defects due to the material's high toughness and anisotropic nature. This study aims to investigate the material removal mechanism in ultrasonic-assisted milling (UAM) of CF/PEEK and compare the effects of fibre cutting angle (theta) and milling processes on milling performance. To simulate the fibre fracture mechanisms under different theta, finite element analysis (FEA) is employed. The results reveal different fracture modes, including bending, bending-shear, compression, and compression-shear, at various theta. Additionally, UAM demonstrates lower cutting forces and temperatures compared to conventional milling (CM). Notably, UAM greatly improves surface quality by reducing burr height and facilitating chip evacuation, while also enhancing surface integrity by minimizing cavity defects and fibre pull-out phenomena. These findings contribute to the development of low-damage machining methods that aim to achieve higher accuracy in CFRTP.
引用
收藏
页数:21
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