碳纤维增强热塑性复合材料的变温单点飞切去除特性  

Material removal characteristics of variable temperature single-abrasive scratch of carbon fiber reinforced thermoplastic composites

作　　者：鲍永杰 殷国运 郑植 杨宇星 陈晨 程东[1] BAO Yongjie;YIN Guoyun;ZHENG Zhi;YANG Yuxing;CHEN Chen;CHENG Dong(Marine Engineering College,Dalian Maritime University,Dalian 116026,China;Naval Architecture and Ocean Engineering College,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026 [2]大连海事大学船舶与海洋工程学院,辽宁大连116026

出　　处：《浙江大学学报(工学版)》2025年第3期616-625,共10页Journal of Zhejiang University:Engineering Science

基　　金：国家自然科学基金资助项目(52301359,U21A20165,52442104);大连市科技创新基金资助项目(2022JJ12GX033);辽宁省应用基础研究计划资助项目(2022JH2/101300221);大连海事大学科研创新团队资助项目(3132023513).

摘　　要：基于切削温度模拟与单点飞切试验研究碳纤维增强热塑性复合材料(CFRTP)的力热变化规律及其去除特性,分析不同纤维角度和切削温度下CFRTP去除过程和损伤特点.采用单点飞切试验开展CFRTP表面损伤特性研究,通过改变工艺参数、纤维方向和材料加热温度,分析切削力热的变化趋势以及温度对材料去除的影响.当飞切速度从3 m/s增大到7 m/s时,切向力和法向力分别增大130.60%和147.80%;当飞切深度从0.05 mm增加到0.10mm时,切向力和法向力分别增大72.44%和58.13%;当纤维角度从0°增大到30°、45°、60°、90°时,切向力分别增大12.50%、37.50%、75.00%、137.50%.CFRTP在20.0℃下以剪切破坏为主,在高温下以拉伸破坏为主且易出现分层和纤维拉拔现象.随切削温度升高,热塑性树脂软化,CFRTP层间强度和承载性能降低,切削力下降,有效切断的纤维数量降低,加工表面质量变差.Based on the cutting temperature simulation and the single-abrasive scratch test,the cutting force variation and heat variation laws of carbon fiber reinforced thermoplastic composites(CFRTP)as well as its removal characteristics were studied,and the removal process and the damage characteristics of CFRTP with different fiber angles and cutting temperatures were analyzed.For investigating the surface damage characteristics of CFRTP,single-abrasive scratch tests were conducted,and the variation trends of cutting force and heat,as well as the effect of temperature on material removal was analyzed,by changing the cutting process parameters,fiber directions and material heating temperatures.As the single-abrasive scratch speed increased from 3 m/s to 7 m/s,the tangential force and normal force increased by 130.60%and 147.80%,respectively;as the single-abrasive scratch depth increased from 0.05 mm to 0.10 mm,the tangential force and normal force increased by 72.44%and 58.13%,respectively;as the fiber angle increased from 0°to 30°,45°,60°,and 90°,the tangential force increased by 12.50%,37.50%,75.00%,and 137.50%,respectively.CFRTP was primarily characterized by the shear damage at 20.0℃,while the tensile damage dominated at high temperatures,accompanied by the delamination and fiber pull-out phenomena.As the cutting temperature increased,the thermoplastic resin softened,which reduced the interlaminar strength and the bearing performance of CFRTP,leading to a decrease in cutting force and a reduction in the number of effectively severed fibers so that a deterioration in the machining surface quality.

关 键 词：碳纤维增强热塑性复合材料(CFRTP) 单点飞切试验 切削温度模拟 去除特性 金刚石磨粒 

分 类 号：TB332[一般工业技术—材料科学与工程]