Rotary ultrasonic drilling of polyetherimide composite to enhance the surface roughness and MRR: Experimental investigations and statistical approach

IF 3.6 4区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES
Abhinav Shard, Vishal Gupta, Mohinder Pal Garg
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Abstract

Polyetherimide Composite (PEC) is among the least dense and most compliant materials which possesses the properties of high heat resistance, durability, resistant to wear and corrosion as well as better tribological characteristics. These outstanding properties lead to its diverse applications in automobiles, aerospace, robots, sports equipment. PEC is machined by the conventional machining techniques like cutting, drilling, power hacksaw etc. Some of the limitations observed in conventional machining of these such as tool jamming, damage to surface topology, and fibres. To overcome the aforesaid limitations, in this work attempts to introduce rotary ultrasonic drilling (RUD) as viable option for machining of PEC. This work carries out the investigational study of input control factors on material removal rate (MRR) and surface roughness (SR). The outcomes of the study reveal that the with right selection of drilling control factors, better quality holes with superior topography as compared to conventional drilling, good surface finish, small exit chip sizes, low overcut errors are obtained. Interacting levels of higher spindle speed and a lower feed rate generated better surface characteristics. While drilling with the RUD as compared to normal drilling, there is a drop of 59.01 % at 550 rpm and 60 .9 % at 2550 rpm in SR.
旋转超声波钻削聚醚酰亚胺复合材料以提高表面粗糙度和 MRR:实验研究和统计方法
聚醚酰亚胺复合材料(PEC)是密度最小、顺应性最强的材料之一,具有高耐热性、耐久性、耐磨性、耐腐蚀性以及更好的摩擦学特性。这些优异的性能使其在汽车、航空航天、机器人和运动器材等领域得到广泛应用。PEC 采用传统的加工技术进行加工,如切割、钻孔、动力钢锯等。这些传统加工技术存在一些局限性,如刀具卡死、表面拓扑结构和纤维受损。为了克服上述局限性,本作品尝试引入旋转超声波钻孔 (RUD) 作为加工 PEC 的可行方案。这项工作对材料去除率(MRR)和表面粗糙度(SR)的输入控制因素进行了调查研究。研究结果表明,与传统钻孔加工相比,选择正确的钻孔控制因素可获得更高质量的孔,其形貌优于传统钻孔加工,表面光洁度好,排屑量小,过切误差低。较高的主轴转速和较低的进给率相互作用,产生了更好的表面特性。与普通钻孔相比,使用 RUD 钻孔时,SR 值在 550 rpm 时下降了 59.01%,在 2550 rpm 时下降了 60.9%。
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来源期刊
Journal of Thermoplastic Composite Materials
Journal of Thermoplastic Composite Materials 工程技术-材料科学:复合
CiteScore
8.00
自引率
18.20%
发文量
104
审稿时长
5.9 months
期刊介绍: The Journal of Thermoplastic Composite Materials is a fully peer-reviewed international journal that publishes original research and review articles on polymers, nanocomposites, and particulate-, discontinuous-, and continuous-fiber-reinforced materials in the areas of processing, materials science, mechanics, durability, design, non destructive evaluation and manufacturing science. This journal is a member of the Committee on Publication Ethics (COPE).
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