Effect of Adding Graphene Oxide Nanoplatelets on the Araldite Adhesive Fracture Strength under Mixed-Mode I/II Loading

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Physical Mesomechanics Pub Date : 2023-08-08 DOI:10.1134/S1029959923040082

Y. Bolghand, T. N. Chakherlou, H. Biglari

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Abstract

In the present paper, the effect of adding graphene on the fracture strength of the Araldite adhesive was studied. Experimental specimens were made of PMMA and then were bonded using a thin adhesive layer. Different loading modes were created by using the modified Arcan fixture. The effect of adding graphene to the adhesive layer was studied at four different weight ratios of graphene, including 0.00, 0.25, 0.50, and 1.00%. The results derived suggest that the experimental specimens with 0.5 wt % graphene have the highest fracture force. For specimens with the same amount of graphene, the highest fracture force was obtained under the mode II loading condition. The experimental results were compared with the results of the finite element model. The fracture behavior of an adhesive layer was modeled using the cohesive zone model. The maximum nominal stress criterion and the quadratic power law criterion were used for the crack initiation and propagation in the adhesive layer, respectively. The comparison between the numerical and experimental results shows overall good agreement.

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添加氧化石墨烯纳米片对混合模式I/II加载下Araldite粘结断裂强度的影响

本文研究了添加石墨烯对Araldite胶粘剂断裂强度的影响。实验样品由PMMA制成，然后用薄胶层粘合。使用改进的Arcan夹具创建了不同的加载模式。研究了石墨烯在0.00、0.25、0.50和1.00%的重量比下对胶粘剂层的影响。结果表明，石墨烯含量为0.5 wt %的试样具有最大的断裂力。对于相同石墨烯用量的试件，II型加载条件下断裂力最大。将实验结果与有限元模型结果进行了比较。采用内聚区模型对粘接层的断裂行为进行了建模。采用最大名义应力准则和二次幂律准则分别对粘接层裂纹的萌生和扩展进行了分析。数值计算结果与实验结果的比较表明，两者总体上吻合较好。

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来源期刊

Physical Mesomechanics Materials Science-General Materials Science

CiteScore

3.50

自引率

18.80%

发文量

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related in the physical mesomechanics and also solid-state physics, mechanics, materials science, geodynamics, non-destructive testing and in a large number of other fields where the physical mesomechanics may be used extensively. Papers dealing with the processing, characterization, structure and physical properties and computational aspects of the mesomechanics of heterogeneous media, fracture mesomechanics, physical mesomechanics of materials, mesomechanics applications for geodynamics and tectonics, mesomechanics of smart materials and materials for electronics, non-destructive testing are viewed as suitable for publication.