Fracture characterization of bonded composites: A comparative study

Q2 Materials Science

Engineering Solid Mechanics Pub Date : 2022-01-01 DOI:10.5267/j.esm.2021.8.001

N. Choupani, A. Torun

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引用次数: 9

Abstract

Bonded joints have important benefits over conventional joining techniques such as rivets, welding, bolts and nuts in structural applications, particularly for components prepared of composite or polymeric materials. Due to the involvement of many geometric, material and construction variables, and the complex fracture and mechanical modes offered in the bonded joints, a proper consideration of fracture behavior is required to fully achieve their benefits. The fractures in bonded joints are mainly of three types; interlaminar (delamination), adhesive (interfacial) and cohesive crack. For a particular defect, crack propagation may occur in the tensile (mode I), the shear (mode II), and the tear (mode III) and their combinations (mixed mode). This study deals with topics such as theories of bonded composite joints and repairs, finite element analysis and fracture-based analysis and tests of mixed-mode cohesive, interfacial and interlaminar fracture mechanics. By employing geometrical factors extracted from finite element analysis and experimental results obtained from a modified Arcan test fixture, the mixed-mode cohesive, interfacial, and interlaminar fracture toughness are determined and fracture surfaces obtained are discussed.

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粘结复合材料断裂特性的比较研究

在结构应用中，与铆钉、焊接、螺栓和螺母等传统连接技术相比，粘合连接具有重要的优势，特别是对于复合材料或聚合物材料制备的部件。由于涉及许多几何、材料和构造变量，以及粘结接头提供的复杂断裂和力学模式，因此需要适当考虑断裂行为以充分发挥其效益。结合节理的断裂主要有三种类型;层间(分层)、粘结(界面)和内聚裂纹。对于特定缺陷，裂纹扩展可能发生在拉伸(I型)、剪切(II型)和撕裂(III型)及其组合(混合模式)中。本研究涉及的主题包括粘结复合材料接头和修复理论、有限元分析和基于断裂的分析以及混合模式内聚、界面和层间断裂力学的测试。利用有限元分析中提取的几何因子和改进Arcan测试夹具的实验结果，确定了混合模式黏结力、界面和层间断裂韧性，并对得到的断口进行了讨论。

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

Engineering Solid Mechanics Materials Science-Metals and Alloys

CiteScore

3.00

自引率

0.00%

发文量

期刊介绍： Engineering Solid Mechanics (ESM) is an online international journal for publishing high quality peer reviewed papers in the field of theoretical and applied solid mechanics. The primary focus is to exchange ideas about investigating behavior and properties of engineering materials (such as metals, composites, ceramics, polymers, FGMs, rocks and concretes, asphalt mixtures, bio and nano materials) and their mechanical characterization (including strength and deformation behavior, fatigue and fracture, stress measurements, etc.) through experimental, theoretical and numerical research studies. Researchers and practitioners (from deferent areas such as mechanical and manufacturing, aerospace, railway, bio-mechanics, civil and mining, materials and metallurgy, oil, gas and petroleum industries, pipeline, marine and offshore sectors) are encouraged to submit their original, unpublished contributions.