CFRP drilling: Fundamental study of local feed force and consequences on hole exit damage.
CFRP drilling: Fundamental study of local feed force and consequences on hole exit damage.
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DOI：
10.1016/j.ijmachtools.2015.04.006
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发表时间：
2015-07-01
影响因子：
14
通讯作者：
Costes, Jean Philippe
中科院分区：
文献类型：
--
作者：
Bonnet, Cedric;Poulachon, Gerard;Costes, Jean Philippe
碳纤维增强塑料（CFRP）现在通常用于飞机工业。主要的挑战是制造这种难以切割的工作材料，考虑到其质量标准和经济方面。钻孔是飞机结构装配所需的主要机加工工序。在本文中，结果介绍和讨论出口分层研究在局部范围内。由于碳纤维复合材料的各向异性，复合材料的复合顺序和钻头的旋转参数会改变纤维的切割模式。切削刃在孔底上产生的局部进给力可能与分层方面相关。提出了一种后处理方法来精确分析这些进给力和切削力矩的分布。确定适当的铺层顺序，以限制机械载荷集中和分层或未切割纤维的风险（C）2015由Elsevier Ltd.出版。
Carbon Fiber-Reinforced by Plastic (CFRP) is now commonly used in the aircraft industry. The main challenge is to manufacture this difficult-to-cut work material, considering its quality criteria and economical aspects. Drilling is the main machining operation required for the assembly of the aircraft structure. In this paper, results are presented and discussed regarding exit delamination studied at a local scale. Because of the anisotropic properties of CFRP, the fiber cutting modes change with the composite sequence combined with the drill revolution parameters. The local feed forces generated by the cutting edge on the hole bottom may be correlated with delaminating aspects. A posttreatment method is proposed to analyze precisely these feed force and cutting torque distributions. Appropriate ply sequences are identified in order to limit the mechanical load concentration and the risk of delamination or uncut fibers (C) 2015 Published by Elsevier Ltd.