脉冲激光加工碳纤维复合材料板材的数值模拟与实验优化  

Numerical Simulation and Experimental Optimization of Pulse Laser Processing Carbon Fiber Reinforced Polymer Plate

作　　者：蔡颂[1,2] 宋金潮 陈达 文跃兵 何志坚 陶能如 何国旗 Cai Song;Song Jinchao;Chen Da;Wen Yuebing;He Zhijian;Tao Nengru;He Guoqi(School of Mechanical Engineering,Hunan University of Technology,Zhuzhou 412000,Hunan,China;School of Intelligent Manufacturing,Hunan First Normal University,Changsha 430100,Hunan,China)

机构地区：[1]湖南工业大学机械工程学院,湖南株洲412000 [2]湖南第一师范学院智能制造学院,湖南长沙430100

出　　处：《光学学报》2024年第3期166-178,共13页Acta Optica Sinica

基　　金：国家自然科学基金(51705141,51975192);中国博士后科学基金(2019T120650);湖南省自然科学基金省市联合基金(2021JJ50033);湖南省自然科学基金(2019JJ40075);湖北省自然科学委员会(20199CFB637);湖南省教育厅科研项目(17C0472,18C1064);株洲市科技计划项目([2018]61)。

摘　　要：利用激光线扫描方式建立丝状高斯热源的传热模型,并对其进行数值分析,得到脉冲激光烧蚀碳纤维的演化规律。对碳纤维复合材料(CFRP)板材进行激光烧蚀实验研究以验证所提模型的可行性。结果表明:当激光功率为9 W、激光扫描速度为200 mm/s时,板材表面绝大多数树脂被蒸发,表面粗糙度降至7.20μm,表征数据稳定性的样本方差为1.889。实验证明了该理论模型的正确性和可行性,为CFRP材料的激光加工研究提供了参考。Objective The thermal properties during pulse laser processing of carbon fiber reinforced polymer(CFRP)are significant for optimizing process parameters and strategies.An important factor in laser ablation of CFRP materials is the temperature rise caused by carbon fiber absorption of light.However,most of them employ computer-aided design software to simulate the internal temperature field of materials presently,with few underlying algorithms for heat transfer simulation.We study the ablation of the CFRP plate by optical fiber pulse infrared laser,build a new heat transfer model,and carry out the numerical analysis and the laser ablation experiment of the CFRP plate.The experimental results show that the theoretical model is correct and feasible,thus providing references for laser processing research of CFRP materials.Methods During laser CFRP plate processing,the laser beams have a certain moving speed.According to this characteristic,a linear Gauss heat source is proposed to simulate the moving temperature field of laser ablation.Based on the Fourier heat transfer model,the heat transfer physical model of the nanosecond pulse laser processing CFRP plate is built,and the finite difference time domain method is adopted to analyze the model.The laser ablation of the isosceles triangle pattern in a 0.5 mm thick CFRP plate is conducted by nanosecond pulse lasers.Then,the surface roughness data after ablation is obtained by a surface roughness tester.According to the above experimental results,we verify the correctness and feasibility of the model and obtain sound process parameters of laser processing CFRP.Results and Discussions The MATLAB numerical analysis temperature simulation results and comparative analysis on corresponding parameters of the ultra-depth-of-field photos are presented.Fig.10(a)shows the surface morphology of the CFRP plate when the laser power is 1 W.At this time,the maximum temperature of the material surface[470 K,Fig.1(a)]is close to the resin decomposition temperature.The resin presents a m

关 键 词：激光光学 碳纤维复合材料 脉冲激光 激光烧蚀 传热模型 表面粗糙度 

分 类 号：TN249[电子电信—物理电子学] TB332[一般工业技术—材料科学与工程]