航空学报 > 2016, Vol. 37 Issue (4): 1384-1392   doi: 10.7527/S1000-6893.2015.0151

丝束张力对自动铺丝成型工艺的影响

赵聪, 肖军, 王显峰, 李俊斐, 黄威   

  1. 南京航空航天大学材料科学与技术学院, 南京 210016
  • 收稿日期:2015-03-26 修回日期:2015-05-26 出版日期:2016-04-15 发布日期:2015-06-01
  • 通讯作者: 肖军,Tel.:025-84892980 E-mail:j.xiao@nuaa.edu.cn E-mail:j.xiao@nuaa.edu.cn
  • 作者简介:赵聪,男,博士研究生。主要研究方向:先进复合材料制造技术。Tel:025-84892980 E-mail:zhaocong198906@126.com;肖军,男,硕士,教授,博士生导师。主要研究方向:先进复合材料制造技术。Tel:025-84892980 E-mail:j.xiao@nuaa.edu.cn
  • 基金资助:

    国家"973"计划(2014CB046501);江苏省高校优势学科建设工程资助项目

Effects of tows tension on automated fiber placement process

ZHAO Cong, XIAO Jun, WANG Xianfeng, LI Junfei, HUANG Wei   

  1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2015-03-26 Revised:2015-05-26 Online:2016-04-15 Published:2015-06-01
  • Supported by:

    National Basic Research Program of China (2014CB046501);Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘要:

为获得良好的铺丝成型质量,通过理论分析和实际铺放实验,从送丝质量和铺放质量两个角度出发,研究了丝束张力对自动铺丝成型工艺的影响。送丝实验发现,丝束张力的大小对送丝精度和送丝可靠性影响显著;铺放实验发现,过大或过小的丝束张力都会导致铺放质量的下降,铺放过程中丝束张力维持在合理的范围内;基于铺放过程中预浸丝束的受力分析,探究了不同铺放条件下铺放张力对铺放质量的影响,讨论了影响丝束张力取值范围的因素,建立了丝束张力取值范围的计算公式并对该公式的合理性进行了实验性验证。最终得出结论,丝束张力是自动铺丝成型工艺的重要工艺参数之一,铺放中丝束张力的取值应随曲面形状和铺放轨迹的改变而调整,并与其他铺放工艺参数相匹配以实现铺放质量的最优化。

关键词: 复合材料, 自动铺丝, 工艺参数, 丝束张力, 送丝精度, 铺放质量

Abstract:

To improve the forming quality of automated fiber placement process, the effects of tows tension on automated fiber placement process are studied by tows feeding and layup experiments. The results of tows feeding experiments turn out that the tows feeding precision and reliability is affected significantly by tension. In order to guarantee tows feeding precision and reliability, the value of tows tension should be kept uniformly and in a proper range. The layup experiment shows that inappropriate tows tension definitely reduces the process quality. By force analysis of the prepreg tow, the influences of tows tension on different layup conditions are discussed, the factors which influenced the proper value range of tows tension are discussed, and the formula of tows tension is derived and verified by layup experiments. Tows tension is one of the important parameter of automated fiber placement process. The value of tows tension should be promptly adjusted with mould surface, trajectory and other processing parameters to improve layup quality.

Key words: composites, automated fiber placement, processing parameters, tows tension, feeding precision, layup quality

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