Characterization of thermoplastic composite joints fabricated by the combined refill friction stir spot welding and riveting process

IF 3.6 4区材料科学 Q2 MATERIALS SCIENCE, COMPOSITES

Journal of Thermoplastic Composite Materials Pub Date : 2024-08-02 DOI:10.1177/08927057241270859

Ryoji Ohashi, Ryoichi Hatano, Shunsuke Haruna

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引用次数: 0

Abstract

Carbon fiber-reinforced thermoplastics have been extensively studied to reduce the weight of transportation equipment. In this study, to enhance the interlocking effect of Ti-6Al-4V rivets, the new riveting process combined with refill friction stir spot welding (FSSW) was attempted. Consequently, the successful combination of refill FSSW and riveting resulted in a flared trumpet-shaped rivet, expanding the diameter of its tip significantly. Tensile shear tests exhibited both the stirred zone induced by refill FSSW and the flared rivet affected the fracture behavior. The cross-sectional observations revealed the existence of cracks at the boundary between the stirred zone and base material during tensile shear tests. Furthermore, a unique arrangement of the fiber caused by the stirring action was identified by observing the fracture surface using scanning electron microscopy. The study findings clarify the advantages of combining refill FSSW with riveting, providing insights into the potential implementation of this combined process in thermoplastic composites.

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通过组合式填充摩擦搅拌点焊和铆接工艺制造的热塑性复合材料接头的特性分析

为减轻运输设备的重量，人们对碳纤维增强热塑性塑料进行了广泛的研究。在这项研究中，为了增强 Ti-6Al-4V 铆钉的互锁效果，尝试了结合填充式搅拌摩擦点焊（FSSW）的新型铆接工艺。结果，成功地将填充式摩擦搅拌点焊与铆接结合在一起，形成了喇叭形铆钉，并显著扩大了铆钉尖端的直径。拉伸剪切试验结果表明，由填充高速钢引起的搅拌区和喇叭形铆钉都对断裂行为产生了影响。横截面观察结果表明，在拉伸剪切试验中，搅拌区和基体材料之间的边界存在裂缝。此外，通过使用扫描电子显微镜观察断裂表面，还发现了由搅拌作用引起的纤维独特排列。研究结果阐明了将填充式无缝钢管与铆接相结合的优势，为在热塑性复合材料中采用这种组合工艺的可能性提供了启示。

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来源期刊

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).