孙士勇

个人信息Personal Information

副教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:机械工程学院

学科:机械制造及其自动化. 机械设计及理论

办公地点:大连理工大学机械工程学院知方楼5118

联系方式:13889477112 QQ:21135101

电子邮箱:sunshy@dlut.edu.cn

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Characterization of dynamic forces in orthogonal cutting of CFRP

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论文类型:会议论文

发表时间:2016-06-26

收录刊物:EI

摘要:This work deals with the characterization of the dynamic cutting forces and the chip formation in the orthogonal cutting of CFRP. The time series of the dynamic cutting forces are acquired by a force sensor. In experiments, relatively stable and undulate type force signals are observed for different fiber orientations. Chip formation mechanism is discussed based on the in-situ observation. There are three types of chip formation for different cutting angles: Delamination-dominant, Bending-dominant, Cutting-dominant. Furthermore, the dynamic signals are processed by the Fast Fourier Transform technique to study the frequency spectrum features for different cutting angles. The chipping time is calculated by the characteristic frequency of the cutting force. The chipping time for 135° cutting angle is the longest with the largest force amplitude. Finally, the failure processes in chip formation are discussed based on the local characterization of the cutting force. © 2016, European Conference on Composite Materials, ECCM. All rights reserved.