含分层缺陷复合材料的钻削加工轴向力研究  

Research on Axial Force in Drilling and Machining of Polymers with Delamination Defects

作　　者：张晓宇[1] 鲍益东[1] 王志远 Zhang Xiaoyu;Bao Yidong;Wang Zhiyuan

机构地区：[1]南京航空航天大学 [2]国营芜湖机械厂

出　　处：《工程机械》2024年第5期33-38,I0013,共7页Construction Machinery and Equipment

摘　　要：采用双层铝箔预制含分层缺陷碳纤维增强复合材料(CFRP)层合板,并进行钻削仿真及加工试验,研究CFRP在不同分层深度、分层尺寸等缺陷状态及不同钻削位置、钻削转速等加工参数变量条件下加工轴向力变化,实现分层缺陷CFRP钻削性能定性评估。研究结果表明,含分层缺陷的层合板在钻削过程中存在二次进给阶段,加剧损伤演化,低转速、高进给以及大分层尺寸导致加工轴向力增大,加工质量降低。与大多数学者开展的完整CFRP复合材料钻削加工研究不同,考虑了结构损伤修理中常见的单侧机加工况,采用无支撑钻削,为含分层缺陷CFRP实际场景下的机械修理钻削情况提供了理论参考。Carbon fiber reinforced polymer(CFRP)laminates with delamination defects are prefabricated using double-layer aluminum foil,and drilling simulation and machining tests are carried out to study the variation of machining axial force of CFRP under defective states such as different delamination depths and delamination sizes,as well as under machining parameter variable conditions such as different drilling positions and drilling speeds,so as to achieve a qualitative assessment of the drilling performance of CFRP with delamination defects.The research results show that there is a secondary feed stage in the drilling process of laminates with delamination defects,which exacerbates the damage evolution,and low rotational speed,high feed and large delamination size lead to an increase in the machining axial force and a reduction in the machining quality.Unlike the comprehensive drilling and machining research on CFRP conducted by most scholars,the common unilateral machining condition in structural damage repair is considered,and unsupported drilling is adopted,which provide a theoretical reference for mechanical repair drilling of CFRP with delamination defects in practical scenarios.

关 键 词：碳纤维复合材料 分层缺陷 钻削加工 修理 

分 类 号：TB33[一般工业技术—材料科学与工程]