Some experimental investigations in the drilling of carbon fiber-reinforced plastic (CFRP) composite laminates
Some experimental investigations in the drilling of carbon fiber-reinforced plastic (CFRP) composite laminates
复制标题
DOI：
10.1016/s0890-6955(96)00095-8
复制
发表时间：
1997-08-01
影响因子：
14
通讯作者：
Chen, WC
中科院分区：
文献类型：
--
作者：
Chen, WC
本文提出了分层因子F-d（即损伤区最大直径D-max与孔直径D的比值）的概念，便于分析和比较碳纤维增强塑料（CFRP）复合材料层合板钻孔过程中的分层程度。通过实验研究了在钻削过程中切削力随分层发生与否的变化规律。实验还研究了刀具几何形状和钻削参数对CFRP复合材料钻削过程中切削力变化的影响。实验结果表明，通过选择合适的刀具几何形状和钻削参数，可以获得无分层的钻削过程。切削温度一直被认为是影响刀具磨损率和刀具寿命的重要因素。本文还对后刀面温度进行了实验研究。实验结果表明，后刀面温度随切削速度的增大而增大，但随进给量的减小而减小。提出了最佳的切削条件，以避免在钻孔过程中的燃烧损坏。(C)1997 Elsevier Science Ltd.保留所有权利。
In this paper, a concept of delamination factor F-d (i.e. the ratio of the maximum diameter D-max in the damage zone to the hole diameter D) is proposed to analyze and compare easily the delamination degree in the drilling of carbon fiber-reinforced plastic (CFRP) composite laminates. Experiments were performed to investigate the variations of cutting forces with or without onset of delamination during the drilling operations. The effects of tool geometry and drilling parameters on cutting force variations in CFRP composite materials drilling were also experimentally examined. The experimental results show that the delamination-free drilling processes may be obtained by the proper selections of tool geometry and drilling parameters. The effects of drilling parameters and tool wear on delamination factor are also presented and discussed.Cutting temperature has long been recognized as an important factor influencing the tool wear rate and tool life. An experimental investigation of flank surface temperatures is also presented in this paper. Experimental results indicated that the flank surface temperatures increase with increasing cutting speed but decreasing feed rate. Optimal cutting conditions are proposed to avoid damage from burning during the drilling processes. (C) 1997 Elsevier Science Ltd. All rights reserved.