CFRP 铝合金自冲铆接接头的力学性能和失效机理研究

IF 1.5 4区 材料科学 Q4 MATERIALS SCIENCE, COMPOSITES Mechanics of Composite Materials Pub Date : 2024-05-03 DOI:10.1007/s11029-024-10188-0
Y. Q. Yan, S. Xu, Y. F. Xing, H. L. Bian, H. F. Wu
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引用次数: 0

摘要

研究了碳纤维增强聚合物/6061-T6 铝板自穿刺铆接接头的力学性能和失效机理。分析了铆接压力、铝表面处理和搭接长度对接头力学性能的影响。通过拉伸剪切试验和电子显微镜扫描获得了接头在失效过程中各个阶段的微观形态,并进一步讨论了 CFRP、铝板、铆钉和粘合剂层在不同阶段的变化,从而揭示了接头的失效机理。结果表明,适当增加铆接压力可提高接头强度。铝板表面处理可改善接头的表面性能,接头强度随砂纸网孔的增加呈先增大后减小的趋势。增加搭接长度可提高接头强度,但当搭接长度增加到一定值时,接头强度的提高并不明显。粘合铆接试样的失效过程是从粘合剂层失效到铆钉失效,铆钉失效后接头完全失效。
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Study of Mechanical Properties and Failure Mechanism of CFRP-Aluminum Alloy Self-Piercing Riveted-Adhesive Joints

The mechanical properties and failure mechanisms of self-piercing riveted-adhesive joints of carbon fiber-reinforced polymers/6061-T6 aluminum plates was investigated. The effects of riveting pressure, aluminum surface treatment, and lap length on the mechanical properties of the joints were analyzed. The microscopic morphology of the joint at each stage of the failure process was obtained by tensile-shear test and electron microscopy scan, on which the changes of CFRP, aluminum plate, rivet, and adhesive layer at different stages were further discussed to reveal the failure mechanism of the joint. The results showed that the joint strength could be improved by appropriately increasing the riveting pressure. The surface treatment of aluminum plate could improve the surface properties of the joint, and the joint strength showed a trend of first increasing and then decreasing with the increase of the sandpaper mesh. Increasing the lap length led to an increase in joint strength; however, when the lap length was increased to a certain value, the increase in joint strength was not obvious. The failure process of the adhesive riveted specimen was from the failure of the adhesive layer to the failure of the rivet, and after rivet failure, the joint failed completely.

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来源期刊
Mechanics of Composite Materials
Mechanics of Composite Materials 工程技术-材料科学:复合
CiteScore
2.90
自引率
17.60%
发文量
73
审稿时长
12 months
期刊介绍: Mechanics of Composite Materials is a peer-reviewed international journal that encourages publication of original experimental and theoretical research on the mechanical properties of composite materials and their constituents including, but not limited to: damage, failure, fatigue, and long-term strength; methods of optimum design of materials and structures; prediction of long-term properties and aging problems; nondestructive testing; mechanical aspects of technology; mechanics of nanocomposites; mechanics of biocomposites; composites in aerospace and wind-power engineering; composites in civil engineering and infrastructure and other composites applications.
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