基于激光三维雕刻的CFRP多梯层挖补胶接接头加工技术研究  

Study on multi-layered CFRP patch bonding joint based on laser 3D engraving technology

作　　者：朱小伟 潘哲豪 杨文锋[2] 李绍龙[2] 曹宇[1] Zhu Xiaowei;Pan Zhehao;Yang Wenfeng;Li Shaolong;Cao Yu(International Science&Technology Cooperation Base for Laser Processing Robot,Wenzhou University,Wenzhou,Zhejiang 325035,China;Aviation Engineering Institute,Civil Aviation Flight University of China,Guanghan,Sichuan 618307,China)

机构地区：[1]温州大学激光加工机器人国际科技合作基地,浙江温州325035 [2]中国民用航空飞行学院航空工程学院,四川广汉618307

出　　处：《光电工程》2022年第1期71-80,共10页Opto-Electronic Engineering

基　　金：浙江省自然科学基金重点资助项目(LZ20E050003);四川省科技计划项目(2021YFSY0025);温州市重大科技项目(ZG2020038,H2020004)。

摘　　要：在航空飞行器的碳纤维复合材料(CFRP)结构件损伤修复时,挖补胶接技术是获得高性能的CFRP层合板接头的理想工艺。本文提出一种CFRP层合板的多梯层挖补胶接接头设计策略,设计了挖补胶接接头阴阳膜构建和分层切片激光三维雕刻扫描工艺代码生成算法,探索了CFRP梯层界面的激光烧蚀成型工艺规律和粘结性能改善机理,验证了胶接接头拉伸强度和冲击韧性的有效提升,接头失效方式符合所设计的粘接剂失效,提供了一种高自动化、柔性化的航空、航天、交通等领域CFRP构件的高性能挖补胶接接头设计和制备方法。To repair structural damage of carbon fiber reinforced polymers(CFRP)for aircrafts,the patch bonding technology is an ideal process to obtain a high-performance CFRP laminate joint.This study proposed a multi-ladder patch bonding adhesive joint design for CFRP laminates.The Yin and Yang film of patch bonding joint was designed and constructed.The code generation algorithms for the layered slice laser 3D engraving and scanning process were explored.The laser ablation processes of CFRP ladder layer interface and the bonding mechanism were investigated,which verified that the tensile strength and impact toughness of the adhesive joint were effectively improved.The failure mode of the joint is consistent with the designed adhesive failure.This study provides a design and fabrication technology to realize high-performance patch bonding joints for CFRP components,which can be applied in aviation,aerospace,and transportation etc.

关 键 词：挖补胶接 阴阳模型 激光烧蚀 分层切片 拉伸强度 

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