当前位置: X-MOL 学术J. Braz. Soc. Mech. Sci. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Study on delamination factor and surface roughness in abrasive water jet drilling of carbon fiber-reinforced polymer composites with different fiber orientation angles
Journal of the Brazilian Society of Mechanical Sciences and Engineering ( IF 2.2 ) Pub Date : 2021-01-02 , DOI: 10.1007/s40430-020-02741-4
Meltem Altin Karataş , Ali Riza Motorcu , Hasan Gökkaya

Carbon fiber-reinforced polymer (CFRP) composites are used in aerospace applications because of their superior mechanical properties and light weight. Avoiding damage in the machining of CFRP composites is difficult using traditional methods. Abrasive water jet (AWJ) has recently become one of the preferred machining methods for CFRP composites. This study evaluated the AWJ machinability of CFRP composites having three different fiber orientation angles (M1: [0°/90°]s, M2: [+ 45°/− 45°]s, and M3: [0°/45°/90°/− 45°]s) according to the delamination factor (Df), and the average surface roughness (Ra) as quality characteristics of the drilled holes. The aim of the study was to investigate the effects of different levels of AWJ drilling parameters on the delamination factor and surface roughness and to determine the optimum drilling parameter levels that provide minimum delamination formation and surface roughness values. For this purpose, AWJ drilling experiments were carried out using the Taguchi L16 (44) orthogonal array. Water pressure (WP), stand-off distance (L), traverse feed rate (F), and hole diameter (D) were chosen as process parameters. Analysis of variance was used to determine the percentage effects of the AWJ drilling process parameters. The microscopic surface roughness and delamination formation properties of the machined surfaces were revealed using a scanning electron microscope and an optical microscope, respectively. The most effective parameters on Df and Ra in the AWJ drilling of M1, M2 and M3 CFRP materials were determined to be water pressure, and stand-off distance. Minimum Df and Ra values were obtained when AWJ drilling the M3 CFRP composite with a fiber orientation angle of [0°/45°/90°/− 45°]s. Minimum delamination formation and very good surface quality can be obtained when the optimum process parameters determined in this study are used in the planning process for the AWJ drilling of CFRP composites having different fiber orientation angles.



中文翻译:

不同纤维取向角的碳纤维增强聚合物复合材料磨料水射流钻孔时分层因子和表面粗糙度的研究

碳纤维增强聚合物(CFRP)复合材料由于其卓越的机械性能和轻质性而被用于航空航天应用。使用传统方法很难避免在CFRP复合材料加工过程中造成损坏。磨料射流(AWJ)最近已成为CFRP复合材料的首选加工方法之一。这项研究评估了具有三种不同纤维取向角(M1:[0°/ 90°] s,M2:[+ 45°/-45°] s和M3:[0°/ 45°/ 90°/-45°] s),取决于分层因子(D f)和平均表面粗糙度(R a)作为钻孔的质量特征。该研究的目的是研究不同水平的AWJ钻孔参数对分层因子和表面粗糙度的影响,并确定最佳钻孔参数水平,以提供最小的分层形成和表面粗糙度值。为此,使用田口L16(4 4)正交阵列进行了AWJ钻孔实验。水压(WP),固定距离(L),横进给速度(F)和孔直径(D选择)作为过程参数。方差分析用于确定AWJ钻孔工艺参数的百分比影响。使用扫描电子显微镜和光学显微镜分别揭示了加工表面的微观表面粗糙度和分层形成特性。确定在M1,M2和M3 CFRP材料的AWJ钻孔中,对D fR a的最有效参数是水压和保持距离。最小D fR a当AWJ以[0°/ 45°/ 90°/-45°] s的纤维取向角钻孔M3 CFRP复合材料时,获得了这些值。当在这项研究中确定的最佳工艺参数用于具有不同纤维取向角的CFRP复合材料的AWJ钻孔的计划过程中时,可以获得最小的分层形成和非常好的表面质量。

更新日期:2021-01-02
down
wechat
bug