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新型碳/埃利姆热塑性复合材料的超声波焊接：带有扁平及集成能量导向器的搭接剪切特性及断口形貌研究

Ultrasonic Welding of Novel Carbon/ Elium Thermoplastic Composites with Flat and Integrated Energy Directors: Lap Shear Characterisation and Fractographic Investigation.

作者信息

Bhudolia Somen K, Gohel Goram, Kantipudi Jayaram, Leong Kah Fai, Barsotti Robert J

机构信息

School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50, Nanyang Avenue, Singapore 639798, Singapore.

Institute for Sports Research, Nanyang Technological University, 50, Nanyang Avenue, Singapore 639798, Singapore.

出版信息

Materials (Basel). 2020 Apr 1;13(7):1634. doi: 10.3390/ma13071634.

DOI:10.3390/ma13071634
PMID:32244825
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7178302/
Abstract

The current research work presents a first attempt to investigate the welding attributes of Elium thermoplastic resin and the fusion bonding using ultrafast ultrasonic welding technique. The integrated energy director (ED) polymer-matrix composites (PMCs) panel manufacturing was carried out using the Resin Transfer Moulding (RTM) technique and the scheme is deduced to manufacture a bubble-free panel. Integrated ED configurations and flat specimens with Elium film of different thickness at the interface were investigated for ultrasonic welding optimization. Optimised weld time for integrated ED and flat Elium panels with film (0.5 mm thick) configuration was found to be 1 s and 5.5 s, respectively. The ED integrated configuration showed the best welding results with a lap shear strength of 18.68 MPa. The morphological assessment has shown significant plastic deformation of Elium resin and the shear cusps formation, which enhances the welding strength. This research has the potential to open up an excellent and automated way of joining Elium composite parts in automotive, wind turbines, sports, and many other industrial applications.

摘要

当前的研究工作首次尝试研究Elium热塑性树脂的焊接特性以及使用超快超声焊接技术进行熔接。采用树脂传递模塑（RTM）技术进行集成能量导向器（ED）聚合物基复合材料（PMC）面板制造，并推导了制造无气泡面板的方案。研究了集成ED配置以及在界面处具有不同厚度Elium薄膜的扁平试样，以优化超声焊接。发现集成ED和带有薄膜（0.5毫米厚）配置的扁平Elium面板的优化焊接时间分别为1秒和5.5秒。ED集成配置显示出最佳焊接结果，搭接剪切强度为18.68兆帕。形态学评估表明Elium树脂发生了显著的塑性变形并形成了剪切尖点，这提高了焊接强度。这项研究有可能为汽车、风力涡轮机、体育及许多其他工业应用中连接Elium复合材料部件开辟一种出色的自动化方法。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b26f/7178302/ed71e6e8fbf5/materials-13-01634-g008.jpg
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