Enhancing Fracture Performance of Non-Conductive Composite Adhesively Bonded Joints With Magnetically Aligned MWCNT/Fe₃O₄ Hybrid Nanofillers

IF 3.1 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-22 DOI:10.1111/ffe.14567

Yousef Ghanbari, Amir Reza Fatolahi, Hadi Khoramishad

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引用次数: 0

Abstract

The Mode-I fracture behavior of non-conductive composite adhesively bonded joints (ABJs) reinforced with multi-walled carbon nanotube/iron oxide (MWCNT/Fe₃O₄) hybrid nanofillers aligned in different directions was studied using double cantilever beam (DCB) tests. Fe₃O₄ nanoparticles were chemically coated onto MWCNTs to explore the practical potential of these produced magnetically controllable nanofillers in high-tech industries that require precise nanofiller alignment in specific directions. Nanofillers were aligned within the ABJ adhesive layer using a low magnetic field at 0°, 45°, and 90° relative to the crack growth path, verified by Raman spectroscopy. ABJs with 90° alignment exhibited the highest fracture energy, surpassing unreinforced and randomly dispersed specimens by 136% and 41%, respectively. In contrast, 0°-alignment showed the lowest fracture energy, while 45° alignment demonstrated intermediate performance. Cohesive zone modeling simulated the ABJ damage behavior, and the effects of nanofiller alignment on macro and microscale fracture mechanisms were assessed using optical and scanning electron microscopy.

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磁取向MWCNT/Fe₃O₄杂化纳米填料增强非导电复合粘结接头断裂性能

采用双悬臂梁（DCB）试验研究了不同方向排列的多壁碳纳米管/氧化铁（MWCNT/Fe₃O₄）杂化纳米填料增强非导电复合粘结接头（ABJs）的i型断裂行为。将Fe₃O₄纳米颗粒化学涂覆在MWCNTs上，探索这些制备的磁可控纳米填料在需要精确定向纳米填料的高科技产业中的应用潜力。在相对于裂纹扩展路径0°、45°和90°的低磁场下，纳米填料在ABJ胶粘剂层内排列，并通过拉曼光谱验证。90°取向的ABJs表现出最高的断裂能，分别比未增强和随机分散的ABJs高出136%和41%。相比之下，0°取向的裂缝能量最低，而45°取向的裂缝能量中等。黏结区模型模拟了ABJ损伤行为，并利用光学显微镜和扫描电镜评估了纳米填料排列对宏观和微观破裂机制的影响。

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来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.