Effect of graphene nanoparticles (GNP) on adhesively bonded patch repaired composite under tensile static and fatigue loading

IF 3.2 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives Pub Date : 2025-06-11 DOI:10.1016/j.ijadhadh.2025.104072

Banamali Sahu , Chinmaya Kumar Sahoo , Ramadas Chennamsetti , A. Arockiarajan

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引用次数: 0

Abstract

Composite materials are prone to damage during their operation and service condition. In these circumstances, composite patch repair is a promising alternative to the damaged part as it enhances the properties of the damaged material. This work performed static and fatigue tensile tests on pristine, drill, and two external patch-repaired samples (15 and 30 mm square patches). Both the 15 mm and 30 mm patch-repaired samples showed 8% and 31% improvement in fatigue life compared to the drill sample, respectively. Furthermore, to understand the effect of graphene nanoparticles (GNP), the 30 mm patch was preferred due to its superiority in improving mechanical properties. In order to enhance fatigue life, GNP of different weight percentages (0.3, 0.5, 0.7, and 0.9) were added to the patch-parent interface. A 0.5 wt% GNP provided approximately 157% and 96% improvement in fatigue life compared to drilled and repaired specimens, respectively. A thorough understanding of GNP addition in repaired composites with the help of failure pattern, DIC, and AE has been elaborated.

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石墨烯纳米颗粒（GNP）对粘接贴片修复复合材料在拉伸静态和疲劳载荷下的影响

复合材料在使用和使用过程中容易发生损坏。在这些情况下，复合贴片修复是一种有希望的替代受损部件，因为它增强了受损材料的性能。这项工作对原始、钻孔和两个外部补丁修复的样品（15和30毫米方形补丁）进行了静态和疲劳拉伸试验。15mm和30mm修补试样的疲劳寿命分别比钻孔试样提高了8%和31%。此外，为了了解石墨烯纳米颗粒（GNP）的影响，由于其在改善机械性能方面的优势，30mm贴片是首选。为了提高疲劳寿命，在贴片母界面中加入不同权重百分比（0.3、0.5、0.7和0.9）的GNP。与钻孔和修复试样相比，0.5 wt%的GNP分别提高了157%和96%的疲劳寿命。利用失效模式、DIC和声发射对修复复合材料的GNP添加进行了深入的了解。

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

International Journal of Adhesion and Adhesives 工程技术-材料科学：综合

CiteScore

6.90

自引率

8.80%

发文量

200

审稿时长

8.3 months

期刊介绍： The International Journal of Adhesion and Adhesives draws together the many aspects of the science and technology of adhesive materials, from fundamental research and development work to industrial applications. Subject areas covered include: interfacial interactions, surface chemistry, methods of testing, accumulation of test data on physical and mechanical properties, environmental effects, new adhesive materials, sealants, design of bonded joints, and manufacturing technology.