基于CFRP纤维编织网格分块扫描的激光除胶工艺算法

Laser resin removal algorithm based on the braided mesh of CFRP materials

碳纤维复合材料(CFRP)在激光表面烧蚀除胶过程中容易出现不均匀热影响区、纤维破损等缺陷,为了解决这一问题,提出并实现了一种基于CFRP纤维编织网格分块扫描的激光除胶工艺算法,采用单因素实验方法,进行了理论分析和实验验证,获得了不同激光扫面填充算法对CFRP表面树脂去除率、纤维破损度的影响规律,并对加工机理进行了分析研究。结果表明,选取平均功率为24W、重复频率为20kHz、扫描速率为1000mm/s、离焦量为5mm等参量时,加工样品表面得到了纤维完整、热损伤较小等较好的工艺效果。这一结果对激光加工CFRP烧蚀除胶的研究是有帮助的。

Carbon fiber reinforced plastics(CFRP)is prone to defects such as uneven heat-affected zone and fiber damage during the laser surface ablation and epoxy removal process.In order to solve this problem,a laser stripping process algorithm based on CFRP fiber woven grid block scanning was proposed and implemented.Theoretical analysis and experimental verification were carried out by single-factor experiment method,and the influence of different laser scanning surface filling algorithms on the resin removal rate and fiber damage degree of CFRP surface were obtained.The laser ablation mechanism was also analyzed and studied.The result shows that the processed samples have better process effects such as fiber integrity and less thermal damage undertheconditions ofaverage power 24W,repetition rate 20kHz,scanning speed 1000mm/s,defocus length 5mm,which is helpful for the research of CFRP laser resin removal.