A study on the formation and failure mechanisms of CF/PPS-metal induction welding joints strengthened by micro-pins

IF 3.6 4区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES Journal of Thermoplastic Composite Materials Pub Date : 2024-02-26 DOI:10.1177/08927057241236140
Xuda Qin, Tian Yu, Shipeng Li, Guoyu Fu, Xianming Meng, Hao Li
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Abstract

This study proposed a novel hybrid joining technique that combines through-thickness reinforcement (TTR) and induction welding methods to address the challenges of composite-metal joining. The effects of geometrical parameters of micro-pins on the formation and bearing performance of hybrid joints were investigated by combing the experimental and numerical simulation approaches. Two simulation models which included the induction heating transfer and joint tensile failure process were established by COMSOL Multiphysics and Abaqus/Explicit. Subsequently, digital image correlation (DIC) was used to monitor the deformation process of different types of joints under tensile load, and a scanning electron microscope (SEM) was used to observe the welding interface of failed joints. By comparing the experimental and simulation results, it is found that adding pins can significantly improve the mechanical performance of welded joints, with maximum increases of 159% and 1758% in ultimate strength and energy absorption respectively compared to welded joints without interlock structures. This technique presents a potential solution for achieving high-quality metal-composite welded structures.
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通过微型销钉强化的 CF/PPS 金属感应焊接接头的形成和失效机理研究
本研究提出了一种新型混合连接技术,该技术结合了通厚加固(TTR)和感应焊接方法,以应对复合金属连接的挑战。通过实验和数值模拟相结合的方法,研究了微针几何参数对混合接头形成和承载性能的影响。通过 COMSOL Multiphysics 和 Abaqus/Explicit 建立了两个仿真模型,其中包括感应加热传递和接头拉伸破坏过程。随后,利用数字图像相关技术(DIC)监测了不同类型接头在拉伸载荷作用下的变形过程,并利用扫描电子显微镜(SEM)观察了失效接头的焊接界面。通过比较实验和模拟结果发现,添加销钉可显著改善焊接接头的机械性能,与无互锁结构的焊接接头相比,其极限强度和能量吸收分别提高了 159% 和 1758%。这项技术为实现高质量的金属复合材料焊接结构提供了一种潜在的解决方案。
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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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