Effect of surface energy on the shear strength of cfrp/steel adhesive joints

IF 2 3区材料科学 Q2 ENGINEERING, MECHANICAL

Surface Topography: Metrology and Properties Pub Date : 2023-08-23 DOI:10.1088/2051-672X/acf32d

Yefa Hu, Shitan Tong, Jinguang Zhang, Xu Xia, Xianglong Wen

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引用次数: 0

Abstract

Carbon Fiber Reinforced Plastic (CFRP) and metal adhesive joints have the advantages of lightweight structure, simple process, and no disruption of fiber continuity. The strength of adhesive joints has been the weak point of this structure. In order to provide a reference for the safe design of CFRP adhesive joints, the effect of the different surface energy of metal surfaces on the shear strength of CFRP/steel adhesive joints was studied. The surface energy of the metal surface was changed by changing the roughness of the metal surface. Test pieces with different roughness were designed. Roughness measurement tests, contact angle and surface energy measurement tests, and shear strength tests were conducted. It reveals the evolution of surface energy on the shear strength of CFRP/steel joints. The results show that the surface roughening changes the solid–liquid contact angle, enhances the solid surface energy, increases the wettability and adhesive capacity of the adhesive, and ultimately improves the shear strength. Therefore, improving the surface energy of stainless steel surfaces can significantly improve the shear strength of CFRP/stainless steel adhesive joints.

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表面能对cfrp/钢粘结接头抗剪强度的影响

碳纤维增强塑料(CFRP)与金属胶粘接具有结构轻、工艺简单、不破坏纤维连续性等优点。粘接接头的强度一直是这种结构的薄弱环节。为了给CFRP粘接接头的安全设计提供参考，研究了金属表面不同表面能对CFRP/钢粘接接头抗剪强度的影响。通过改变金属表面的粗糙度来改变金属表面的表面能。设计了不同粗糙度的试件。进行了粗糙度测试、接触角和表面能测试以及抗剪强度测试。揭示了表面能对CFRP/钢节点抗剪强度的影响规律。结果表明，表面粗化改变了固液接触角，增强了固体表面能，增加了胶粘剂的润湿性和粘接能力，最终提高了抗剪强度。因此，提高不锈钢表面的表面能，可以显著提高CFRP/不锈钢粘接接头的抗剪强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface Topography: Metrology and Properties Materials Science-Materials Chemistry

CiteScore

4.10

自引率

22.20%

发文量

183

期刊介绍： An international forum for academics, industrialists and engineers to publish the latest research in surface topography measurement and characterisation, instrumentation development and the properties of surfaces.