Surface morphology characterization of unidirectional carbon fibre reinforced plastic machined by peripheral milling  

作　　者：Chongyan CAI Jiaqiang DANG Qinglong AN Weiwei MING Ming CHEN 

机构地区：[1]School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Chinese Journal of Aeronautics》2022年第2期361-375,共15页中国航空学报（英文版）

基　　金：supported by the National Key R&D Program of China(No.2020YFB2010600)。

摘　　要：This paper aims to characterise surface morphology and 3D roughness parameters of unidirectional carbon fibre reinforced plastic(UD-CFRP)milled at 0°,45°,90°,and 135°fibre orientation angles(FOAs).Side milling experiments are conducted on UD-CFRP laminates.Surface damage forms and texture direction of milled surface are analysed.Spatial frequency of defects on CFRP surface is quantitatively determined using radially averaged 2D PSD.The kinematicdynamic surface topography is reconstructed considering feed,runout and vibration,then the ideal roughness parameters,S_(a),S_(q),S_(sk),and S_(ku)are calculated and compared with the measured ones,finally the material factor-induced roughness components are quantified.Results show that CFRP surface has no regular feed marks.The frequency of fibre breakage or surface defects is greater than tooth passing frequency.FOAs sorted by their average S_(a)in descending order is135°>90°>45°>0°,where surface defects contribute 93.9%,77.1%,73.2%,72.2%of the total roughness respectively,which suggests that surface defects show a more important role than tool kinematics and vibration in formation of milled surface.The negative Skewness(Ssk<0)and high Kurtosis(S_(ku)=4.0–11.5)of milled surface signify porosity and the presence of many anomalous deep valleys in milled surface,respectively.

关 键 词：Carbon fibre reinforced plastic(CFRP) Surface characterization Surface morphology Surface roughness Surface texture 

分 类 号：V261.23[航空宇航科学与技术—航空宇航制造工程]