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首页> 外文期刊>Journal of Composite Materials >Evaluation of delamination damage in carbon epoxy composites under swirling abrasives made by modified internal threaded nozzle
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Evaluation of delamination damage in carbon epoxy composites under swirling abrasives made by modified internal threaded nozzle

机译：改性内螺纹喷嘴旋流磨料下碳环氧复合材料中分层损伤的评价

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摘要

Carbon fibre-reinforced polymer composites are finding increased applications in the field of automotive manufacture and aircraft industries due to their appreciative combination of high strength and low weight. The machining of these composites with economically viable and high part qualities requires enhancement in machining strategies. Delamination and surface roughness are the undesirable geometrical defects inherent in abrasive jet machining of layered polymer composites. This investigation focuses on the mechanism of delamination and surface roughness in abrasive jet machining of carbon fibre-reinforced polymer composite. The paper endeavors at the exploration of the viability of imparting swirling motion to SiC abrasive particles by presenting internal threads in the newly designed nozzle. In this research, a novel threaded nozzle was introduced in the abrasive jet machine for making holes on the carbon fiber-reinforced polymer composites with the objective of reducing the delamination and surface roughness. This is a distinctive attempt of its kind and this has brought down the delamination factor considerably and, as a consequence, surface roughness obtained was minimum. Holes were made on carbon fiber-reinforced polymer composite by abrasive jet machining with a modified nozzle with and without an internal thread. The influence of abrasive jet parameters on the delamination factor (bottom and top) and surface roughness (Ra) was investigated. Maximum pressure and minimum SOD cause decrease in delamination and surface roughness in carbon fiber-reinforced polymer composite composites.
机译：由于其高强度和低重量的欣赏组合，碳纤维增强聚合物复合材料在汽车制造和飞机行业领域的应用增加了增加。这些复合材料的加工具有经济上可行和高零件质量，需要提高加工策略。分层和表面粗糙度是层状聚合物复合材料的磨料喷射加工中固有的不期望的几何缺陷。本研究侧重于碳纤维增强聚合物复合材料磨料喷射加工中分层和表面粗糙度的机理。本文通过在新设计的喷嘴中呈现内螺纹，探索旋转旋转运动的可行性探索。在该研究中，在磨料喷射机中引入了一种新型螺纹喷嘴，用于在碳纤维增强聚合物复合材料上制造孔，其目的是降低分层和表面粗糙度。这是一种独特的尝试，而且这种情况大大降低了分层因子，因此获得的表面粗糙度最小。通过磨料喷射加工，用改进的喷嘴和内螺纹，通过磨料喷射加工制造孔。研究了磨料喷射参数对分层因子（底部和顶部）和表面粗糙度（RA）的影响。碳纤维增强聚合物复合材料复合材料中分层和表面粗糙度的最大压力和最小SOD。

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